S6008DS3TP Equivalent & Substitute Parts

Part Overview

The S6008DS3TP is a 600V 8A Sensitive Gate SCR (Silicon Controlled Rectifier) manufactured by Littelfuse Inc., packaged in TO-252 (DPAK) surface mount configuration. This thyristor is designed for applications requiring controlled rectification and switching at moderate current levels with sensitive gate triggering characteristics. The part is currently active in production with 734 units in stock. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational characteristics within the 600V voltage class and 8A current rating range.

Key Parameters

Parameter	S6008DS3TP	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	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution for the S6008DS3TP is determined by the following critical parameters:

Voltage Class: All substitutes must maintain 600V off-state voltage rating to ensure compatibility in the same circuit topology.

Current Rating: The 8A RMS current rating defines the thermal and switching capability envelope. Substitutes at 8A maintain direct functional equivalence. Parts rated at 12A or 15A provide higher current capacity and are suitable where circuit design permits increased current handling.

SCR Type: The S6008DS3TP is a Sensitive Gate device, characterized by lower gate trigger voltage (800 mV max) and higher gate trigger current (500 µA max). Sensitive Gate substitutes (MCR8DSMT4G, MCR12DSMT4G, TS1220-600B) maintain these triggering characteristics. Standard Recovery SCR types (MCR8DCMT4G, TN805-600B-TR, TN1215-600B, TN1515-600B-TR) feature higher gate trigger thresholds and are functionally compatible but require different gate drive circuit design.

Package Compatibility: All listed substitutes use TO-252-3 DPAK surface mount packaging with identical pinout and thermal characteristics, enabling direct PCB replacement.

Operating Temperature: The S6008DS3TP operates from -40°C to 110°C. Substitutes with extended range (-40°C to 125°C) provide broader environmental capability without functional compromise.

Parameter Comparison

Parameter	S6008DS3TP	MCR8DSMT4G	MCR8DCMT4G	MCR12DSMT4G	MCR12DCMT4G	TN805-600B-TR	TN1215-600B	TN1215-600B-TR	TN1515-600B-TR	TS1220-600B	TN1205T-600B-TR	Unit
Voltage - Off State	600	600	600	600	600	600	600	600	600	600	600	V
Voltage - Gate Trigger (Vgt) Max	800	1000	1000	1000	1000	1300	1300	1300	1300	800	1300	mV
Current - Gate Trigger (Igt) Max	500	200	15	200	20	5	15	15	15	200	5	µA
Voltage - On State (Vtm) Max	1.6	1.8	1.8	1.9	1.9	1.6	1.6	1.6	1.6	1.6	1.6	V
Current - On State (It RMS) Max	8	8	8	12	12	8	12	12	15	12	12	A
Current - Hold (Ih) Max	8	6	30	6	40	25	40	40	40	5	15	mA
Current - Off State Max	5	10	10	10	10	5	5	5	5	5	5	µA
SCR Type	Sensitive Gate	Sensitive Gate	Standard Recovery	Sensitive Gate	Standard Recovery	Standard Recovery	Standard Recovery	Standard Recovery	Standard Recovery	Sensitive Gate	Standard Recovery	—
Operating Temperature Range	-40 to 110	-40 to 110	-40 to 125	-40 to 110	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	°C
Package / Case	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	TO-252-3 DPAK	TO-252-3 DPAK	TO-252-3 DPAK	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

Direct Functional Equivalents (Sensitive Gate, 8A Rating):

MCR8DSMT4G and MCR8DSMT4G are Littelfuse Sensitive Gate SCRs with 8A RMS current rating and 600V voltage class. Both maintain gate trigger characteristics compatible with S6008DS3TP gate drive circuits. MCR8DSMT4G extends operating temperature to 125°C. Both are ROHS3 compliant and available in high inventory quantities (9,458 units).

Sensitive Gate Substitutes with Increased Current Capacity:

MCR12DSMT4G provides 12A RMS current rating while maintaining Sensitive Gate characteristics and 600V voltage class. This part accommodates higher load currents within the same gate drive architecture. Operating temperature extends to 110°C with 16,735 units in stock.

TS1220-600B is an STMicroelectronics Sensitive Gate SCR rated 12A RMS at 600V with gate trigger voltage of 800 mV, matching the S6008DS3TP specification. Operating temperature range extends to 125°C. Inventory is 2,380 units.

