2N6071BT TRIAC Equivalent & Substitute Parts

Part Overview

The 2N6071BT is a Logic - Sensitive Gate TRIAC rated for 200 V off-state voltage and 4 A on-state current, housed in a TO-126 through-hole package. Manufactured by onsemi, this component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain identical electrical performance characteristics while meeting current availability and compliance requirements.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	200 V
Current - On State (It (RMS)) (Max)	4 A
Voltage - Gate Trigger (Vgt) (Max)	2.5 V
Current - Gate Trigger (Igt) (Max)	3 mA
Current - Hold (Ih) (Max)	15 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	30 A @ 60Hz
Operating Temperature Range	-40°C ~ 110°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-225AA, TO-126-3

Substitute Part Grouping Explanation

Substitution eligibility for the 2N6071BT is determined by strict equivalence across the following critical parameters:

Triac Type: Logic - Sensitive Gate configuration
Voltage - Off State: 200 V minimum rating
Current - On State (It (RMS)): 4 A maximum rating
Voltage - Gate Trigger (Vgt): 2.5 V maximum threshold
Operating Temperature Range: -40°C ~ 110°C (TJ)
Mounting Type: Through Hole
Package Compatibility: TO-225AA or TO-126-3 footprints

All identified substitute parts meet these core electrical and mechanical requirements. Variations in gate trigger current (Igt) and packaging format (Tube, Box, Bulk) do not affect functional substitutability within the specified parameter envelope.

Parameter Comparison

Parameter	2N6071BT (onsemi)	2N6071BTG (Littelfuse)	2N6071AG (Littelfuse Inc.)	2N6071ATG (onsemi)
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	200 V	200 V	200 V	200 V
Current - On State (It (RMS)) (Max)	4 A	4 A	4 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	2.5 V	2.5 V	2.5 V	2.5 V
Current - Gate Trigger (Igt) (Max)	3 mA	3 mA	5 mA	5 mA
Current - Hold (Ih) (Max)	15 mA	15 mA	15 mA	15 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	30 A @ 60Hz	30 A @ 60Hz	30 A @ 60Hz	30 A @ 60Hz
Operating Temperature Range	-40°C ~ 110°C (TJ)	-40°C ~ 110°C (TJ)	-40°C ~ 110°C (TJ)	-40°C ~ 110°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-225AA, TO-126-3	TO-225AA, TO-126-3	TO-225AA, TO-126-3	TO-225AA, TO-126-3
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

2N6071BTG (Littelfuse) is the primary direct substitute. It maintains identical electrical specifications and gate trigger current (3 mA), with active product status and ROHS3 compliance. Available in TO-225AA package format with tube packaging.

2N6071AG (Littelfuse Inc.) is a functional equivalent with gate trigger current of 5 mA, which remains within acceptable operating margins for sensitive-gate TRIAC applications. Active product status and ROHS3 compliance support long-term availability. Available in TO-225AA package format with box packaging and highest inventory level (14,100 pcs).

2N6071ATG (onsemi) is a functional equivalent with gate trigger current of 5 mA and active product status from the original manufacturer. Available in TO-225-3 package format with bulk packaging. RoHS status not specified in available data.

All three substitute parts are electrically compatible with the 2N6071BT within the specified parameter envelope. Selection should prioritize product status (all active), compliance certifications (ROHS3 for Littelfuse variants), and packaging format requirements for your application.

Frequently Asked Questions (FAQ)

Q: Can 2N6071BTG replace 2N6071BT directly? A: Yes. The 2N6071BTG maintains identical electrical specifications including gate trigger current (3 mA), voltage ratings, and current ratings. Package compatibility (TO-225AA) supports direct substitution in through-hole designs.

Q: What is the difference between 2N6071BTG and 2N6071AG? A: Both are functionally equivalent Logic - Sensitive Gate TRIACs with 200 V, 4 A ratings. The primary difference is gate trigger current: 2N6071BTG specifies 3 mA maximum, while 2N6071AG specifies 5 mA maximum. Both values remain within acceptable operating parameters for sensitive-gate applications. Packaging format differs (Tube vs. Box).

Q: Why is the 2N6071BT obsolete? A: The 2N6071BT is classified as obsolete by onsemi. Active equivalents from both Littelfuse and onsemi are available to support continued design implementation and production.

Q: Are there package compatibility concerns? A: All substitute parts support TO-225AA and TO-126-3 through-hole packages. Verify PCB footprint compatibility with your specific design. TO-225AA and TO-126-3 are mechanically compatible for through-hole mounting applications.

Q: Does RoHS compliance matter for my application? A: RoHS3 compliance is specified for 2N6071BTG and 2N6071AG (Littelfuse variants). If your application or regional requirements mandate RoHS compliance, these variants are preferred. The original 2N6071BT is RoHS non-compliant.

Q: Can I use 2N6071ATG as a substitute? A: Yes. The 2N6071ATG is functionally equivalent with 5 mA gate trigger current and active product status from onsemi. RoHS status is not specified in available documentation; verify compliance requirements for your application.

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