OP641SL Equivalent & Substitute Parts

Part Overview

The OP641SL is a phototransistor optical sensor manufactured by TT Electronics/Optek Technology, designed for 890nm wavelength detection in a top view pill package configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The OP641SL operates within a collector-emitter breakdown voltage of 25V maximum and supports collector current up to 50mA, with minimal dark current characteristics suitable for precision optical sensing applications.

Substiute Parts

OP641SL

TT Electronics/Optek TechnologyIn Stock: 1022OP641SL Datasheet

Current PartRFQ

OP643SL

TT Electronics/Optek TechnologyIn Stock: 3544OP643SL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP641SL is determined by strict equivalence across the following critical parameters:

• Wavelength specification (890nm)
• Voltage rating (Collector Emitter Breakdown: 25V maximum)
• Current specifications (Ic Max: 50mA, Id Max: 100nA)
• Power dissipation (50mW maximum)
• Mounting type and orientation (Surface Mount, Top View)
• Operating temperature range (-65°C ~ 125°C)
• Package configuration (Pill)
• Regulatory compliance (ROHS3, REACH Unaffected)

The OP643SL meets all specified parameters and is classified as the manufacturer-recommended substitute for the obsolete OP641SL.

Parameter Comparison

Engineering Selection Recommendations

The OP643SL is the direct equivalent substitute for the OP641SL. Both components share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the OP641SL is obsolete while the OP643SL maintains active production status. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards. Selection of the OP643SL for new designs and production applications eliminates obsolescence risk while maintaining full functional and electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the OP643SL directly replace the OP641SL in existing designs?

A: Yes. The OP643SL is electrically and mechanically equivalent to the OP641SL across all specified parameters, including wavelength, voltage ratings, current specifications, power dissipation, operating temperature range, and package configuration.

Q: What is the primary reason for substitution?

A: The OP641SL is classified as obsolete. The OP643SL is the active production equivalent, ensuring continued component availability and supply chain reliability.

Q: Are there any compliance differences between the two parts?

A: No. Both the OP641SL and OP643SL maintain identical ROHS3 compliance and REACH unaffected status.

Q: Does the pill package configuration remain the same?

A: Yes. Both components utilize the same pill package with top view orientation and surface mount mounting type.

Q: What are the critical parameters for substitution validation?

A: Wavelength (890nm), collector-emitter breakdown voltage (25V max), collector current (50mA max), dark current (100nA max), power dissipation (50mW max), operating temperature range (-65°C to 125°C), and package type (pill) must remain constant for substitution compatibility.