OPB854A2 Equivalent & Substitute Parts

Part Overview

The OPB854A2 is an optical sensor manufactured by TT Electronics/Optek Technology, designed as a through-beam phototransistor with PCB mount configuration. This component operates at a sensing distance of 0.100" (2.54mm) and is classified as an unamplified optical sensor. The OPB854A2 is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

OPB854A2

TT Electronics/Optek TechnologyIn Stock: 1058OPB854A2 Datasheet

Current PartRFQ

OPB854A3

TT Electronics/Optek TechnologyIn Stock: 1432OPB854A3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB854A2 is determined by strict equivalence across the following critical parameters:

• Sensing Distance: 0.100" (2.54mm) — must match exactly
• Sensing Method: Through-Beam configuration
• Output Configuration: Phototransistor output type
• Current Ratings: DC Forward (If) maximum 50 mA; Collector (Ic) maximum 30 mA
• Voltage Rating: Collector Emitter Breakdown maximum 30 V
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package Configuration: PCB Mount

The OPB854A3 meets all specified electrical and mechanical parameters, making it a direct functional equivalent. The primary distinction is product status: OPB854A2 is obsolete while OPB854A3 is active production.

Parameter Comparison

Engineering Selection Recommendations

The OPB854A3 is the direct substitute for the OPB854A2. Both components share identical electrical specifications, mechanical configuration, and environmental operating parameters. The OPB854A3 maintains ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original design.

The primary advantage of selecting OPB854A3 is active product status, which ensures long-term availability and supply chain continuity. The OPB854A2, being obsolete, presents procurement risk and limited inventory access. For new designs or component replacement in existing systems, OPB854A3 is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can OPB854A3 be used as a direct replacement for OPB854A2 in existing PCB assemblies?

A: Yes. The OPB854A3 is electrically and mechanically equivalent to OPB854A2. Both components feature identical through-hole PCB mount configuration, sensing distance, current ratings, voltage ratings, and operating temperature range. No circuit modifications are required.

Q: What is the difference between OPB854A2 and OPB854A3?

A: The components are functionally identical. The primary difference is product status: OPB854A2 is obsolete while OPB854A3 is in active production. Both meet ROHS3 compliance and share all specified electrical and mechanical parameters.

Q: Are there packaging differences between OPB854A2 and OPB854A3?

A: Both components use PCB Mount through-hole packaging. OPB854A3 is available in bulk packaging, while OPB854A2 packaging information was not specified in the original documentation.

Q: What parameters must match for optical sensor substitution?

A: For the OPB854 series, critical matching parameters include sensing distance (0.100" / 2.54mm), sensing method (through-beam), output configuration (phototransistor), current ratings (If max 50 mA, Ic max 30 mA), voltage rating (30 V breakdown), operating temperature range (-40°C to 85°C), and mounting type (through-hole PCB mount).

Q: Is OPB854A3 compliant with environmental and regulatory standards?

A: Yes. OPB854A3 is ROHS3 compliant, REACH unaffected, and carries MSL rating of 1 (unlimited moisture sensitivity). These specifications match the original OPB854A2 component.