OPB350C125Z Equivalent & Substitute Parts

Part Overview

The OPB350C125Z is an optical sensor manufactured by TT Electronics/Optek Technology, designed as a slotted phototransistor module with a 0.125" (3.18mm) sensing distance. This component operates using liquid sensing methodology and features a 4-lead dual row chassis mount configuration. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

OPB350C125Z

TT Electronics/Optek TechnologyIn Stock: 904OPB350C125Z Datasheet

Current PartRFQ

OPB350L125

TT Electronics / Optek TechnologyIn Stock: 5226OPB350L125 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPB350C125Z is determined by strict equivalence across the following critical parameters:

• Sensing distance: 0.125" (3.18mm)
• Sensing method: Liquid
• Output configuration: Phototransistor
• Maximum collector current: 50 mA
• Maximum DC forward current: 50 mA
• Maximum collector-emitter breakdown voltage: 30 V
• Operating temperature range: -40°C ~ 85°C
• Series compatibility: OPB350

The OPB350L125 qualifies as a direct substitute based on identical electrical specifications and sensing characteristics. The primary difference lies in mounting configuration and packaging format, with the substitute utilizing through-hole mounting and wire leads rather than chassis mount with dual row configuration.

Parameter Comparison

Engineering Selection Recommendations

The OPB350L125 is the manufacturer-recommended substitute for the obsolete OPB350C125Z. Both components maintain identical electrical performance specifications and environmental operating parameters. The substitute part carries active product status, ensuring continued availability and supply chain reliability.

Both parts maintain ROHS3 compliance and identical moisture sensitivity classification, supporting equivalent regulatory and environmental requirements. The transition from chassis mount to through-hole mounting represents the primary design consideration for implementation.

Frequently Asked Questions (FAQ)

Q: Can OPB350L125 directly replace OPB350C125Z in existing designs?

A: Electrical and sensing specifications are identical. Physical mounting configuration differs, requiring PCB layout or mechanical assembly modifications to accommodate through-hole wire leads instead of chassis mount dual row configuration.

Q: Are there differences in optical sensing performance between these parts?

A: No. Both components operate with identical sensing distance (0.125"), sensing method (liquid), and phototransistor output configuration.

Q: What is the impact of the product status change from obsolete to active?

A: The OPB350L125 active status ensures ongoing manufacturing and supply availability, eliminating long-lead time concerns associated with obsolete component sourcing.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity classification (MSL 1).

Q: Are there electrical parameter differences in current or voltage ratings?

A: No. Maximum DC forward current, collector current, and collector-emitter breakdown voltage specifications are identical across both parts.