4N23ATXV Optoisolator Equivalent & Substitute Parts

Part Overview

The 4N23ATXV is a 1000VDC optoisolator transistor with base output in TO-78-6 metal can packaging, designed for single-channel isolation applications. This part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and component procurement. The 4N23ATXV maintains 60% minimum current transfer ratio at 10mA input with 50mA maximum output current capability and 300mV maximum Vce saturation voltage.

Substiute Parts

4N23ATXV

TT Electronics/Optek TechnologyIn Stock: 11204N23ATXV Datasheet

Current PartRFQ

JANTX4N23A

TT Electronics/Optek TechnologyIn Stock: 1208JANTX4N23A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4N23ATXV is determined by the following critical electrical and mechanical parameters:

• Isolation Voltage: 1000VDC minimum requirement
• Number of Channels: Single channel configuration
• Output Type: Transistor with Base output topology
• Package: TO-78-6 Metal Can through-hole mounting
• Current Transfer Ratio: 60% minimum at 10mA input
• Maximum Output Current: 50mA per channel
• Vce Saturation: 300mV maximum
• Input Type: DC input

The JANTX4N23A qualifies as a direct substitute based on matching all critical parameters within the allowed electrical and mechanical specifications for this optoisolator category.

Parameter Comparison

Engineering Selection Recommendations

The JANTX4N23A is the qualified substitute for the obsolete 4N23ATXV. Both parts share identical isolation voltage, channel configuration, current transfer ratio, output current capability, and Vce saturation specifications. The JANTX4N23A maintains active product status with ROHS3 compliance, providing improved regulatory alignment compared to the non-compliant 4N23ATXV. The maximum output voltage specification increases from 35V to 40V on the substitute, which does not restrict compatibility in applications designed for the original part. The operating temperature range narrows from -65°C to -55°C minimum on the JANTX4N23A; applications requiring operation below -55°C must retain the original 4N23ATXV. Both parts use identical TO-78-6 metal can through-hole packaging with matching pin configurations.

Frequently Asked Questions (FAQ)

Q: Can JANTX4N23A directly replace 4N23ATXV in existing designs?

A: Yes, for applications operating within the -55°C to 125°C temperature range. The JANTX4N23A matches all critical electrical parameters: 1000VDC isolation, 60% minimum current transfer ratio, 50mA output current, and 300mV Vce saturation. Both use TO-78-6 metal can packaging with identical pinouts. Applications requiring operation below -55°C must use the original 4N23ATXV.

Q: What are the key differences between these parts?

A: The primary differences are product status and compliance. The 4N23ATXV is obsolete and RoHS non-compliant, while JANTX4N23A is active and ROHS3 compliant. The JANTX4N23A provides 40V maximum output voltage versus 35V on the original, and operates to -55°C minimum versus -65°C on the 4N23ATXV.

Q: Are there any package or pinout differences?

A: No. Both parts use TO-78-6 metal can through-hole packaging with identical pin configurations and mounting requirements.

Q: Which part should be selected for new designs?

A: The JANTX4N23A should be selected for new designs due to active product status and ROHS3 compliance. The 4N23ATXV is obsolete and should only be retained for legacy system support where the extended -65°C minimum temperature is required.

Q: What isolation voltage do these parts provide?

A: Both the 4N23ATXV and JANTX4N23A provide 1000VDC isolation voltage, meeting high-voltage isolation requirements in single-channel optoisolator applications.