FJD5553TM Equivalent & Substitute Parts

Part Overview

The FJD5553TM is an NPN bipolar junction transistor manufactured by onsemi, rated for 400 V collector-emitter breakdown voltage and 3 A maximum collector current in a Surface Mount TO-252AA (DPAK) package. This device is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain constraints, or design flexibility within specified parameter ranges.

Substiute Parts

FJD5553TM

onsemiIn Stock: 15326FJD5553TM Datasheet

Current PartRFQ

MJD340G

onsemiIn Stock: 2013MJD340G Datasheet

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MJD340RLG

onsemiIn Stock: 1313MJD340RLG Datasheet

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STLD128DNT4

STMicroelectronicsIn Stock: 3715STLD128DNT4 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FJD5553TM are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Transistor Type: NPN (required match)
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63 (required match for mechanical compatibility)
• Mounting Type: Surface Mount (required match)
• Voltage - Collector Emitter Breakdown (Max): 300 V minimum (FJD5553TM rated 400 V)
• Current - Collector (Ic) (Max): 500 mA minimum (FJD5553TM rated 3 A)
• Operating Temperature: 150°C maximum junction temperature (required match or better)
• RoHS Status: ROHS3 Compliant (required match)

Substitutes are grouped into two categories based on voltage and current ratings relative to the main part specifications.

Parameter Comparison

Engineering Selection Recommendations

FJD5553TM (Primary Part): Active product status with 15,224 pcs in stock. ROHS3 compliant, REACH unaffected, and MSL 1 (unlimited moisture sensitivity). Suitable for applications requiring 400 V breakdown voltage and 3 A collector current in DPAK package.

MJD340G and MJD340RLG (onsemi Substitutes): Both parts are Active status, ROHS3 compliant, and MSL 1. Rated for 300 V breakdown voltage and 500 mA collector current. MJD340G is supplied in Tube packaging (2,000 pcs stock), while MJD340RLG is supplied in Tape & Reel packaging (1,282 pcs stock). These substitutes are suitable for applications where collector current requirements do not exceed 500 mA and breakdown voltage of 300 V is acceptable. Higher power dissipation capability (15 W) compared to FJD5553TM (1.25 W) provides thermal margin.

STLD128DNT4 (STMicroelectronics Substitute): Active product status with 3,700 pcs in stock. ROHS3 compliant, REACH unaffected, and MSL 1. Rated for 400 V breakdown voltage and 4 A collector current, exceeding FJD5553TM specifications. Supplied in Tape & Reel packaging. This substitute is suitable for applications requiring higher current capability (4 A) while maintaining 400 V voltage rating. Power dissipation capability (20 W) provides enhanced thermal performance.

All substitute parts maintain identical package geometry (TO-252-3, DPAK), surface mount mounting type, and maximum operating temperature (150°C junction temperature), ensuring mechanical and thermal compatibility with FJD5553TM applications.

Frequently Asked Questions (FAQ)

Q: Can MJD340G or MJD340RLG be used as direct replacements for FJD5553TM?

A: MJD340G and MJD340RLG are electrically compatible substitutes for applications where the collector current requirement does not exceed 500 mA and a 300 V breakdown voltage rating is acceptable. Both parts share identical TO-252-3 DPAK package geometry and surface mount configuration. If the application requires the full 3 A collector current or 400 V breakdown voltage of the FJD5553TM, these onsemi substitutes are not suitable.

Q: What are the advantages of STLD128DNT4 over FJD5553TM?

A: STLD128DNT4 provides higher collector current capability (4 A versus 3 A) and significantly higher power dissipation rating (20 W versus 1.25 W), while maintaining the same 400 V breakdown voltage and TO-252-3 DPAK package. This substitute is beneficial for applications requiring enhanced current handling or thermal performance. STLD128DNT4 is manufactured by STMicroelectronics rather than onsemi.

Q: Are all substitute parts available in the same packaging options as FJD5553TM?

A: No. FJD5553TM is supplied in Cut Tape (CT) and Digi-Reel® packaging. MJD340G is supplied in Tube packaging, while MJD340RLG and STLD128DNT4 are supplied in Tape & Reel (TR) packaging. Packaging selection depends on assembly process requirements and order quantities.

Q: Do all parts meet the same compliance standards?

A: Yes. FJD5553TM, MJD340G, MJD340RLG, and STLD128DNT4 are all ROHS3 compliant, REACH unaffected, and classified as MSL 1 (unlimited moisture sensitivity). All parts carry ECCN EAR99 classification and HTSUS code 8541.29.0095.

Q: What is the primary difference between MJD340G and MJD340RLG?

A: Both parts are electrically identical onsemi MJD340 base products with 300 V breakdown voltage and 500 mA collector current. The primary difference is packaging: MJD340G is supplied in Tube format, while MJD340RLG is supplied in Tape & Reel (TR) format. Selection depends on assembly equipment compatibility and order volume requirements.

Q: Can FJD5553TM be substituted with STLD128DNT4 in all applications?

A: STLD128DNT4 is a suitable substitute for FJD5553TM in applications where the 400 V breakdown voltage and higher current capability (4 A) are compatible with circuit design. The primary consideration is manufacturer change from onsemi to STMicroelectronics. Both parts share identical TO-252-3 DPAK package geometry and maximum operating temperature (150°C junction temperature).