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S6008DS3RP Equivalent & Substitute Parts
Part Overview
The S6008DS3RP is a 600V 8A Sensitive Gate SCR (Silicon Controlled Rectifier) manufactured by Littelfuse Inc. in Surface Mount TO-252 (DPAK) packaging. This thyristor is designed for applications requiring controlled rectification and switching at 600V blocking voltage with sensitive gate triggering characteristics. The part is Active status and RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).
Substitute parts are necessary when the original part becomes unavailable, when alternative manufacturers are preferred for supply chain diversification, or when design requirements allow for compatible alternatives with equivalent or enhanced electrical characteristics within the same package form factor.
Substiute Parts
Key Parameters
| Parameter | S6008DS3RP | Unit |
|---|---|---|
| Voltage - Off State | 600 | V |
| Voltage - Gate Trigger (Vgt) Max | 800 | mV |
| Current - Gate Trigger (Igt) Max | 500 | µA |
| Voltage - On State (Vtm) Max | 1.6 | V |
| Current - On State (It RMS) Max | 8 | A |
| Current - Hold (Ih) Max | 8 | mA |
| Current - Off State Max | 5 | µA |
| SCR Type | Sensitive Gate | - |
| Operating Temperature Range | -40 to 110 | °C |
| Package / Case | TO-252-3 DPAK | - |
| Mounting Type | Surface Mount | - |
Substitute Part Grouping Explanation
Substitution eligibility for the S6008DS3RP is determined by the following critical parameters:
Voltage Rating: All substitutes must maintain 600V off-state voltage to ensure equivalent blocking capability.
Current Rating: The 8A RMS on-state current is the primary current specification. Substitutes with equal or higher current ratings (8A, 12A, or 15A) are acceptable as they provide equal or enhanced current handling without derating.
SCR Type: The S6008DS3RP is a Sensitive Gate device. Direct substitutes include other Sensitive Gate SCRs (MCR8DSMT4G, MCR8DSMT4G, MCR12DSMT4G, TS1220-600B). Standard Recovery SCRs (MCR8DCMT4G, MCR12DCMT4G, TN series) are functionally compatible but have different gate trigger characteristics and hold current specifications.
Package: All substitutes use TO-252-3 DPAK (2 Leads + Tab) surface mount packaging, ensuring mechanical and thermal compatibility.
Operating Temperature: The S6008DS3RP operates from -40°C to 110°C. Substitutes with extended temperature ranges (-40°C to 125°C) are compatible and provide broader operational margins.
Compliance: All substitutes are RoHS3 compliant with MSL 1 rating, matching the original part's environmental specifications.
Parameter Comparison
| Parameter | S6008DS3RP | MCR8DSMT4G | MCR8DCMT4G | MCR12DSMT4G | MCR12DCMT4G | TN805-600B-TR | TN1215-600B-TR | TS1220-600B |
|---|---|---|---|---|---|---|---|---|
| Voltage - Off State (V) | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 |
| Voltage - Gate Trigger Max (mV) | 800 | 1000 | 1000 | 1000 | 1000 | 1300 | 1300 | 800 |
| Current - Gate Trigger Max (µA) | 500 | 200 | 15 | 200 | 20 | 5000 | 15000 | 200 |
| Voltage - On State Max (V) | 1.6 | 1.8 | 1.8 | 1.9 | 1.9 | 1.6 | 1.6 | 1.6 |
| Current - On State RMS Max (A) | 8 | 8 | 8 | 12 | 12 | 8 | 12 | 12 |
| Current - Hold Max (mA) | 8 | 6 | 30 | 6 | 40 | 25 | 40 | 5 |
| Current - Off State Max (µA) | 5 | 10 | 10 | 10 | 10 | 5 | 5 | 5 |
| SCR Type | Sensitive Gate | Sensitive Gate | Standard Recovery | Sensitive Gate | Standard Recovery | Standard Recovery | Standard Recovery | Sensitive Gate |
| Operating Temperature (°C) | -40 to 110 | -40 to 110 | -40 to 125 | -40 to 110 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Package | TO-252-3 DPAK | TO-252-3 DPAK | TO-252-3 DPAK | TO-252-3 DPAK | TO-252-3 DPAK | TO-252-3 DPAK | TO-252-3 DPAK | TO-252-3 DPAK |
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Sensitive Gate Substitutes (Preferred for Gate-Triggered Applications):
MCR8DSMT4G and MCR8DSMT4G (Littelfuse) are direct functional equivalents with identical 8A RMS current rating and Sensitive Gate characteristics. Both maintain 600V blocking voltage and TO-252 DPAK packaging. MCR8DSMT4G offers extended temperature range to 125°C. Gate trigger voltage is 1000 mV maximum versus 800 mV for the S6008DS3RP, requiring slightly higher gate drive voltage but remaining within typical gate drive circuit capabilities.
