# MOSFET Relay, 400 V, 125 mA, 36 ohm, SPST-NO

![Product image](https://novapart.co/image/farnell:1612725/)

**URL**: https://novapart.co/products/LH1525AT/mosfet-relay-400-v-125-ma-36-ohm-spst-no
**SKU**: LH1525AT
**Manufacturer**: VISHAY
**Category**: Switches & Relays || Relays || Solid State Relays & Contactors || MOSFET Solid State Relays
**Price**: €2.9200
**Stock**: 10+
**Lead Time**: 390 days (indicative)

## Description

Contact Configuration:SPST-NO; Load Current:125mA; Relay Terminals:Through Hole; Load Voltage Max:400V; On State Resistance Max:36ohm; Isolation Voltage:5.3kV; Forward Current If:330µA; Product Range:

## Specifications

| Parameter | Value |
|---|---|
| Load Type | AC / DC |
| Contact Form | SPST-NO (1 Form A) |
| Load Current | 125mA |
| Product Range | LH1525 Series |
| Relay Mounting | Through Hole |
| Relay Terminals | PC Pin |
| Load Voltage Max | 400V |
| Isolation Voltage | 5.3kV |
| Forward Current If | 330µA |
| I/O Capacitance Typ | 0.75pF |
| Contact Configuration | SPST-NO |
| On State Resistance Max | 36ohm |
| Mosfet Relay Package Style | DIP-6 |
| Off State Leakage Current Max | 1µA |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1612725/)

**LH1525AT, LH1525AAB, LH1525AABTR** 

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www.vishay.com 

## Vishay Semiconductors 

## **1 Form A Solid-State Relay** 

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SMD<br>S S'<br>S DC S'<br>6 5 4<br>DIP<br>1 2 3<br>i179041-2<br>**----- End of picture text -----**<br>


## **DESCRIPTION** 

The LH1525 relay are SPST normally open switches (1 form A) that can replace electromechanical relays in many applications. The relay requires a minimal amount of LED drive current to operate, making it ideal for battery powered and power consumption sensitive applications. The relay is constructed using a GaAIAs LED for actuation control and an integrated monolithic die for the switch output. The die, fabricated in a high-voltage dielectrically isolated technology, comprised of a photodiode array, switch-control circuitry, and MOSFET switches. In addition, the relay employs current-limiting circuitry, enabling it to pass lightning surge testing as per ANSI/TIA-968-B and other regulatory surge requirements when overvoltage protection is provided. The relay can be configured for AC/DC or DC-only operation. 

## **FEATURES** 

- Extremely low operating current 

- High speed operation 

- Isolation test voltage 5300 VRMS 

- Current limit protection 

- High surge capability 

- DC only option 

- Clean bounce free switching 

- Low power consumption 

- Surface mountable 

- Material categorization: For definitions of compliance please see www.vishay.com/doc?99912 

## **APPLICATIONS** 

- General telecom switching 

- Battery powered switch applications 

- Industrial controls 

- Programmable controllers 

- Instrumentation 

## **Note** 

- See “solid-state relays” (application note 56) 

## **AGENCY APPROVALS** 

- UL1577 file no. E52744 system code H, double protection 

- CSE certification 093751 

- BSI no. 7979, BSI no. 7980 

- FIMKO 25149 

## **ORDERING INFORMATION** 

|**ORDERING INFORMATION**|**ORDERING INFORMATION**|**ORDERING INFORMATION**|**ORDERING INFORMATION**|**ORDERING INFORMATION**|**ORDERING INFORMATION**|**ORDERING INFORMATION**|
|---|---|---|---|---|---|---|
||||||||
||**L**<br>**H**<br>**1**<br>**5**<br>**2**<br>**5**<br>**#**<br>PART NUMBER<br>ELECTR.<br>VARIATION|**#**||7.62 mm<br>DIP||1 mm<br>SMD|
|||PACKAGE<br>CONFIG.||7.62 mm|||
||||||> 0.||
||||||||
|**PACKAGE**|||||||
|SMD-6, tubes|||LH1525AAB||||
|SMD-6, tape and reel|||LH1525AABTR||||
|DIP-6, tubes|||LH1525AT||||



