TMA86S-L TRIAC 600V 8A Equivalent & Substitute Parts

Part Overview

The TMA86S-L is a standard TRIAC manufactured by Sanken Electric USA Inc., rated for 600V off-state voltage and 8A on-state current in a TO-220-3 Full Pack configuration. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 125°C and is RoHS compliant with MSL 1 rating.

Key Parameters

Parameter	Value
Manufacturer Part Number	TMA86S-L
Manufacturer	Sanken Electric USA Inc.
Category	Thyristors
Triac Type	Standard
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	8 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	30 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	80A, 84A
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack
Product Status	Obsolete
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution for the TMA86S-L is determined by the following critical parameters:

Voltage - Off State: 600V minimum (higher voltage ratings are acceptable)
Current - On State: 8A minimum (equal or higher ratings are acceptable)
Triac Type: Standard configuration preferred for direct replacement
Package / Case: TO-220-3 form factor for mechanical compatibility
Operating Temperature: -40°C to 125°C range
Gate Trigger characteristics: Vgt and Igt values within acceptable design margins

The substitute parts identified fall into two categories: manufacturer-recommended equivalents and similar alternatives with parameter variations that require design consideration.

Parameter Comparison

Parameter	TMA86S-L	TMG3C80F5	Q6006L5TP	T435T-600FP
Manufacturer	Sanken Electric USA Inc.	Sanken Electric USA Inc.	Littelfuse Inc.	STMicroelectronics
Voltage - Off State	600 V	800 V	600 V	600 V
Current - On State (It (RMS)) (Max)	8 A	8 A	6 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	—	2.5 V	1.3 V
Current - Gate Trigger (Igt) (Max)	30 mA	—	50 mA	35 mA
Triac Type	Standard	—	Standard	Alternistor - Snubberless
Operating Temperature	-40°C ~ 125°C	—	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	TO-220-3 Full Pack	—	TO-220-3 Isolated Tab	TO-220-3 Full Pack
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TMG3C80F5 (Sanken Electric USA Inc.) — Manufacturer-recommended equivalent. Maintains same manufacturer lineage and 8A current rating. Elevated voltage rating of 800V provides additional design margin. Active product status ensures long-term availability and supply chain stability. RoHS compliant. Recommended for direct replacement where voltage headroom is beneficial.

Q6006L5TP (Littelfuse Inc.) — Active product with standard TRIAC configuration and matching 600V voltage rating. Current rating reduced to 6A, which is below the original 8A specification. Gate trigger parameters (Vgt 2.5V, Igt 50mA) differ from the original. Package variant uses isolated tab configuration. Suitable only where 6A current capacity meets application requirements. ROHS3 compliant.

T435T-600FP (STMicroelectronics) — Active product with Alternistor snubberless configuration, differing from the standard TRIAC type of the original. Current rating significantly reduced to 4A. Voltage rating matches at 600V. Gate trigger voltage lower at 1.3V. Package matches TO-220-3 Full Pack form factor. ROHS3 compliant. Applicable only where snubberless operation and reduced current capacity are acceptable.

Frequently Asked Questions (FAQ)

Q: Can TMG3C80F5 be used as a direct drop-in replacement for TMA86S-L?

A: TMG3C80F5 is the manufacturer-recommended equivalent from Sanken Electric USA Inc. It maintains the 8A current rating and TO-220-3 package compatibility. The 800V voltage rating is higher than the original 600V specification, which is acceptable in most applications. Verify gate trigger characteristics and thermal management in your specific circuit design.

Q: Why is the current rating lower in Q6006L5TP and T435T-600FP?

A: Q6006L5TP is rated for 6A and T435T-600FP for 4A, both below the original 8A specification. These parts are listed as similar alternatives rather than direct equivalents. Selection depends on whether your application can operate within the reduced current capacity. Exceeding the rated current of a substitute part will result in device failure.

Q: What is the difference between TO-220-3 Full Pack and TO-220-3 Isolated Tab packaging?

A: Both are TO-220-3 form factors suitable for through-hole mounting. Full Pack configuration has the tab electrically connected to the case. Isolated Tab configuration electrically isolates the tab from the case. Verify your PCB design and thermal management approach before selecting between these variants.

Q: Are all substitute parts RoHS compliant?

A: Yes. TMA86S-L is RoHS Compliant. TMG3C80F5 is RoHS Compliant. Q6006L5TP and T435T-600FP are both ROHS3 Compliant. All parts meet RoHS requirements for new designs.

Q: What is the significance of the Alternistor configuration in T435T-600FP?

A: Alternistor refers to a snubberless TRIAC design that reduces electromagnetic interference and eliminates the need for external snubber circuits in many applications. This differs from the standard TRIAC configuration of the original part. Snubberless operation may simplify circuit design but requires verification that gate trigger and current characteristics are compatible with your application.

Q: Can I use a higher voltage-rated TRIAC in place of the 600V TMA86S-L?

A: Yes, within design constraints. TMG3C80F5 at 800V is acceptable as a substitute. Higher voltage ratings provide additional design margin and do not compromise functionality in applications designed for 600V operation. Verify that other electrical characteristics (current, gate trigger, temperature range) remain compatible.

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