2SC4672T100Q Equivalent & Substitute Parts

Part Overview

The 2SC4672T100Q is an NPN bipolar junction transistor manufactured by Rohm Semiconductor, rated for 50V collector-emitter breakdown voltage and 2A maximum collector current. This device is packaged in MPT3 surface mount configuration with a maximum power dissipation of 500mW and transition frequency of 210MHz. The part is designated as "Not For New Designs," indicating it has been superseded in Rohm's product portfolio. Equivalent and substitute parts are necessary for applications requiring continued supply, design flexibility, or performance optimization within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	2	A
Power - Max	500	mW
Frequency - Transition	210	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 2SC4672T100Q is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 50V minimum
Current - Collector (Ic) (Max): 2A minimum
Mounting Type: Surface Mount
Package / Case: TO-243AA
RoHS Status: ROHS3 Compliant

Substitution Categories:

Direct Substitutes maintain all primary electrical specifications (50V, 2A) with equivalent or superior performance characteristics and active product status.

Similar Substitutes exceed the primary current rating (3A instead of 2A) or power dissipation while maintaining the 50V voltage specification and TO-243AA package. These parts are suitable for applications where higher current capability provides design margin or future scalability.

All substitute parts listed are surface mount devices in TO-243AA package configuration with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Parameter Comparison

Part Number	Manufacturer	Ic (Max) [A]	Vce Breakdown (Max) [V]	Power (Max) [mW]	Frequency - Transition [MHz]	Vce Sat @ Ib, Ic [mV]	hFE (Min) @ Ic, Vce	Product Status	Package
2SC4672T100Q	Rohm Semiconductor	2	50	500	210	350 @ 50mA, 1A	120 @ 500mA, 2V	Not For New Designs	MPT3
PBSS4250X,115	Nexperia USA Inc.	2	50	1000	100	320 @ 200mA, 2A	300 @ 1A, 2V	Active	SOT-89
PBSS4250X,135	Nexperia USA Inc.	2	50	1000	100	320 @ 200mA, 2A	300 @ 1A, 2V	Active	SOT-89
2DC4672-13	Diodes Incorporated	3	50	900	180	350 @ 50mA, 1A	82 @ 500mA, 2V	Active	SOT-89-3
2SC5964-TD-E	onsemi	3	50	3500	380	290 @ 100mA, 2A	200 @ 100mA, 2V	Active	PCP
2SC5964-TD-H	onsemi	3	50	3500	380	290 @ 100mA, 2A	200 @ 100mA, 2V	Active	PCP
2SD1623S-TD-E	onsemi	2	50	500	150	400 @ 50mA, 1A	100 @ 100mA, 2V	Active	PCP
2SD1624S-TD-E	onsemi	3	50	500	150	500 @ 100mA, 2A	140 @ 100mA, 2V	Active	PCP
2SD1624T-TD-E	onsemi	3	50	500	150	500 @ 100mA, 2A	200 @ 100mA, 2V	Active	PCP
DNLS350Y-13	Diodes Incorporated	3	50	1000	100	370 @ 300mA, 3A	300 @ 1A, 2V	Active	SOT-89-3
PBSS4350X,115	Nexperia USA Inc.	3	50	1600	100	370 @ 300mA, 3A	300 @ 1A, 2V	Active	SOT-89

Engineering Selection Recommendations

Direct Substitutes (2A Current Rating):

The PBSS4250X,115 and PBSS4250X,135 from Nexperia USA Inc. are direct electrical substitutes for the 2SC4672T100Q, maintaining the 2A collector current specification and 50V breakdown voltage. Both parts are in active product status with AEC-Q100 automotive qualification. The PBSS4250 series provides superior power dissipation (1W versus 500mW) and higher DC current gain (300 versus 120), enabling improved circuit performance. These parts are suitable for direct replacement in existing designs.

Similar Substitutes (3A Current Rating):

The 2SD1623S-TD-E from onsemi matches the 2SC4672T100Q in collector current (2A) and power dissipation (500mW) while offering active product status. This part is recommended for applications requiring long-term supply assurance and design continuity.

The 2DC4672-13 (Diodes Incorporated), DNLS350Y-13 (Diodes Incorporated), and PBSS4350X,115 (Nexperia USA Inc.) provide 3A collector current capability with 50V breakdown voltage. These parts are suitable for applications where increased current margin is required or where circuit redesign permits utilization of higher current capacity.

The 2SC5964-TD-E and 2SC5964-TD-H from onsemi offer significantly enhanced performance with 3A current rating, 3.5W power dissipation, and 380MHz transition frequency. These parts are appropriate for high-performance applications requiring superior frequency response and thermal capability.

All recommended substitutes maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and surface mount configuration in TO-243AA package family.

Frequently Asked Questions (FAQ)

Q: Can PBSS4250X,115 directly replace 2SC4672T100Q in existing PCB layouts?

A: The PBSS4250X,115 uses SOT-89 package while the 2SC4672T100Q uses MPT3 package. Both are TO-243AA family devices with identical pin configuration and footprint compatibility. PCB layout modification is not required.

Q: What is the primary difference between PBSS4250X,115 and PBSS4250X,135?

A: Both parts are electrically identical with 2A collector current, 50V breakdown voltage, and 1W power dissipation. The suffix designates different packaging reels. Selection between these variants depends on supply chain and inventory management requirements.

Q: Why are 3A-rated parts listed as substitutes for a 2A-rated device?

A: Parts with higher current ratings (3A) satisfy the minimum electrical requirements of the 2SC4672T100Q (2A) while providing additional design margin. These substitutes are suitable for applications where increased current capacity is beneficial or where circuit topology permits utilization of enhanced specifications.

Q: Are all substitute parts automotive-qualified?

A: The PBSS4250X,115, PBSS4250X,135, and PBSS4350X,115 from Nexperia carry AEC-Q100 automotive qualification. The onsemi and Diodes Incorporated parts do not list automotive qualification in the provided specifications. Selection should consider application requirements and qualification standards.

Q: What is the significance of transition frequency differences among substitute parts?

A: The 2SC4672T100Q operates at 210MHz transition frequency. Substitute parts range from 100MHz to 380MHz. Higher transition frequency (2SC5964 series at 380MHz) enables operation in higher-frequency applications. Lower transition frequency parts (100MHz) are suitable for standard-speed switching applications.

Q: How do saturation voltage specifications affect circuit performance?

A: Vce saturation voltage determines voltage drop across the transistor in saturated switching mode. Lower saturation voltage reduces power dissipation and heat generation. The 2SC5964 series exhibits 290mV saturation voltage compared to 350-500mV in other substitutes, providing improved efficiency in high-current switching applications.

Q: Is package change from MPT3 to SOT-89 or PCP significant?

A: All substitute parts maintain TO-243AA package family classification with identical pin configuration and footprint compatibility. Package designation differences (MPT3, SOT-89, PCP) reflect manufacturer nomenclature for the same physical package. PCB layout and assembly processes remain unchanged.

Q: What inventory considerations apply to substitute selection?

A: The PBSS4350X,115 maintains the highest inventory level (55,300 pieces), followed by 2SD1624T-TD-E (19,388 pieces) and 2DC4672-13 (22,800 pieces). Inventory levels support long-term supply continuity for high-volume applications.

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