2SD874A-R-TP Equivalent & Substitute Parts

Part Overview

The 2SD874A-R-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for surface mount applications in the SOT-89 package. This component operates at 50V collector-emitter breakdown voltage with a maximum collector current of 1A and 500mW power dissipation. The device is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, and thermal characteristics while accommodating packaging and availability constraints.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	1	A
Power - Max	500	mW
Frequency - Transition	200	MHz
Vce Saturation (Max) @ Ib, Ic	400mV @ 50mA, 500mA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 500mA, 10V	—
Current - Collector Cutoff (Max)	100	nA
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 2SD874A-R-TP is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN configuration required
Voltage Rating: Collector-emitter breakdown voltage must equal or exceed 50V
Current Rating: Maximum collector current must equal or exceed 1A
Power Dissipation: Maximum power rating must equal or exceed 500mW
Package Type: Surface mount TO-243AA (SOT-89 family) required
Mounting Configuration: Surface mount compatibility mandatory

Secondary Compatibility Parameters:

Operating temperature range must encompass the application requirements
RoHS3 compliance required for regulatory alignment
Moisture sensitivity level MSL 1 acceptable

Substitute parts are grouped based on voltage rating alignment: parts rated at 45V, 50V, and 60V represent distinct substitution categories. Parts with voltage ratings below 50V require circuit-level voltage derating analysis. Parts with voltage ratings at or above 50V provide direct substitution capability.

Parameter Comparison

Parameter	2SD874A-R-TP	2SCR513P5T100	BCX54-16,135	BCX5416TA	BCX55-16,115	BCX5516H6433XTMA1
Manufacturer	Micro Commercial Co	Rohm Semiconductor	Nexperia USA Inc.	Diodes Incorporated	Nexperia USA Inc.	Infineon Technologies
Product Status	Obsolete	Active	Active	Active	Active	Last Time Buy
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	50V	50V	45V	45V	60V	60V
Current - Collector (Ic) (Max)	1A	1A	1A	1A	1A	1A
Power - Max	500mW	500mW	1.25W	1W	1.25W	2W
Frequency - Transition	200MHz	360MHz	180MHz	150MHz	180MHz	100MHz
Vce Saturation (Max) @ Ib, Ic	400mV @ 50mA, 500mA	350mV @ 25mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 500mA, 10V	180 @ 50mA, 2V	100 @ 150mA, 2V	100 @ 150mA, 2V	100 @ 150mA, 2V	100 @ 150mA, 2V
Current - Collector Cutoff (Max)	100nA	1µA	100nA	100nA	100nA	100nA
Operating Temperature Range	-55 to 150°C	to 150°C	to 150°C	-65 to 150°C	to 150°C	to 150°C
Package / Case	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA
Supplier Device Package	SOT-89	MPT3	SOT-89	SOT-89-3	SOT-89	PG-SOT89
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Voltage-Matched Substitutes (50V Rating):

The 2SCR513P5T100 from Rohm Semiconductor provides the closest electrical alignment to the 2SD874A-R-TP. Both devices maintain a 50V collector-emitter breakdown voltage rating, matching the original specification exactly. The 2SCR513P5T100 is in active production status with 3300 units in stock, ensuring supply continuity. This part exhibits superior transition frequency (360MHz versus 200MHz) and lower saturation voltage (350mV versus 400mV), providing performance enhancement. The device is packaged in MPT3 configuration within the TO-243AA case family, maintaining mechanical compatibility. ROHS3 compliance and MSL 1 rating align with the original part specifications.

Higher Voltage-Rated Substitutes (60V Rating):

The BCX55-16,115 and BCX5516H6433XTMA1 both provide 60V collector-emitter breakdown ratings, exceeding the original 50V specification. These parts accommodate applications requiring enhanced voltage margin. The BCX55-16,115 from Nexperia USA Inc. is in active production with 245,100 units available, offering superior supply security. The BCX5516H6433XTMA1 from Infineon Technologies carries automotive qualification (AEC-Q101) and last-time-buy status, suitable for applications requiring automotive-grade components. Both devices provide increased power dissipation capability (1.25W and 2W respectively) compared to the original 500mW rating.

