BCP54-10-TP Equivalent & Substitute Parts

Part Overview

The BCP54-10-TP is a Surface Mount NPN Bipolar Junction Transistor manufactured by Micro Commercial Co, rated for 45V collector-emitter breakdown voltage and 1A maximum collector current in a SOT-223 package. This device is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. Equivalent parts maintain identical or superior electrical specifications within the same package footprint, enabling direct replacement in existing circuit designs.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	45	V
Current - Collector (Ic) (Max)	1	A
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	1.5	W
Frequency - Transition	100	MHz
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-261-4, TO-261AA	—
Supplier Device Package	SOT-223	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BCP54-10-TP are classified based on electrical parameter compatibility within the NPN BJT category. The primary substitution criteria are:

Critical Parameters for Substitution:

Transistor Type: NPN (required match)
Voltage - Collector Emitter Breakdown: Equal to or greater than 45V
Current - Collector (Ic) (Max): Equal to or greater than 1A
Vce Saturation: Equal to or less than 500mV @ specified base and collector currents
Current - Collector Cutoff: Equal to or less than 100nA
DC Current Gain (hFE): Equal to or greater than 63 @ 150mA, 2V
Power - Max: Equal to or greater than 1.5W
Frequency - Transition: Equal to or greater than 100MHz
Operating Temperature Range: Minimum -55°C to maximum 150°C
Package / Case: TO-261-4 or TO-261AA (SOT-223 footprint)

Substitute parts are grouped into two categories: Direct Equivalents (matching all critical parameters) and Parametric Equivalents (exceeding specifications in one or more parameters while maintaining functional compatibility).

Parameter Comparison

Parameter	BCP54-10-TP (Main)	BCP56-16-TP	BCP54,115	FZT491ATA	GSBCP54-16
Manufacturer	Micro Commercial Co	Micro Commercial Co	Nexperia USA Inc.	Diodes Incorporated	Good-Ark Semiconductor
Transistor Type	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	45V	80V	45V	40V	45V
Current - Collector (Ic) (Max)	1A	1A	1A	1A	1A
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 100mA, 1A	500mV @ 50mA, 500mA
Current - Collector Cutoff (Max)	100nA	100nA	100nA	100nA	100nA
DC Current Gain (hFE) (Min) @ Ic, Vce	63 @ 150mA, 2V	63 @ 150mA, 2V	63 @ 150mA, 2V	300 @ 500mA, 5V	63 @ 150mA, 2V
Power - Max	1.5W	1.5W	960mW	2W	1.5W
Frequency - Transition	100MHz	100MHz	180MHz	150MHz	100MHz
Operating Temperature	-55 to 150°C	-55 to 150°C	150°C (Max)	-55 to 150°C	Not specified
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-261-4, TO-261AA	TO-261-4, TO-261AA	TO-261-4, TO-261AA	TO-261-4, TO-261AA	TO-261-4, TO-261AA
Supplier Device Package	SOT-223	SOT-223	SOT-223	SOT-223-3	SOT-223
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

BCP54,115 (Nexperia USA Inc.)

The BCP54,115 is a direct parametric equivalent manufactured by Nexperia USA Inc. with Active product status. This part maintains identical voltage and current ratings (45V, 1A) and matching saturation characteristics. The transition frequency is enhanced at 180MHz compared to the 100MHz specification of the main part. Power dissipation is rated at 960mW, which is within acceptable tolerance for most applications designed for the 1.5W main part. Operating temperature range is specified to 150°C maximum. ROHS3 compliance and MSL 1 rating ensure environmental and handling compatibility. This part is suitable for direct substitution in designs where the enhanced frequency response does not introduce circuit instability.

BCP56-16-TP (Micro Commercial Co)

The BCP56-16-TP is manufactured by the same supplier as the main part and maintains Active product status. This part exceeds the voltage specification at 80V collector-emitter breakdown, providing enhanced voltage margin for applications operating near the 45V limit. Current, saturation, and gain specifications are identical to the main part. Transition frequency and power dissipation match the main part exactly at 100MHz and 1.5W. Operating temperature range is identical at -55°C to 150°C. ROHS3 compliance and MSL 1 rating are maintained. This part is suitable for substitution in applications where higher voltage headroom is beneficial.