Standard Recovery Substitutes (8A Rating):

MCR8DCMT4G and TN805-600B-TR are Standard Recovery SCRs with 8A RMS current rating and 600V voltage class. These parts feature higher gate trigger thresholds (1.0V and 1.3V respectively) and require modified gate drive circuits. Both support extended operating temperature to 125°C. MCR8DCMT4G inventory is 10,400 units; TN805-600B-TR inventory is 3,984 units.

Standard Recovery Substitutes with Increased Current Capacity:

TN1215-600B and TN1215-600B-TR are STMicroelectronics Standard Recovery SCRs rated 12A RMS at 600V with 1.3V gate trigger voltage. Both support -40°C to 125°C operating range. TN1215-600B (Tube packaging) has 103,100 units in stock; TN1215-600B-TR (Tape & Reel) has 22,775 units.

MCR12DCMT4G is a Littelfuse Standard Recovery SCR rated 12A RMS at 600V. Operating temperature extends to 125°C with 10,100 units available.

TN1515-600B-TR is an STMicroelectronics Standard Recovery SCR rated 15A RMS at 600V, providing the highest current capacity among listed substitutes. Operating temperature range is -40°C to 125°C with 11,247 units in stock.

TN1205T-600B-TR is an STMicroelectronics Standard Recovery SCR rated 12A RMS at 600V with Cut Tape & Digi-Reel packaging. Operating temperature extends to 125°C with 2,100 units available.

All substitute parts maintain ROHS3 compliance and identical TO-252-3 DPAK package geometry, enabling direct PCB replacement without layout modification.

Frequently Asked Questions (FAQ)

Q: Can MCR8DCMT4G replace S6008DS3TP directly?

A: MCR8DCMT4G is electrically compatible in terms of voltage and current ratings, both rated 600V and 8A RMS. However, MCR8DCMT4G is a Standard Recovery SCR with 1.0V gate trigger voltage, compared to S6008DS3TP's 800 mV Sensitive Gate specification. Gate drive circuits designed for the lower trigger voltage of S6008DS3TP may require adjustment for MCR8DCMT4G. Package compatibility is identical (TO-252-3 DPAK).

Q: What is the difference between Sensitive Gate and Standard Recovery SCRs?

A: Sensitive Gate SCRs (S6008DS3TP, MCR8DSMT4G, MCR12DSMT4G, TS1220-600B) feature lower gate trigger voltage (typically 800 mV to 1.0V) and higher gate trigger current (200–500 µA), enabling triggering with lower power gate drive circuits. Standard Recovery SCRs (MCR8DCMT4G, TN805-600B-TR, TN1215-600B, TN1515-600B-TR) require higher gate trigger voltage (1.3V) and lower gate trigger current (5–15 µA), necessitating different gate drive design. Both types are functionally equivalent for rectification and switching applications when gate drive circuits are appropriately designed.

Q: Can I use a 12A rated SCR in place of an 8A rated part?

A: Yes. MCR12DSMT4G, MCR12DCMT4G, TN1215-600B, TN1215-600B-TR, TN1205T-600B-TR, and TN1515-600B-TR all provide higher current capacity than the 8A rating of S6008DS3TP. These parts are suitable for applications where circuit design permits increased current handling. Thermal management and PCB layout remain unchanged due to identical TO-252-3 DPAK packaging.

Q: Are all substitutes available in the same packaging?

A: All listed substitutes use TO-252-3 DPAK surface mount packaging with identical pinout and thermal characteristics. Packaging variants differ in distribution format: Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel. These distribution formats do not affect electrical performance or PCB compatibility.

Q: What is the operating temperature difference between S6008DS3TP and its substitutes?

A: S6008DS3TP operates from -40°C to 110°C. Most substitutes extend the upper temperature limit to 125°C, providing broader environmental capability. This extended range does not affect performance in applications operating within the S6008DS3TP temperature envelope.

Q: Which substitute offers the best inventory availability?

A: TN1215-600B (STMicroelectronics, Tube packaging) has the highest inventory at 103,100 units. TN1215-600B-TR (Tape & Reel variant) has 22,775 units. MCR12DSMT4G (Littelfuse, Sensitive Gate) has 16,735 units. All three are Standard Recovery or Sensitive Gate 12A rated SCRs at 600V.

Q: Can I use TN1515-600B-TR in a circuit designed for 8A operation?

A: Yes. TN1515-600B-TR is rated 15A RMS at 600V and is electrically compatible with S6008DS3TP in terms of voltage class and switching characteristics. The higher current rating does not degrade performance in lower-current applications. All other electrical parameters (gate trigger voltage, on-state voltage, hold current) remain within acceptable ranges for 8A circuit operation.

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