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Q6006NH4TP TRIAC Alternistor 600V 6A Equivalent & Substitute Parts
Part Overview
The Q6006NH4TP is a Littelfuse TRIAC Alternistor operating at 600V with 6A on-state current in a surface mount TO-263 (D2PAK) package. This snubberless thyristor is designed for AC switching applications requiring low gate trigger voltage and controlled surge current characteristics. The part is active and RoHS3 compliant with unlimited moisture sensitivity rating.
Substitute parts are necessary when the original part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for higher current ratings or enhanced gate sensitivity within the same voltage class and package footprint.
Substiute Parts
Key Parameters
| Parameter | Q6006NH4TP | Unit |
|---|---|---|
| Voltage - Off State | 600 | V |
| Current - On State (It RMS) Max | 6 | A |
| Voltage - Gate Trigger (Vgt) Max | 1.3 | V |
| Current - Gate Trigger (Igt) Max | 35 | mA |
| Current - Hold (Ih) Max | 35 | mA |
| Current - Non Rep. Surge (50/60Hz) | 80A / 85A | A |
| Operating Temperature Range | -40 to 125 | °C |
| Package / Case | TO-263-3, D2PAK | — |
| Triac Type | Alternistor - Snubberless | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the Q6006NH4TP is determined by the following criteria:
Mandatory Compatibility Parameters:
- Voltage - Off State: 600V (exact match required)
- Package / Case: TO-263-3, D2PAK (2 Leads + Tab) (exact match required)
- Configuration: Single (exact match required)
- Mounting Type: Surface Mount (exact match required)
Allowable Variation Parameters:
- Current - On State (It RMS) Max: Equal to or greater than 6A
- Voltage - Gate Trigger (Vgt) Max: Equal to or less than 1.3V
- Current - Gate Trigger (Igt) Max: Equal to or less than 35mA
- Current - Hold (Ih) Max: Equal to or less than 35mA
- Current - Non Rep. Surge: Equal to or greater than specified values
- Operating Temperature Range: May extend beyond -40 to 125°C
- Triac Type: Alternistor - Snubberless or Standard types acceptable
- Packaging Format: Tube, Cut Tape (CT), or Tape & Reel (TR) formats acceptable
Substitute parts must maintain 600V blocking voltage and D2PAK package compatibility. Current ratings may be higher, gate trigger parameters may be lower (more sensitive), and operating temperature ranges may be extended.
Parameter Comparison
| Part Number | Manufacturer | Voltage (V) | Current (A) | Vgt Max (V) | Igt Max (mA) | Ih Max (mA) | Temp Range (°C) | Triac Type | Packaging |
|---|---|---|---|---|---|---|---|---|---|
| Q6006NH4TP | Littelfuse | 600 | 6 | 1.3 | 35 | 35 | -40 to 125 | Alternistor - Snubberless | Tube |
| BTA312B-600C,118 | WeEn Semiconductors | 600 | 12 | 1.5 | 35 | 35 | -40 to 125 | Standard | Tape & Reel |
| BTA312B-600CT,118 | WeEn Semiconductors | 600 | 12 | 1.5 | 35 | 35 | -40 to 150 | Standard | Tape & Reel |
| T1010H-6G-TR | STMicroelectronics | 600 | 10 | 1.0 | 10 | 25 | -40 to 150 | Logic - Sensitive Gate | Tape & Reel |
| T1035H-6G-TR | STMicroelectronics | 600 | 10 | 1.0 | 35 | 35 | -40 to 150 | Alternistor - Snubberless | Cut Tape & Digi-Reel |
| T1235-600G | STMicroelectronics | 600 | 12 | 1.3 | 35 | 35 | -40 to 125 | Alternistor - Snubberless | Tube |
| T1235-600G-TR | STMicroelectronics | 600 | 12 | 1.3 | 35 | 35 | -40 to 125 | Alternistor - Snubberless | Cut Tape & Digi-Reel |
| T1235H-6G | STMicroelectronics | 600 | 12 | 1.0 | 35 | 35 | -40 to 150 | Alternistor - Snubberless | Tube |
| T1235H-6G-TR | STMicroelectronics | 600 | 12 | 1.0 | 35 | 35 | -40 to 150 | Alternistor - Snubberless | Cut Tape & Digi-Reel |
| T1250-600G-TR | STMicroelectronics | 600 | 12 | 1.3 | 50 | 50 | -40 to 125 | Alternistor - Snubberless | Cut Tape & Digi-Reel |
| T1635-600G | STMicroelectronics | 600 | 16 | 1.3 | 35 | 35 | -40 to 125 | Alternistor - Snubberless | Tube |
Engineering Selection Recommendations
All listed substitute parts maintain 600V blocking voltage and TO-263 D2PAK package compatibility with the Q6006NH4TP. Selection among substitutes depends on application current requirements and gate sensitivity specifications.
