# OPTOSWITCH

![Product image](https://novapart.co/image/farnell:1139983/)

**URL**: https://novapart.co/products/OPB821S10Z/optoswitch
**SKU**: OPB821S10Z
**Manufacturer**: TT ELECTRONICS / OPTEK TECHNOLOGY
**Category**: Sensors & Transducers || Sensors || Photo Interrupters || Transmissive Photo Interrupters
**Price**: €4.6200
**Stock**: 10+
**Lead Time**: 131 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Gap Width | 2mm |
| Sensor Output | Phototransistor |
| Aperture Width | 1mm |
| Forward Voltage | 1.7V |
| Sensor Mounting | Panel / Chassis |
| Forward Current If | 50mA |
| Reverse Voltage Vr | 2V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1139983/)

## Slotted Optical Switch 

## OPB820, OPB821Z, OPB821S_Z 

## **Features:** 

- Non-contact switching 

- Four standard aperture sizes for high resolution 

- Low profile 

- 0.080” (2.03 mm) wide, 0.250” (8.89 mm) deep slot 

- Choice of PCBoard or wire mountings 

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**----- Start of picture text -----**<br>
OPB820<br>OPB821Z<br>**----- End of picture text -----**<br>


## **Description:** 

Each OPB820 and OPB821Z device consists of an infrared emitting diode (LED, 890 nm center wavelength) and a NPN silicon phototransistor mounted in a low-cost black plastic housing on opposite sides of an 0.080” (2.03 mm) wide slot.  Each device in this series has a 0.040” (1.02 mm) wide aperture located in front of the infrared diode.  Phototransistor switching occurs when an opaque object passes through the slot. 

Devices are offered with 0.275” (6.96 mm) lead spacing for PCBoard mounting (OPB820) or 24” (609 mm) 26 AWG wire leads (OPB821Z). 

## **Applications:** 

- Non-contact object sensing 

- Assembly line automation 

- Machine automation 

- Equipment safety 

- Machine safety 

|**Ordering Information**|**Ordering Information**|**Ordering Information**|**Ordering Information**|**Ordering Information**|**Ordering Information**|
|---|---|---|---|---|---|
|**Part**<br>**Number**|**LED Peak**<br>**Wavelength**|**Sensor**|**Slot Width /**<br>**Depth**|**Aperture**<br>**Emitter/Sensor**|**Lead Length /**<br>**Spacing**|
|**OPB820**|890 nm|Transistor|Transistor<br>0.080" /<br>0.255”|0.04"/ 0.04"|0.425" / 0.275"|
|**OPB820S10**||||0.04"/ 0.01"||
|**OPB820S5**||||0.04"/ 0.005"||
|**OPB820S3**||||0.04"/ 0.003"||
|**OPB821Z**||||0.040"/ 0.040"|24"/26 AWG<br>Wire|
|**OPB821S10Z**||||0.040"/ 0.010"||
|**OPB821S5Z**||||0.040"/ 0.005"||
|**OPB821S3Z**||||0.040"/ 0.003"||



> TT Electronics | Optek Technology, Inc. 1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200 www.ttelectronics.com | sensors@ttelectronics.com 

General Note 

TT Electronics reserves the right to make changes in product specification without notice or liability.  All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. 

Issue C     11/2016     Page 1 

© TT electronics plc 

## Slotted Optical Switch 

## OPB820, OPB821Z, OPB821S_Z 

## **Electrical Specifications** 

**Absolute Maximum Ratings** (TA=25°C unless otherwise noted) 

||Storage and Operating Temperature|-40°C to +85°C|
|---|---|---|
||Lead Soldering Temperature (1/16 inch [1.6 mm] from case for 5 seconds with soldering iron)(1)|260°C|
||**Input Diode**||
||Continuous Forward Current|50  mA|
||Peak Forward Current (1µs pulse width, 300 pps)|1 A|
||Reverse Voltage|2 V|
||Power Dissipation(2)|100 mW|
||**Output Phototransistor**||
|Collector-Emitter Voltage<br>30 V<br>Emitter-Collector Voltage<br>5 V<br>Power Dissipation(2)<br>100 mW<br>~~es~~|||
||Notes:||



- (1) RMA flux is recommended.  Duration can be extended to 10 seconds maximum when flow soldering. 