GSBCP54-16 (Good-Ark Semiconductor)

The GSBCP54-16 is a parametric equivalent manufactured by Good-Ark Semiconductor with Active product status. Electrical specifications match the main part across voltage (45V), current (1A), saturation (500mV @ 50mA, 500mA), and gain (63 @ 150mA, 2V) parameters. Transition frequency and power dissipation are identical at 100MHz and 1.5W. Operating temperature range is not specified in available documentation. ROHS3 compliance and MSL 1 rating are confirmed. This part is suitable for substitution where operating temperature specification is not a critical design constraint.

FZT491ATA (Diodes Incorporated)

The FZT491ATA is a parametric equivalent manufactured by Diodes Incorporated with Active product status. This part operates at a lower voltage rating of 40V, which is below the 45V specification of the main part and may not be suitable for applications requiring the full 45V margin. However, the part exceeds specifications in current handling at 1A with saturation measured at higher base and collector currents (500mV @ 100mA, 1A). Power dissipation is enhanced at 2W, and transition frequency is increased to 150MHz. DC current gain is significantly higher at 300 @ 500mA, 5V. Operating temperature range matches the main part at -55°C to 150°C. ROHS3 compliance and MSL 1 rating are maintained. This part is suitable for substitution only in applications where the 40V voltage rating is sufficient and the enhanced current gain does not introduce circuit performance issues.

Frequently Asked Questions (FAQ)

Q: Can the BCP54,115 be used as a direct replacement for the BCP54-10-TP?

A: The BCP54,115 is a direct parametric equivalent with matching voltage (45V) and current (1A) ratings, identical saturation characteristics, and equivalent operating temperature range. The enhanced transition frequency (180MHz vs. 100MHz) and slightly reduced power rating (960mW vs. 1.5W) are within acceptable tolerance for most applications. Direct substitution is supported from an electrical standpoint, provided the circuit design does not depend on the specific 100MHz frequency response.

Q: What is the primary difference between the BCP56-16-TP and the BCP54-10-TP?

A: The BCP56-16-TP maintains identical electrical specifications to the BCP54-10-TP except for the collector-emitter breakdown voltage, which is rated at 80V compared to 45V. This higher voltage rating provides additional safety margin in applications operating near the maximum voltage specification. All other parameters, including current, saturation, gain, frequency, and power dissipation, are identical.

Q: Is the FZT491ATA suitable for all applications using the BCP54-10-TP?

A: The FZT491ATA has a lower collector-emitter breakdown voltage rating of 40V, which is 5V below the main part specification. This part is suitable only for applications where the circuit voltage does not exceed 40V. The enhanced power dissipation (2W) and current gain (300) may introduce circuit behavior changes in designs optimized for the original specifications.

Q: Are all substitute parts available in the same SOT-223 package?

A: All substitute parts are available in SOT-223 package format with TO-261-4 or TO-261AA case designations, ensuring mechanical and thermal compatibility with the original BCP54-10-TP. The FZT491ATA is designated as SOT-223-3, which maintains the same footprint and pin configuration.

Q: What is the significance of the Active product status for substitute parts?

A: Active product status indicates that the substitute part is currently manufactured and available through distribution channels. The BCP54-10-TP is classified as Obsolete, meaning it is no longer in production. Selecting substitute parts with Active status ensures long-term availability and supply chain continuity for production and maintenance requirements.

Q: Do all substitute parts meet RoHS3 compliance?

A: All substitute parts listed are ROHS3 compliant, matching the environmental compliance status of the main part. Moisture Sensitivity Level (MSL) is rated at 1 (Unlimited) for all parts, indicating no moisture sensitivity restrictions during storage and handling.

Q: Can the GSBCP54-16 be used in applications requiring a specified operating temperature range?

A: The GSBCP54-16 does not have an operating temperature range specified in available documentation. The main part and most substitute parts are rated for -55°C to 150°C. Applications with specific temperature requirements should confirm compatibility with the GSBCP54-16 manufacturer before substitution.

Q: What parameters should be verified when selecting a substitute part?

A: Critical parameters for substitution verification include collector-emitter breakdown voltage (must equal or exceed 45V), maximum collector current (must equal or exceed 1A), saturation voltage (must not exceed 500mV at specified conditions), DC current gain (must equal or exceed 63 @ 150mA, 2V), and operating temperature range (must encompass application requirements). Package compatibility (SOT-223) and compliance certifications (ROHS3, MSL 1) must also be confirmed.

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