BCX54-TP Equivalent & Substitute Parts

Part Overview

The BCX54-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This surface mount device operates at a maximum collector current of 1 A and collector-emitter breakdown voltage of 45 V, with a transition frequency of 130 MHz and maximum power dissipation of 500 mW. The part is currently active in production with 897 pieces in stock. Substitute parts are identified to address inventory availability, packaging preferences, or enhanced electrical performance characteristics within compatible parameter ranges.

Key Parameters

Parameter	BCX54-TP Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	1	A
Voltage - Collector Emitter Breakdown (Max)	45	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 Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
Supplier Device Package	SOT-89	—

Substitute Part Grouping Explanation

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

Mandatory Compatibility Criteria:

Transistor Type: NPN configuration required
Current - Collector (Ic) Max: 1 A minimum
Voltage - Collector Emitter Breakdown: 45 V or greater
Vce Saturation: 500mV @ 50mA, 500mA specification
Current - Collector Cutoff: 100nA or lower
Mounting Type: Surface Mount
Package / Case: TO-243AA
Supplier Device Package: SOT-89 or SOT-89-3 variant

Performance Enhancement Parameters (Acceptable to Exceed):

Power - Max: 500 mW or greater
Frequency - Transition: 130 MHz or greater
DC Current Gain (hFE): 63 or greater at specified conditions
Operating Temperature Range: -55°C minimum to 150°C maximum or wider

All identified substitute parts meet or exceed the mandatory compatibility criteria while maintaining identical mechanical form factor and electrical interface characteristics.

Parameter Comparison

Parameter	BCX54-TP	BCX54-10,115	BCX54TA	BCX55-16,135	BCX55TA	Unit
Manufacturer	Micro Commercial Co	Nexperia USA Inc.	Diodes Incorporated	Nexperia USA Inc.	Diodes Incorporated	—
Transistor Type	NPN	NPN	NPN	NPN	NPN	—
Current - Collector (Ic) Max	1	1	1	1	1	A
Voltage - Collector Emitter Breakdown (Max)	45	45	45	60	60	V
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	—
Current - Collector Cutoff (Max)	100	100	100	100	100	nA
DC Current Gain (hFE) Min @ Ic, Vce	63 @ 150mA, 2V	63 @ 150mA, 2V	40 @ 150mA, 2V	100 @ 150mA, 2V	40 @ 150mA, 2V	—
Power - Max	500	1.25	1	1.25	1	mW
Frequency - Transition	130	180	150	180	150	MHz
Operating Temperature Range	-55 to 150	to 150	-65 to 150	to 150	-65 to 150	°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	—
Package / Case	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA	—
Supplier Device Package	SOT-89	SOT-89	SOT-89-3	SOT-89	SOT-89-3	—
Product Status	Active	Active	Active	Active	Active	—
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	—
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99	—

Engineering Selection Recommendations

All identified substitute parts maintain active product status and REACH compliance equivalent to the BCX54-TP. Selection among substitute options is based on specific application requirements and availability constraints:

BCX54-10,115 (Nexperia USA Inc.): Maintains identical electrical specifications to the BCX54-TP with 45 V collector-emitter breakdown voltage and 1 A maximum collector current. Offers enhanced power dissipation capability at 1.25 W and increased transition frequency at 180 MHz. Available in Tape & Reel packaging with 18,300 pieces in stock. RoHS3 compliant with MSL 1 rating.

BCX54TA (Diodes Incorporated): Provides equivalent 45 V and 1 A ratings with 150 MHz transition frequency and 1 W power dissipation. Extends operating temperature range to -65°C minimum. Available in Tape & Reel and Digi-Reel packaging with 8,100 pieces in stock. RoHS3 compliant with MSL 1 rating. DC current gain minimum of 40 at specified conditions.

BCX55-16,135 (Nexperia USA Inc.): Increases collector-emitter breakdown voltage to 60 V while maintaining 1 A maximum collector current. Delivers 1.25 W power dissipation and 180 MHz transition frequency. Provides higher DC current gain at 100 minimum. Available in Tape & Reel packaging with 5,469 pieces in stock. RoHS3 compliant with MSL 1 rating.

BCX55TA (Diodes Incorporated): Increases collector-emitter breakdown voltage to 60 V with 1 A maximum collector current. Extends operating temperature range to -65°C minimum. Provides 150 MHz transition frequency and 1 W power dissipation. Available in Cut Tape and Digi-Reel packaging with 189,100 pieces in stock. RoHS3 compliant with MSL 1 rating. DC current gain minimum of 40 at specified conditions.

Frequently Asked Questions (FAQ)

Q: Can BCX54-10,115 directly replace BCX54-TP in all applications?

A: BCX54-10,115 maintains identical electrical specifications for collector current, collector-emitter breakdown voltage, and saturation characteristics. The substitute provides enhanced power dissipation (1.25 W versus 500 mW) and higher transition frequency (180 MHz versus 130 MHz). Both devices use TO-243AA package with SOT-89 supplier device package. Direct substitution is electrically compatible.

Q: What is the difference between BCX54TA and BCX55TA?

A: BCX54TA operates at 45 V collector-emitter breakdown voltage, while BCX55TA operates at 60 V. Both devices share identical 1 A maximum collector current, saturation characteristics, and operating temperature range of -65°C to 150°C. BCX55TA provides higher voltage margin for applications requiring greater headroom. Both use SOT-89-3 supplier device package variant.

Q: Are there packaging differences between substitute options?

A: BCX54-10,115 and BCX55-16,135 are supplied in Tape & Reel packaging. BCX54TA and BCX55TA are supplied in Cut Tape and Digi-Reel packaging. All devices use identical TO-243AA package and SOT-89 or SOT-89-3 supplier device package. Packaging format does not affect electrical or mechanical compatibility.

Q: Which substitute offers the highest power dissipation capability?

A: BCX54-10,115 and BCX55-16,135 both provide 1.25 W maximum power dissipation, compared to 500 mW for BCX54-TP. BCX54TA and BCX55TA provide 1 W maximum power dissipation. Selection depends on thermal management requirements of the specific application.

Q: Do all substitutes maintain the same DC current gain specification?

A: BCX54-10,115 maintains the BCX54-TP specification of 63 minimum hFE at 150mA and 2V. BCX54TA and BCX55TA specify 40 minimum hFE at the same conditions. BCX55-16,135 specifies 100 minimum hFE. Applications sensitive to current gain variation require evaluation of the specific substitute selected.

Q: Are all substitute parts RoHS compliant?

A: All identified substitute parts are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts maintain REACH Unaffected status and EAR99 export classification equivalent to the BCX54-TP.

Q: What is the inventory availability for each substitute?

A: BCX54-TP: 897 pieces. BCX54-10,115: 18,300 pieces. BCX54TA: 8,100 pieces. BCX55-16,135: 5,469 pieces. BCX55TA: 189,100 pieces. Inventory levels support component selection based on supply chain requirements.

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