Q8012RH2TP Equivalent & Substitute Parts

Part Overview

The Q8012RH2TP is an Alternistor-type TRIAC manufactured by Littelfuse Inc., rated for 800 V off-state voltage and 12 A on-state current in a Through Hole TO-220AB package. This snubberless design is suitable for alternating current switching applications requiring robust gate characteristics. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while preserving package compatibility and thermal operating ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	800	V
Current - On State (It (RMS)) (Max)	12	A
Voltage - Gate Trigger (Vgt) (Max)	1.3	V
Current - Gate Trigger (Igt) (Max)	10	mA
Current - Hold (Ih) (Max)	15	mA
Operating Temperature Range	-40 to 125	°C
Package / Case	TO-220-3	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution eligibility for the Q8012RH2TP is determined by the following critical parameters:

Voltage Rating: Off-state voltage must be 800 V or greater
Current Rating: On-state current (It (RMS)) must be 12 A or greater
Gate Trigger Voltage (Vgt): Maximum 1.3 V to ensure gate compatibility
Gate Trigger Current (Igt): Maximum 10 mA
Hold Current (Ih): Maximum 15 mA
Package Compatibility: TO-220-3 or TO-220 package format
Mounting Type: Through Hole configuration
Compliance: RoHS3 compliant, MSL 1 rating

The identified substitute parts meet or exceed these parameters while maintaining functional equivalence in 800 V / 12+ A TRIAC applications.

Parameter Comparison

Parameter	Q8012RH2TP (Main)	BTA316-800E,127	T1610T-8T
Manufacturer	Littelfuse Inc.	WeEn Semiconductors	STMicroelectronics
Voltage - Off State	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	12 A	16 A	16 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.5 V	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA	10 mA	10 mA
Current - Hold (Ih) (Max)	15 mA	15 mA	15 mA
Current - Non Rep. Surge 50Hz	110 A	140 A	120 A
Current - Non Rep. Surge 60Hz	120 A	150 A	126 A
Operating Temperature Range	-40 to 125°C	125°C (TJ)	-40 to 150°C
Package / Case	TO-220-3	TO-220-3	TO-220-3
Supplier Device Package	TO-220AB	TO-220AB	TO-220
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both substitute parts satisfy the electrical requirements for Q8012RH2TP replacement in 800 V / 12 A TRIAC applications:

BTA316-800E,127 (WeEn Semiconductors): Meets all critical parameters with 16 A on-state current capability and 1.5 V maximum gate trigger voltage. RoHS3 compliant with unlimited MSL rating. Operating temperature specification limited to 125°C (TJ). Suitable for applications where the higher current rating provides design margin.

T1610T-8T (STMicroelectronics): Meets all critical parameters with 16 A on-state current capability and 1.3 V maximum gate trigger voltage matching the main part specification. RoHS3 compliant with unlimited MSL rating. Extended operating temperature range to 150°C (TJ) provides thermal margin for high-ambient applications. Supplier device package designation is TO-220 versus TO-220AB.

Both parts maintain Active product status and full regulatory compliance. Selection between substitutes depends on application-specific thermal requirements and package variant compatibility.

Frequently Asked Questions (FAQ)

Q: Can BTA316-800E,127 replace Q8012RH2TP directly?

A: Yes. The BTA316-800E,127 meets all critical electrical parameters: 800 V off-state voltage, 16 A on-state current (exceeds 12 A requirement), 10 mA maximum gate trigger current, and 15 mA maximum hold current. TO-220AB package compatibility is confirmed. Gate trigger voltage of 1.5 V is within acceptable tolerance for most applications, though 0.2 V higher than the main part.

Q: Can T1610T-8T replace Q8012RH2TP directly?

A: Yes. The T1610T-8T meets all critical electrical parameters: 800 V off-state voltage, 16 A on-state current, 1.3 V maximum gate trigger voltage (matching the main part), 10 mA maximum gate trigger current, and 15 mA maximum hold current. TO-220 package compatibility is confirmed. Extended temperature range to 150°C provides additional thermal capability.

Q: What is the difference between TO-220AB and TO-220 package designations?

A: Both designations refer to the same physical TO-220-3 package format with three leads suitable for Through Hole mounting. The suffix designations (AB vs. standard) indicate minor variations in lead forming or supplier specifications but do not affect mechanical or electrical compatibility in standard applications.

Q: Are all three parts RoHS3 compliant?

A: Yes. Q8012RH2TP, BTA316-800E,127, and T1610T-8T are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute part has the better thermal performance?

A: T1610T-8T specifies an extended operating temperature range to 150°C (TJ) compared to BTA316-800E,127 at 125°C (TJ). For applications requiring operation at elevated ambient temperatures, T1610T-8T provides additional thermal margin.

Q: Can these parts be used interchangeably in existing designs?

A: Substitution is electrically valid based on the parameter comparison table. However, circuit-level validation is required to confirm gate drive compatibility, particularly regarding the 1.5 V gate trigger voltage specification of BTA316-800E,127 versus the 1.3 V specification of the main part and T1610T-8T.

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