MJD31CRL Equivalent & Substitute Parts

Part Overview

The MJD31CRL is an NPN bipolar junction transistor manufactured by onsemi, rated for 100 V collector-emitter breakdown voltage and 3 A maximum collector current in a surface mount DPAK package. This device is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The MJD31CRL remains available in inventory but alternative part numbers provide access to active product status and enhanced compliance certifications.

Key Parameters

Parameter	Value
Transistor Type	NPN
Current - Collector (Ic) (Max)	3 A
Voltage - Collector Emitter Breakdown (Max)	100 V
Vce Saturation (Max) @ Ib, Ic	1.2V @ 375mA, 3A
Current - Collector Cutoff (Max)	50µA
DC Current Gain (hFE) (Min) @ Ic, Vce	10 @ 3A, 4V
Power - Max	1.56 W
Frequency - Transition	3MHz
Operating Temperature	-65°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MJD31CRL is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Transistor Type: NPN
Current - Collector (Ic) (Max): 3 A
Voltage - Collector Emitter Breakdown (Max): 100 V
Vce Saturation (Max) @ Ib, Ic: 1.2V @ 375mA, 3A
Current - Collector Cutoff (Max): 50µA or lower
DC Current Gain (hFE) (Min) @ Ic, Vce: 10 @ 3A, 4V
Frequency - Transition: 3MHz
Operating Temperature Range: -65°C ~ 150°C (TJ)

Mechanical Parameters (Must Match):

Mounting Type: Surface Mount
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63

Compliance Parameters:

Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories: Direct Manufacturer Equivalents (identical part numbers from onsemi with active product status) and Parametric Equivalents (parts from alternative manufacturers meeting all electrical and mechanical specifications).

Parameter Comparison

Part Number	Manufacturer	Ic (Max)	Vce Breakdown (Max)	Vce Sat @ Ib, Ic	Ic Cutoff (Max)	hFE (Min)	Power (Max)	Frequency	Temp Range	Package	Product Status	RoHS Status
MJD31CRL	onsemi	3 A	100 V	1.2V @ 375mA, 3A	50µA	10 @ 3A, 4V	1.56 W	3MHz	-65°C ~ 150°C	DPAK	Obsolete	RoHS non-compliant
MJD31CRLG	onsemi	3 A	100 V	1.2V @ 375mA, 3A	50µA	10 @ 3A, 4V	1.56 W	3MHz	-65°C ~ 150°C	DPAK	Active	ROHS3 Compliant
MJD31CT4G	onsemi	3 A	100 V	1.2V @ 375mA, 3A	50µA	10 @ 3A, 4V	1.56 W	3MHz	-65°C ~ 150°C	DPAK	Active	ROHS3 Compliant
NJVMJD31CRLG	onsemi	3 A	100 V	1.2V @ 375mA, 3A	50µA	10 @ 3A, 4V	1.56 W	3MHz	-65°C ~ 150°C	DPAK	Active	ROHS3 Compliant
MJD31CT4-A	STMicroelectronics	3 A	100 V	1.2V @ 375mA, 3A	50µA	10 @ 3A, 4V	15 W	Not specified	-65°C ~ 150°C	DPAK	Active	ROHS3 Compliant
MJD31C-13	Diodes Incorporated	3 A	100 V	1.2V @ 375mA, 3A	1µA	10 @ 3A, 4V	1.56 W	3MHz	-55°C ~ 150°C	DPAK	Active	ROHS3 Compliant
MJD31CT4	onsemi	3 A	100 V	1.2V @ 375mA, 3A	50µA	10 @ 3A, 4V	15 W	3MHz	-65°C ~ 150°C	DPAK	Obsolete	RoHS non-compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

MJD31CRLG and MJD31CT4G are the preferred substitutes for MJD31CRL. Both parts are manufactured by onsemi, maintain identical electrical specifications, and carry active product status with ROHS3 compliance certification. These parts provide direct functional replacement with improved regulatory compliance and supply chain continuity.

