KSH350TM Equivalent & Substitute Parts

Part Overview

The KSH350TM is a PNP Bipolar Junction Transistor (BJT) manufactured by onsemi, rated for 300 V collector-emitter breakdown voltage and 500 mA maximum collector current in a surface mount DPAK package. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical and mechanical compatibility while meeting current availability and compliance standards.

Substiute Parts

KSH350TM

onsemiIn Stock: 2814KSH350TM Datasheet

Current PartRFQ

MJD350T4G

onsemiIn Stock: 104621MJD350T4G Datasheet

DirectRFQ

NJVMJD350T4G

onsemiIn Stock: 20272NJVMJD350T4G Datasheet

DirectRFQ

MJD350T4

onsemiIn Stock: 17660MJD350T4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSH350TM is determined by strict equivalence of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Transistor Type: PNP
• Current - Collector (Ic) (Max): 500 mA
• Voltage - Collector Emitter Breakdown (Max): 300 V
• Current - Collector Cutoff (Max): 100 µA
• DC Current Gain (hFE) (Min) @ Ic, Vce: 30 @ 50mA, 10V
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical requirements. Variations in maximum power dissipation, operating temperature range, product status, and compliance certifications are noted but do not preclude functional substitution when the application requirements align with the substitute part specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: MJD350T4G

The MJD350T4G is the recommended substitute for the obsolete KSH350TM. This part maintains all critical electrical parameters and package specifications while offering active product status and ROHS3 compliance. The MJD350T4G provides enhanced power dissipation capability (15 W versus 1.56 W), which represents a design improvement without introducing incompatibility. The extended operating temperature range (-65°C to 150°C) provides broader environmental coverage. Packaging is available in Cut Tape (CT) and Digi-Reel® formats with substantial inventory availability (104,596 pieces).

Secondary Substitute: NJVMJD350T4G

The NJVMJD350T4G serves as an alternative substitute with active product status and ROHS3 compliance. This part maintains the original 1.56 W power rating and includes specified transition frequency (10 MHz) and saturation voltage characteristics (1 V @ 10mA, 100mA). Packaging is supplied in Tape & Reel (TR) format with 20,200 pieces in inventory. This option is suitable when the original power dissipation specification must be preserved.

Tertiary Substitute: MJD350T4

The MJD350T4 is classified as obsolete and carries RoHS non-compliance status. While electrically equivalent to the KSH350TM with matching core parameters, this part is not recommended for new designs due to product status and regulatory compliance considerations. Existing inventory (17,600 pieces) may be available for legacy system support only.

Frequently Asked Questions (FAQ)

Q: Can MJD350T4G directly replace KSH350TM in existing designs?

A: Yes. The MJD350T4G maintains all critical electrical parameters: 500 mA maximum collector current, 300 V collector-emitter breakdown voltage, 30 minimum DC current gain at specified conditions, and identical DPAK package configuration. The increased power rating (15 W versus 1.56 W) is a design enhancement that does not create incompatibility.

Q: What is the difference between MJD350T4G and NJVMJD350T4G?

A: Both parts are electrically equivalent and maintain core specifications. The primary differences are packaging format (MJD350T4G: Cut Tape/Digi-Reel; NJVMJD350T4G: Tape & Reel), power dissipation rating (MJD350T4G: 15 W; NJVMJD350T4G: 1.56 W), and specified transition frequency (NJVMJD350T4G: 10 MHz). Selection depends on procurement format requirements and whether the original power rating must be preserved.

Q: Why is MJD350T4 not recommended despite electrical equivalence?

A: The MJD350T4 is classified as obsolete and does not meet ROHS3 compliance requirements. While electrically suitable, regulatory and supply chain considerations make MJD350T4G or NJVMJD350T4G preferable for new designs and ongoing production.

Q: Are all substitute parts available in the same DPAK package?

A: Yes. All substitute parts use the TO-252-3 DPAK (2 Leads + Tab), SC-63 package configuration, ensuring mechanical and thermal compatibility with existing PCB layouts and thermal management designs.

Q: What is the moisture sensitivity level for these parts?

A: All parts, including the KSH350TM and all substitutes, carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions during storage or handling.

Q: Do the substitute parts support the same operating temperature range?

A: The KSH350TM specifies a maximum operating temperature of 150°C. MJD350T4G and NJVMJD350T4G extend the range to -65°C to 150°C, providing broader environmental coverage. This extended range does not create incompatibility for applications within the original 150°C maximum specification.