MJE13005 Equivalent & Substitute Parts

Part Overview

The MJE13005 is an NPN bipolar junction transistor manufactured by onsemi, designed for switchmode applications in the TO-220 package. This device operates at 400 V collector-emitter breakdown voltage with a maximum collector current of 4 A and 2 W power dissipation. The MJE13005 is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. Substitute parts must maintain electrical compatibility within the specified parameter ranges while accommodating modern component availability and compliance standards.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	-
Voltage - Collector Emitter Breakdown (Max)	400	V
Current - Collector (Ic) (Max)	4	A
Power - Max	2	W
Frequency - Transition	4	MHz
Vce Saturation (Max) @ Ib, Ic	1V @ 1A, 4A	V
DC Current Gain (hFE) (Min) @ Ic, Vce	8 @ 2A, 5V	-
Operating Temperature	-65 to 150	°C
Mounting Type	Through Hole	-
Package / Case	TO-220-3	-

Substitute Part Grouping Explanation

Substitute parts for the MJE13005 are classified based on electrical parameter compatibility within the following criteria:

Primary Substitution Criteria:

Transistor Type: NPN (required match)
Voltage - Collector Emitter Breakdown: minimum 400 V
Current - Collector (Ic) (Max): minimum 4 A
Package / Case: TO-220-3 (mechanical compatibility)
Mounting Type: Through Hole (required match)

Grouping Logic:

Direct Equivalents maintain all critical parameters within the MJE13005 specification envelope: 400 V breakdown voltage, 4 A collector current, and TO-220-3 packaging. These parts are pin-compatible and electrically interchangeable.

Higher Current Capacity Substitutes exceed the 4 A collector current specification while maintaining 400 V breakdown voltage. These parts provide enhanced current handling capability and are suitable for applications where the original 4 A rating is marginal.

Higher Voltage Substitutes exceed the 400 V breakdown voltage specification while maintaining or exceeding the 4 A collector current. These parts provide enhanced voltage margin and are suitable for applications with voltage stress considerations.

Enhanced Power Rating Substitutes provide significantly higher power dissipation capability (70-100 W versus 2 W) while maintaining voltage and current specifications. These parts accommodate thermal management improvements in circuit design.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) A	Vce Breakdown (Max) V	Power (Max) W	Vce Sat @ Ib, Ic	hFE (Min) @ Ic, Vce	Package	Product Status
MJE13005	onsemi	4	400	2	1V @ 1A, 4A	8 @ 2A, 5V	TO-220-3	Obsolete
FJP3305H1TU	Fairchild Semiconductor	4	400	75	1V @ 1A, 4A	8 @ 2A, 5V	TO-220-3	Active
FJP3305H2TU	onsemi	4	400	75	1V @ 1A, 4A	26 @ 1A, 5V	TO-220-3	Last Time Buy
FJP13007H2TU	onsemi	8	400	80	3V @ 2A, 8A	26 @ 2A, 5V	TO-220-3	Last Time Buy
FJP13009H2TU	onsemi	12	400	100	3V @ 3A, 12A	15 @ 5A, 5V	TO-220-3	Active
FJP13009TU	onsemi	12	400	100	3V @ 3A, 12A	8 @ 5A, 5V	TO-220-3	Active
BUJD203A,127	WeEn Semiconductors	4	425	80	1V @ 600mA, 3A	11 @ 2A, 5V	TO-220-3	Active
BUL1102E	STMicroelectronics	4	450	70	1.5V @ 400mA, 2A	12 @ 2A, 5V	TO-220-3	Active
BUL38D	STMicroelectronics	5	450	80	1.1V @ 750mA, 3A	10 @ 10mA, 5V	TO-220-3	Active
BUL49D	STMicroelectronics	5	450	80	1.2V @ 800mA, 4A	4 @ 7A, 10V	TO-220-3	Active
BUL742C	STMicroelectronics	4	400	70	1.5V @ 1A, 3.5A	25 @ 800mA, 3V	TO-220-3	Active

Engineering Selection Recommendations

Direct Equivalent Selection:

FJP3305H1TU (Fairchild Semiconductor, Active status) and FJP3305H2TU (onsemi, Last Time Buy status) are direct electrical equivalents to the MJE13005. Both maintain identical voltage and current specifications with enhanced power rating (75 W versus 2 W). FJP3305H1TU is recommended as the primary choice due to active product status and continuous availability. Both parts are RoHS3 compliant and suitable for new designs.

