MJD50TF Equivalent & Substitute Parts

Part Overview

The MJD50TF is an NPN bipolar junction transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. This surface mount device operates at a maximum collector voltage of 400 V with a collector current rating of 1 A and maximum power dissipation of 1.56 W. The transistor is housed in a DPAK (TO-252-3) package and is currently in active production status. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when packaging or inventory requirements differ.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector Current (Max)	1	A
Collector-Emitter Breakdown Voltage (Max)	400	V
Vce Saturation (Max)	1	V @ 200mA, 1A
Collector Cutoff Current (Max)	200	µA
DC Current Gain (hFE Min)	30	@ 300mA, 10V
Power Dissipation (Max)	1.56	W
Transition Frequency	10	MHz
Package Type	DPAK (TO-252-3)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitute parts for the MJD50TF are identified based on electrical and mechanical parameter equivalence. The primary substitution criterion is that all electrical characteristics—including maximum collector current, collector-emitter breakdown voltage, saturation voltage, collector cutoff current, DC current gain, power dissipation, and transition frequency—must be identical to the main part. Additionally, the package type must remain DPAK (TO-252-3) to ensure mechanical and thermal compatibility with existing printed circuit board layouts and thermal management designs.

The MJD50G qualifies as a direct substitute because it maintains all specified electrical parameters at identical ratings. The only difference between these parts is the packaging format: the MJD50TF is supplied in Tape & Reel (TR) format, while the MJD50G is supplied in Tube format. Both parts are manufactured by onsemi, carry active product status, and meet the same compliance standards.

Parameter Comparison

Parameter	MJD50TF	MJD50G	Match
Manufacturer	onsemi	onsemi	Yes
Transistor Type	NPN	NPN	Yes
Collector Current (Max)	1 A	1 A	Yes
Collector-Emitter Breakdown Voltage (Max)	400 V	400 V	Yes
Vce Saturation (Max)	1 V @ 200mA, 1A	1 V @ 200mA, 1A	Yes
Collector Cutoff Current (Max)	200 µA	200 µA	Yes
DC Current Gain (hFE Min)	30 @ 300mA, 10V	30 @ 300mA, 10V	Yes
Power Dissipation (Max)	1.56 W	1.56 W	Yes
Transition Frequency	10 MHz	10 MHz	Yes
Package Type	DPAK (TO-252-3)	DPAK (TO-252-3)	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Product Status	Active	Active	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Packaging Format	Tape & Reel (TR)	Tube	No
Operating Temperature Range	0°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)	Partial

Engineering Selection Recommendations

The MJD50G is a direct electrical and mechanical substitute for the MJD50TF. Both parts are manufactured by onsemi, maintain active product status, and comply with ROHS3 and REACH requirements. Selection between these parts should be based on packaging and supply chain requirements.

The MJD50TF in Tape & Reel format is suitable for high-volume automated assembly operations where components are fed directly into pick-and-place equipment. The MJD50G in Tube format is appropriate for lower-volume applications, manual assembly processes, or situations where component handling and storage differ from automated production environments.

The MJD50G offers an extended operating temperature range of -65°C to 150°C compared to the MJD50TF range of 0°C to 150°C. This extended lower temperature specification may be relevant for applications requiring operation in cold environments, though both parts maintain identical electrical performance within their respective operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the MJD50G replace the MJD50TF in an existing circuit design?

A: Yes. The MJD50G is electrically and mechanically equivalent to the MJD50TF. All electrical parameters, including voltage ratings, current ratings, gain characteristics, and power dissipation, are identical. The DPAK package footprint is the same, ensuring direct compatibility with existing printed circuit board layouts.

Q: What is the difference between Tape & Reel and Tube packaging?

A: Tape & Reel packaging supplies components on a continuous carrier tape wound on a reel, designed for automated pick-and-place assembly equipment. Tube packaging supplies components in a plastic tube, typically used for manual assembly or lower-volume production. Both formats contain the same component with identical electrical specifications.

Q: Does the MJD50G have different electrical performance than the MJD50TF?

A: No. Both parts have identical electrical specifications: 1 A maximum collector current, 400 V breakdown voltage, 1 V saturation voltage, 30 minimum DC current gain, 1.56 W power dissipation, and 10 MHz transition frequency.

Q: Why does the MJD50G have a wider operating temperature range?

A: The MJD50G is specified for operation from -65°C to 150°C, while the MJD50TF is specified from 0°C to 150°C. This difference reflects the qualification and testing performed by the manufacturer for each part number variant. Both parts maintain identical electrical performance within their respective operating ranges.

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

A: No. Both the MJD50TF and MJD50G are ROHS3 compliant, REACH unaffected, and carry the same ECCN and HTSUS classifications. Moisture sensitivity level is 1 (Unlimited) for both parts.

Q: Which part should I select for a new design?

A: Selection depends on manufacturing requirements. For automated assembly with pick-and-place equipment, use the MJD50TF (Tape & Reel). For manual assembly, lower-volume production, or applications requiring extended low-temperature operation, use the MJD50G (Tube).

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