Equivalent & Substitute Parts Reference for 2SC3851

Part Overview

The Sanken Electric USA Inc. 2SC3851 is a Bipolar (BJT) NPN transistor featuring a 60 V collector-emitter breakdown voltage, 4 A maximum collector current, and 25 W maximum power dissipation. Packaged in a TO-220-3 Full Pack, it is suitable for through-hole mounting and rated for operation up to 150°C junction temperature. The 2SC3851 product status is marked as obsolete, making it necessary to identify alternative models with matching electrical and mechanical parameters for maintaining or designing circuits that originally specified this device.

Substiute Parts

2SC3851

Sanken Electric USA Inc.In Stock: 34212SC3851 Datasheet

Current PartRFQ

D44H8

STMicroelectronicsIn Stock: 17270D44H8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2SC3851 have been grouped strictly by matching the key transistor parameters: NPN polarity, collector-emitter voltage rating, maximum collector current, DC current gain, mounting type, package equivalence, maximum junction temperature, RoHS compliance, and MSL rating. Compatibility is determined only by the values explicitly provided in the category requirements.

Parameter Comparison

Engineering Selection Recommendations

Selection between the 2SC3851 and substitute D44H8 should be guided strictly by part availability and compliance status. The 2SC3851 is obsolete, whereas D44H8 is active and RoHS/REACH compliant. Both options meet the stated MSL rating and environmental profiles. The mechanical mounting and package compatibility are within the same category specifications.

Frequently Asked Questions (FAQ)

Q: What are the key electrical parameters to consider for substitution in this category?
A: Transistor polarity (NPN), collector-emitter breakdown voltage, collector current, DC current gain, and power dissipation are the essential substitution parameters for Bipolar (BJT) transistors.

Q: Are there any mounting or package constraints for substituting the 2SC3851?
A: Both the 2SC3851 and D44H8 are through-hole transistors in TO-220-3 package types, ensuring compatibility in mounting and layout within this product category.

Q: Why is the D44H8 suitable as a substitute for the 2SC3851?
A: The D44H8 matches all provided electrical and mechanical parameters, including voltage, current, gain, package type, and environmental compliance, as required for direct substitution.

Q: Does RoHS and MSL compliance affect substitution eligibility?
A: RoHS and MSL ratings provided confirm that both 2SC3851 and D44H8 meet regulatory and handling requirements, supporting direct substitution from a compliance standpoint.

Q: Can substitute selection be made solely on the above table?
A: Substitute selection in this context is strictly based on the documented common parameters as shown, aligned to product category standards.

Q: Is active product status required for substitutes?
A: Given the 2SC3851 is obsolete, substitute parts are preferentially selected with active status to ensure supply continuity within the stated parameters.