MJE13003D-BP Equivalent & Substitute Parts

Part Overview

The MJE13003D-BP is a through-hole NPN bipolar junction transistor manufactured by Micro Commercial Co, rated for 400 V collector-emitter breakdown voltage and 1.5 A maximum collector current. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across an industrial temperature range of -55°C to 150°C and is housed in a TO-251 package configuration.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	1.5	A
Voltage - Collector Emitter Breakdown (Max)	400	V
Vce Saturation (Max) @ Ib, Ic	1 V @ 250mA, 1A	—
Power - Max	1.25	W
Frequency - Transition	5	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the MJE13003D-BP is determined by the following critical parameters:

Transistor Type: Must be NPN
Current Rating (Ic Max): Must equal or exceed 1.5 A
Voltage Rating (Vce Breakdown): Must equal or exceed 400 V
Package Type: Must be TO-251 through-hole configuration
Mounting Compatibility: Must support through-hole PCB assembly
Compliance: Must maintain ROHS3 compliance status

The APT13003DI-G1 from Diodes Incorporated satisfies all substitution criteria. This part maintains NPN polarity, supports 1.5 A collector current, exceeds the 400 V breakdown voltage requirement at 450 V, and utilizes the identical TO-251 package footprint. Both components are ROHS3 compliant and rated for industrial temperature ranges.

Parameter Comparison

Parameter	MJE13003D-BP (Main)	APT13003DI-G1 (Substitute)	Compatibility
Manufacturer	Micro Commercial Co	Diodes Incorporated	Different manufacturer
Transistor Type	NPN	NPN	Match
Current - Collector (Ic) Max	1.5 A	1.5 A	Match
Voltage - Collector Emitter Breakdown (Max)	400 V	450 V	Substitute exceeds requirement
Vce Saturation (Max) @ Ib, Ic	1 V @ 250mA, 1A	400 mV @ 250mA, 1A	Substitute has lower saturation voltage
Power - Max	1.25 W	24 W	Substitute exceeds requirement
Frequency - Transition	5 MHz	4 MHz	Substitute slightly lower
Operating Temperature Range	-55°C to 150°C	-65°C to 150°C	Substitute has extended low-temperature range
Mounting Type	Through Hole	Through Hole	Match
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Match

Engineering Selection Recommendations

The APT13003DI-G1 is a direct functional substitute for the MJE13003D-BP. Both components are obsolete products, and the APT13003DI-G1 offers equivalent or superior electrical performance across all critical parameters. The substitute part provides higher voltage headroom (450 V vs. 400 V), improved saturation characteristics (400 mV vs. 1 V), and greater power dissipation capability (24 W vs. 1.25 W), making it suitable for applications requiring the original MJE13003D-BP specifications.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity classification (MSL 1), ensuring compatibility with standard PCB assembly and storage protocols. The identical TO-251 package footprint permits direct PCB layout reuse without modification.

Frequently Asked Questions (FAQ)

Q: Can the APT13003DI-G1 be used as a direct replacement for the MJE13003D-BP on existing PCBs?

A: Yes. Both components use the TO-251 package with identical pin configuration and lead spacing. No PCB layout modifications are required for substitution.

Q: What is the significance of the lower transition frequency in the APT13003DI-G1 (4 MHz vs. 5 MHz)?

A: The APT13003DI-G1 operates at 4 MHz transition frequency compared to the MJE13003D-BP at 5 MHz. This difference is acceptable for applications operating below these frequency thresholds. Applications requiring operation at or above 5 MHz should verify compatibility with the substitute part's frequency characteristics.

Q: Why does the APT13003DI-G1 have a significantly higher power rating (24 W vs. 1.25 W)?

A: The higher power rating indicates improved thermal performance and greater heat dissipation capability. This provides additional design margin and does not negatively impact compatibility. The substitute part can safely operate in applications designed for the original 1.25 W specification.

Q: Are there compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity classification. The APT13003DI-G1 includes REACH Affected status, which may be relevant for certain regulatory jurisdictions. Verify REACH compliance requirements for your specific application and region.

Q: What does the lower Vce saturation voltage in the APT13003DI-G1 mean for circuit performance?

A: The APT13003DI-G1 exhibits lower saturation voltage (400 mV vs. 1 V) at the specified test conditions. This results in reduced power dissipation during saturation and improved switching efficiency. This characteristic is beneficial for most applications and does not introduce compatibility issues.

Q: Is the extended operating temperature range of the APT13003DI-G1 (-65°C to 150°C vs. -55°C to 150°C) significant?

A: The APT13003DI-G1 supports operation at -65°C, extending the lower temperature limit by 10°C compared to the MJE13003D-BP. This provides additional design margin for applications operating in cold environments. Applications limited to -55°C and above are unaffected by this difference.

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