S6008VS2TP Equivalent & Substitute Parts

Part Overview

The S6008VS2TP is a 600V 8A Sensitive Gate SCR (Silicon Controlled Rectifier) manufactured by Littelfuse Inc., packaged in TO-251 (V-Pak/I-Pak) through-hole configuration. This thyristor is classified as Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance can be maintained within the allowed parameter tolerances for this thyristor category, considering voltage rating, current capacity, gate sensitivity, and thermal characteristics.

Key Parameters

Parameter	S6008VS2TP
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)	8 A
Current - Hold (Ih) (Max)	6 mA
Current - Off State (Max)	5 µA
SCR Type	Sensitive Gate
Operating Temperature	-40°C ~ 110°C
Mounting Type	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the S6008VS2TP is determined by the following criteria:

Primary Substitution Parameters:

Voltage - Off State: 600 V (exact match required)
SCR Type: Sensitive Gate (gate sensitivity characteristics must align)
Mounting Type: Through Hole (mechanical compatibility)
Package / Case: TO-251-3 Short Leads, IPak, TO-251AA (pin configuration and footprint)

Secondary Substitution Parameters:

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): ≥ 8 A (minimum current capacity)
Operating Temperature: ≥ -40°C to ≤ 110°C

Substitute parts are grouped into two categories:

Category 1: Direct Parametric Equivalents (Through-Hole, Sensitive Gate, 600V)

S6004VS2TP: Lower current rating (4A RMS) but identical gate characteristics and voltage ratings
S6010VS2TP: Higher current rating (10A RMS) with identical gate characteristics and voltage ratings
TS820-600H: Identical current rating (8A RMS) with matching gate characteristics and extended temperature range

Category 2: Manufacturer-Recommended Alternative (Surface Mount)

MCR708A1G: Different mounting type (Surface Mount, TO-252 DPAK) and lower current rating (4A RMS); substitution requires PCB redesign

Category 3: Standard Recovery Type (Different Gate Characteristics)

TN1215-600H: Standard Recovery SCR type with higher current rating (12A RMS) but different gate trigger specifications; substitution requires circuit validation

Category 4: Higher Current Capacity (Sensitive Gate)

TS1220-600H: Higher current rating (12A RMS) with matching gate characteristics and extended temperature range

Parameter Comparison

Parameter	S6008VS2TP	S6004VS2TP	S6010VS2TP	TS820-600H	TS1220-600H	TN1215-600H	MCR708A1G
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	STMicroelectronics	STMicroelectronics	STMicroelectronics	Littelfuse Inc.
Voltage - Off State	600 V	600 V	600 V	600 V	600 V	600 V	600 V
Voltage - Gate Trigger (Vgt) (Max)	800 mV	800 mV	800 mV	800 mV	800 mV	1.3 V	800 mV
Current - Gate Trigger (Igt) (Max)	200 µA	200 µA	200 µA	200 µA	200 µA	15 mA	75 µA
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V	1.6 V	1.6 V	1.6 V	1.6 V	2.2 V
Current - On State (It (RMS)) (Max)	8 A	4 A	10 A	8 A	12 A	12 A	4 A
Current - Hold (Ih) (Max)	6 mA	6 mA	6 mA	5 mA	5 mA	40 mA	5 mA
Current - Off State (Max)	5 µA	2 µA	5 µA	5 µA	5 µA	5 µA	10 µA
SCR Type	Sensitive Gate	Sensitive Gate	Sensitive Gate	Sensitive Gate	Sensitive Gate	Standard Recovery	Sensitive Gate
Operating Temperature	-40°C ~ 110°C	-40°C ~ 110°C	-40°C ~ 110°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 110°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Surface Mount
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	TO-252-3, DPAK (2 Leads + Tab), SC-63
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (No Circuit Modification Required):

S6004VS2TP and S6010VS2TP maintain identical gate trigger specifications (800 mV, 200 µA) and on-state voltage (1.6 V) as the S6008VS2TP. Both are Littelfuse Inc. products with ROHS3 compliance and through-hole TO-251 packaging. S6004VS2TP is suitable for applications requiring lower current capacity (4A RMS); S6010VS2TP is suitable for applications requiring higher current capacity (10A RMS). Both operate within the -40°C to 110°C temperature range.

TS820-600H (STMicroelectronics) provides identical current rating (8A RMS) and gate characteristics (800 mV, 200 µA) with extended operating temperature range (-40°C to 125°C). Through-hole TO-251 packaging is compatible. ROHS3 compliance is confirmed.