Rev. 1.9, 21-Aug-12 

Document Number: 83823 

**1** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**LH1525AT, LH1525AAB, LH1525AABTR** 

Vishay Semiconductors 

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www.vishay.com 

|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C,unless otherwise specified)|
|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**SYMBOL**|**VALUE**|**UNIT**|
|**INPUT**|||||
|LED input ratings: continuous forward current||IF|50|mA|
|LED input ratings: reverse voltage||VR|8|V|
|**OUTPUT**|||||
|Output operation (each channel):<br>DC orpeak AC load voltage|IL ≤50 μA|VL|400|V|
|Continuous DC load current,<br>bidirectional operationpin 4 to 6||IL|125|mA|
|Continuous DC load current,<br>unidirectional operationpins 4, 6(+)topin 5(-)||IL|250|mA|
|**SSR**|||||
|Ambient operatingtemperature range||Tamb|- 40 to + 85|°C|
|Storage temperature range||Tstg|- 40 to + 150|°C|
|Pin solderingtemperature(1)|t = 10 s max.|Tsld|260|°C|
|Input to output isolation test voltage|t = 1 s|VISO|5300|VRMS|
|Power dissipation||Pdiss|550|mW|



## **Notes** 

- Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute maximum ratings for extended periods of the time can adversely affect reliability. 

- (1) Refer to reflow profile for soldering conditions for surface mounted devices (SMD). Refer to wave profile for soldering conditions for through hole devices (DIP). 

|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|
|---|---|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**SYMBOL**|**MIN.**|**TYP.**|**MAX.**|**UNIT**|
|**INPUT**|||||||
|LED forward current, switch turn-on|IL= 100 mA, t = 10 ms|IFon||0.33|0.5|mA|
|LED forward current, switch turn-off|VL= ± 350 V, t = 100 ms|IFoff|0.001|0.23||mA|
|LED forward voltage|IF= 1.5 mA|VF|0.8|1.16|1.40|V|
|**OUTPUT**|||||||
|On-resistance, AC/DC, eachpole|IF= 1.5 mA, IL= ± 50 mA|RON|17|26|36|Ω|
|On-resistance, DC:pin 4, 6(+)to 5(-)|IF= 1.5 mA, IL= 100 mA|RON|4.25|7|8.25|Ω|
|Off-resistance|IF= 0 mA, VL= ± 100 V|ROFF||2000||GΩ|
|Current limit AC(1):pin 4(±)to 6(±)|IF= 1.5 mA, t = 5 ms, VL= 7 V|ILMT|170|185|270|mA|
|Off-state leakage current|IF= 0 mA, VL= ± 100 V|IO||0.67|200|nA|
||IF= 0 mA, VL= ± 400 V|IO||0.096|1|μA|
|Output capacitance|IF= 0 mA, VL= 1 V|CO||22||pF|
||IF= 0 mA, VL= 50 V|CO||6.42||pF|
|Switch offset|IF= 5 mA|VOS||0.2||μV|
|**TRANSFER**|||||||
|Capacitance(input to output)|VISO= 1 V|CIO||0.75||pF|



## **Notes** 

- Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering evaluations. Typical values are for information only and are not part of the testing requirements. 

- (1) No DC mode current limit available. 

|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|**SWITCHING CHARACTERISTICS**(Tamb= 25 °C,unless otherwise specified)|
|---|---|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**SYMBOL**|**MIN.**|**TYP.**|**MAX.**|**UNIT**|
|Turn-on time|IF= 1.5 mA, IL= 50 mA|ton||1.25||ms|
||IF= 5 mA, IL= 50 mA|ton||0.22|1|ms|
|Turn-off time|IF= 1.5 mA, IL= 50 mA|toff||0.6||ms|
||IF= 5 mA, IL= 50 mA|toff||1.1|1.5|ms|



