BCX54-10-TP Equivalent & Substitute Parts

Part Overview

The BCX54-10-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for surface mount applications in the SOT-89 package. This device operates at a maximum collector current of 1 A with a collector-emitter breakdown voltage of 45 V and a maximum power dissipation of 500 mW. The BCX54-10-TP is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	1	A
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max) @ Ib, Ic	500 mV @ 50 mA, 500 mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min @ Ic, Vce	63 @ 150 mA, 2 V	—
Power - Max	500	mW
Frequency - Transition	130	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
Supplier Device Package	SOT-89	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCX54-10-TP is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Transistor Type: NPN configuration required
Current - Collector (Ic) Max: Minimum 1 A
Voltage - Collector Emitter Breakdown: Minimum 45 V (higher voltage ratings are acceptable for applications not requiring exact voltage matching)
Power - Max: Minimum 500 mW
Vce Saturation: Equivalent or lower saturation voltage at specified base and collector currents
DC Current Gain (hFE): Minimum 63 at specified conditions (higher gain values are acceptable)
Frequency - Transition: Minimum 130 MHz (higher frequencies are acceptable)

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount required
Package / Case: TO-243AA (SOT-89 family packages)
Moisture Sensitivity Level: MSL 1 or equivalent

Compliance Criteria:

RoHS3 Compliance required
Product Status: Active status preferred for long-term availability

Substitute parts meeting all electrical minimum requirements and mechanical specifications are classified as direct equivalents. Parts exceeding electrical specifications remain functionally compatible within the design envelope.

Parameter Comparison

Parameter	BCX54-10-TP	BCX56-16-TP	2SCR513P5T100	BCX54-16,135	BCX5416TA	BCX55-16,115
Manufacturer	Micro Commercial Co	Micro Commercial Co	Rohm Semiconductor	Nexperia USA Inc.	Diodes Incorporated	Nexperia USA Inc.
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Current - Collector (Ic) Max	1 A	1 A	1 A	1 A	1 A	1 A
Voltage - Collector Emitter Breakdown (Max)	45 V	80 V	50 V	45 V	45 V	60 V
Vce Saturation (Max) @ Ib, Ic	500 mV @ 50 mA, 500 mA	500 mV @ 50 mA, 500 mA	350 mV @ 25 mA, 500 mA	500 mV @ 50 mA, 500 mA	500 mV @ 50 mA, 500 mA	500 mV @ 50 mA, 500 mA
Current - Collector Cutoff (Max)	100 nA	100 nA	1 µA	100 nA	100 nA	100 nA
DC Current Gain (hFE) Min @ Ic, Vce	63 @ 150 mA, 2 V	100 @ 150 mA, 2 V	180 @ 50 mA, 2 V	100 @ 150 mA, 2 V	100 @ 150 mA, 2 V	100 @ 150 mA, 2 V
Power - Max	500 mW	500 mW	500 mW	1.25 W	1 W	1.25 W
Frequency - Transition	130 MHz	130 MHz	360 MHz	180 MHz	150 MHz	180 MHz
Operating Temperature (TJ)	150 °C	150 °C	150 °C	150 °C	-65 to 150 °C	150 °C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA
Supplier Device Package	SOT-89	SOT-89	MPT3	SOT-89	SOT-89-3	SOT-89
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)
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

BCX54-16,135 (Nexperia USA Inc.)

The BCX54-16,135 provides the closest electrical match to the BCX54-10-TP with identical voltage and current ratings at 45 V and 1 A respectively. This part maintains the same base product number (BCX54) and offers enhanced power dissipation capability at 1.25 W compared to the original 500 mW specification. The device is in active production status with ROHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory compliance. The increased DC current gain (100 vs. 63) and higher transition frequency (180 MHz vs. 130 MHz) provide performance headroom without introducing incompatibility.

BCX5416TA (Diodes Incorporated)

The BCX5416TA maintains identical electrical specifications for voltage (45 V), current (1 A), and saturation characteristics. This part offers extended operating temperature range (-65°C to 150°C) compared to the original specification (150°C maximum), providing thermal margin for applications with lower ambient temperature requirements. Active product status and ROHS3 compliance support production continuity. Power dissipation is rated at 1 W, exceeding the original 500 mW specification.

BCX55-16,115 (Nexperia USA Inc.)

The BCX55-16,115 operates at 60 V collector-emitter breakdown voltage, exceeding the original 45 V specification. This higher voltage rating accommodates applications requiring additional voltage margin. The device maintains 1 A collector current and equivalent saturation characteristics. Enhanced power dissipation (1.25 W) and transition frequency (180 MHz) provide performance improvements. Active production status and extensive inventory availability (245,100 pieces) support supply chain continuity.

