# TVS Diode, Unidirectional, 24 V, 51 V, DO-214AB (SMC), 2 Pins

![Product image](https://novapart.co/image/farnell:2777116RL/)

**URL**: https://novapart.co/products/4.0SMDJ24A/tvs-diode-unidirectional-24-v-51-do-214ab-smc-2
**SKU**: 4.0SMDJ24A
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Diodes
**Price**: €0.4650
**Stock**: 10+

## Description

Product Range:-; TVS Polarity:Unidirectional; Reverse Stand-Off Voltage Vrwm:24V; Clamping Voltage Vc Max:51V; Diode Case Style:DO-214AB; No. of Pins:2Pins; Breakdown Voltage Min:26

## Specifications

| Parameter | Value |
|---|---|
| Svhc | To Be Advised |
| No. Of Pins | 2Pins |
| Tvs Polarity | Unidirectional |
| Product Range | - |
| Qualification | - |
| Diode Mounting | Surface Mount |
| Diode Case Style | DO-214AB (SMC) |
| Clamping Voltage Max | 51V |
| Reverse Standoff Voltage | 24V |
| Maximum Breakdown Voltage | 29.5V |
| Minimum Breakdown Voltage | 26.7V |
| Operating Temperature Max | 150°C |
| Peak Pulse Power Dissipation | 4kW |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2777116RL/)

**Transient Voltage Suppression Diodes** Surface Mount – 4000W  >  4.0SMDJ24A 

~~RoHS Pb~~ ~~**e3** IWOO~~ 

## 4.0SMDJ24A 

Uni-directional 

## **Description** 

The 4.0SMDJ24A is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. 

## **Features** ~~PT~~ 

**==> picture [241 x 83] intentionally omitted <==**

**----- Start of picture text -----**<br>
Agency Approvals<br>Po<br>AGENCY AGENCY FILE NUMBER<br>E230531<br>Sc<br>Maximum Ratings and Thermal Characteristics<br>(TA=25 [O] C unless otherwise noted)<br>**----- End of picture text -----**<br>


|E230531<br>~~Sc~~|~~Sc~~|~~Sc~~|
|---|---|---|
|**Maximum Ratings and Thermal Characteristics**<br>**(TA=25A=25=25[O]C unless otherwise noted)**|||
|Parameter<br>Symbol|Value|Unit|
|Peak Pulse Power Dissipation at<br>TA=25ºC by 10/1000µs Waveform<br>(Fig.2)(Note 1), (Note 2)<br>PPPM|4000|W|
|Power Dissipation on Infinite Heat<br>Sink at TL=50OC<br>PD|6.5|W|
|Peak Forward Surge Current, 8.3ms<br>Single Half Sine Wave (Note 3)<br>IFSM|300|A|
|Maximum Instantaneous Forward<br>Voltage at 100A for Unidirectional<br>Only<br>VF<br>Operating Temperature Range<br>TJ<br>Storage Temperature Range<br>TSTG<br>Typical Thermal Resistance Junction<br>to Lead<br>RθJL<br>Typical Thermal Resistance Junction<br>to Ambient<br>RθJA|3.5<br>-65 to 150<br>-65 to 175<br>15<br>75|V<br>°C<br>°C<br>°C/W<br>°C/W|



**Notes:** 

1. Non-repetitive current pulse , per Fig. 4 and derated above TJ (initial) =25[O] C per Fig. 3. 

2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. 

3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional device only, duty cycle=4 ~~per minute m~~ aximum. 