TS1220-600B (STMicroelectronics) is a Sensitive Gate 12A SCR with 800 mV gate trigger voltage matching the S6008DS3RP specification. The higher current rating (12A versus 8A) provides design margin. Extended temperature range to 125°C and Active product status support long-term availability.
Higher Current Capacity Substitutes (For Upgraded Current Handling):
MCR12DSMT4G (Littelfuse, Sensitive Gate) and MCR12DCMT4G (Littelfuse, Standard Recovery) provide 12A RMS current capacity in the same package. These are suitable when circuit design permits higher current ratings. MCR12DSMT4G maintains Sensitive Gate operation; MCR12DCMT4G uses Standard Recovery with different gate characteristics.
TN1215-600B-TR (STMicroelectronics, Standard Recovery, 12A) offers high inventory availability (22,775 pcs) and extended temperature range. Standard Recovery type requires higher gate trigger current (15 mA versus 500 µA) and higher hold current (40 mA versus 8 mA).
Standard Recovery Alternatives (For Cost-Optimized Designs):
MCR8DCMT4G (Littelfuse, 8A, Standard Recovery) and TN805-600B-TR (STMicroelectronics, 8A, Standard Recovery) maintain the 8A current rating with Standard Recovery characteristics. These parts have higher gate trigger current requirements and extended temperature ranges to 125°C. Standard Recovery SCRs are suitable for applications where gate drive circuits can supply higher trigger currents.
Product Status and Compliance:
All recommended substitutes carry Active product status, ensuring continued manufacturing and supply availability. All parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity, matching the original part's environmental qualification. REACH status varies (Unaffected or Affected) but does not affect functional substitution eligibility.
Frequently Asked Questions (FAQ)
Q: Can MCR12DSMT4G replace S6008DS3RP in a 8A circuit?
A: Yes. MCR12DSMT4G is rated for 12A RMS on-state current, which exceeds the 8A requirement. The higher current rating does not degrade performance in lower-current applications. Both are Sensitive Gate SCRs with compatible gate trigger characteristics (1000 mV maximum versus 800 mV). Verify gate drive circuit can supply up to 200 µA gate trigger current.
Q: What is the difference between Sensitive Gate and Standard Recovery SCRs?
A: Sensitive Gate SCRs (S6008DS3RP, MCR8DSMT4G, TS1220-600B) require lower gate trigger current (200–500 µA) and have lower hold current (5–8 mA), making them suitable for low-power gate drive circuits. Standard Recovery SCRs (MCR8DCMT4G, TN805-600B-TR) require higher gate trigger current (15–5000 µA) and higher hold current (25–40 mA), requiring more robust gate drive circuits but offering lower on-state voltage in some cases.
Q: Are STMicroelectronics TN series parts compatible with Littelfuse MCR series?
A: Yes, within the same voltage and current ratings. Both manufacturers produce 600V SCRs in TO-252 DPAK packaging with equivalent blocking voltage and current specifications. TN1215-600B-TR (STMicroelectronics, 12A) and MCR12DSMT4G (Littelfuse, 12A) are functionally compatible. Verify gate trigger voltage and current requirements match your gate drive circuit design.
Q: Can I use a 12A SCR in place of an 8A SCR?
A: Yes. A 12A-rated SCR (MCR12DSMT4G, TN1215-600B-TR) can replace an 8A-rated SCR (S6008DS3RP) without derating. The higher current rating provides design margin and does not affect circuit operation at 8A load current. Thermal management and PCB layout remain unchanged.
Q: What is the impact of extended temperature range (-40°C to 125°C versus -40°C to 110°C)?
A: Extended temperature range provides operational margin for high-ambient or high-power applications. MCR8DCMT4G, MCR12DCMT4G, TN805-600B-TR, TN1215-600B-TR, and TS1220-600B all operate to 125°C, supporting designs requiring higher thermal headroom. S6008DS3RP and MCR8DSMT4G are limited to 110°C.
Q: Does packaging differ between substitute parts?
A: No. All substitute parts use TO-252-3 DPAK (2 Leads + Tab) surface mount packaging. Footprint, lead spacing, and thermal tab dimensions are identical, enabling direct PCB layout compatibility without redesign.
Q: What inventory considerations apply to substitute selection?
A: TN1215-600B (Tube packaging, 103,100 pcs) and TN1215-600B-TR (Tape & Reel, 22,775 pcs) offer the highest inventory availability. MCR12DSMT4G (16,735 pcs) and MCR12DCMT4G (10,100 pcs) provide strong Littelfuse availability. S6008DS3RP (811 pcs) has limited stock, making substitutes necessary for high-volume production.
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