(2) For OPB820, derate linearly 1.67 mW/° C above 25° C.  For OPB821Z, derate linearly 1.82 mW/° C above 25° C. 

- (3) Methanol or isopropanol are recommended as cleaning agents.  Plastic housing is soluble in chlorinated hydrocarbons and ketones. 

**Electrical Characteristics** (TA = 25°C unless otherwise noted) 

|V(BR)CEO|Collector-Emitter Breakdown Voltage|30|-|-|V|IC= 100 mA|
|---|---|---|---|---|---|---|
|V(BR)ECO|Emitter-Collector Breakdown Voltage|5|-|-|V|IE= 100 µA|
|ICEO|Collector-Emitter Dark Current|-|-|100|nA|VCE= 10 V, IF= 0, IE= 0|
|**Coupled**|||||||
|VCE(SAT)|Collector-Emitter Saturation Voltage<br>OPB820, OPB821Z<br>OPB820S3, OPB821S3Z<br>OPB820S5, OPB821S5Z<br>OPB820S10, OPB821S10Z|-<br>-<br>-<br>-|-<br>-<br>-<br>-|0.4<br>0.4<br>0.4<br>0.4|V<br>V<br>V<br>V|IC= 250 µA, IF= 20 mA<br>IC= 40 µA, IF= 20 mA<br>IC= 150 µA, IF= 20 mA<br>IC= 250 µA, IF= 20 mA|
|IC(ON)|On-State  Collector Current<br>OPB820, OPB821Z<br>OPB820S3, OPB821S3Z<br>OPB820S5, OPB821S5Z<br>OPB820S10, OPB821S10Z|500<br>60<br>300<br>400|-<br>-<br>-<br>-|-<br>-<br>-<br>-|µA<br>µA<br>µA<br>µA|VCE= 5 V, IF= 20 mA<br>VCE= 5 V, IF= 20 mA<br>VCE= 5 V, IF= 20 mA<br>VCE= 5 V, IF= 20 mA|



General Note 

TT Electronics reserves the right to make changes in product specification without notice or liability.  All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. 

TT Electronics | Optek Technology, Inc. 1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200 www.ttelectronics.com | sensors@ttelectronics.com 

Issue C     11/2016     Page 2 

© TT electronics plc 

## Slotted Optical Switch 

## OPB820, OPB821Z, OPB821S_Z 

## **Performance** 

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OPB820 - Flag Next to Emitter<br>**----- End of picture text -----**<br>


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OPB820 - Flag next to Sensor<br>**----- End of picture text -----**<br>


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1.20 1.20<br>Top to Bottom Top to Bottom<br>1.00 1.00<br>TT Ey<br>0.80 0.80<br>eae ae<br>Left to Right Right to Left<br>0.60 0.60<br>eh veeee<br>Left to Right Right to Left<br>0.40 0.40<br>0.20 on) 0.20 seen<br>0.00 ee 0.00 ee<br>0.00 0.05 0.10 0.15 0.20 0.25 0.00 0.05 0.10 0.15 0.20 0.25<br>Displacement Distance (inches) Displacement Distance (inches)<br>OPB820 - Flag in Middle of Slot<br>1.20<br>Top to<br>1.00 Top to Bottom<br>0<br>pp tT —_<br>0.80<br>Left to Right Right to Left<br>0.60 Apt<br>Emitter<br>Left to Right Right to Left<br>0.40 ee te<br>Sensor<br>0.20<br>eee ee _<br>0 Width<br>0.00 ne<br>0.00 0.05 0.10 0.15 0.20 0.25<br>Displacement Distance (inches)<br> Response<br>C(ON)<br>Normalized I<br> Response<br>C(ON)<br>Normalized I<br> Response<br>C(ON)<br>Normalized I<br>**----- End of picture text -----**<br>


General Note 

TT Electronics reserves the right to make changes in product specification without notice or liability.  All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. 