**Functional Diagram** ~~eee~~ Cathode Anode Uni-directional ~~te~~ 

- 4000W peak pulse power • Glass passivated chip capability at 10/1000μs junction waveform, repetition rate • Fast response time: (duty cycles):0.01% typically less than 1.0ps 

- • For surface mounted from 0V to BV min applications in order to • Excellent clamping optimize board space capability 

- Low profile package • Low incremental surge •  Typical failure mode is resistance short from over-specified • High temperature voltage or current to reflow soldering 

- •  Whisker test is conducted guaranteed: 260°C/40sec based on JEDEC at terminals JESD201A per its table 4a •  Meet MSL level1, per and 4c J-STD-020, LF maximun 

- •  IEC-61000-4-2 ESD peak of 260°C 30kV(Air), 30kV (Contact) • Matte tin lead–free plated 

- •  ESD protection of data • Halogen free and RoHS lines in accordance with compliant 

- IEC 61000-4-2 

- Pb-free E3 means 2nd 

- •  EFT protection of data level interconnect is lines in accordance with Pb-free and the terminal 

- IEC 61000-4-4 finish material is tin(Sn) 

- • Built-in strain relief (IPC/JEDEC J-STD•  VBR @ TJ= VBR@25°C 609A.01) x (1+αT x (TJ - 25)) (αT:Temperature Coefficient, typical value is 0.1%) 

## **Applications** 

TVS devices are ideal for the protection of I/O Interfaces, VCC bus and other vulnerable circuits used in Telecom, Computer, Industrial and Consumer electronic applications. 

|**Electrical Characteristics(TA=25°C unless otherwise noted)**<br>~~Lo~~|**Electrical Characteristics(TA=25°C unless otherwise noted)**<br>~~Lo~~|**Electrical Characteristics(TA=25°C unless otherwise noted)**<br>~~Lo~~|**Electrical Characteristics(TA=25°C unless otherwise noted)**<br>~~Lo~~|**Electrical Characteristics(TA=25°C unless otherwise noted)**<br>~~Lo~~|**Electrical Characteristics(TA=25°C unless otherwise noted)**<br>~~Lo~~|**Electrical Characteristics(TA=25°C unless otherwise noted)**<br>~~Lo~~|**Electrical Characteristics(TA=25°C unless otherwise noted)**<br>~~Lo~~|
|---|---|---|---|---|---|---|---|
|Part<br>Number<br>Marking<br>Reverse<br>Stand off<br>Voltage<br>VR<br>(Volts)|Breakdown<br>Voltage VBR<br>(Volts) @ IT<br>MIN<br>MAX|Test<br>Current<br>IT<br>(mA)|Maximum<br>Clamping<br>Voltage VC<br>@  Ipp<br>(10/1000µS)<br>(V)|Maximum<br>Clamping<br>Voltage VC<br>@  Ipp<br>(8/20µS)<br>(V)|Maximum<br>Peak Pulse<br>CurrentIpp<br>(10/1000µS)<br>(A)|Maximum<br>Peak Pulse<br>Current Ipp<br>(8/20µS)<br>(A)|Maximum<br>Reverse<br>Leakage IR<br>@ VR<br>(µA)|
|4.0SMDJ24A<br>4PEZ<br>24.0|26.70<br>29.50|1|38.9|51.0|103.0|650.0|2|
||||1|||||



© 2015 Littelfuse, Inc. 

Specifications are subject to change without notice. Revised: 11/20/15 

**Transient Voltage Suppression Diodes** Surface Mount – 4000W  >  4.0SMDJ24A 

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**----- Start of picture text -----**<br>
I-V Curve Characteristics<br>Uni-directional<br>|<br>|<br>|<br>|<br>Vc VBR VR V<br>oT = IR VF<br>IT<br>|<br>|<br>|<br>Ipp<br>**----- End of picture text -----**<br>


- **PPPM  Peak Pulse Power Dissipation** -- Max power dissipation 

- **VR Stand-off Voltage** -- Maximum voltage that can be applied to the TVS without operation 

- **VBR        Breakdown Voltage** --  Maximum voltage that flows though the TVS at a specified test current (IT) 

- **VC Clamping Voltage** -- Peak voltage measured across the TVS at a specified Ippm (peak impulse current) 