For applications requiring exact current rating (6A): No direct 6A substitute exists in the provided list. The T1010H-6G-TR and T1035H-6G-TR offer 10A ratings with enhanced gate sensitivity (1.0V Vgt) and extended temperature range to 150°C, suitable for designs with current margin.
For applications tolerating higher current ratings: T1235-600G, T1235-600G-TR, T1235H-6G, T1235H-6G-TR, and T1250-600G-TR provide 12A ratings. T1235H variants feature 1.0V gate trigger voltage and 150°C maximum junction temperature. T1250-600G-TR maintains 1.3V gate trigger matching the original part.
For applications requiring maximum current capacity: T1635-600G provides 16A on-state current with 1.3V gate trigger voltage and -40 to 125°C operating range.
For standard TRIAC operation without snubberless requirements: BTA312B-600C,118 and BTA312B-600CT,118 from WeEn Semiconductors provide 12A standard TRIAC operation. BTA312B-600CT,118 extends maximum junction temperature to 150°C and is REACH Affected.
All substitute parts are RoHS3 compliant with MSL 1 (Unlimited) rating. Packaging formats include Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel options to accommodate different assembly processes.
Frequently Asked Questions (FAQ)
Q: Can I use a higher current-rated TRIAC as a substitute for the Q6006NH4TP?
A: Yes. Higher current ratings (10A, 12A, 16A) are acceptable substitutes provided all other parameters remain compatible: 600V blocking voltage, TO-263 D2PAK package, and gate trigger specifications equal to or lower than the original. Higher current capacity provides design margin without affecting circuit operation.
Q: What is the difference between Alternistor - Snubberless and Standard TRIAC types?
A: Alternistor - Snubberless TRIACs are optimized for applications without external snubber networks, offering improved dV/dt immunity. Standard TRIACs may require snubber circuits in sensitive applications. Both types are electrically compatible at the same voltage and current ratings within the same package.
Q: Does gate trigger voltage (Vgt) affect substitution compatibility?
A: Yes. Lower Vgt values indicate more sensitive gate triggering. A substitute with Vgt of 1.0V will trigger more easily than the original 1.3V specification. This is acceptable for most applications but may require gate drive circuit adjustment if the original design relied on the higher threshold.
Q: Are Tube and Tape & Reel packaging formats interchangeable?
A: Packaging formats are not interchangeable for assembly purposes. Tube packaging is used for manual or older automated assembly. Tape & Reel (TR) and Cut Tape (CT) formats are for high-speed automated pick-and-place assembly. Select the packaging format matching your assembly equipment and process requirements.
Q: Can I substitute a part with extended temperature range (-40 to 150°C) for one rated -40 to 125°C?
A: Yes. Extended temperature range is a superset of the original specification and provides additional operational margin. The part will function correctly across the original temperature range and beyond.
Q: What does MSL 1 (Unlimited) moisture sensitivity mean?
A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This applies to all listed substitute parts, matching the original Q6006NH4TP specification.
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