2SC4518A Equivalent & Substitute Parts Reference

Part Overview

The 2SC4518A, manufactured by Sanken Electric USA Inc., is an NPN bipolar junction transistor (BJT) designed for high voltage and current applications. Key specifications include a collector-emitter breakdown voltage (Vce) rating of 550 V, collector current of 5 A, transition frequency of 6 MHz, and a 35 W power dissipation capability. The device is housed in a TO-220F full pack through-hole package. As this part is classified as "Obsolete," identifying equivalent and substitute transistors that precisely match these critical electrical and mechanical parameters is essential to maintain existing designs or for replacement purposes.

Substiute Parts

2SC4518A

Sanken Electric USA Inc.In Stock: 35142SC4518A Datasheet

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BUJ303AX,127

WeEn SemiconductorsIn Stock: 1147BUJ303AX,127 Datasheet

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FJPF5021OTU

onsemiIn Stock: 2964FJPF5021OTU Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute transistors for the 2SC4518A are identified by ensuring strict adherence to several key parameters: transistor type, maximum collector current, collector-emitter breakdown voltage, DC current gain, saturation voltage, cutoff current, power dissipation, transition frequency (where specified), maximum junction temperature, and mechanical package (TO-220F full pack or equivalent). Substitution within the Transistors, Bipolar (BJT) category mandates precise alignment in these areas to guarantee form, fit, and function compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 2SC4518A is obsolete. BUJ303AX,127 and FJPF5021OTU are classified as "Active" with RoHS-compliant status. All parts in this comparison are RoHS compliant and listed as available in stock. Substitute selection is based exclusively on product lifecycle (active status), category, package type (TO-220F family), and regulatory compliance as defined in the provided data.

Frequently Asked Questions (FAQ)

Q1: What are the main criteria for selecting a substitute for the 2SC4518A?
A1: Substitute selection for the 2SC4518A requires identical or closely matching parameters: transistor type (NPN), maximum collector current, collector-emitter breakdown voltage, DC current gain, cutoff current, saturation voltage, power dissipation, operating temperature, and package type.

Q2: Can a part with a lower collector-emitter breakdown voltage (500 V versus 550 V) be considered a substitute?
A2: Parts are listed as substitutes if they share the required BJT category, NPN type, collector current, package, mounting type, and either match or closely align with the voltage rating as specified.

Q3: Are the package types (TO-220F, TO-220-3 Full Pack) functionally interchangeable in these substitutions?
A3: Package types are matched as TO-220F or TO-220-3 Full Pack, ensuring mechanical compatibility within through-hole mounting requirements.

Q4: What regulatory compliance requirements are addressed by these substitutes?
A4: All equivalent parts are RoHS compliant, aligning with environmental and material safety standards as defined in the input data.

Q5: Do all substitute parts satisfy the original part’s minimum DC current gain and maximum collector cutoff current criteria?
A5: Substitute parts are required to meet or exceed the DC current gain (hFE) and maintain collector cutoff current within the specified range according to the provided parameters.