S8008VTP Equivalent & Substitute Parts

Part Overview

The S8008VTP is an 800V, 8A standard recovery SCR (silicon-controlled rectifier) manufactured by Littelfuse Inc., housed in a TO-251 through-hole package. This thyristor is designed for applications requiring controlled rectification and switching at moderate current levels with standard gate sensitivity characteristics. The part maintains active product status with 909 units in current inventory.

Substitute parts are identified when equivalent electrical performance can be achieved within the allowed parameter tolerances for this thyristor category, accounting for differences in mounting technology, gate sensitivity, and current ratings that do not compromise circuit functionality.

Substiute Parts

S8008VTP

Littelfuse Inc.In Stock: 948S8008VTP Datasheet

Current PartRFQ

MCR12DSN-1G

Littelfuse Inc.In Stock: 2816MCR12DSN-1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The MCR12DSN-1G qualifies as a substitute based on the following allowed parameter criteria:

Matching Parameters:

• Off-state voltage: 800V (identical)
• Off-state leakage current: 10µA maximum (identical)
• RoHS3 compliance and REACH unaffected status (identical)
• Manufacturer: Littelfuse Inc. (same source)

Allowable Variations:

• Gate trigger voltage (Vgt): 1.0V vs. 1.5V maximum—lower value indicates improved gate sensitivity, acceptable for standard recovery applications
• Gate trigger current (Igt): 200µA vs. 15mA maximum—represents sensitive gate technology, functionally compatible
• On-state voltage (Vtm): 1.9V vs. 1.6V maximum—within acceptable range for thyristor substitution
• Current rating (It RMS): 12A vs. 8A—higher rating provides design margin
• Hold current (Ih): 6mA vs. 30mA maximum—lower value acceptable
• Mounting: Surface mount (TO-252 DPAK) vs. through-hole (TO-251)—requires PCB redesign consideration
• Operating temperature upper limit: 110°C vs. 125°C—acceptable for most applications

Parameter Comparison

Engineering Selection Recommendations

S8008VTP Selection Criteria:

• Through-hole mounting requirement for existing PCB designs
• Standard gate sensitivity acceptable for application
• Operating temperature requirement up to 125°C
• Active product status with established supply chain (909 units in stock)

MCR12DSN-1G Selection Criteria:

• Surface-mount PCB design with DPAK footprint capability
• Sensitive gate technology reduces gate drive requirements
• Higher current rating (12A) provides additional design margin
• Active product status with larger inventory (2766 units in stock)
• Operating temperature limited to 110°C maximum

Both parts maintain identical off-state voltage (800V), off-state leakage current (10µA), and regulatory compliance (ROHS3, REACH unaffected). Selection depends on mounting technology compatibility and thermal operating range requirements.

Frequently Asked Questions (FAQ)

Q: Can MCR12DSN-1G replace S8008VTP in an existing through-hole design?

A: No. MCR12DSN-1G uses surface-mount TO-252 (DPAK) packaging, while S8008VTP uses through-hole TO-251 packaging. PCB redesign is required for substitution.

Q: What is the difference between standard recovery and sensitive gate SCRs?

A: Sensitive gate SCRs (MCR12DSN-1G) require lower gate trigger voltage (1.0V vs. 1.5V) and current (0.2mA vs. 15mA) for activation. This reduces gate drive circuit complexity but does not affect off-state blocking voltage or leakage current.

Q: Is the higher current rating of MCR12DSN-1G (12A vs. 8A) a concern?

A: No. Higher current rating provides design margin and does not create compatibility issues. The part will operate safely at 8A or lower.

Q: What is the impact of the 15°C lower maximum operating temperature on MCR12DSN-1G?

A: MCR12DSN-1G is rated to 110°C maximum versus 125°C for S8008VTP. Applications requiring sustained operation above 110°C must use S8008VTP.

Q: Are both parts from the same manufacturer?

A: Yes. Both S8008VTP and MCR12DSN-1G are manufactured by Littelfuse Inc., ensuring consistent quality and reliability standards.

Q: What does ROHS3 compliance mean for these parts?

A: ROHS3 compliance indicates the parts meet Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials in electronic equipment.