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S6004DS2TP Equivalent & Substitute Parts
Part Overview
The S6004DS2TP is a Sensitive Gate SCR (Silicon Controlled Rectifier) rated for 600V off-state voltage and 4A RMS on-state current, manufactured by Littelfuse Inc. in TO-252 (DPAK) surface mount packaging. This component is Active status and widely used in power control applications requiring low gate trigger current and voltage characteristics.
Substitute parts are necessary when the original component becomes unavailable, when higher current ratings are required for design margin, or when alternative gate sensitivity types better suit application requirements while maintaining electrical compatibility within the 600V voltage class and TO-252 package family.
Substiute Parts
Key Parameters
| Parameter | S6004DS2TP | Unit |
|---|---|---|
| Voltage - Off State | 600 | V |
| Voltage - Gate Trigger (Vgt) Max | 800 | mV |
| Current - Gate Trigger (Igt) Max | 200 | µA |
| Voltage - On State (Vtm) Max | 1.6 | V |
| Current - On State (It RMS) Max | 4 | A |
| Current - Hold (Ih) Max | 6 | mA |
| SCR Type | Sensitive Gate | — |
| Operating Temperature | -40 to 110 | °C |
| Package / Case | TO-252-3 (DPAK) | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution eligibility is determined by the following criteria:
Mandatory Compatibility Parameters:
- Voltage - Off State: 600V (all substitutes must match)
- Package / Case: TO-252-3 DPAK (all substitutes must match)
- Mounting Type: Surface Mount (all substitutes must match)
- RoHS Status: ROHS3 Compliant (all substitutes must match)
Current Rating Flexibility: Current ratings may be equal to or higher than the original 4A RMS, as higher-rated devices operate within the same voltage and thermal envelope with backward compatibility.
Gate Sensitivity Variants: Two SCR types are available: Sensitive Gate (lower Vgt and Igt) and Standard Recovery (higher Igt). Both types are functionally compatible within the same voltage and current class, with selection based on gate drive circuit requirements.
Packaging Format: Substitutes are available in Tube, Tape & Reel (TR), and Cut Tape (CT) formats. Format selection depends on assembly process requirements and does not affect electrical compatibility.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Off State (V) | Vgt Max (mV) | Igt Max (µA) | Vtm Max (V) | It RMS Max (A) | Ih Max (mA) | SCR Type | Temp Range (°C) | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|
| S6004DS2TP | Littelfuse | 600 | 800 | 200 | 1.6 | 4 | 6 | Sensitive Gate | -40 to 110 | Tube |
| MCR8DCMT4G | Littelfuse | 600 | 1000 | 15 | 1.8 | 8 | 30 | Standard Recovery | -40 to 125 | TR |
| MCR12DCMT4G | Littelfuse | 600 | 1000 | 20 | 1.9 | 12 | 40 | Standard Recovery | -40 to 125 | TR |
| MCR12DSMT4G | Littelfuse | 600 | 1000 | 200 | 1.9 | 12 | 6 | Sensitive Gate | -40 to 110 | TR |
| TN805-600B-TR | STMicroelectronics | 600 | 1300 | 5 | 1.6 | 8 | 25 | Standard Recovery | -40 to 125 | TR |
| TN1205T-600B-TR | STMicroelectronics | 600 | 1300 | 5 | 1.6 | 12 | 15 | Standard Recovery | -40 to 125 | CT |
| TN1215-600B | STMicroelectronics | 600 | 1300 | 15 | 1.6 | 12 | 40 | Standard Recovery | -40 to 125 | Tube |
| TN1215-600B-TR | STMicroelectronics | 600 | 1300 | 15 | 1.6 | 12 | 40 | Standard Recovery | -40 to 125 | TR |
| TN1515-600B-TR | STMicroelectronics | 600 | 1300 | 15 | 1.6 | 15 | 40 | Standard Recovery | -40 to 125 | TR |
| TS1220-600B | STMicroelectronics | 600 | 800 | 200 | 1.6 | 12 | 5 | Sensitive Gate | -40 to 125 | Tube |
| TS1220-600B-TR | STMicroelectronics | 600 | 800 | 200 | 1.6 | 12 | 5 | Sensitive Gate | -40 to 125 | CT |
Engineering Selection Recommendations
Direct Sensitive Gate Substitutes (Identical Gate Characteristics):
MCR12DSMT4G and TS1220-600B series are direct functional equivalents with matching Vgt (800 mV max) and Igt (200 µA max) specifications. These parts support higher current ratings (12A RMS vs. 4A RMS) and extended temperature range (-40 to 125°C vs. -40 to 110°C). MCR12DSMT4G is REACH Affected; TS1220-600B series is REACH Unaffected. Both are ROHS3 Compliant.
