4N47TX Optoisolator Equivalent & Substitute Parts

Part Overview

The 4N47TX is an optoisolator transistor with base output manufactured by TT Electronics/Optek Technology. This component provides 1000VDC isolation with a single channel transistor output configuration in a TO-78-6 metal can package. The 4N47TX is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

4N47TX

TT Electronics/Optek TechnologyIn Stock: 7504N47TX Datasheet

Current PartRFQ

JANTX4N47

TT Electronics/Optek TechnologyIn Stock: 782JANTX4N47 Datasheet

MFR RecommendedRFQ

JANTXV4N47

TT Electronics/Optek TechnologyIn Stock: 925JANTXV4N47 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 4N47TX are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Parameters for Substitution:

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

All identified substitute parts maintain identical electrical performance and mechanical compatibility with the 4N47TX while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

JANTX4N47 is the manufacturer-recommended substitute for the 4N47TX. This part maintains full electrical and mechanical compatibility while offering active product status and ROHS3 compliance. Selection of JANTX4N47 is appropriate for applications requiring standard performance specifications with improved regulatory compliance.

JANTXV4N47 is a parametric equivalent offering identical electrical performance and mechanical compatibility. This part also maintains active product status and ROHS3 compliance. The JANTXV4N47 designation indicates enhanced screening and qualification levels. Selection of JANTXV4N47 is appropriate for applications with stringent reliability or qualification requirements.

Both substitute parts are direct replacements for the obsolete 4N47TX in through-hole circuit board applications without modification to PCB layout or schematic design.

Frequently Asked Questions (FAQ)

Q: Can JANTX4N47 or JANTXV4N47 be used as direct replacements for 4N47TX?

A: Yes. Both parts are direct replacements. All critical electrical parameters (isolation voltage, current transfer ratio, output voltage, output current, saturation voltage) and mechanical specifications (TO-78-6 package, through-hole mounting) are identical to the 4N47TX.

Q: What is the difference between JANTX4N47 and JANTXV4N47?

A: Both parts meet identical electrical and mechanical specifications. The JANTXV4N47 designation indicates enhanced screening and qualification levels compared to JANTX4N47. Selection between these parts depends on application-specific reliability or qualification requirements.

Q: Why is the 4N47TX listed as obsolete?

A: The 4N47TX is no longer in active production. JANTX4N47 and JANTXV4N47 are the active equivalents from the same manufacturer and should be used for new designs and ongoing procurement.

Q: Are there any compliance differences between the 4N47TX and its substitutes?

A: Yes. The 4N47TX is RoHS non-compliant, while both JANTX4N47 and JANTXV4N47 are ROHS3 compliant. Both substitute parts maintain REACH Unaffected and EAR99 ECCN classifications identical to the original part.

Q: Can these parts be used in existing PCB designs without modification?

A: Yes. The TO-78-6 metal can package and through-hole mounting configuration are identical across all three parts. No PCB layout or schematic modifications are required.