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Q6004R4TP TRIAC Equivalent & Substitute Parts
Part Overview
The Q6004R4TP is a standard TRIAC manufactured by Littelfuse Inc., rated for 600V off-state voltage and 4A on-state current in a TO-220AB through-hole package. This component is actively produced and widely used in AC switching applications requiring galvanic isolation and bidirectional control. Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining the same package configuration and compliance certifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Off State | 600 | V |
| Current - On State (It (RMS)) (Max) | 4 | A |
| Voltage - Gate Trigger (Vgt) (Max) | 1.3 | V |
| Current - Gate Trigger (Igt) (Max) | 25 | mA |
| Current - Hold (Ih) (Max) | 30 | mA |
| Operating Temperature Range | -40 to 125 | °C |
| Package / Case | TO-220-3 | |
| Mounting Type | Through Hole | |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the Q6004R4TP is determined by the following criteria:
Critical Parameters (Must Match or Exceed):
- Voltage - Off State: 600V minimum
- Package / Case: TO-220-3 (physical and electrical compatibility)
- Mounting Type: Through Hole
- Operating Temperature Range: -40°C to 125°C minimum
- RoHS Status: ROHS3 Compliant
Performance Parameters (Must Meet or Exceed):
- Current - On State (It (RMS)): 4A minimum
- Voltage - Gate Trigger (Vgt): 1.3V maximum
- Current - Gate Trigger (Igt): 25mA maximum
- Current - Hold (Ih): 30mA maximum
Substitute parts identified below satisfy all critical parameters and meet or exceed performance specifications, enabling direct replacement in circuit designs without modification to PCB layout or thermal management.
Parameter Comparison
| Parameter | Q6004R4TP (Littelfuse) | BTA06-600CWRG (STMicroelectronics) | T835T-6I (STMicroelectronics) |
|---|---|---|---|
| Voltage - Off State | 600V | 600V | 600V |
| Current - On State (It (RMS)) (Max) | 4A | 6A | 8A |
| Voltage - Gate Trigger (Vgt) (Max) | 1.3V | 1.3V | 1.3V |
| Current - Gate Trigger (Igt) (Max) | 25mA | 35mA | 35mA |
| Current - Hold (Ih) (Max) | 30mA | 35mA | 40mA |
| Operating Temperature Range | -40 to 125°C | -40 to 125°C | -40 to 125°C |
| Package / Case | TO-220-3 | TO-220-3 | TO-220-3 |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Both substitute parts are manufactured by STMicroelectronics and classified as Alternistor - Snubberless technology, compared to the standard TRIAC classification of the Q6004R4TP. All three components maintain identical off-state voltage (600V), gate trigger voltage (1.3V maximum), and operating temperature range (-40°C to 125°C).
The BTA06-600CWRG provides 6A on-state current capacity, exceeding the Q6004R4TP requirement of 4A. The T835T-6I provides 8A on-state current capacity. Both substitute parts are actively produced with high inventory availability and full compliance with ROHS3 and REACH requirements.
Selection between the main part and substitutes depends on application current requirements and thermal design constraints. All three parts share identical package configuration (TO-220-3) and through-hole mounting compatibility.
Frequently Asked Questions (FAQ)
Q: Can the BTA06-600CWRG directly replace the Q6004R4TP?
A: Yes. The BTA06-600CWRG meets all critical parameters: 600V off-state voltage, TO-220-3 package, through-hole mounting, -40°C to 125°C operating range, and ROHS3 compliance. The 6A on-state current rating exceeds the 4A requirement of the Q6004R4TP.
Q: What is the difference between standard TRIAC and Alternistor - Snubberless technology?
A: This information is not provided in the component specifications. Consult manufacturer datasheets for detailed technology comparisons.
Q: Can the T835T-6I replace the Q6004R4TP?
A: Yes. The T835T-6I meets all critical parameters: 600V off-state voltage, TO-220-3 package, through-hole mounting, -40°C to 125°C operating range, and ROHS3 compliance. The 8A on-state current rating exceeds the 4A requirement of the Q6004R4TP.
Q: Are there any differences in gate trigger current between these parts?
A: The Q6004R4TP specifies 25mA maximum gate trigger current. Both substitute parts specify 35mA maximum, which is higher but remains within acceptable operating margins for gate drive circuits designed for the original part.
Q: Do all three parts use the same pinout in the TO-220-3 package?
A: All three parts use the TO-220-3 package configuration. Verify pinout alignment with manufacturer datasheets before installation.
Q: What is the inventory status of these parts?
A: Q6004R4TP: 1941 pcs in stock. BTA06-600CWRG: 18654 pcs in stock. T835T-6I: 24890 pcs in stock.
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