OP801WSL Equivalent & Substitute Parts

Part Overview

The OP801WSL is an active phototransistor optical sensor manufactured by TT Electronics/Optek Technology, designed for 890nm infrared detection applications. This component operates in the through-hole TO-206AA (TO-18-3 Metal Can) package and is currently in active product status with full inventory availability. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and environmental ratings can be maintained across alternative manufacturer offerings in the same optical sensor category.

Substiute Parts

OP801WSL

TT Electronics/Optek TechnologyIn Stock: 1907OP801WSL Datasheet

Current PartRFQ

BPW76A

Vishay Semiconductor Opto DivisionIn Stock: 2310BPW76A Datasheet

MFR RecommendedRFQ

BPW76B

Vishay Semiconductor Opto DivisionIn Stock: 2726BPW76B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OP801WSL are qualified based on the following criteria:

Mechanical Compatibility: Identical package type (TO-206AA, TO-18-3 Metal Can) with through-hole mounting and top-view orientation ensures direct physical interchangeability in PCB layouts.

Electrical Performance: Maximum collector-emitter breakdown voltage, maximum collector current, and maximum dark current must meet or exceed the original specification to ensure safe operation within existing circuit designs.

Optical Characteristics: Wavelength sensitivity and spectral response range must overlap with or encompass the 890nm detection band of the original component.

Environmental & Compliance: Operating temperature range, RoHS compliance status, and REACH classification must satisfy the regulatory and environmental requirements of the application.

Product Status: Only active, in-stock components from established manufacturers are included as substitutes.

The BPW76A and BPW76B phototransistors from Vishay Semiconductor Opto Division meet these substitution criteria through equivalent electrical ratings, identical mechanical packaging, overlapping spectral sensitivity, and matching compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

OP801WSL (Original): Maintains the lowest collector-emitter breakdown voltage specification at 30 V. Supports the widest operating temperature range from -65°C to 125°C. Recommended for applications requiring extended low-temperature performance below -40°C.

BPW76A & BPW76B (Substitutes): Both Vishay alternatives provide higher collector-emitter breakdown voltage ratings at 70 V, offering enhanced overvoltage protection margins. Operating temperature range is -40°C to 125°C. Both maintain identical maximum collector current (50 mA), dark current (100 nA), and power dissipation (250 mW) specifications. Both are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original component.

The wavelength difference (890nm original versus 850nm substitutes) falls within the near-infrared detection band and represents a minor spectral shift. Both substitute parts are active products with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can BPW76A and BPW76B be used interchangeably with OP801WSL in existing designs?

A: Yes, both Vishay parts are mechanically and electrically compatible. They share identical TO-206AA packaging, through-hole mounting, top-view orientation, maximum collector current (50 mA), dark current (100 nA), and power dissipation (250 mW). The higher breakdown voltage (70 V vs. 30 V) provides additional safety margin. The 850nm wavelength sensitivity overlaps the near-infrared detection range of the 890nm original.

Q: What is the difference between BPW76A and BPW76B?

A: Both parts are functionally equivalent. They share identical electrical specifications, package type, operating temperature range, and compliance certifications. Inventory availability differs: BPW76A has 2240 units in stock, while BPW76B has 2620 units in stock.

Q: Does the wavelength difference (890nm vs. 850nm) affect circuit performance?

A: The wavelength difference represents a minor spectral shift within the near-infrared band. Circuit performance depends on the specific light source and detector requirements of the application. Both wavelengths fall within the phototransistor's spectral response range.

Q: Are there temperature range limitations when substituting?

A: The OP801WSL operates from -65°C to 125°C, while BPW76A and BPW76B operate from -40°C to 125°C. If the application requires operation below -40°C, the original OP801WSL is required. For applications within -40°C to 125°C, both substitutes are suitable.

Q: Do all three parts meet the same regulatory requirements?

A: Yes. OP801WSL, BPW76A, and BPW76B are all ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. All three are active products with confirmed inventory.