- **IR             Reverse Leakage Current** -- Current measured at VR 

- **VF           Forward Voltage Drop for Uni-directional** 

## **Ratings and Characteristic Curves (TA=25°C unless otherwise noted)** 

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Figure 1 - TVS Transients Clamping Waveform<br>Voltage Transients<br>Voltage Across TVS<br>Current Through TVS<br>Time<br>Additional Infomarion<br>el<br>Datasheet Resources Samples<br>Voltage or Current<br>**----- End of picture text -----**<br>


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Figure 2 - Peak Pulse Power Rating<br>1000<br>TJ  initial = Tamb<br>100<br>10<br>a)<br>0.31x0.31" (8.0x8.0mm)<br>Copper Pad Area<br>1<br>0.001 0.01 0.1 1  10<br>td-Pulse Width (ms)<br>-Peak Pulse Power (KW)<br>PPM<br>P<br>**----- End of picture text -----**<br>


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continues on next page.<br>**----- End of picture text -----**<br>


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© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15 

**Transient Voltage Suppression Diodes** Surface Mount – 4000W  >  4.0SMDJ24A 

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Ratings and Characteristic Curves (TA=25°C unless otherwise noted) (Continued)<br>Figure 3 - Peak Pulse Power Derating Curve<br>100<br>80<br>60<br>40<br>20<br>0<br>0 25 50 75 100 125 150 175<br>TJ - Initial Junction Temperature (ºC)<br>Figure 5 - Typical Transient Thermal Impedance<br>100<br>10<br>1<br>0.1<br>0.01<br>0.001 0.01 0.1 1 10 100 1000<br>T - Pulse Duration (s)P<br>)PP<br>) or Current (I<br>PP<br>Derating in Percentage %<br>Peak Pulse Power (P<br>°C/W)<br>IFSM - Peak Forward Surve Current(A)<br>Transient Thermal Impedance (<br>**----- End of picture text -----**<br>


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Figure 4 - Pulse Waveform<br>150<br>tr=10µsec TJ=25°C<br>> | | < Pulse Width(td) is defined<br>as the point where the peak<br>Peak Value current decays to 50% of IPPM<br>100 <—~ IPPM<br>Half Value<br>IPPM (   ) IPPM2<br>ws —<br>50 10/1000µsec. Waveform<br>as defined by R.E.A<br>+ td ><br>0<br>0 1.0 2.0 3.0 4.0<br>t-Time (ms)<br>Figure 6 - Maximum Non-Repetitive Peak Forward<br>Surge Current  Uni-Directional Only<br>RSM<br>- Peak Pulse Current, % I<br>IPPM<br>**----- End of picture text -----**<br>


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450<br>400350 \ all<br>300<br>| \ ml<br>250<br>200<br>150<br>100<br>50<br>0 Soe<br>1 10 100<br>Number of Cycles at 60 Hz<br>IFSM - Peak Forward Surve Current(A)<br>**----- End of picture text -----**<br>


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Figure 7 - Peak Forward Voltage Drop vs Peak Forward<br>Current (Typical Values)<br>**----- End of picture text -----**<br>


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100<br>10<br>1<br>0.1<br>0.01<br>0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00<br>VF-Peak Forward Voltage(V)<br>IF-Peak Forward Current(A)<br>**----- End of picture text -----**<br>


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© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15 