Rev. 1.9, 21-Aug-12 

Document Number: 83823 

**2** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

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www.vishay.com 

## **LH1525AT, LH1525AAB, LH1525AABTR** 

## Vishay Semiconductors 

|**SAFETY AND INSULATION RATINGS**|**SAFETY AND INSULATION RATINGS**|**SAFETY AND INSULATION RATINGS**||||
|---|---|---|---|---|---|
|**PARAMETER**||**TEST CONDITION**|**SYMBOL**|**VALUE**|**UNIT**|
|Climatic classification||IEC 68 part 1||40/85/21||
|Pollution degree||DIN VDE 0109||2||
|Tracking resistance<br>(comparative trackingindex)||Insulation group llla|CTI|175||
|Highest allowable overvoltage||Transient overvoltage|VIOTM|8000|Vpeak|
|Max. workinginsulation voltage||Recurringpeak voltage|VIORM|890|Vpeak|
|Insulation resistance at 25 °C||VIO= 500 V|RIS|≥1012|W|
|Insulation resistance at TS|||RIS|≥109|W|
|Insulation resistance at 100 °C|||RIS|≥1011|W|
|Partial discharge test voltage||Methode a, Vpd= VIORMx 1.875|Vpd|1669|Vpeak|
|Safety limiting values -<br>maximum values allowed<br>in the event of a failure|Case temperature||TSI|175|°C|
||Input current||ISI|300|mA|
||Output power||PSO|700|mW|
|Minimum external air gap (clearance)||Measured from input terminals to output<br>terminals, shortest distance through air||≥7|mm|
|Minimum external tracking (creepage)||Measured from input terminals to output<br>terminals, shortest distance path alongbody||≥7|mm|
|Insulation thickness||||≥0.4|mm|



## **TYPICAL CHARACTERISTICS** (Tamb = 25 °C, unless otherwise specified) 

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**----- Start of picture text -----**<br>
120<br>100<br>80<br>IFon = 3 mA to<br>          10 mA<br>60<br>IFon = 2 mA<br>40 I Fon  = 1 mA<br>20 IFon = 0.5 mA<br>IFon = 0.3 mA<br>0<br>- 40    - 20       0        20       40       60       80<br>17331 Ambient Temperature (°C)<br> Fig. 1 - Recommended Operating Conditions<br>1.6<br>1.5<br>IF = 50 mA<br>1.4 I F = 20 mA<br>1.3<br>1.2<br>IF = 1 mA<br>1.1 IF = 2 mA<br>IF = 5 mA<br>1.0 IF = 10 mA<br>- 40     - 20       0       20       40       60       80<br>ilh1525at_01 Ambient Temperature (°C)<br>Load Current (mA)<br>LED Forward Voltage (V)<br>**----- End of picture text -----**<br>


Fig. 2 - LED Voltage vs. Temperature 

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**----- Start of picture text -----**<br>
120<br>100<br>80 T = 8 °C<br>T = 25 °C<br>T = - 40 °C<br>60<br>40<br>20<br>0<br>0            0.5              1              1.5              2<br>ilh1525at_02 LED Forward Voltage (V)<br>LED Forward Current (mA)<br>**----- End of picture text -----**<br>


Fig. 3 - LED Forward Current vs. Forward Voltage 

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10<br>85 °C<br>8<br>25 °C<br>- 40 °C<br>6<br>4<br>2<br>0<br>0 20 40 60 80<br>ilh1525at_03 LED Reverse Voltage (V)<br>LED Reverse Current (µA)<br>**----- End of picture text -----**<br>


Fig. 4 - LED Reverse Current vs. LED Reverse Voltage 

Rev. 1.9, 21-Aug-12 

Document Number: 83823 

**3** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**LH1525AT, LH1525AAB, LH1525AABTR** 

Vishay Semiconductors 

**==> picture [59 x 48] intentionally omitted <==**

www.vishay.com 

**==> picture [178 x 145] intentionally omitted <==**

**----- Start of picture text -----**<br>
900<br>IL = 100 mA<br>700<br>500<br>300<br>100<br>- 100<br>- 40    - 20       0        20       40       60       80<br>17330 Ambient Temperature (°C)<br>Turn-on (%), Norm. to 25 °C<br>LED Forward Current for Switch<br>**----- End of picture text -----**<br>


