BCX55-TP Equivalent & Substitute Parts

Part Overview

The BCX55-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose interface applications. This small-signal transistor operates at a maximum collector current of 1 A with a collector-emitter breakdown voltage of 60 V and a maximum power dissipation of 500 mW. The device is housed in a Surface Mount SOT-89 package and features a transition frequency of 130 MHz, making it suitable for moderate-frequency switching and amplification circuits.

The BCX55-TP maintains Active product status with 877 pieces currently in stock. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative sourcing strategies while maintaining functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) (Max)	1	A
Voltage - Collector Emitter Breakdown (Max)	60	V
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	63 @ 150mA, 2V	—
Power - Max	500	mW
Frequency - Transition	130	MHz
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
Supplier Device Package	SOT-89	—

Substitute Part Grouping Explanation

Substitution of the BCX55-TP is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN configuration required
Current - Collector (Ic) (Max): 1 A minimum
Voltage - Collector Emitter Breakdown (Max): 60 V minimum
Vce Saturation (Max) @ Ib, Ic: 500mV @ 50mA, 500mA maximum
Current - Collector Cutoff (Max): 100nA maximum
DC Current Gain (hFE) (Min) @ Ic, Vce: 63 @ 150mA, 2V minimum
Power - Max: 500 mW minimum
Frequency - Transition: 130 MHz minimum
Mounting Type: Surface Mount required
Package / Case: TO-243AA required
Supplier Device Package: SOT-89 or compatible variant

Substitute parts are grouped into two categories based on parameter alignment:

Category A - Full Parameter Match (60V Breakdown Voltage): Parts meeting or exceeding all primary criteria with 60 V collector-emitter breakdown voltage: BCX55-10,115, BCX5510TA, FCX491TA, PBSS4160XX.

Category B - Reduced Voltage Rating (45V-50V Breakdown Voltage): Parts meeting all primary criteria except collector-emitter breakdown voltage, rated at 45 V or 50 V: BCX54-16,115, BCX5410TA, 2SCR513PT100.

Parameter Comparison

Part Number	Manufacturer	Ic (Max)	Vce Breakdown (Max)	Vce Sat @ Ib, Ic	hFE (Min) @ Ic, Vce	Power (Max)	Frequency (Transition)	Operating Temp	Package
BCX55-TP	Micro Commercial Co	1 A	60 V	500mV @ 50mA, 500mA	63 @ 150mA, 2V	500 mW	130 MHz	-55 to 150°C	SOT-89
BCX55-10,115	NXP Semiconductors	1 A	60 V	500mV @ 50mA, 500mA	63 @ 150mA, 2V	1.25 W	180 MHz	-55 to 150°C	SOT-89
BCX54-16,115	Nexperia USA Inc.	1 A	45 V	500mV @ 50mA, 500mA	100 @ 150mA, 2V	1.25 W	180 MHz	-55 to 150°C	SOT-89
BCX5410TA	Diodes Incorporated	1 A	45 V	500mV @ 50mA, 500mA	63 @ 150mA, 2V	1 W	150 MHz	-65 to 150°C	SOT-89-3
BCX5510TA	Diodes Incorporated	1 A	60 V	500mV @ 50mA, 500mA	63 @ 150mA, 2V	1 W	150 MHz	-65 to 150°C	SOT-89-3
FCX491TA	Diodes Incorporated	1 A	60 V	500mV @ 100mA, 1A	100 @ 500mA, 5V	1 W	150 MHz	-65 to 150°C	SOT-89-3
2SCR513PT100	Rohm Semiconductor	1 A	50 V	350mV @ 25mA, 500mA	180 @ 50mA, 2V	2 W	360 MHz	-55 to 150°C	MPT3
PBSS4160XX	Nexperia USA Inc.	1 A	60 V	200mV @ 50mA, 500mA	170 @ 500mA, 10V	1.35 W	180 MHz	-55 to 150°C	SOT-89

Engineering Selection Recommendations

Category A Substitutes (60V Breakdown Voltage - Direct Voltage Rating Match):

BCX55-10,115 (NXP Semiconductors) provides direct electrical equivalence with identical collector-emitter breakdown voltage, saturation voltage, and current gain specifications. This part offers enhanced power dissipation (1.25 W versus 500 mW) and higher transition frequency (180 MHz versus 130 MHz), supporting applications requiring improved thermal performance and higher-frequency operation. RoHS3 compliance and unlimited moisture sensitivity level are confirmed.