Secondary Substitutes (Parametric Equivalents):

NJVMJD31CRLG (onsemi) provides parametric equivalence with active product status and ROHS3 compliance. This part maintains all critical electrical parameters and operating temperature range.

MJD31C-13 (Diodes Incorporated) meets all core electrical specifications with active product status and ROHS3 compliance. The operating temperature minimum is -55°C compared to -65°C for the original part, and collector cutoff current is specified at 1µA rather than 50µA. These differences do not affect functional equivalence for standard applications.

Alternative Substitutes (Power-Enhanced Variants):

MJD31CT4-A (STMicroelectronics) and MJD31CT4 (onsemi) provide enhanced power dissipation capability at 15 W maximum power versus 1.56 W for the original part. These variants maintain electrical equivalence across all other parameters. MJD31CT4-A carries active product status and ROHS3 compliance. MJD31CT4 is obsolete and RoHS non-compliant.

Compliance Considerations:

The original MJD31CRL is RoHS non-compliant. All recommended substitutes (MJD31CRLG, MJD31CT4G, NJVMJD31CRLG, MJD31CT4-A, MJD31C-13) carry ROHS3 compliance certification, supporting transition to compliant supply chains.

Frequently Asked Questions (FAQ)

Q: Can MJD31CRLG be used as a direct replacement for MJD31CRL?

A: Yes. MJD31CRLG is a direct equivalent manufactured by onsemi with identical electrical specifications, operating temperature range, and DPAK package. The primary difference is active product status and ROHS3 compliance certification.

Q: What is the difference between MJD31CT4G and MJD31CRLG?

A: Both parts are manufactured by onsemi and meet identical electrical specifications. The primary difference is packaging format: MJD31CT4G is supplied in Cut Tape (CT) & Digi-Reel format, while MJD31CRLG is supplied in Cut Tape (CT) & Digi-Reel format. Both carry active product status and ROHS3 compliance.

Q: Can MJD31CT4-A from STMicroelectronics replace MJD31CRL?

A: Yes, with the following consideration: MJD31CT4-A has a maximum power rating of 15 W compared to 1.56 W for MJD31CRL. All other electrical parameters, including collector current, breakdown voltage, saturation voltage, and DC current gain, are identical. The enhanced power rating does not prevent functional substitution and may provide additional thermal margin in applications.

Q: Is MJD31C-13 from Diodes Incorporated a suitable substitute?

A: Yes. MJD31C-13 meets all critical electrical specifications including collector current, breakdown voltage, saturation voltage, and DC current gain. The operating temperature minimum is -55°C versus -65°C for the original part. Collector cutoff current is specified at 1µA versus 50µA. These differences do not affect functional equivalence for standard applications operating within the -55°C to 150°C range.

Q: Why is NJVMJD31CRLG listed as a substitute if it has a different base product number?

A: NJVMJD31CRLG maintains identical electrical specifications, operating temperature range, and DPAK package as MJD31CRL. The base product number difference reflects onsemi's internal product designation system. The part is functionally equivalent and carries active product status with ROHS3 compliance.

Q: What is the significance of the packaging format differences (CT, TR, DPAK)?

A: Packaging format refers to supply method: Cut Tape (CT) & Digi-Reel for automated assembly, Tape & Reel (TR) for high-volume production, and DPAK for the physical package type. All substitute parts use the same DPAK physical package, ensuring mechanical compatibility. Packaging format selection depends on assembly process requirements, not functional equivalence.

Q: Are obsolete parts like MJD31CT4 acceptable substitutes?

A: MJD31CT4 meets all electrical specifications but carries obsolete product status and RoHS non-compliance. Active alternatives with improved compliance are available (MJD31CT4G, MJD31CRLG). Obsolete parts present supply chain risk and regulatory compliance concerns.

Q: Can I use MJD31CT4 or MJD31CT4-A if my application requires higher power dissipation?

A: Yes. Both MJD31CT4 and MJD31CT4-A provide 15 W maximum power rating versus 1.56 W for MJD31CRL. All other electrical parameters remain equivalent. MJD31CT4-A is preferred due to active product status and ROHS3 compliance.

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