**Transient Voltage Suppression Diodes** Surface Mount – 4000W  >  4.0SMDJ24A 

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Soldering Parameters<br>Reflow Condition Lead–free<br>assembly TP tp<br>- Temperature Min (Ts(min)) 150°C  Ramp-up Critical Zone<br>Pre Heat - Temperature Max (Ts(max)) 200°C TL t L TL to TP<br>- Time (min to max) (ts) 60 – 180 secs Ts(max)<br>Average ramp up rate (Liquidus Temp (TA)  3°C/second max Ts(min) Ramp-down<br>to peak Preheat t s<br>TS(max) to TA - Ramp-up Rate 3°C/second max<br>Reflow - Temperature (TA) (Liquidus) 217°C  25˚C t 25˚C to Peak<br>- Time (min to max) (ts) 60 – 150 seconds Time (t)<br>Peak Temperature (TP) 260 [+0/-5]  °C<br>Time within 5°C of actual peak<br>20 – 40 seconds<br>Temperature (tp)<br>Ramp-down Rate 6°C/second max<br>Environmental Specifications<br>Time 25°C to peak Temperature (TP) 8 minutes Max.<br>Do not exceed 260°C High Temp. Storage JESD22-A103<br>Physical Specifications HTRB JESD22-A108<br>Weight 0.007 ounce, 0.21 grams<br>Temperature Cycling JESD22-A104<br>JEDEC DO214AB. Molded plastic body<br>Case<br>over glass passivated junction MSL JEDEC-J-STD-020, Level 1<br>Color band denotes positive end<br>Polarity<br>(cathode) except Bidirectional. H3TRB JESD22-A101<br>Matte Tin-plated leads, Solderable per<br>Terminal JESD22-B102 RSH JESD22-A111<br>Temperature (T)<br>**----- End of picture text -----**<br>


## **Dimensions** 

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DO-214AB (SMC J-Bend)<br>Cathode Band<br>(for Uni-directional products only)<br>A C<br>B<br>H<br>D<br>F<br>E G<br>J K L<br>I<br>**----- End of picture text -----**<br>


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Inches Millimeters<br>Dimensions<br>Min Max Min Max<br>A 0.114 0.126 2.900 3.200<br>B 0.260 0.280 6.600 7.110<br>C 0.220 0.245 5.590 6.220<br>D 0.079 0.103 2.060 2.620<br>E 0.030 0.060 0.760 1.520<br>F - 0.008 - 0.203<br>G 0.305 0.320 7.750 8.130<br>H 0.006 0.012 0.152 0.305<br>I 0.129 - 3.300 -<br>J 0.094 - 2.400 -<br>K - 0.165 4.200<br>L 0.094 - 2.400 -<br>**----- End of picture text -----**<br>


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© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15 

**Transient Voltage Suppression Diodes** Surface Mount – 4000W  >  4.0SMDJ24A 

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**----- Start of picture text -----**<br>
Part Numbering System Part Marking System<br>4.0SMDJ 24 A<br>Cathode Band<br>(for Uni-directional products only)<br>Littelfuse Logo<br>5% VBR VOLTAGE TOLERANCE 4PEZ Marking Code<br>YMXXX<br>Trace Code Marking<br>  Y:Year Code<br>VR VOLTAGE   M: Month Code<br>SERIES   XXX: Lot Code<br>Packaging Options<br>Component   Packaging Packaging<br>Part number Quantity<br>Package  Option Specification<br>4.0SMDJ24A DO-214AB 3000 Tape & Reel - 16mm tape/13” reel EIA STD RS-481<br>F<br>**----- End of picture text -----**<br>


## **Tape and Reel Specification** 

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0.157<br>(4.0)<br>0.63<br>(16.0)<br>Cathode<br>0.315 0.059 DIA Cover tape<br>(8.0) (1.5)<br>Optional<br>7” 7.0 (187)<br>13” 13.0 (330)<br>Dimensions are in inches<br>0.80 (20.2)  (and millimeters).<br>Arbor Hole Dia.<br>Direction of Feed<br>0.65<br>(16.4)<br>**----- End of picture text -----**<br>


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© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/20/15 



## Links

- [View this product on Novapart](https://novapart.co/products/4.0SMDJ24A/tvs-diode-unidirectional-24-v-51-do-214ab-smc-2)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/littelfuse/4-0smdj24a/tvs-diode-4kw-24v-unidir-do-214ab/dp/2777116RL)
---

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