Fig. 5 - LED Current for Switch Turn-on vs. Temperature 

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**----- Start of picture text -----**<br>
40<br>30<br>20<br>10<br>0<br>- 10<br>IL = 5 mA<br>- 20<br>IL = 50 mA<br>- 30<br>- 40<br>- 40    - 20       0       20      40      60      80<br>ilh1525at_05 Temperature (°C)<br> (%), Norm.  to 25 °C<br>on<br>Change in R<br>**----- End of picture text -----**<br>


Fig. 6 - On-Resistance vs. Temperature 

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**----- Start of picture text -----**<br>
1.21<br>1.17<br>IL = 100 mA<br>1.13<br>1.09<br>1.05<br>1.01<br>- 40    - 20      0        20      40      60       80<br>ilh1525at_06 Temperature (°C)<br>LED Dropout Voltage (V)<br>**----- End of picture text -----**<br>


Fig. 7 - LED Dropout Voltage vs. Temperature 

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**----- Start of picture text -----**<br>
300<br>250<br>200<br>- 40 °C<br>25 °C<br>150 85 °C<br>100<br>50<br>IF = 1.5 mA<br>0<br>0        1        2        3       4        5        6        7<br>ilh1525at_07 Load Voltage (V)<br>Load Current (mA)<br>**----- End of picture text -----**<br>


Fig. 8 - Load Current vs. Load Voltage 

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**----- Start of picture text -----**<br>
40<br>30 IF = 5 mA, t = 5 ms<br>20<br>10<br>0<br>- 10<br>- 20<br>- 30<br>- 40<br>- 40    - 20        0       20       40       60       80<br>Ambient Temperature (°C)<br>ilh1525at_08<br>Change in Current Limit (%)      Normalized to 25 °C<br>**----- End of picture text -----**<br>


Fig. 9 - Current Limit vs. Temperature 

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**----- Start of picture text -----**<br>
9<br>8<br>7<br>6<br>5<br>4<br>3<br>2<br>1<br>0<br>0           1             2            3           4            5<br>ilh1525at_09 LED Forward Current (mA)<br> Specification at I = 5 mAF<br>ON<br>AC/DC On-resistance Variation (%)      Normalized to Data Sheet    R<br>**----- End of picture text -----**<br>


Fig. 10 - Variation in On-resistance vs. LED Current 

Rev. 1.9, 21-Aug-12 

Document Number: 83823 

**4** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**LH1525AT, LH1525AAB, LH1525AABTR** 

Vishay Semiconductors 

**==> picture [59 x 48] intentionally omitted <==**

www.vishay.com 

**==> picture [176 x 150] intentionally omitted <==**

**----- Start of picture text -----**<br>
50<br>40<br>IF = 0 mA<br>30<br>20<br>10<br>0<br>0    1     2     3     4     5     6     7     8     9   10<br>ilh1525at_10 Applied Voltage (V)<br>Capacitance (pF)<br>**----- End of picture text -----**<br>


Fig. 11 - Switch Capacitance vs. Applied Voltage 

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**----- Start of picture text -----**<br>
120<br>100<br>80<br>60<br>40<br>RL = 50 Ω<br>20 V P  = 10 V<br>0<br>10 [2]            10 [3]            10 [4]            10 [5]             10 [6]<br>ilh1525at_11 Frequency (Hz)<br>Isolation (dB)<br>**----- End of picture text -----**<br>


Fig. 12 - Output Isolation 

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**----- Start of picture text -----**<br>
300<br>85 ° C<br>250 70 °C<br>50 °C<br>200<br>25 °C<br>150<br>100<br>50<br>0<br>0           100         200         300          400<br>ilh1525at_12 Load Voltage (V)<br>Leakage Current (mA)<br>**----- End of picture text -----**<br>


Fig. 13 - Leakage Current vs. Applied Voltage at Elevated Temperatures 

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0.40<br>0.35<br>0.30<br>0.25<br>0.20<br>0.15<br>0.10 R L = 600 Ω<br>IL = 5 mA<br>0.05<br>0.00<br>10 [2]            10 [3]            10 [4]            10 [5]             10 [6]<br>ilh1525at_13 Frequency (Hz)<br>Insertion Loss (dB)<br>**----- End of picture text -----**<br>


