VS-25TTS12SPBF SCR 1.2kV 25A Thyristor Equivalent & Substitute Parts

Part Overview

The VS-25TTS12SPBF is a 1.2 kV, 25 A standard recovery SCR (silicon-controlled rectifier) in TO-263AB (D2PAK) surface mount packaging manufactured by Vishay General Semiconductor - Diodes Division. This thyristor is designed for high-voltage switching applications requiring reliable gate-triggered control. The part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. Direct functional equivalents are available from the same manufacturer with identical electrical specifications and packaging.

Key Parameters

Parameter	Value
Voltage - Off State	1.2 kV
Voltage - Gate Trigger (Vgt) Max	2 V
Current - Gate Trigger (Igt) Max	45 mA
Voltage - On State (Vtm) Max	1.25 V
Current - On State (It RMS) Max	25 A
Current - Hold (Ih) Max	150 mA
Current - Non Rep. Surge (Itsm) @ 50Hz	350 A
SCR Type	Standard Recovery
Operating Temperature Range	-40°C to 125°C
Package / Case	TO-263-3, D2PAK (2 Leads + Tab)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the VS-25TTS12SPBF is determined by strict equivalence across the following critical parameters:

Voltage Rating: Off-state voltage of 1.2 kV
Current Rating: RMS on-state current of 25 A and surge current (Itsm) of 350 A @ 50Hz
Gate Characteristics: Gate trigger voltage (Vgt) maximum of 2 V and gate trigger current (Igt) maximum of 45 mA
On-State Performance: Forward voltage drop (Vtm) maximum of 1.25 V
Hold Current: Maximum hold current of 150 mA
Package: TO-263-3 D2PAK surface mount configuration
Device Type: Standard recovery SCR
Temperature Range: -40°C to 125°C operating window
Compliance: ROHS3 compliance and MSL 1 rating

All substitute parts maintain identical electrical specifications and physical packaging, differing only in packaging format (tube versus tape & reel) and product availability status.

Parameter Comparison

Parameter	VS-25TTS12SPBF	VS-25TTS12S-M3	VS-25TTS12STRL-M3	VS-25TTS12STRR-M3
Voltage - Off State	1.2 kV	1.2 kV	1.2 kV	1.2 kV
Voltage - Gate Trigger (Vgt) Max	2 V	2 V	2 V	2 V
Current - Gate Trigger (Igt) Max	45 mA	45 mA	45 mA	45 mA
Voltage - On State (Vtm) Max	1.25 V	1.25 V	1.25 V	1.25 V
Current - On State (It RMS) Max	25 A	25 A	25 A	25 A
Current - Hold (Ih) Max	150 mA	150 mA	150 mA	150 mA
Current - Non Rep. Surge (Itsm) @ 50Hz	350 A	350 A	350 A	350 A
SCR Type	Standard Recovery	Standard Recovery	Standard Recovery	Standard Recovery
Operating Temperature Range	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued	Active	Active	Active
Packaging Format	Tube	Tube	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

All three substitute parts—VS-25TTS12S-M3, VS-25TTS12STRL-M3, and VS-25TTS12STRR-M3—are direct electrical and mechanical equivalents to the discontinued VS-25TTS12SPBF. Selection among these substitutes is based on packaging format and product availability:

VS-25TTS12S-M3 is supplied in tube packaging and maintains active product status with 3,615 units in stock. This option is suitable for applications requiring tube-packaged components.

VS-25TTS12STRL-M3 and VS-25TTS12STRR-M3 are both supplied in tape & reel format and maintain active product status. VS-25TTS12STRL-M3 has 8,962 units in stock, while VS-25TTS12STRR-M3 has 880 units in stock. Tape & reel packaging is standard for high-volume automated assembly processes.

All substitute parts carry ROHS3 compliance and MSL 1 rating, matching the original part's environmental and regulatory certifications. Selection should be based on production volume requirements and existing assembly line packaging specifications.

Frequently Asked Questions (FAQ)

Q: Can VS-25TTS12S-M3, VS-25TTS12STRL-M3, and VS-25TTS12STRR-M3 be used interchangeably with VS-25TTS12SPBF?

A: Yes. All three substitute parts are parametrically equivalent to the VS-25TTS12SPBF across all critical electrical specifications including voltage rating, current ratings, gate characteristics, and on-state performance. They share identical TO-263AB D2PAK surface mount packaging and operating temperature range. Substitution is direct without circuit modification.

Q: What is the difference between the three substitute parts?

A: The three substitutes differ only in packaging format and inventory availability. VS-25TTS12S-M3 is supplied in tube packaging. VS-25TTS12STRL-M3 and VS-25TTS12STRR-M3 are supplied in tape & reel format. All three maintain identical electrical performance and physical package dimensions.

Q: Why is the original VS-25TTS12SPBF discontinued?

A: The VS-25TTS12SPBF is discontinued at DiGi Electronics. However, functionally equivalent parts from the same manufacturer remain in active production and are readily available.

Q: Are there any compliance or certification differences between the main part and substitutes?

A: No. All parts maintain ROHS3 compliance, MSL 1 rating, REACH unaffected status, and identical ECCN and HTSUS classifications.

Q: Which substitute should I select for high-volume production?

A: For high-volume automated assembly, tape & reel packaging (VS-25TTS12STRL-M3 or VS-25TTS12STRR-M3) is standard. VS-25TTS12STRL-M3 offers higher inventory availability with 8,962 units in stock.

Q: Can these parts be used in applications requiring the full -40°C to 125°C temperature range?

A: Yes. All substitute parts are rated for the complete -40°C to 125°C operating temperature range, matching the original part specification.

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