3N262TX Optoisolator Equivalent & Substitute Parts

Part Overview

The 3N262TX is a through-hole optoisolator with transistor output, rated for 1000VDC isolation voltage and designed for single-channel DC input applications. This component features a TO-72-4 metal can package and is classified as obsolete. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for design continuity and procurement reliability.

Substiute Parts

3N262TX

TT Electronics/Optek TechnologyIn Stock: 11333N262TX Datasheet

Current PartRFQ

3N262

TT Electronics/Optek TechnologyIn Stock: 7033N262 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 3N262TX is determined by strict equivalence across the following critical parameters:

• Isolation voltage rating of 1000VDC
• Single-channel configuration
• Transistor output topology
• Current transfer ratio range: 10% to 50% @ 1mA
• Maximum output voltage of 30V
• Maximum output current of 30mA
• TO-72-4 metal can package for through-hole mounting
• Operating temperature range of -55°C to 125°C

The 3N262 meets all these criteria and is the direct manufacturer-recommended substitute. Both parts share identical electrical specifications and package geometry, ensuring pin-for-pin compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 3N262 is the direct active substitute for the obsolete 3N262TX. Both parts are manufactured by TT Electronics/Optek Technology and maintain identical electrical and mechanical specifications. The primary distinction is product status and compliance posture: the 3N262 is actively produced and ROHS3 compliant, whereas the 3N262TX is obsolete and RoHS non-compliant.

For new designs or production transitions, the 3N262 provides continuity of function with improved regulatory compliance. The parts are electrically and mechanically interchangeable, requiring no circuit modifications or layout adjustments.

Frequently Asked Questions (FAQ)

Q: Are the 3N262TX and 3N262 pin-for-pin compatible?

A: Yes. Both parts use the TO-72-4 metal can package with identical pinout and electrical characteristics. Direct substitution is possible without circuit redesign.

Q: What is the primary reason to transition from 3N262TX to 3N262?

A: The 3N262TX is obsolete and no longer manufactured. The 3N262 is the active equivalent, ensuring long-term supply availability and regulatory compliance.

Q: Does the 3N262 meet RoHS requirements?

A: Yes. The 3N262 is ROHS3 compliant, whereas the 3N262TX is RoHS non-compliant. This is relevant for applications subject to RoHS directives.

Q: Can I use the 3N262 in existing 3N262TX applications without modification?

A: Yes. The electrical specifications, isolation voltage, output current rating, and operating temperature range are identical. No circuit or PCB modifications are required.

Q: What are the critical parameters for substitution?

A: Isolation voltage (1000VDC), single-channel transistor output, current transfer ratio (10–50% @ 1mA), maximum output voltage (30V), maximum output current (30mA), and TO-72-4 package geometry must all match.