TT Electronics | Optek Technology, Inc. 1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200 www.ttelectronics.com | sensors@ttelectronics.com 

Issue C     11/2016     Page 3 

© TT electronics plc 

## Slotted Optical Switch 

## OPB820, OPB821Z, OPB821S_Z 

## **Performance** 

**OPB820S3 - Flat Next to Sensor** 

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OPB820S3 - Flag Next to Emitter<br>**----- End of picture text -----**<br>


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1.20 1.20<br>Top to Bottom Top to Bottom<br>1.00 1.00<br>Pe) Et<br>0.80 0.80<br>Vf Ey<br>Left to Right Right to Left<br>Left to Right Right to Left<br>0.60 0.60<br>Payf LO<br>0.40 0.40<br>0.20 MAP 0.20<br>0.00 a ct 0.00<br>0.00 0.05 0.10 0.15 0.20 0.25 0.00 0.05 0.10 0.15 0.20 0.25<br>Displacement Distance (inches) Displacement Distance (inches)<br>OPB820S3 - Flag in Middle of Slot<br>1.20<br>Top to Bottom<br>1.00<br>Top to Bottom<br>0<br>0.80 —<br>Left to Right Right to Left<br>0.60<br>Ap ur<br>Emitter<br>0.40<br>Left to Right Right to Left<br>0.20 Agee EL<br>Sensor<br>0 Width<br>0.00 —<br>0.00 0.05 0.10 0.15 0.20 0.25<br>Displacement Distance (inches)<br>General Note<br>TT Electronics | Optek Technology, Inc.<br>TT Electronics reserves the right to make changes in product specification without<br>1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200<br>notice or liability.  All information is subject to TT Electronics’ own data and is<br>www.ttelectronics.com | sensors@ttelectronics.com<br> Response (mA)<br>C(ON)<br>Typical I<br> Response (mA)<br>C(ON)<br>Typical I<br> Response (mA)<br>C(ON)<br>Typical I<br>**----- End of picture text -----**<br>


## General Note 

TT Electronics reserves the right to make changes in product specification without notice or liability.  All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. 

Issue C     11/2016     Page 4 

© TT electronics plc 

## Slotted Optical Switch OPB820, OPB821Z, OPB821S_Z 

## **Performance** 

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OPB820S5 - Flag Next to Emitter OPB820S5 - Flag Next to Sensor<br>1.20 1.20<br>Top to  Top to<br>1.00 1.00<br>TTT LL] COCO<br>0.80 TPO 0.80<br>Left to Right Right to Left Left to Right Right to Left<br>0.60 0.60<br>ft ee<br>0.400.20 Nvy\ | N 0.400.20 a\ |<br>0.00 ov 0.00<br>0.00 0.05 0.10 0.15 0.20 0.25 0.00 0.05 0.10 0.15 0.20 0.25<br>Displacement Distance (inches) Displacement Distance (inches)<br>OPB820S5 - Flag in Middle Slot<br>1.20<br>Top to<br>1.00 ett tL<br>Top to Bottom<br>0<br>0.80<br>ep oy<br>Left to Right Right to Left<br>0.60<br>ves eee _<br>Emitter<br>0.40 Left to Right Right to Left<br>fonee cee |<br>0.20 eee ee Sensor .<br>0 Width<br>0.00 Ah<br>0.00 0.05 0.10 0.15 0.20 0.25<br>Displacement Distance (inches)<br> Response (mA)<br>C(ON)<br>Typical I<br> Response (mA)<br>C(ON)<br>Typical I<br> Response (mA)<br>C(ON)<br>Typical I<br>**----- End of picture text -----**<br>


General Note 

TT Electronics reserves the right to make changes in product specification without notice or liability.  All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. 