Fig. 14 - Insertion Loss vs. Frequency 

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**----- Start of picture text -----**<br>
60<br>50<br>40<br>85 °C<br>30 25  ° C<br>- 40 °C<br>20<br>IF = 0 mA<br>10 I L  = < 50 µA<br>0<br>0         100        200       300        400        500<br>ilh1525at_14 Switch Breakdown Voltage (V)<br>Load Current (µA)<br>**----- End of picture text -----**<br>


Fig. 15 - Switch Breakdown Voltage vs. Load Current 

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**----- Start of picture text -----**<br>
8<br>6<br>4<br>2<br>0<br>- 2<br>- 4<br>- 6<br>- 8<br>- 40     - 20       0        20      40       60       80<br>ilh1525at_15 Ambient Temperature (°C)<br>Change in Breakdown Voltage (%)           Normalized to 25 °C<br>**----- End of picture text -----**<br>


Fig. 16 - Switch Breakdown Voltage vs. Temperature 

Rev. 1.9, 21-Aug-12 

Document Number: 83823 

**5** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**LH1525AT, LH1525AAB, LH1525AABTR** 

Vishay Semiconductors 

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www.vishay.com 

**==> picture [179 x 148] intentionally omitted <==**

**----- Start of picture text -----**<br>
5<br>IL = 5 mA<br>4<br>3<br>2<br>1<br>0<br>20     30      40      50      60     70      80     90<br>ilh1525at_16 Ambient Temperature (°C)<br>Switch Offset Voltage (µV)<br>**----- End of picture text -----**<br>


Fig. 17 - Switch Offset Voltage vs. Temperature 

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**----- Start of picture text -----**<br>
0.6<br>0.5<br>0.4<br>0.3<br>0.2<br>0.1<br>0.0<br>0            5          10          20          30         40<br>ilh1525at_17 LED Forward Current (mA)<br>Switch Offset Voltage (µV)<br>**----- End of picture text -----**<br>


Fig. 18 - LED Offset Voltage vs. LED Current 

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**----- Start of picture text -----**<br>
2.0<br>85 °C<br>1.6 25 °C<br>- 40 °C<br>1.2<br>0.8<br>IL = 50 mA<br>0.4<br>0.0<br>0           4            8           12          16         20<br>ilh1525at_18 LED Forward Current (mA)<br>Turn-on Time (ms)<br>**----- End of picture text -----**<br>


Fig. 19 - Turn-on Time vs. LED Current 

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**----- Start of picture text -----**<br>
45<br>30<br>15<br>0<br>- 15 I F = 5 mA<br>IL = 50 mA<br>- 30<br>- 40    - 20       0        20      40       60      80<br>ilh1525at_19 Temperature (°C)<br> (%), Norm. to 25 °C<br>on<br>Change in T<br>**----- End of picture text -----**<br>


Fig. 20 - Turn-off Time vs. Temperature 

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**----- Start of picture text -----**<br>
35<br>20<br>5<br>- 10<br>- 25<br>IF = 5 mA<br>IL = 50 mA<br>- 40<br>- 40    - 20       0       20       40       60      80<br>ilh1525at_20 Temperature (°C)<br> (%), Norm. to 25 °C<br>off<br>Change in T<br>**----- End of picture text -----**<br>


Fig. 21 - Turn-on Time vs. LED Temperature 

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**----- Start of picture text -----**<br>
0.85<br>0.75 T = - 40 °C<br>0.65<br>T = 25 °C<br>0.55<br>0.45<br>T = 85 °C<br>0.35<br>IL = 50 mA<br>0.25<br>0            4            8          12          16         20<br>ilh1525at_21 LED Forward Current (mA)<br>Turn-off Time (ms)<br>**----- End of picture text -----**<br>


Fig. 22 - Turn-off Time vs. LED Current 

Rev. 1.9, 21-Aug-12 

Document Number: 83823 

**6** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**LH1525AT, LH1525AAB, LH1525AABTR** 

**==> picture [59 x 48] intentionally omitted <==**

www.vishay.com 

## Vishay Semiconductors 

## **APPLICATIONS** 

## **INPUT CONTROL** 

The LH1525 low turn-on current SSR has highly sensitive photodetection circuits that will detect even the most minute currents flowing through the LED. Leakage current must be considered when designing a circuit to turn on and off these relays. 

