S8012DTP SCR 800V 12A TO-252 Equivalent & Substitute Parts

Part Overview

The S8012DTP is a silicon-controlled rectifier (SCR) manufactured by Littelfuse Inc., rated for 800V off-state voltage and 12A RMS on-state current in a surface mount TO-252 (DPAK) package. This thyristor is classified as Standard Recovery type and is currently in active production status. The part is supplied in tube packaging and maintains full RoHS3 compliance with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements permit component interchangeability based on electrical performance parameters, package compatibility, and operational specifications. Substitutes may be necessary due to inventory availability, supply chain considerations, or design flexibility within specified parameter ranges.

Substiute Parts

S8012DTP

Littelfuse Inc.In Stock: 891S8012DTP Datasheet

Current PartRFQ

MCR12DCNT4G

Littelfuse Inc.In Stock: 10281MCR12DCNT4G Datasheet

MFR RecommendedRFQ

MCR12DSNT4G

Littelfuse Inc.In Stock: 27710MCR12DSNT4G Datasheet

MFR RecommendedRFQ

TN815-800B-TR

STMicroelectronicsIn Stock: 2768TN815-800B-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S8012DTP is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Voltage - Off State: 800V (exact match required)
• Current - On State (It RMS): 12A minimum
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63 (exact match required)
• Mounting Type: Surface Mount (exact match required)
• RoHS Status: ROHS3 Compliant (maintained)

Allowable Parameter Variation:

• Voltage - Gate Trigger (Vgt) Max: up to 1.5V
• Current - Gate Trigger (Igt) Max: up to 20mA
• Voltage - On State (Vtm) Max: up to 1.9V
• Current - Hold (Ih) Max: up to 40mA
• SCR Type: Standard Recovery or Sensitive Gate variants
• Operating Temperature Range: -40°C minimum, 110°C to 125°C maximum

Substitute parts MCR12DCNT4G and MCR12DSNT4G are manufactured by Littelfuse Inc. and maintain identical voltage and current ratings with compatible electrical characteristics. The TN815-800B-TR from STMicroelectronics provides an alternative with reduced on-state current rating (8A RMS) and is suitable only where design margins permit lower current capacity.

Parameter Comparison

Engineering Selection Recommendations

MCR12DCNT4G (Littelfuse Inc.) — Direct equivalent with identical voltage and current ratings. Maintains Standard Recovery SCR type classification. Operating temperature range extends to 125°C. Gate trigger voltage is lower (1.0V max vs. 1.5V max), providing improved gate sensitivity. Supplied in Tape & Reel packaging. All compliance certifications match the primary part.

MCR12DSNT4G (Littelfuse Inc.) — Functionally equivalent with identical voltage and current ratings. Classified as Sensitive Gate SCR type, featuring significantly reduced gate trigger current (0.2mA max vs. 20mA max) and hold current (6mA max vs. 40mA max). Operating temperature range is -40°C to 110°C. Supplied in Tape & Reel packaging. All compliance certifications match the primary part. Selection of this variant requires confirmation that the reduced hold current specification is compatible with circuit design requirements.

TN815-800B-TR (STMicroelectronics) — Alternative source with reduced on-state current rating (8A RMS vs. 12A RMS). Maintains 800V off-state voltage and Standard Recovery SCR type. Operating temperature range extends to 125°C. Gate trigger voltage (1.3V max) and current (15mA max) fall within acceptable ranges. Supplied in Cut Tape and Digi-Reel packaging. All compliance certifications match the primary part. This substitute is suitable only where circuit design permits operation at 8A RMS maximum current.

Frequently Asked Questions (FAQ)

Q: Can MCR12DCNT4G be used as a direct replacement for S8012DTP?

A: Yes. Both parts share identical 800V off-state voltage, 12A RMS on-state current, and TO-252 DPAK package specifications. The MCR12DCNT4G features lower gate trigger voltage (1.0V max), which represents improved gate sensitivity. Both are Standard Recovery SCR types with matching operating temperature ranges and compliance certifications.

Q: What is the difference between MCR12DCNT4G and MCR12DSNT4G?

A: Both maintain identical voltage and current ratings. The primary difference is SCR type classification: MCR12DCNT4G is Standard Recovery, while MCR12DSNT4G is Sensitive Gate. The Sensitive Gate variant features significantly reduced gate trigger current (0.2mA max vs. 20mA max) and hold current (6mA max vs. 40mA max). Selection depends on circuit gate drive requirements and hold current specifications.

Q: Is TN815-800B-TR a suitable substitute?

A: TN815-800B-TR is suitable only where design specifications permit reduced on-state current capacity. This part is rated for 8A RMS maximum, compared to 12A RMS for the S8012DTP. The 800V off-state voltage, TO-252 DPAK package, and Standard Recovery type are compatible. Confirm that circuit current requirements do not exceed 8A RMS before selection.

Q: Are all substitute parts available in the same packaging format?

A: No. The S8012DTP is supplied in tube packaging. MCR12DCNT4G and MCR12DSNT4G are supplied in Tape & Reel (TR) format. TN815-800B-TR is supplied in Cut Tape (CT) and Digi-Reel® format. Packaging format selection depends on assembly process requirements and order quantity considerations.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All listed substitute parts—MCR12DCNT4G, MCR12DSNT4G, and TN815-800B-TR—are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1), matching the compliance status of the S8012DTP.

Q: What is the operating temperature range for each substitute?

A: S8012DTP, MCR12DCNT4G, and TN815-800B-TR all operate from -40°C to 125°C. MCR12DSNT4G operates from -40°C to 110°C. Confirm that the reduced upper temperature limit of the Sensitive Gate variant is acceptable for your application before selection.