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Q6012NH5TP TRIAC Alternistor 600V 12A Equivalent & Substitute Parts
Part Overview
The Q6012NH5TP is a Littelfuse TRIAC Alternistor operating at 600V with 12A on-state current in a surface mount D2PAK (TO-263) package. This snubberless thyristor is designed for AC switching applications requiring low gate trigger voltage and integrated EMI suppression. The part is active and in production with RoHS3 compliance. Substitute parts are identified based on matching electrical performance within the 600V class and D2PAK package constraint, accommodating variations in current rating, gate trigger characteristics, and temperature operating range.
Substiute Parts
Key Parameters
| Parameter | Q6012NH5TP | Unit |
|---|---|---|
| Voltage - Off State | 600 | V |
| Current - On State (It RMS Max) | 12 | A |
| Voltage - Gate Trigger (Vgt Max) | 1.3 | V |
| Current - Gate Trigger (Igt Max) | 50 | mA |
| Current - Hold (Ih Max) | 50 | mA |
| Current - Non Rep. Surge (50/60Hz) | 110A / 120A | A |
| Operating Temperature Range | -40 to 125 | °C |
| Triac Type | Alternistor - Snubberless | — |
| Package / Case | TO-263-3, D2PAK | — |
| Mounting Type | Surface Mount | — |
Substitute Part Grouping Explanation
Substitution eligibility is determined by three critical parameters: (1) Voltage - Off State must equal 600V, (2) Package / Case must be TO-263-3 D2PAK, and (3) Current - On State (It RMS) must be equal to or greater than 12A. Within these constraints, variations in gate trigger voltage (Vgt), gate trigger current (Igt), hold current (Ih), and operating temperature range are acceptable. Triac type (Alternistor vs. Standard) and surge current ratings are secondary considerations that do not disqualify substitution when primary parameters align.
Substitute parts are grouped into two categories:
Category A: Alternistor - Snubberless (Direct Type Match) Parts maintaining the snubberless Alternistor topology with 12A on-state current and 600V rating.
Category B: Standard TRIAC (Higher Current Rating) Parts with Standard TRIAC topology rated at 16A on-state current, providing current margin above the 12A requirement.
Parameter Comparison
| Part Number | Manufacturer | Triac Type | Voltage (V) | Current It RMS (A) | Vgt Max (V) | Igt Max (mA) | Ih Max (mA) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|
| Q6012NH5TP | Littelfuse | Alternistor - Snubberless | 600 | 12 | 1.3 | 50 | 50 | -40 to 125 | D2PAK |
| BTA316B-600B,118 | WeEn Semiconductors | Standard | 600 | 16 | 1.5 | 50 | 60 | — | D2PAK |
| BTA316B-600B0J | WeEn Semiconductors | Standard | 600 | 16 | 1.5 | 50 | 60 | — | D2PAK |
| T1050H-6G | STMicroelectronics | Alternistor - Snubberless | 600 | 10 | 1.0 | 50 | 75 | -40 to 150 | D2PAK |
| T1050H-6G-TR | STMicroelectronics | Alternistor - Snubberless | 600 | 10 | 1.0 | 50 | 75 | -40 to 150 | D2PAK |
| T1235-600G | STMicroelectronics | Alternistor - Snubberless | 600 | 12 | 1.3 | 35 | 35 | -40 to 125 | D2PAK |
| T1235-600G-TR | STMicroelectronics | Alternistor - Snubberless | 600 | 12 | 1.3 | 35 | 35 | -40 to 125 | D2PAK |
| T1235H-6G-TR | STMicroelectronics | Alternistor - Snubberless | 600 | 12 | 1.0 | 35 | 35 | -40 to 150 | D2PAK |
| T1250-600G-TR | STMicroelectronics | Alternistor - Snubberless | 600 | 12 | 1.3 | 50 | 50 | -40 to 125 | D2PAK |
| T1250H-6G | STMicroelectronics | Alternistor - Snubberless | 600 | 12 | 1.0 | 50 | 75 | -40 to 150 | D2PAK |
| T1250H-6G-TR | STMicroelectronics | Alternistor - Snubberless | 600 | 12 | 1.0 | 50 | 75 | -40 to 150 | D2PAK |
Engineering Selection Recommendations
Direct Equivalents (Alternistor - Snubberless, 12A, 600V)
T1235-600G, T1235-600G-TR, T1250-600G-TR, and T1250H-6G-TR are direct functional equivalents to Q6012NH5TP. All maintain the 12A on-state current, 600V off-state voltage, and D2PAK package. T1235 variants match the 1.3V gate trigger voltage specification. T1250 variants offer lower gate trigger voltage (1.0V) and extended temperature range to 150°C. T1235H-6G-TR and T1250H-6G provide the lowest gate trigger voltage (1.0V) with extended temperature capability. All STMicroelectronics parts are RoHS3 compliant and REACH unaffected.
Higher Current Margin (Standard TRIAC, 16A, 600V)
BTA316B-600B,118 and BTA316B-600B0J from WeEn Semiconductors provide 16A on-state current, exceeding the 12A requirement by 33%. These Standard TRIAC devices operate at 600V in D2PAK packaging. Gate trigger voltage is 1.5V, slightly elevated compared to the Q6012NH5TP specification of 1.3V. Both variants are RoHS compliant. Selection of these parts is appropriate when circuit design permits higher current capacity and slightly higher gate trigger voltage.
Lower Current Rating (Alternistor - Snubberless, 10A, 600V)
T1050H-6G and T1050H-6G-TR from STMicroelectronics are rated at 10A on-state current, below the 12A requirement of Q6012NH5TP. These parts are not recommended as direct substitutes due to insufficient current rating. Selection is appropriate only when circuit load current does not exceed 10A.
Frequently Asked Questions (FAQ)
Q: Can T1050H-6G substitute for Q6012NH5TP?
A: No. The T1050H-6G is rated at 10A on-state current, which is below the 12A specification of Q6012NH5TP. Use only when circuit load current is confirmed below 10A.
Q: What is the difference between T1235-600G and T1235H-6G-TR?
A: Both are 12A, 600V Alternistor devices in D2PAK. T1235H-6G-TR features lower gate trigger voltage (1.0V vs. 1.3V) and extended operating temperature range (-40 to 150°C vs. -40 to 125°C). T1235H-6G-TR is supplied in Cut Tape & Digi-Reel packaging; T1235-600G is supplied in Tube.
Q: Are BTA316B parts suitable replacements?
A: BTA316B-600B,118 and BTA316B-600B0J are suitable when higher current capacity (16A) is acceptable. These Standard TRIAC devices operate at 600V in D2PAK packaging. Gate trigger voltage is 1.5V, which is 0.2V higher than Q6012NH5TP. Verify circuit gate drive capability before selection.
Q: What packaging options are available?
A: All substitute parts use D2PAK (TO-263-3) surface mount packaging, matching Q6012NH5TP. Packaging format variations include Tube, Tape & Reel (TR), and Cut Tape & Digi-Reel. Packaging format does not affect electrical performance or PCB compatibility.
Q: Are all substitutes RoHS compliant?
A: All STMicroelectronics parts (T1050, T1235, T1250 series) are RoHS3 compliant and REACH unaffected. WeEn Semiconductors BTA316B parts are RoHS compliant. Verify compliance documentation for specific procurement requirements.
Q: Which substitute offers the widest operating temperature range?
A: T1235H-6G-TR, T1250H-6G, and T1250H-6G-TR operate from -40 to 150°C, extending 25°C above Q6012NH5TP. These parts are suitable for applications requiring extended temperature performance.
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