KSC2335R Equivalent & Substitute Parts

Part Overview

The KSC2335R is an NPN bipolar junction transistor manufactured by onsemi, rated for 400 V collector-emitter breakdown voltage and 7 A maximum collector current in a TO-220-3 through-hole package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and production continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and performance variations.

Substiute Parts

KSC2335R

onsemiIn Stock: 888KSC2335R Datasheet

Current PartRFQ

BUJ105A,127

WeEn SemiconductorsIn Stock: 835BUJ105A,127 Datasheet

SimilarRFQ

ST13007

STMicroelectronicsIn Stock: 1296ST13007 Datasheet

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ST13007D

STMicroelectronicsIn Stock: 680301ST13007D Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSC2335R is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Transistor type must be NPN
• Voltage - Collector Emitter Breakdown rating must be ≥ 400 V
• Current - Collector (Ic) maximum rating must be ≥ 7 A
• Operating temperature must support 150°C (TJ)

Mechanical Compatibility Requirements:

• Mounting type must be Through Hole
• Package must be TO-220 variant (TO-220-3, TO-220AB, or TO-220)

The substitute parts identified (BUJ105A,127; ST13007; ST13007D) satisfy these criteria with enhanced current ratings (8 A) and significantly higher power dissipation capabilities (80 W), providing design margin for the original 1.5 W specification. All substitutes maintain the 400 V breakdown voltage and 150°C operating temperature of the original part.

Parameter Comparison

Engineering Selection Recommendations

ST13007D (STMicroelectronics) is the primary substitute for the KSC2335R. This part is active in production with extensive inventory availability (680,200 pcs), ROHS3 compliance, and REACH unaffected status. The TO-220 package is mechanically compatible with TO-220-3 footprints. The 8 A current rating and 80 W power dissipation provide operational margin above the original 7 A and 1.5 W specifications.

ST13007 (STMicroelectronics) serves as an alternative active substitute with similar electrical ratings and ROHS3 compliance. Inventory availability is lower (1,218 pcs) compared to ST13007D.

BUJ105A,127 (WeEn Semiconductors) is an active substitute with equivalent electrical specifications and RoHS compliance. The TO-220AB package variant maintains mechanical compatibility. Inventory availability is 743 pcs.

All three substitutes support the original design requirements with enhanced performance margins and active product status, ensuring long-term supply chain viability.

Frequently Asked Questions (FAQ)

Q: Can the ST13007D directly replace the KSC2335R without circuit modifications?

A: Yes. The ST13007D maintains the same 400 V breakdown voltage, exceeds the 7 A current requirement with 8 A rating, and operates at the same 150°C maximum junction temperature. The TO-220 package is mechanically compatible with TO-220-3 footprints. No circuit modifications are required.

Q: What is the difference between ST13007 and ST13007D?

A: Both parts are NPN transistors with identical voltage and current ratings (400 V, 8 A). The primary differences are in DC current gain specifications and saturation voltage characteristics. ST13007D has a higher current cutoff specification (100µA vs. 10µA) and different saturation voltage at rated conditions (2V vs. 3V at 2A, 8A). Both are active products suitable for substitution.

Q: Are the TO-220AB and TO-220 packages interchangeable with TO-220-3?

A: TO-220, TO-220-3, and TO-220AB are all three-lead through-hole packages with compatible pin configurations and mounting footprints. These variants are mechanically interchangeable in standard TO-220 PCB layouts.

Q: Why does the KSC2335R have lower power rating (1.5 W) than the substitutes (80 W)?

A: The KSC2335R and its substitutes share the same TO-220 package form factor. The higher power ratings of the substitutes reflect improved thermal design and die technology in active production parts. The original 1.5 W specification remains valid for the KSC2335R application; the substitutes provide additional thermal margin.

Q: Is RoHS compliance required for the substitute selection?

A: The substitute parts BUJ105A,127 and both ST13007 variants carry RoHS compliance certifications (RoHS Compliant and ROHS3 Compliant respectively). The original KSC2335R does not specify RoHS status. Compliance requirements depend on end-application regulations and customer specifications.

Q: What is the inventory status for each substitute?

A: ST13007D has the highest inventory availability (680,200 pcs), followed by ST13007 (1,218 pcs) and BUJ105A,127 (743 pcs). All three substitutes are in active production with new original stock available.