Conditional Substitutes (Circuit Validation Required):

TS1220-600H (STMicroelectronics) offers higher current capacity (12A RMS) with matching gate characteristics (800 mV, 200 µA) and extended temperature range (-40°C to 125°C). Through-hole TO-251 packaging is compatible. ROHS3 compliance is confirmed. Substitution is valid for applications where higher current capacity is acceptable.

TN1215-600H (STMicroelectronics) is a Standard Recovery SCR with higher current rating (12A RMS) but significantly different gate trigger specifications (1.3 V, 15 mA). This represents a different SCR type classification. Substitution requires circuit validation to confirm gate drive circuit compatibility. Extended operating temperature range (-40°C to 125°C) and ROHS3 compliance are confirmed.

Not Recommended for Direct Substitution:

MCR708A1G (Littelfuse Inc.) requires PCB redesign due to Surface Mount TO-252 DPAK packaging, which is mechanically incompatible with through-hole TO-251 applications. Lower current rating (4A RMS) and higher on-state voltage (2.2 V) further limit substitution applicability.

Frequently Asked Questions (FAQ)

Q: Can S6004VS2TP replace S6008VS2TP in my circuit?

A: S6004VS2TP is a direct parametric equivalent with identical gate trigger specifications (800 mV, 200 µA) and on-state voltage (1.6 V). However, its current rating is 4A RMS compared to 8A RMS for S6008VS2TP. Substitution is valid only if your circuit current requirements do not exceed 4A RMS. Both parts use identical TO-251 through-hole packaging and operate within -40°C to 110°C.

Q: What is the difference between S6008VS2TP and TS820-600H?

A: Both parts are Sensitive Gate SCRs with 600V off-state voltage, 8A RMS current rating, and identical gate trigger specifications (800 mV, 200 µA). The primary difference is manufacturer (Littelfuse vs. STMicroelectronics) and operating temperature range (S6008VS2TP: -40°C to 110°C; TS820-600H: -40°C to 125°C). Both use TO-251 through-hole packaging and are ROHS3 compliant. TS820-600H is suitable for applications requiring extended high-temperature operation.

Q: Why is TN1215-600H listed as a substitute if it has different gate specifications?

A: TN1215-600H is classified as a Standard Recovery SCR type with different gate trigger specifications (1.3 V, 15 mA) compared to the Sensitive Gate S6008VS2TP (800 mV, 200 µA). While both maintain 600V off-state voltage and TO-251 through-hole packaging, the gate drive requirements differ significantly. Substitution is valid only after circuit validation confirms that the gate drive circuit can supply the higher trigger voltage and current. This part offers higher current capacity (12A RMS) and extended temperature range (-40°C to 125°C).

Q: Can I use MCR708A1G as a substitute?

A: MCR708A1G is not recommended for direct substitution. Although it is a Littelfuse Inc. Sensitive Gate SCR with 600V rating and ROHS3 compliance, it uses Surface Mount TO-252 DPAK packaging, which is mechanically incompatible with through-hole TO-251 applications. Additionally, its current rating (4A RMS) and on-state voltage (2.2 V) differ from S6008VS2TP specifications. Substitution would require complete PCB redesign.

Q: What does "Sensitive Gate" mean, and why does it matter for substitution?

A: Sensitive Gate SCRs require lower gate trigger voltage (typically 800 mV) and current (typically 200 µA) to turn on compared to Standard Recovery SCRs. This characteristic affects gate drive circuit design. When substituting between Sensitive Gate and Standard Recovery types (such as TN1215-600H), the gate drive circuit must be validated to confirm it can supply the required trigger specifications. Substitution between parts of the same gate type (Sensitive Gate to Sensitive Gate) is more straightforward.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (S6004VS2TP, S6010VS2TP, TS820-600H, TS1220-600H, TN1215-600H, and MCR708A1G) are ROHS3 compliant, matching the compliance status of the S6008VS2TP.

Q: What is the difference between current ratings It (AV) and It (RMS)?

A: It (AV) represents average on-state current, while It (RMS) represents RMS (root mean square) on-state current. For substitution purposes, the It (RMS) rating is the primary specification used to determine whether a part can handle the circuit's current requirements. All substitute parts maintain or exceed the 8A RMS rating of S6008VS2TP, except S6004VS2TP and MCR708A1G, which are rated at 4A RMS.

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