JAN4N49 Equivalent & Substitute Parts

Part Overview

The JAN4N49 is an optoisolator transistor with base output manufactured by TT Electronics / Optek Technology. This component provides 1000VDC isolation with a single channel configuration in a TO-78-6 metal can package. The device is designed for applications requiring galvanic isolation between input and output circuits with transistor-based switching capability.

The JAN4N49 maintains Active product status with 2900 units in current inventory. Identifying equivalent and substitute parts is essential for supply chain continuity, design flexibility, and procurement optimization when the primary part number becomes unavailable or when alternative sourcing is required.

Substiute Parts

JAN4N49

TT Electronics / Optek TechnologyIn Stock: 2935JAN4N49 Datasheet

Current PartRFQ

JANTX4N49A

TT Electronics/Optek TechnologyIn Stock: 10442JANTX4N49A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the JAN4N49 are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Voltage - Isolation: 1000VDC
• Number of Channels: 1
• Output Type: Transistor with Base
• Current Transfer Ratio Range: 200% (Min) @ 1mA to 1000% (Max) @ 1mA
• Voltage - Output (Max): 40V
• Current - Output / Channel: 50mA
• Vce Saturation (Max): 300mV
• Package / Case: TO-78-6 Metal Can
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 125°C

All substitute parts must match these parameters exactly to ensure functional and mechanical compatibility within the same circuit design without modification.

Parameter Comparison

Engineering Selection Recommendations

The JANTX4N49A is a parametric equivalent to the JAN4N49 with identical electrical and mechanical specifications. Both parts are manufactured by TT Electronics / Optek Technology and maintain Active product status. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

The JANTX4N49A offers higher inventory availability at 10400 units compared to 2900 units for the JAN4N49, providing improved supply chain flexibility. The identical parameter set ensures direct substitution without circuit redesign or performance degradation.

Selection between these parts should be based on procurement lead time, inventory availability, and cost considerations, as all technical and compliance parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the JANTX4N49A be used as a direct replacement for the JAN4N49?

A: Yes. The JANTX4N49A is a parametric equivalent with identical isolation voltage (1000VDC), current transfer ratio (200%-1000% @ 1mA), output characteristics (40V max, 50mA per channel), and package configuration (TO-78-6 metal can through-hole). No circuit modifications are required.

Q: Are there any differences in compliance or environmental ratings between these parts?

A: No. Both the JAN4N49 and JANTX4N49A are ROHS3 compliant with MSL rating of 1 (Unlimited). Both maintain REACH unaffected status and identical ECCN and HTSUS classifications.

Q: What is the significance of the TO-78-6 package for substitution?

A: The TO-78-6 metal can package is a through-hole component with fixed pin configuration and mechanical dimensions. Both parts use this identical package, ensuring compatibility with existing PCB layouts and assembly processes without modification.

Q: How do the current transfer ratios affect substitution eligibility?

A: Current transfer ratio defines the optical coupling efficiency between input and output. Both parts specify identical ranges (200% minimum to 1000% maximum at 1mA input), ensuring equivalent switching performance and circuit behavior in isolation applications.

Q: Is inventory status a factor in substitution decisions?

A: Inventory status is a supply chain consideration rather than a technical substitution criterion. The JANTX4N49A has higher availability (10400 units) compared to the JAN4N49 (2900 units), which may influence procurement strategy but does not affect functional compatibility.