KSH3055TM Equivalent & Substitute Parts

Part Overview

The KSH3055TM is an NPN bipolar junction transistor manufactured by onsemi, rated for 60 V collector-emitter breakdown voltage and 10 A maximum collector current in a surface mount DPAK package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The KSH3055TM serves applications requiring moderate-power NPN switching and amplification in compact surface mount form factors.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	10	A
Vce Saturation (Max) @ Ib, Ic	8V @ 3.3A, 10A	—
Current - Collector Cutoff (Max)	50	µA
DC Current Gain (hFE) (Min) @ Ic, Vce	20 @ 4A, 4V	—
Power - Max	1.75	W
Frequency - Transition	2	MHz
Mounting Type	Surface Mount	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
Operating Temperature (Max)	150	°C (TJ)
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the KSH3055TM is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 60 V
Current - Collector (Ic) (Max): 10 A
Vce Saturation (Max) @ Ib, Ic: 8V @ 3.3A, 10A
Current - Collector Cutoff (Max): 50 µA
DC Current Gain (hFE) (Min) @ Ic, Vce: 20 @ 4A, 4V
Frequency - Transition: 2 MHz
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 parts are grouped into two categories:

Direct Equivalents (onsemi MJD3055 Series): Parts that match all electrical parameters and operating temperature range, differing only in packaging format (Cut Tape vs. Tape & Reel) or product status (Active vs. Obsolete).

Cross-Manufacturer Equivalent (STMicroelectronics MJD3055T4): A part from an alternative manufacturer that matches all electrical parameters but differs in maximum power rating and operating temperature specification.

Similar Parts (STD1802T4): Parts that share the same package and voltage rating but differ in collector current rating and other electrical characteristics, suitable only for applications with reduced current requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max)	Vce Breakdown (Max)	Power (Max)	Frequency - Transition	Operating Temp (Max)	Packaging	Inventory
KSH3055TM	onsemi	Obsolete	10 A	60 V	1.75 W	2 MHz	150°C	Cut Tape (CT) & Digi-Reel®	10200 Pcs
MJD3055T4G	onsemi	Active	10 A	60 V	1.75 W	2 MHz	-55°C ~ 150°C	Cut Tape (CT) & Digi-Reel®	20400 Pcs
MJD3055RLG	onsemi	Active	10 A	60 V	1.75 W	2 MHz	-55°C ~ 150°C	Tape & Reel (TR)	15200 Pcs
NJVMJD3055T4G	onsemi	Active	10 A	60 V	1.75 W	2 MHz	-55°C ~ 150°C	Tape & Reel (TR)	20100 Pcs
MJD3055T4	STMicroelectronics	Active	10 A	60 V	20 W	2 MHz	150°C	Cut Tape (CT) & Digi-Reel®	3506 Pcs
STD1802T4	STMicroelectronics	Active	3 A	60 V	15 W	150 MHz	150°C	Cut Tape (CT) & Digi-Reel®	19164 Pcs

Engineering Selection Recommendations

Primary Substitutes (onsemi MJD3055 Series):

MJD3055T4G, MJD3055RLG, and NJVMJD3055T4G are direct functional equivalents to the KSH3055TM. All three parts are manufactured by onsemi, maintain identical electrical specifications, and carry Active product status. The primary distinction is packaging format: MJD3055T4G and NJVMJD3055T4G are supplied in Tape & Reel format, while MJD3055T4G is available in Cut Tape & Digi-Reel format. MJD3055T4G and MJD3055RLG offer extended operating temperature range (-55°C to 150°C) compared to the KSH3055TM specification (150°C maximum). All three parts are ROHS3 compliant with MSL 1 rating.

Cross-Manufacturer Equivalent (STMicroelectronics):

MJD3055T4 from STMicroelectronics matches all electrical parameters of the KSH3055TM and maintains the same DPAK package. This part is Active status and ROHS3 compliant. The MJD3055T4 features a higher maximum power rating of 20 W compared to 1.75 W for the KSH3055TM, providing additional thermal margin in power-dissipation-limited applications. Operating temperature specification is 150°C maximum, matching the KSH3055TM.

Similar Part (STMicroelectronics STD1802T4):

STD1802T4 shares the same DPAK package and 60 V voltage rating but is rated for only 3 A maximum collector current, compared to 10 A for the KSH3055TM. This part is suitable only for applications where collector current does not exceed 3 A. STD1802T4 features significantly higher transition frequency (150 MHz vs. 2 MHz) and higher power rating (15 W), making it appropriate for higher-frequency switching applications with reduced current requirements.

Frequently Asked Questions (FAQ)

Q: Can MJD3055T4G be used as a direct replacement for KSH3055TM?

A: Yes. MJD3055T4G is electrically equivalent to KSH3055TM across all critical parameters: 10 A collector current, 60 V breakdown voltage, 2 MHz transition frequency, and identical saturation characteristics. Both use the DPAK package. MJD3055T4G is Active status, whereas KSH3055TM is Obsolete. MJD3055T4G offers extended operating temperature range (-55°C to 150°C).

Q: What is the difference between MJD3055T4G, MJD3055RLG, and NJVMJD3055T4G?

A: All three parts are electrically identical and manufactured by onsemi. The differences are packaging format only: MJD3055T4G is supplied in Cut Tape & Digi-Reel format, while MJD3055RLG and NJVMJD3055T4G are supplied in Tape & Reel format. Selection depends on assembly equipment compatibility and procurement requirements.

Q: Can STMicroelectronics MJD3055T4 replace KSH3055TM?

A: Yes, for applications where the higher power rating (20 W vs. 1.75 W) is acceptable or beneficial. MJD3055T4 matches all electrical parameters and uses the same DPAK package. The higher power rating provides additional thermal capability but does not affect electrical performance in standard switching applications.

Q: Is STD1802T4 a suitable replacement for KSH3055TM?

A: STD1802T4 is not a direct replacement. While both parts use the DPAK package and support 60 V operation, STD1802T4 is rated for only 3 A maximum collector current, compared to 10 A for KSH3055TM. STD1802T4 is suitable only for applications where collector current does not exceed 3 A. STD1802T4 features higher transition frequency (150 MHz) and higher power rating (15 W), making it appropriate for different application classes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. KSH3055TM and all listed substitute parts (MJD3055T4G, MJD3055RLG, NJVMJD3055T4G, MJD3055T4, and STD1802T4) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the difference in operating temperature between KSH3055TM and MJD3055T4G?

A: KSH3055TM specifies maximum junction temperature of 150°C. MJD3055T4G specifies operating temperature range of -55°C to 150°C, providing extended low-temperature capability. Both parts have identical maximum temperature limits.

Q: Which substitute part has the highest inventory availability?

A: MJD3055T4G and NJVMJD3055T4G both have 20400 and 20100 Pcs in stock respectively, compared to 10200 Pcs for KSH3055TM. MJD3055RLG has 15200 Pcs available. STMicroelectronics MJD3055T4 has lower inventory at 3506 Pcs.

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