S6008RS3 Equivalent & Substitute Parts

Part Overview

The S6008RS3 is a Silicon Controlled Rectifier (SCR) rated for 600V off-state voltage with 8A RMS on-state current capability. Manufactured by Littelfuse, this sensitive gate thyristor is housed in a TO-220 through-hole package and is designed for applications requiring controlled rectification and switching in industrial and power electronics circuits. The S6008RS3 is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and component procurement.

Key Parameters

Parameter	Value
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)	10 µA
Current - Non Rep. Surge 50, 60Hz (Itsm)	83A, 100A
SCR Type	Sensitive Gate
Operating Temperature Range	-40°C ~ 110°C
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the S6008RS3 is based on electrical and mechanical parameter equivalence within the thyristor category. The primary substitution criteria are:

Voltage rating: 600V off-state voltage
Current rating: 8A RMS on-state current
Gate characteristics: Sensitive gate type with matching trigger voltage and current specifications
Thermal performance: Operating temperature range of -40°C to 110°C
Package compatibility: TO-220-3 through-hole configuration
Regulatory compliance: ROHS3 compliance and MSL rating

The S6008RS3TP meets all these criteria as a direct parametric equivalent, with identical electrical specifications and compatible packaging, differing only in supplier device package designation (TO-220AB vs. TO-220 Non-Isolated Tab) and product status.

Parameter Comparison

Parameter	S6008RS3	S6008RS3TP
Manufacturer	Littelfuse	Littelfuse Inc.
Voltage - Off State	600 V	600 V
Voltage - Gate Trigger (Vgt) (Max)	800 mV	800 mV
Current - Gate Trigger (Igt) (Max)	500 µA	500 µA
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V
Current - On State (It (RMS)) (Max)	8 A	8 A
Current - Hold (Ih) (Max)	8 mA	8 mA
Current - Off State (Max)	10 µA	5 µA
Current - Non Rep. Surge 50, 60Hz (Itsm)	83A, 100A	83A, 100A
SCR Type	Sensitive Gate	Sensitive Gate
Operating Temperature Range	-40°C ~ 110°C	-40°C ~ 110°C
Mounting Type	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3
Supplier Device Package	TO-220 Non-Isolated Tab	TO-220AB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics	Active

Engineering Selection Recommendations

The S6008RS3TP is a direct parametric equivalent to the S6008RS3 and is suitable for applications currently using the discontinued S6008RS3. Both parts share identical electrical specifications across all critical parameters: 600V off-state voltage, 8A RMS on-state current, sensitive gate characteristics, and operating temperature range.

The S6008RS3TP offers the advantage of active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited), meeting regulatory and environmental requirements.

The minor difference in off-state leakage current (10 µA vs. 5 µA) represents an improvement in the S6008RS3TP and does not impact functional compatibility. The supplier device package designation difference (TO-220AB vs. TO-220 Non-Isolated Tab) reflects standard industry packaging variations within the TO-220-3 form factor and does not affect electrical performance or PCB mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can the S6008RS3TP directly replace the S6008RS3 in existing designs?

A: Yes. The S6008RS3TP is a parametric equivalent with identical electrical specifications. Both parts are rated for 600V off-state voltage, 8A RMS on-state current, and share the same sensitive gate characteristics, operating temperature range, and TO-220-3 package configuration. No circuit modifications are required.

Q: What is the difference between TO-220 Non-Isolated Tab and TO-220AB packaging?

A: Both designations refer to standard TO-220-3 through-hole packages with compatible mechanical and electrical properties. The difference is in supplier nomenclature and internal tab isolation design. Both are suitable for identical PCB mounting and thermal management applications.

Q: Why is the S6008RS3 discontinued?

A: Product discontinuation at DiGi Electronics reflects supplier inventory and market decisions. The S6008RS3TP remains in active production by Littelfuse and provides equivalent functionality for all applications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the S6008RS3 and S6008RS3TP maintain ROHS3 compliance, MSL rating of 1 (Unlimited), and identical ECCN and HTSUS classifications.

Q: What is the significance of the off-state leakage current difference?

A: The S6008RS3TP exhibits lower off-state leakage current (5 µA vs. 10 µA). This represents improved performance and does not affect compatibility. Lower leakage current is beneficial for applications sensitive to standby power consumption.

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