BCX5510TA (Diodes Incorporated) maintains the 60 V breakdown voltage rating with identical saturation and current gain parameters. Extended operating temperature range (-65°C to 150°C) accommodates wider environmental conditions. Tape & Reel packaging and RoHS3 compliance are standard. Transition frequency of 150 MHz exceeds the BCX55-TP minimum requirement.

FCX491TA (Diodes Incorporated) operates at 60 V breakdown voltage with improved saturation voltage characteristics (200mV at higher current levels). This part demonstrates higher current gain (100 @ 500mA, 5V) and extended temperature range (-65°C to 150°C). RoHS3 compliance and Tape & Reel packaging are provided. Suitable for applications benefiting from lower saturation voltage and higher gain.

PBSS4160XX (Nexperia USA Inc.) is qualified to AEC-Q101 automotive standards and maintains 60 V breakdown voltage. Superior saturation voltage performance (200mV @ 50mA, 500mA) and elevated current gain (170 @ 500mA, 10V) are specified. Automotive-grade qualification supports applications requiring automotive-level reliability. Limited inventory (972 pieces) should be considered for long-term supply planning.

Category B Substitutes (45V-50V Breakdown Voltage - Reduced Voltage Rating):

BCX54-16,115 (Nexperia USA Inc.) operates at 45 V collector-emitter breakdown voltage, representing a 25% reduction from the BCX55-TP specification. All other electrical parameters meet or exceed requirements, with enhanced current gain (100 @ 150mA, 2V) and power dissipation (1.25 W). This substitute is appropriate for applications where the 45 V voltage rating is sufficient and where enhanced gain characteristics are beneficial. RoHS3 compliance and unlimited moisture sensitivity level are confirmed.

BCX5410TA (Diodes Incorporated) is rated at 45 V breakdown voltage with electrical parameters matching the BCX55-TP except for transition frequency (150 MHz versus 130 MHz minimum). Extended operating temperature range (-65°C to 150°C) and high inventory availability (145,210 pieces) support supply chain flexibility. RoHS3 compliance is confirmed.

2SCR513PT100 (Rohm Semiconductor) operates at 50 V breakdown voltage with significantly enhanced performance characteristics: transition frequency of 360 MHz, power dissipation of 2 W, and current gain of 180 @ 50mA, 2V. Improved saturation voltage (350mV @ 25mA, 500mA) provides superior switching performance. Package variant (MPT3) differs from SOT-89, requiring PCB layout verification. High inventory (3,200 pieces) and RoHS3 compliance are confirmed. This part is suitable for applications requiring enhanced frequency response and thermal performance within the 50 V voltage constraint.

Selection Criteria Summary:

For applications requiring strict adherence to 60 V breakdown voltage specification, Category A substitutes (BCX55-10,115, BCX5510TA, FCX491TA, PBSS4160XX) are appropriate. For applications where 45-50 V breakdown voltage is acceptable, Category B substitutes (BCX54-16,115, BCX5410TA, 2SCR513PT100) provide alternative sourcing with enhanced performance characteristics. Automotive applications requiring AEC-Q101 qualification should specify PBSS4160XX. Applications prioritizing high-frequency operation should consider 2SCR513PT100 or FCX491TA.

Frequently Asked Questions (FAQ)

Q: Can BCX54-16,115 be used as a direct replacement for BCX55-TP?