Higher Current Capacity Alternatives:

FJP13007H2TU and FJP13009H2TU provide 8 A and 12 A collector current capability respectively, while maintaining 400 V breakdown voltage. FJP13009H2TU and FJP13009TU are recommended for applications requiring enhanced current margin, with FJP13009H2TU preferred due to active product status. Both are RoHS3 compliant.

Higher Voltage Alternatives:

BUJD203A,127 (WeEn Semiconductors, 425 V) and BUL1102E (STMicroelectronics, 450 V) provide voltage ratings exceeding the MJE13005 specification. BUL1102E is recommended for applications requiring enhanced voltage margin, with active product status and RoHS3 compliance.

Enhanced Current and Voltage Alternatives:

BUL38D and BUL49D provide 5 A collector current and 450 V breakdown voltage, exceeding both the current and voltage specifications of the MJE13005. Both are STMicroelectronics products with active status and RoHS3 compliance.

Voltage-Matched Alternative:

BUL742C (STMicroelectronics, 400 V, 4 A) matches the MJE13005 voltage and current specifications with enhanced power rating (70 W). This part is active and RoHS3 compliant, suitable as a direct replacement.

All recommended substitutes are available in TO-220-3 packaging with through-hole mounting compatibility. Selection should be based on application-specific requirements for current capacity, voltage margin, and thermal management capability.

Frequently Asked Questions (FAQ)

Q: Can FJP3305H1TU directly replace MJE13005 in existing designs?

A: Yes. FJP3305H1TU maintains identical voltage (400 V), current (4 A), and saturation voltage specifications as the MJE13005. Pin configuration and TO-220-3 packaging are compatible. The enhanced power rating (75 W versus 2 W) provides improved thermal performance without affecting electrical operation.

Q: What is the difference between FJP3305H1TU and FJP3305H2TU?

A: Both parts maintain identical voltage and current specifications. FJP3305H1TU is manufactured by Fairchild Semiconductor with active product status. FJP3305H2TU is manufactured by onsemi with Last Time Buy status. FJP3305H1TU is recommended for new designs due to active availability.

Q: When should higher current capacity parts like FJP13009TU be selected?

A: FJP13009TU (12 A) should be selected when the application requires current margin beyond the MJE13005 specification (4 A), or when thermal management improvements are needed through enhanced power rating (100 W). The 400 V voltage specification remains identical.

Q: Are all substitute parts RoHS compliant?

A: FJP3305H1TU, FJP3305H2TU, FJP13007H2TU, FJP13009H2TU, FJP13009TU, BUL1102E, BUL38D, BUL49D, and BUL742C are RoHS3 compliant. BUJD203A,127 is RoHS compliant. The original MJE13005 is RoHS non-compliant.

Q: What is the significance of the higher voltage ratings in BUJD203A,127 (425 V) and BUL1102E (450 V)?

A: Higher voltage ratings provide additional safety margin in applications subject to voltage transients or overvoltage conditions. These parts are suitable for designs requiring enhanced voltage stress tolerance while maintaining 4 A collector current capability.

Q: Can BUL38D or BUL49D be used as direct replacements?

A: BUL38D and BUL49D provide 5 A collector current and 450 V breakdown voltage, exceeding MJE13005 specifications in both parameters. These parts are electrically compatible but represent design upgrades rather than direct replacements. They are suitable for applications where enhanced current and voltage capability are beneficial.

Q: What packaging considerations apply to all substitute parts?

A: All substitute parts listed maintain TO-220-3 package configuration with through-hole mounting. Pin assignments are compatible with MJE13005 applications. No PCB layout modifications are required for mechanical compatibility.

Q: Which substitute part is recommended for new production designs?

A: FJP3305H1TU (Fairchild Semiconductor) is recommended for new production designs. This part maintains MJE13005 electrical specifications, provides enhanced power rating, maintains active product status, and is RoHS3 compliant. Inventory availability is confirmed at 65,800 pieces.

Q: Are there performance differences in saturation voltage between substitute parts?

A: Yes. MJE13005 specifies 1V saturation at 1A/4A conditions. FJP3305H1TU and FJP3305H2TU maintain this specification. Higher current parts (FJP13007H2TU, FJP13009H2TU, FJP13009TU) specify 3V saturation at higher current conditions. STMicroelectronics parts (BUL1102E, BUL38D, BUL49D, BUL742C) specify 1.1-1.5V saturation. Application-specific switching loss analysis may be required for critical designs.

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