MJD50RLG Equivalent & Substitute Parts

Part Overview

The MJD50RLG is an NPN bipolar junction transistor manufactured by onsemi, rated for 400 V collector-emitter breakdown voltage and 1 A maximum collector current in a surface mount DPAK package. This device is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts maintain identical electrical specifications and mechanical compatibility while offering active product status and improved supply availability.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	400 V
Current - Collector (Ic) (Max)	1 A
Vce Saturation (Max) @ Ib, Ic	1 V @ 200 mA, 1 A
Current - Collector Cutoff (Max)	200 µA
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 300 mA, 10 V
Power - Max	1.56 W
Frequency - Transition	10 MHz
Operating Temperature	-65°C ~ 150°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the obsolete MJD50RLG is based on strict parametric equivalence across all electrical and mechanical specifications. The following criteria determine valid substitutes:

Electrical Equivalence Requirements:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 400 V
Current - Collector (Ic) (Max): 1 A
Vce Saturation (Max) @ Ib, Ic: 1 V @ 200 mA, 1 A
Current - Collector Cutoff (Max): 200 µA
DC Current Gain (hFE) (Min) @ Ic, Vce: 30 @ 300 mA, 10 V
Power - Max: 1.56 W
Frequency - Transition: 10 MHz
Operating Temperature: -65°C ~ 150°C (TJ)

Mechanical Equivalence Requirements:

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

Compliance Requirements:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitutes meet these criteria and are manufactured by onsemi with active product status.

Parameter Comparison

Parameter	MJD50RLG	MJD50T4G	MJD50TF	NJVMJD50T4G
Manufacturer	onsemi	onsemi	onsemi	onsemi
Product Status	Obsolete	Active	Active	Active
Transistor Type	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	400 V	400 V	400 V	400 V
Current - Collector (Ic) (Max)	1 A	1 A	1 A	1 A
Vce Saturation (Max) @ Ib, Ic	1 V @ 200 mA, 1 A	1 V @ 200 mA, 1 A	1 V @ 200 mA, 1 A	1 V @ 200 mA, 1 A
Current - Collector Cutoff (Max)	200 µA	200 µA	200 µA	200 µA
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 300 mA, 10 V	30 @ 300 mA, 10 V	30 @ 300 mA, 10 V	30 @ 300 mA, 10 V
Power - Max	1.56 W	1.56 W	1.56 W	1.56 W
Frequency - Transition	10 MHz	10 MHz	10 MHz	10 MHz
Operating Temperature	-65°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)	150°C (TJ)	-65°C ~ 150°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Supplier Device Package	DPAK	DPAK	DPAK	DPAK
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Option	Not specified	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

MJD50T4G is the primary substitute for MJD50RLG. This part maintains full electrical and mechanical equivalence with active product status. The MJD50T4G is available in Cut Tape and Digi-Reel packaging options, providing flexibility for both prototype and production environments. Inventory availability is substantial at 22,639 pieces.

MJD50TF serves as an alternative substitute with identical electrical specifications and DPAK package compatibility. This part is available in Tape & Reel packaging and maintains active product status. The operating temperature specification differs slightly, with a maximum junction temperature of 150°C (compared to -65°C ~ 150°C for other variants). Inventory availability is 6,080 pieces.

NJVMJD50T4G is a qualified substitute manufactured by onsemi with full parametric equivalence to MJD50RLG. This variant is available in Tape & Reel packaging with active product status. The NJVMJD50T4G maintains the full operating temperature range of -65°C ~ 150°C (TJ). Inventory availability is 17,800 pieces.

All three substitutes are ROHS3 compliant, REACH unaffected, and carry MSL rating of 1 (Unlimited), ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can MJD50T4G be used as a direct replacement for MJD50RLG?

A: Yes. MJD50T4G is a parametric equivalent with identical electrical specifications (400 V breakdown voltage, 1 A collector current, 1.56 W power dissipation, 10 MHz transition frequency) and mechanical compatibility (TO-252-3 DPAK package). The primary difference is product status: MJD50T4G is active while MJD50RLG is obsolete.

Q: What is the difference between MJD50T4G and MJD50TF?

A: Both parts are parametric equivalents with identical electrical specifications. The primary differences are packaging format (MJD50T4G available in Cut Tape and Digi-Reel; MJD50TF in Tape & Reel) and operating temperature specification (MJD50TF specifies 150°C maximum junction temperature, while MJD50T4G specifies -65°C ~ 150°C range).

Q: Is NJVMJD50T4G compatible with MJD50RLG applications?

A: Yes. NJVMJD50T4G maintains full electrical and mechanical equivalence to MJD50RLG. All critical parameters including voltage rating, current rating, saturation voltage, current gain, power dissipation, and transition frequency are identical. The DPAK package ensures mechanical compatibility.

Q: What packaging options are available for substitutes?

A: MJD50T4G is available in Cut Tape (CT) and Digi-Reel packaging. MJD50TF and NJVMJD50T4G are available in Tape & Reel (TR) format. Selection depends on production volume and assembly requirements.

Q: Are all substitutes RoHS compliant?

A: Yes. MJD50T4G, MJD50TF, and NJVMJD50T4G are all ROHS3 compliant with MSL rating of 1 (Unlimited), meeting standard environmental and reliability requirements.

Q: Which substitute has the best inventory availability?

A: MJD50T4G has the highest inventory at 22,639 pieces, followed by NJVMJD50T4G at 17,800 pieces, and MJD50TF at 6,080 pieces.

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