VT171P

www.vishay.com

Vishay Semiconductors

Rev. 1.2, 09-Dec-2025

1

Document Number: 80507

For technical questions, contact: sensorstechsupport@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

Single Channel Transmissive Sensor

LINKS TO ADDITIONAL RESOURCES

DESCRIPTION

The VT171P is a compact transmissive sensor that includes

an infrared emitter and a phototransistor detector, located

face-to-face in a surface mount package. VT171P is

especially designed to meet high operating temperature

requirements and is released for operating temperature

ranges from -25 °C to +85 °C.

FEATURES

• Package type: surface-mount

• Detector type: phototransistor

• Dimensions (L x W x H in mm): 5.5 x 4 x 5.7

• Gap (in mm): 3

• Aperture (in mm): 0.3

• Typical output current under test: IC = 1.5 mA

• Emitter wavelength: 950 nm

• Moisture sensitivity level (MSL): 1

• Material categorization: for definitions of

compliance please see

www.vishay.com/doc?99912

APPLICATIONS

• Accurate position sensor for encoder

• Detection of motion speed

Note

• Conditions like in table basic characteristics / coupler

Note

• MOQ: minimum order quantity

Pin connection

Top view

Coll.

NC

E

A

Cath.

NC

21848

333

DDD3 D

3D Models

Application

Notes

PRODUCT SUMMARY

PART NUMBER

GAP WIDTH

(mm)

APERTURE WIDTH

(mm)

TYPICAL OUTPUT

CURRENT UNDER TEST (1)

(mA)

DAYLIGHT

BLOCKING FILTER

INTEGRATED

VT171P

3

0.3

1.5

No

ORDERING INFORMATION

ORDERING CODE

PACKAGING

VOLUME (1)

REMARKS

VT171P

Tape and reel

MOQ: 1300 pcs, 1300 pcs/reel

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