Standard Recovery Alternatives (Higher Gate Drive Requirements):
MCR8DCMT4G, TN805-600B-TR, and TN1205T-600B-TR provide 8A RMS current ratings with Standard Recovery characteristics. These require higher gate trigger current (5–20 µA vs. 200 µA) and voltage (1000–1300 mV vs. 800 mV). All support -40 to 125°C operation and are ROHS3 Compliant and REACH Unaffected.
MCR12DCMT4G, TN1215-600B, TN1215-600B-TR, and TN1515-600B-TR provide 12–15A RMS ratings with Standard Recovery characteristics. These require higher gate drive and support extended temperature range. All are ROHS3 Compliant and REACH Unaffected.
Packaging and Inventory Considerations:
Tube packaging (S6004DS2TP, TN1215-600B, TS1220-600B) suits manual assembly and lower-volume applications. Tape & Reel (TR) and Cut Tape (CT) formats support automated pick-and-place assembly. Inventory availability ranges from 2,100 to 103,100 pieces across substitute options.
Frequently Asked Questions (FAQ)
Q: Can I use a higher current-rated SCR as a direct substitute?
A: Yes. Higher current ratings (8A, 12A, or 15A RMS) are backward compatible with the 4A RMS S6004DS2TP in the same 600V voltage class and TO-252 package. The device will operate within its thermal and electrical envelope. Verify gate drive circuit compatibility, particularly for Standard Recovery types requiring higher Igt.
Q: What is the difference between Sensitive Gate and Standard Recovery SCRs?
A: Sensitive Gate SCRs (S6004DS2TP, MCR12DSMT4G, TS1220-600B) require lower gate trigger voltage (800 mV max) and current (200 µA max), enabling simpler gate drive circuits. Standard Recovery SCRs require higher gate drive (Vgt 1000–1300 mV, Igt 5–20 mA) but offer higher current ratings and extended temperature range. Selection depends on gate drive circuit design.
Q: Are all substitutes available in the same packaging format?
A: No. The S6004DS2TP is supplied in Tube format. Substitutes are available in Tube, Tape & Reel (TR), and Cut Tape (CT) formats. Format selection depends on assembly process. Electrical specifications remain identical across packaging formats for the same part number.
Q: What is the temperature operating range difference?
A: The S6004DS2TP operates from -40 to 110°C. Most substitutes extend to -40 to 125°C, providing 15°C additional high-temperature margin. This is beneficial for applications with elevated ambient or self-heating conditions.
Q: Are all substitutes RoHS3 Compliant?
A: Yes. All listed substitutes are ROHS3 Compliant. MCR12DSMT4G is REACH Affected; all other substitutes are REACH Unaffected. Verify REACH compliance requirements for your application and supply chain.
Q: Can I mix Littelfuse and STMicroelectronics parts in the same design?
A: Yes. Both manufacturers' parts meet identical electrical specifications within their respective type categories (Sensitive Gate or Standard Recovery) and share the same TO-252 package. Cross-manufacturer substitution is electrically valid; verify qualification and supply chain requirements.
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