A: BCX54-16,115 is electrically compatible with BCX55-TP for applications where the collector-emitter breakdown voltage of 45 V is sufficient. The BCX55-TP is rated at 60 V, so BCX54-16,115 represents a 25% reduction in maximum voltage rating. All other electrical parameters (collector current, saturation voltage, current gain, power dissipation, and frequency response) meet or exceed BCX55-TP specifications. Circuit design must confirm that maximum operating voltages do not exceed 45 V.

Q: What is the difference between SOT-89 and SOT-89-3 packages?

A: Both SOT-89 and SOT-89-3 are Surface Mount packages with TO-243AA case designation. The primary difference is in supplier device package nomenclature. Parts specified as SOT-89-3 (BCX5410TA, BCX5510TA, FCX491TA) are functionally equivalent to SOT-89 variants (BCX55-TP, BCX55-10,115, PBSS4160XX) in terms of pin configuration and PCB footprint compatibility. Verification with component datasheets and PCB design files is required to confirm footprint alignment.

Q: Is 2SCR513PT100 compatible with BCX55-TP in terms of package?

A: 2SCR513PT100 uses an MPT3 package, which differs from the SOT-89 package of BCX55-TP. While both are Surface Mount packages with TO-243AA case designation, the MPT3 variant may have different pin spacing or lead configuration. PCB layout and footprint verification is required before substitution. The electrical parameters of 2SCR513PT100 exceed BCX55-TP specifications significantly (360 MHz transition frequency, 2 W power dissipation, 50 V breakdown voltage).

Q: Which substitute part has the lowest saturation voltage?

A: PBSS4160XX and FCX491TA both feature saturation voltage of 200mV @ 50mA, 500mA, compared to the BCX55-TP specification of 500mV @ 50mA, 500mA. This 60% reduction in saturation voltage results in lower power dissipation during saturation and improved switching efficiency. PBSS4160XX is automotive-qualified (AEC-Q101), while FCX491TA is general-purpose.

Q: What is the highest transition frequency available among substitute parts?

A: 2SCR513PT100 provides the highest transition frequency at 360 MHz, compared to the BCX55-TP specification of 130 MHz. This represents a 2.77x improvement in frequency response. BCX55-10,115 and PBSS4160XX both offer 180 MHz transition frequency. Enhanced frequency response supports higher-speed switching and amplification applications.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are confirmed RoHS3 compliant. The BCX55-TP does not specify RoHS status in the provided data. All substitute parts maintain REACH Unaffected status and EAR99 export classification.

Q: Which substitute part has the highest power dissipation rating?

A: 2SCR513PT100 is rated for 2 W maximum power dissipation, compared to the BCX55-TP specification of 500 mW. This represents a 4x improvement in thermal capacity. BCX55-10,115 and BCX54-16,115 both offer 1.25 W power dissipation. Enhanced power ratings support applications with higher current or switching losses.

Q: What is the operating temperature range of BCX55-TP compared to substitutes?

A: BCX55-TP operates from -55°C to 150°C. BCX55-10,115 and PBSS4160XX match this range. BCX54-16,115 and 2SCR513PT100 also operate from -55°C to 150°C. BCX5410TA, BCX5510TA, and FCX491TA extend the lower temperature limit to -65°C, providing 10°C additional cold-temperature capability. All parts support the upper temperature limit of 150°C.

Q: Can PBSS4160XX be used in non-automotive applications?

A: Yes. PBSS4160XX is automotive-qualified to AEC-Q101 but is not restricted to automotive use. The automotive qualification indicates enhanced reliability and process control. PBSS4160XX is suitable for general-purpose applications and provides superior saturation voltage performance (200mV) compared to BCX55-TP (500mV). Limited inventory (972 pieces) should be considered for supply planning.

Q: What inventory levels are available for each substitute part?

A: BCX5410TA has the highest inventory at 145,210 pieces. BCX55-10,115 has 63,200 pieces. 2SCR513PT100 has 3,200 pieces. FCX491TA has 43,314 pieces. BCX54-16,115 has 5,200 pieces. BCX5510TA has 12,763 pieces. PBSS4160XX has the lowest inventory at 972 pieces. The BCX55-TP has 877 pieces in stock.

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