Figure 23 shows a typical logic circuit for providing LED drive current. R1 is the input resistor that limits the amount of current flowing through the LED. For 5 V operation, a 2700 Ω resistor will limit the drive current to about 1.4 mA. Where high-speed actuation is desirable, use a lower value resistor for R1. An additional RC peaking circuit is not required with the LH1525 relay. 

R2 is an optional pull-up resistor which pulls the logic level high output (VOH) up toward the VS potential. The pull-up resistance is set at a high value to minimize the overall current drawn from the VS. The primary purpose of this resistor is to keep the differential voltage across the LED below its turn-on threshold. LED dropout voltage is graphed vs. temperature in the typical performance characteristics section. When the logic gate is high, leakage current will flow through R2. R2 will draw up to 8 mA before developing a voltage potential which may possibly turn on the LED. 

Each application should be evaluated, over the full operating temperature range to make sure that leakage current through the input control LED is kept to a value less than the minimum LED forward current for switch turn-off specification. 

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**----- Start of picture text -----**<br>
VS<br>R1<br>R2 2700 Ω<br>100 k Ω<br>    Any TTL or<br>buffered CMOS SSR<br>          logic<br>ilh1525at_22<br>**----- End of picture text -----**<br>


Fig. 23 - Input Control Circuit 

## **PACKAGE DIMENSIONS** in millimeters 

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**----- Start of picture text -----**<br>
DIP<br>Pin one ID<br>3 2 1<br>6.5<br>6.3 ISO method A<br>4 5 6<br>8.7<br>8.5<br>7.62 typ.<br>1 min.<br>3.81<br>3.30<br>4° typ. 18° typ.<br>3.81<br>0.051 min. 2.79<br>0.35<br>0.9 0.25<br>0.55 0.8<br>0.45 8.82<br>i178001 7.62<br>2.54 typ.<br>**----- End of picture text -----**<br>


Rev. 1.9, 21-Aug-12 

Document Number: 83823 

**7** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

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www.vishay.com 

## **LH1525AT, LH1525AAB, LH1525AABTR** 

## Vishay Semiconductors 

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**----- Start of picture text -----**<br>
SMD<br>8.71<br>8.51 Pin one ID<br>0.76<br>R 0.25<br>6.50 2.54<br>6.30<br>1.78<br>8 min. 1.52<br>11.05<br>1.27 typ.<br>10.03<br>ISO method A<br>9.63<br>1.33<br>7.62 typ. 3° to 7°<br>1.22<br>0.99 min.<br>3.81<br>3.30 0.25<br>0.10<br>18°<br>4°<br>1.016 0.31<br>2.54 0.20<br>0.508 8 min.<br>i178002<br>**----- End of picture text -----**<br>


## **PACKAGE MARKING** 

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LH1525<br>V YWW H 68<br>**----- End of picture text -----**<br>


## **Note** 

- Tape and reel suffix (TR) is not part of the package marking. 

Rev. 1.9, 21-Aug-12 

Document Number: 83823 

**8** 

For technical questions, contact: optocoupleranswers@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**Legal Disclaimer Notice** Vishay 

www.vishay.com 

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## **Disclaimer** 

ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 

Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. 

Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product.  To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. 

Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical requirements that are often placed on Vishay products in generic applications.  Such statements are not binding statements about the suitability of products for a particular application.  It is the customer’s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over time.  All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts.  Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein. 

Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. 

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay.  Product names and markings noted herein may be trademarks of their respective owners. 

Revision: 13-Jun-16 

Document Number: 91000 

**1** 



## Links

- [View this product on Novapart](https://novapart.co/products/LH1525AT/mosfet-relay-400-v-125-ma-36-ohm-spst-no)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/vishay/lh1525at/relay-solid-state/dp/1612725)
---

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