S4012RTP Equivalent & Substitute Parts

Part Overview

The S4012RTP is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse Inc., rated for 400V off-state voltage with 12A RMS on-state current in a TO-220-3 through-hole package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for thyristor applications.

Substiute Parts

S4012RTP

Littelfuse Inc.In Stock: 2316S4012RTP Datasheet

Current PartRFQ

2N6507G

Littelfuse Inc.In Stock: 127982N6507G Datasheet

MFR RecommendedRFQ

2N6507TG

Littelfuse Inc.In Stock: 24002N6507TG Datasheet

MFR RecommendedRFQ

TYN612RG

STMicroelectronicsIn Stock: 4921TYN612RG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S4012RTP is determined by the following criteria:

Voltage Rating Compatibility: Off-state voltage must be equal to or greater than 400V to maintain blocking capability in the application circuit.

Current Rating Compatibility: On-state RMS current rating must be equal to or greater than 12A to handle the specified load without thermal stress.

Gate Trigger Parameters: Gate trigger voltage (Vgt) and gate trigger current (Igt) must remain within acceptable ranges to ensure reliable gate control with existing drive circuitry.

On-State Voltage: Forward voltage drop (Vtm) characteristics must be compatible with circuit design margins.

Package and Mounting: Through-hole TO-220-3 package configuration must be maintained for mechanical and thermal interface compatibility.

SCR Type: Standard Recovery classification ensures consistent switching behavior.

Compliance Status: All substitute parts must maintain ROHS3 compliance and Active product status.

Parameter Comparison

Engineering Selection Recommendations

2N6507G and 2N6507TG: Both parts are manufactured by Littelfuse Inc. and share identical electrical specifications with the S4012RTP at the 400V voltage class. These parts exceed the 12A RMS current requirement with a 25A rating, providing additional thermal margin. Gate trigger parameters remain compatible. Both maintain Active product status and ROHS3 compliance. The primary distinction between these two substitutes is packaging format (Box vs. Tube) and inventory availability.

TYN612RG: This STMicroelectronics part operates at 600V off-state voltage, exceeding the 400V requirement of the S4012RTP. The 12A RMS current rating matches the main part exactly. Gate trigger voltage is lower (1.3V vs. 1.5V), and off-state leakage current is reduced (5µA vs. 10µA). This part maintains Active product status and ROHS3 compliance. The elevated voltage rating provides additional blocking margin for applications with voltage transient considerations.

Frequently Asked Questions (FAQ)

Q: Can 2N6507G or 2N6507TG be used as direct replacements for S4012RTP?

A: Yes. Both parts maintain 400V off-state voltage matching and exceed the 12A RMS current requirement. Gate trigger parameters and on-state voltage characteristics remain within compatible ranges. TO-220-3 package configuration is identical. Both are Active status and ROHS3 compliant.

Q: What is the advantage of using TYN612RG as a substitute?

A: TYN612RG provides 600V off-state voltage rating compared to the 400V of S4012RTP, offering increased blocking capability for circuits subject to voltage transients. Current rating matches at 12A RMS. Lower gate trigger current requirement (15mA vs. 20mA) may reduce drive circuit loading.

Q: Are there any limitations when substituting with higher current-rated parts like 2N6507G?

A: No electrical limitations exist. Higher current ratings provide thermal margin without affecting circuit operation. Package dimensions and pin configuration remain identical in TO-220-3 format.

Q: Does voltage rating affect substitution compatibility?

A: Higher voltage ratings are acceptable substitutes. TYN612RG at 600V can replace a 400V application. Lower voltage ratings are not acceptable as they cannot maintain required blocking voltage.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use TO-220-3 through-hole package configuration, maintaining mechanical and thermal interface compatibility with S4012RTP.

Q: What compliance certifications apply to all parts in this substitution group?

A: All parts maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity level, and REACH Unaffected status. ECCN classification is EAR99 for all parts.