OPB857Z

## Slotted Optical Switch 

## OPB857Z 

## **Features:** 

- Three wires for economy in electrical connection 

- Water resistant, no optical openings in upper plastic body 

- Internal narrow aperture for high motion resolution 

## **Description:** 

OPB857Z is a non-contact optical switch with a NPN silicon phototransistor and infrared Light Emitting Diode (LED) which are mounted on opposite sides of a 0.150” ( 3.8 mm) wide slot. 

The device upper body is a single molded piece IR transparent plastic that is tinted to reduce ambient light interference and offers water resistance as well as dirt/dust protection. The phototransistor has a internal aperture  that offers good optical resolution.  LED emissions are near-infrared (850 – 940nm). 

## **Applications:** 

- Non-contact object sensing 

- Assembly line automation 

- Machine automation 

- Equipment security 

- Machine safety 

|Wire Color|Description|
|---|---|
|Red|Collector|
|Brown|Anode|
|Black|Common|



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Notes: 

- (1) Wire is 26AWG, UL Rated PVC insulation. 

- (2) Ideal torque for bolt or screw  0,45 to 0,68 Nm  ( 4 to 6 Lb-in ). 

- (3) When using a thread lock compound, ND Industries ”ND Vibra-Tite **[®]** Formula 3” will avoid stress cracking plastic. 

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

> 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 B    11/2016     Page 1 

© TT electronics plc 

## Slotted Optical Switch 

## OPB857Z 

## **Electrical Specifications** 

## **Absolute Maximum Ratings** 

|**Absolute Maximum Ratings**||
|---|---|
|Storage & Operating Temperature Range|-40°C to +80° C|
|**Input Diode**||
|Input Diode Power Dissipation|100 mW( 5)|
|Input Diode Forward D.C. Current,  TA= 25°C|50 mA( 5)|
|Input Diode Peak Forward Pulse Current,  TA= 25°C (1µs pulse width, 300pps)|1 A|
|Input Diode Reverse D.C. Voltage, TA= 25°C|2 V|
|**Phototransistor**||
|Power Dissipation|100 mW( 5)|
|Collector - Emitter Voltage|30V|
|Emitter - Collector Voltage|5.0V|



**Electrical Characteristics** ( TA = 25°C ) 

**SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS** ~~a~~ **Input Diode** (see OP140 or OP240 for additional information) VF Forward Voltage - - 1.70 V IF = 20 mA IR Reverse Current - - 100 µA VR = 2 V ~~Pp~~ **Output Phototransistor** (see OP550 for additional information) V(BR)CEO Collector-Emitter Breakdown Voltage 30 - - V IC = 1 mA,  EE = 0 V(BR)ECO Emitter-Collector Breakdown Voltage 5.0 - - V IE = 100 µA,  EE = 0 ICEO Collector Dark Current - - 100 nA VCE = 10 V,  IF = 0, EE = 0 ~~ee~~ **Coupled** VCE(SAT) Collector-Emitter Saturation Voltage - - 0.40 V IC = 1.50 mA,  IF = 20 mA IC(ON) On-State  Collector Current 1.5 - 17.0 mA VCE = 10 V,  IF = 20 mA ~~Pp~~ 

> 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 B    11/2016     Page 2 

© TT electronics plc 

## Slotted Optical Switch 

## OPB857Z 

## **Performance** 

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**----- Start of picture text -----**<br>
OPB857Z - Flag Next to Emitter - Flag Next to LED  OPB817Z - Flag Next to Sensor5 Z - Flag Next to PTX<br>1.2 1.2<br>Top to Bottom Top to Bottom<br>1.00.8 eeeee 1.00.8 eeeee<br>Left to Right Right to Left Left to Right Right to Left<br>0.6 0.6<br>eee<br>0.4 0.4<br>eee \ ee |<br>0.2 0.2<br>ey Geeeeeee<br>0.0 ne 0.0<br>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>Distance (inches) Distance (inches)<br>OPB857Z - Flag in Middle of Slot<br>1.2<br>Top to Bottom<br>1.0 pt Top to Bottom<br>| 0<br>0.8<br>a |<br>Left to Right Right to Left<br>LED Side<br>0.6 ee we —<br>Emitter<br>Left to Right Right to Left<br>0.4 ees<br>| ee eee<br>Sensor<br>0.2<br> a\enee 0 nal Width<br>PTX Side<br>0.0 fF<br>0.00 0.05 0.10 0.15 0.20 0.25<br>Distance (inches)<br> Response  Response<br>C(ON) C(ON)<br>Typical I Typical I<br> Response<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 B    11/2016     Page 3 

© TT electronics plc