BCX56-16-TP (Micro Commercial Co)

The BCX56-16-TP is manufactured by the same original equipment manufacturer (Micro Commercial Co) and operates at 80 V collector-emitter breakdown voltage with 1 A collector current. This part maintains the same package specification (SOT-89) and offers the highest voltage rating among available substitutes. Active product status ensures ongoing availability. The increased voltage rating accommodates designs requiring maximum voltage headroom.

2SCR513P5T100 (Rohm Semiconductor)

The 2SCR513P5T100 meets the minimum electrical requirements with 50 V collector-emitter breakdown voltage and 1 A collector current. This part features the highest transition frequency (360 MHz) and superior DC current gain (180 at 50 mA), supporting high-speed switching applications. The lower saturation voltage (350 mV at 25 mA, 500 mA) reduces power dissipation in saturated switching modes. Active production status and high inventory availability (3,300 pieces) support supply chain requirements. The MPT3 package variant maintains TO-243AA case compatibility.

Frequently Asked Questions (FAQ)

Q: Can the BCX54-10-TP be directly replaced with any of the listed substitute parts?

A: Direct replacement is possible only when the application circuit does not depend on the specific electrical characteristics of the original part. The BCX54-16,135 provides the closest electrical match with identical voltage and current ratings. Other substitutes introduce variations in voltage rating, power dissipation, or frequency response that must be evaluated against circuit requirements.

Q: What is the primary difference between the BCX54-10-TP and BCX54-16,135?

A: Both parts share the same base product number (BCX54) and identical voltage (45 V) and current (1 A) ratings. The BCX54-16,135 offers higher power dissipation (1.25 W vs. 500 mW), increased DC current gain (100 vs. 63), and higher transition frequency (180 MHz vs. 130 MHz). The BCX54-16,135 is in active production, whereas the BCX54-10-TP is obsolete.

Q: Are all substitute parts available in the same SOT-89 package?

A: Five of the six substitute parts are available in SOT-89 package variants (BCX56-16-TP, BCX54-16,135, BCX5416TA, BCX55-16,115). The 2SCR513P5T100 uses the MPT3 package variant, which maintains TO-243AA case compatibility and identical pin configuration for surface mount applications.

Q: Which substitute part offers the best performance for high-frequency applications?

A: The 2SCR513P5T100 provides the highest transition frequency at 360 MHz, compared to 130 MHz for the original BCX54-10-TP. This part is suitable for applications requiring enhanced switching speed. The BCX54-16,135 and BCX55-16,115 offer intermediate frequency performance at 180 MHz.

Q: What is the significance of the higher voltage ratings in BCX56-16-TP and BCX55-16,115?

A: The BCX56-16-TP operates at 80 V and BCX55-16,115 at 60 V collector-emitter breakdown voltage, compared to 45 V for the original part. These higher ratings provide additional voltage margin for applications subject to transient overvoltage conditions or designs requiring maximum voltage headroom. The higher voltage rating does not affect compatibility in circuits designed for 45 V operation.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. The BCX54-16,135, BCX5416TA, and BCX55-16,115 also carry REACH unaffected designation, confirming compliance with additional regulatory requirements.

Q: What inventory considerations should guide part selection?

A: The BCX55-16,115 offers the highest inventory availability at 245,100 pieces, followed by BCX5416TA at 4,300 pieces and BCX54-16,135 at 6,553 pieces. The 2SCR513P5T100 provides 3,300 pieces. BCX56-16-TP inventory is 752 pieces. Inventory levels support long-term production requirements for all listed substitutes.

Q: Can the BCX54-10-TP be used interchangeably with BCX56-16-TP in existing designs?

A: Interchangeability depends on circuit voltage requirements. The BCX56-16-TP operates at 80 V collector-emitter breakdown voltage, which is compatible with circuits designed for 45 V operation. However, the higher voltage rating introduces different electrical characteristics that may affect circuit performance in applications sensitive to transistor parameters such as saturation voltage or frequency response.

Q: What is the difference between Cut Tape and Tape & Reel packaging options?

A: Cut Tape (CT) & Digi-Reel packaging is suitable for lower-volume applications and manual assembly processes. Tape & Reel (TR) packaging is optimized for high-volume automated assembly. Both packaging formats maintain identical electrical and mechanical specifications. Selection depends on production volume and assembly equipment compatibility.

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