TT Electronics | Optek Technology, Inc. 1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200 www.ttelectronics.com | sensors@ttelectronics.com 

Issue C     11/2016     Page 5 

© TT electronics plc 

## Slotted Optical Switch 

## OPB820, OPB821Z, OPB821S_Z 

## **Performance** 

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OPB820S10 - Flag Next to Emitter OPB820S10 - Flag Next to Sensor<br>1.20 1.20<br>Top to  Top to Bottom<br>1.00 1.00<br>0.80 0.80<br>Left to Right Right to Left<br>Left to Right Right to Left<br>0.60 0.60<br>ee |e eee |e<br>:<br>0.40 0.40<br>nee Gee eee eee<br>\<br>0.20 ee 0.20 |<br>\  Ce eee ee<br>0.00 ee 0.00 |<br>0.00 0.05 0.10 0.15 0.20 0.25 0.00 0.05 0.10 0.15 0.20 0.25<br>Displacement Distance (inches)<br>Displacement Distance (inches)<br>OPB820S10 - Flag in Middle of Slot<br>1.20<br>Top to<br>1.00<br>pa ft |<br>Top to Bottom<br>0<br>0.80<br>Vy<br>Left to Right Right to Left<br>0.60<br>i i<br>Emitter<br>0.40<br>ate cee _<br>Left to Right Right to Left<br>0.20<br>Sensor<br>ee te th<br>0 Width<br>0.00 A<br>0.00 0.05 0.10 0.15 0.20 0.25<br>Displacement Distance (inches)<br>General Note<br>TT Electronics | Optek Technology, Inc.<br>TT Electronics reserves the right to make changes in product specification without<br>1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200<br>notice or liability.  All information is subject to TT Electronics’ own data and is<br>www.ttelectronics.com | sensors@ttelectronics.com<br>considered accurate at time of going to print.<br> Response (mA)<br>C(ON)<br>Typical I<br> Response (mA)<br>C(ON)<br>Typical I<br> Response (mA)<br>C(ON)<br>Typical I<br>**----- End of picture text -----**<br>


Issue C     11/2016     Page 6 

© TT electronics plc 

## Slotted Optical Switch OPB820, OPB821Z, OPB821S_Z 

## **Packaging** 

## **Package Drawing OPB820** 

## **Package Drawing OPB821** 

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24.0 [609]<br>**----- End of picture text -----**<br>


**DIMENSIONS ARE IN:** 

**[ MILLIMETERS] INCHES CONTAINS POLYSULFONE** To avoid stress cracking, we suggest using ND Industries’ **Vibra-Tite** for thread-locking. **Vibra-Tite** evaporates fast without causing structural failure in OPTEK’s molded plastics. 

|**Pin #**|**Description**|**Pin #**|**Description**|
|---|---|---|---|
|4|Cathode|2|Collector|
|3|Anode|1|Emitter|



|**Color/Pin #**|**Description**|**Color/Pin #**|**Description**|
|---|---|---|---|
|Green-3|Cathode|White-2|Collector|
|Orange-4|Anode|Blue-1|Emitter|



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3  2<br>e e<br>oN<br>+,<br>e e<br>4  1<br>**----- End of picture text -----**<br>


## General Note 

TT Electronics reserves the right to make changes in product specification without notice or liability.  All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. 

TT Electronics | Optek Technology, Inc. 1645 Wallace Drive, Ste. 130, Carrollton, TX USA 75006 |Ph: +1 972 323 2200 www.ttelectronics.com | sensors@ttelectronics.com 

Issue C     11/2016     Page 7 

© TT electronics plc 



## Links

- [View this product on Novapart](https://novapart.co/products/OPB821S10Z/optoswitch)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/optek-technology/opb821s10z/optoswitch/dp/1139983)
---

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