MJD47T4 Equivalent & Substitute Parts

Part Overview

The MJD47T4 is an NPN bipolar junction transistor manufactured by STMicroelectronics, designed for general-purpose switching and amplification applications. This Surface Mount device is housed in a DPAK (TO-252-3) package and operates at collector voltages up to 250V with a maximum collector current of 1A. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to provide alternative sourcing options when the primary MJD47T4 is unavailable or when specific packaging requirements necessitate alternative part selection.

Substiute Parts

MJD47T4

STMicroelectronicsIn Stock: 4529MJD47T4 Datasheet

Current PartRFQ

MJD47G

onsemiIn Stock: 2264MJD47G Datasheet

DirectRFQ

MJD47T4G

onsemiIn Stock: 18742MJD47T4G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MJD47T4 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Transistor Type: NPN
• Maximum Collector Current (Ic): 1A
• Collector Emitter Breakdown Voltage: 250V
• Vce Saturation: 1V @ 200mA, 1A
• DC Current Gain (hFE): 30 minimum @ 300mA, 10V
• Transition Frequency: 10MHz
• Package Type: TO-252-3 DPAK (2 Leads + Tab)
• Mounting Type: Surface Mount
• RoHS3 Compliance
• MSL Rating: 1 (Unlimited)

The identified substitute parts MJD47G and MJD47T4G meet all mandatory equivalence parameters. Variations in maximum power dissipation (15W for MJD47T4 versus 1.56W for substitutes) and collector cutoff current (100µA versus 200µA) do not preclude substitution when application requirements fall within the lower specified limits. Operating temperature range differences are noted but do not affect substitution eligibility for applications within the overlapping temperature window of -65°C to 150°C.

Parameter Comparison

Engineering Selection Recommendations

MJD47G (onsemi, Tube Packaging)

The MJD47G is electrically equivalent to the MJD47T4 across all critical switching and amplification parameters. This part is supplied in Tube packaging format, making it suitable for applications where reel-based automation is not required. The onsemi MJD47G maintains full RoHS3 compliance and unlimited moisture sensitivity rating. Selection of this part is appropriate when tube packaging aligns with assembly and inventory management requirements.

MJD47T4G (onsemi, Tape & Reel Packaging)

The MJD47T4G is electrically equivalent to the MJD47T4 and is supplied in Tape & Reel format, directly compatible with automated pick-and-place assembly equipment. This part maintains identical electrical specifications and full regulatory compliance (RoHS3, REACH Unaffected). The MJD47T4G is the preferred substitute when high-volume surface mount assembly processes are employed and packaging format compatibility with existing production equipment is required.

Both substitute parts operate within the temperature range of -65°C to 150°C, encompassing the MJD47T4 operating specification of 150°C maximum junction temperature. Selection between MJD47G and MJD47T4G is determined solely by packaging format requirements and assembly methodology.

Frequently Asked Questions (FAQ)

Q: Can MJD47G or MJD47T4G be used as direct replacements for MJD47T4 in existing circuit designs?

A: Yes. Both substitute parts meet all electrical specifications required for NPN bipolar junction transistor operation at 250V collector voltage and 1A maximum collector current. The DPAK package pinout and lead configuration are identical across all three parts. Circuit-level performance is equivalent when operating within the specified electrical parameters.

Q: What is the difference between MJD47G and MJD47T4G?

A: The primary difference is packaging format. MJD47G is supplied in Tube packaging, while MJD47T4G is supplied in Tape & Reel format. Both parts are manufactured by onsemi and are electrically identical. Tape & Reel packaging (MJD47T4G) is optimized for automated assembly lines, while Tube packaging (MJD47G) is suitable for manual assembly or lower-volume applications.

Q: Are there electrical differences between the STMicroelectronics MJD47T4 and onsemi substitutes?

A: The parts share identical specifications for collector current (1A), collector-emitter breakdown voltage (250V), saturation voltage (1V @ 200mA, 1A), DC current gain (30 minimum @ 300mA, 10V), and transition frequency (10MHz). The MJD47T4 specifies a maximum power dissipation of 15W, while the onsemi parts specify 1.56W. The MJD47T4 specifies a maximum collector cutoff current of 100µA, while the onsemi parts specify 200µA. These differences do not affect substitution eligibility for applications operating within the lower specified limits.

Q: Do all three parts have the same regulatory compliance?

A: Yes. MJD47T4, MJD47G, and MJD47T4G are all RoHS3 compliant, REACH Unaffected, and carry MSL rating of 1 (Unlimited). All parts are classified under ECCN EAR99 and HTSUS 8541.29.0095.

Q: What is the operating temperature range for each part?

A: The MJD47T4 specifies a maximum junction temperature of 150°C. The MJD47G and MJD47T4G specify an operating temperature range of -65°C to 150°C. For applications operating at or below 150°C, all three parts are functionally equivalent. The onsemi parts provide extended low-temperature operation capability.

Q: Can MJD47T4 be substituted with MJD47G in high-volume automated assembly?

A: MJD47G is supplied in Tube packaging, which is not compatible with standard tape-fed pick-and-place equipment. For high-volume automated assembly, MJD47T4G (Tape & Reel format) is the appropriate substitute. MJD47G is suitable for manual assembly or lower-volume production environments.

Q: Are there any inventory or lead time considerations when selecting between these parts?

A: Inventory levels are provided for reference: MJD47T4 (4430 pcs), MJD47G (2208 pcs), and MJD47T4G (18668 pcs). Part availability and lead times should be confirmed with the component supplier for current project requirements.