OP292B Infrared Emitter 890nm Equivalent & Substitute Parts

Part Overview

The OP292B is a through-hole infrared (IR) emitter manufactured by TT Electronics / Optek Technology, designed for 890nm wavelength applications with 150mA forward current capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The OP292B operates across an extended temperature range of -40°C to 100°C and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substiute Parts

OP292B

TT Electronics / Optek TechnologyIn Stock: 1158OP292B Datasheet

Current PartRFQ

IR333/H0

Everlight Electronics Co LtdIn Stock: 723IR333/H0 Datasheet

MFR RecommendedRFQ

LTE-3271B

Lite-On Inc.In Stock: 1171LTE-3271B Datasheet

MFR RecommendedRFQ

OP292A

TT Electronics/Optek TechnologyIn Stock: 1034OP292A Datasheet

MFR RecommendedRFQ

IR333/H0

Everlight Electronics Co LtdIn Stock: 723IR333/H0 Datasheet

MFR RecommendedRFQ

LTE-3271B

Lite-On Inc.In Stock: 1171LTE-3271B Datasheet

MFR RecommendedRFQ

OP292A

TT Electronics/Optek TechnologyIn Stock: 1034OP292A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OP292B are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Type: Infrared (IR) Emitter
• Mounting Type: Through Hole
• Wavelength compatibility within IR spectrum
• Forward current capability (If Max)
• Forward voltage (Vf) operating range
• Viewing angle tolerance
• Operating temperature range coverage
• Package form factor compatibility

Identified Substitute Groups:

Group 1: Direct Package Match (T 1 3/4)

• OP292A: Active product status, identical wavelength (890nm), identical current rating (150mA), identical voltage (1.75V), identical viewing angle (50°), identical package (T 1 3/4), extended temperature range (-40°C to 100°C)

Group 2: Alternative Wavelength with Radial Package

• IR333/H0: Active product status, 940nm wavelength, reduced current rating (100mA), lower voltage range (1.2V, 1.4V), reduced viewing angle (40°), radial package
• LTE-3271B: Active product status, 940nm wavelength, reduced current rating (100mA), lower voltage (1.25V), viewing angle (50°), radial package

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: OP292A

The OP292A is the optimal substitute for the obsolete OP292B. Both components share identical electrical specifications (890nm wavelength, 150mA forward current, 1.75V forward voltage, 50° viewing angle) and mechanical compatibility (T 1 3/4 package, through-hole mounting). The OP292A maintains the extended operating temperature range (-40°C to 100°C) and carries active product status with RoHS3 compliance and unlimited moisture sensitivity rating. No circuit redesign or board layout modification is required.

Secondary Recommendations: IR333/H0 and LTE-3271B

These alternatives are suitable only when wavelength flexibility is acceptable in the application. Both operate at 940nm instead of 890nm and feature reduced forward current capability (100mA versus 150mA). These parts require radial package accommodation rather than T 1 3/4 form factor, necessitating board layout modification. Operating temperature range is reduced to -40°C to 85°C. Selection of these alternatives should be based on application-specific wavelength tolerance and thermal environment requirements.

Compliance Considerations:

All recommended substitutes maintain RoHS3 compliance. The OP292A and LTE-3271B both specify unlimited moisture sensitivity rating (MSL 1). All parts carry EAR99 export classification and are REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can OP292A directly replace OP292B without circuit modification?

A: Yes. The OP292A is electrically and mechanically identical to the OP292B. Both operate at 890nm wavelength with 150mA forward current, 1.75V forward voltage, and 50° viewing angle in T 1 3/4 package configuration. No circuit redesign is required.

Q: What are the key differences between 890nm and 940nm wavelength emitters?

A: The OP292B and OP292A operate at 890nm, while IR333/H0 and LTE-3271B operate at 940nm. Wavelength selection depends on the photodetector or receiver component in the application. Substitution between these wavelengths is only valid if the receiving circuit is designed to accept 940nm wavelength.

Q: Why do IR333/H0 and LTE-3271B have lower current ratings?

A: The IR333/H0 and LTE-3271B are rated for maximum 100mA forward current, compared to 150mA for the OP292B and OP292A. Applications requiring 150mA operation cannot use these lower-rated alternatives without circuit modification to reduce forward current.

Q: What package form factor changes are required for IR333/H0 and LTE-3271B?

A: The OP292B uses T 1 3/4 package, while IR333/H0 and LTE-3271B use radial package configuration. Radial packages require different board footprints and mounting hole patterns. PCB layout redesign is necessary for these substitutes.

Q: Are there temperature range limitations with alternative parts?

A: The OP292B and OP292A operate across -40°C to 100°C. The IR333/H0 and LTE-3271B are limited to -40°C to 85°C. Applications requiring operation above 85°C must use OP292A or remain with OP292B inventory.

Q: Do all substitute parts meet RoHS3 compliance?

A: OP292A and LTE-3271B explicitly specify RoHS3 compliance. IR333/H0 compliance status is not specified in available documentation. Verify RoHS3 certification with the manufacturer if regulatory compliance is required.