Lower Voltage-Rated Substitutes (45V Rating):

The BCX54-16,135 and BCX5416TA both operate at 45V collector-emitter breakdown voltage, below the original 50V specification. These parts require circuit-level voltage derating analysis to confirm suitability. The BCX54-16,135 from Nexperia USA Inc. provides 1.25W power dissipation with 6,553 units in stock. The BCX5416TA from Diodes Incorporated offers extended operating temperature range (-65 to 150°C) with 4,300 units available. Both devices are in active production status.

Selection Priority:

For direct replacement without circuit modification, the 2SCR513P5T100 is the primary recommendation due to exact voltage rating alignment and active production status. For applications requiring enhanced voltage margin or automotive qualification, the BCX55-16,115 or BCX5516H6433XTMA1 are appropriate selections. Lower voltage-rated parts (45V) require engineering evaluation of circuit voltage stress conditions.

Frequently Asked Questions (FAQ)

Q: Can the 2SCR513P5T100 directly replace the 2SD874A-R-TP without circuit modification?

A: Yes. The 2SCR513P5T100 maintains identical 50V collector-emitter breakdown voltage and 1A maximum collector current ratings. Both devices are packaged in TO-243AA surface mount configuration. The 2SCR513P5T100 provides superior performance characteristics including higher transition frequency (360MHz versus 200MHz) and lower saturation voltage (350mV versus 400mV). No circuit modification is required for direct substitution.

Q: What is the difference between the SOT-89 and MPT3 package designations?

A: SOT-89 and MPT3 are both supplier device package designations for the TO-243AA case family. These designations reflect different manufacturer packaging standards while maintaining identical mechanical and electrical interface characteristics. Both packages are compatible with standard SOT-89 footprints and mounting processes.

Q: Why are the BCX54-16,135 and BCX5416TA rated at 45V instead of 50V?

A: The BCX54-16,135 and BCX5416TA are designed for applications with lower voltage requirements. These parts provide 45V collector-emitter breakdown voltage, which is 5V below the original 2SD874A-R-TP specification. Applications operating at or near 50V require voltage derating analysis to confirm these parts are suitable. For circuits with voltage headroom below 45V, these parts provide direct substitution capability.

Q: What is the significance of the BCX5516H6433XTMA1 carrying AEC-Q101 qualification?

A: AEC-Q101 qualification indicates the BCX5516H6433XTMA1 meets automotive industry reliability and quality standards. This qualification is relevant only for applications requiring automotive-grade components. For non-automotive applications, this qualification provides no functional advantage. The part is currently in last-time-buy status, indicating limited future availability.

Q: How does the 2W power rating of the BCX5516H6433XTMA1 compare to the 500mW rating of the 2SD874A-R-TP?

A: The BCX5516H6433XTMA1 provides 2W maximum power dissipation, four times the original 500mW specification. This enhanced power rating allows operation in higher power applications or provides thermal margin in existing designs. The increased power capability does not affect electrical compatibility; circuits designed for 500mW operation remain fully compatible with this higher-rated device.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (2SCR513P5T100, BCX54-16,135, BCX5416TA, BCX55-16,115, and BCX5516H6433XTMA1) are ROHS3 compliant, matching the original 2SD874A-R-TP specification. All parts maintain MSL 1 (unlimited) moisture sensitivity level rating.

Q: Which substitute part offers the best supply availability?

A: The BCX55-16,115 from Nexperia USA Inc. provides the highest inventory level with 245,100 units in stock. This part is in active production status and offers 60V voltage rating with 1.25W power dissipation. The 2SCR513P5T100 provides the second-highest availability with 3,300 units and offers exact 50V voltage matching.

Q: Can I use a 60V-rated part in a circuit designed for 50V operation?

A: Yes. The BCX55-16,115 and BCX5516H6433XTMA1, both rated at 60V, can be used in circuits designed for 50V operation. The higher voltage rating provides additional voltage margin and does not affect circuit functionality. The device will operate identically to the original part under identical circuit conditions.

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