BCP54-QF Equivalent & Substitute Parts

Part Overview

The BCP54-QF is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the SOT-223 package. This active product operates at a maximum collector current of 1 A, collector-emitter breakdown voltage of 45 V, and maximum power dissipation of 650 mW. The device is qualified to AEC-Q101 automotive standards and is RoHS3 compliant. Substitute parts are identified when electrical parameters, mechanical packaging, and compliance certifications align with the original specification, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	1	A
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max)	500	mV @ 50mA, 500mA
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min	63	@ 150mA, 2V
Power - Max	650	mW
Frequency - Transition	180	MHz
Operating Temperature (TJ)	150	°C
Package / Case	TO-261-4, TO-261AA	—
Supplier Device Package	SOT-223	—
Mounting Type	Surface Mount	—
Grade	Automotive	—

Substitute Part Grouping Explanation

Substitute parts for the BCP54-QF are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

Transistor Type: NPN
Maximum Collector Current (Ic): 1 A
Collector-Emitter Breakdown Voltage: 45 V
Vce Saturation: 500 mV @ 50mA, 500mA
Collector Cutoff Current (ICBO): 100 nA
DC Current Gain (hFE): 63 minimum @ 150mA, 2V
Maximum Power Dissipation: 650 mW
Transition Frequency: 180 MHz
Operating Temperature: 150°C

Mechanical Parameters (Must Match):

Package Type: SOT-223
Mounting Type: Surface Mount
Case Code: TO-261-4, TO-261AA

Compliance & Certification:

RoHS3 Compliance
Automotive Grade
REACH Unaffected Status

The BCP54-10,135 meets all specified electrical and mechanical parameters and maintains automotive-grade qualification, establishing it as a parametric equivalent substitute.

Parameter Comparison

Parameter	BCP54-QF	BCP54-10,135	Match
Transistor Type	NPN	NPN	✓
Current - Collector (Ic) Max	1 A	1 A	✓
Voltage - Collector Emitter Breakdown (Max)	45 V	45 V	✓
Vce Saturation (Max)	500 mV @ 50mA, 500mA	500 mV @ 50mA, 500mA	✓
Current - Collector Cutoff (Max)	100 nA	100 nA	✓
DC Current Gain (hFE) Min	63 @ 150mA, 2V	63 @ 150mA, 2V	✓
Power - Max	650 mW	650 mW	✓
Frequency - Transition	180 MHz	180 MHz	✓
Operating Temperature (TJ)	150°C	150°C	✓
Package / Case	TO-261-4, TO-261AA	TO-261-4, TO-261AA	✓
Supplier Device Package	SOT-223	SOT-223	✓
Mounting Type	Surface Mount	Surface Mount	✓
Grade	Automotive	Automotive	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓

Engineering Selection Recommendations

The BCP54-10,135 is a direct parametric equivalent to the BCP54-QF. Both devices are manufactured by Nexperia USA Inc. and share identical electrical specifications across all critical parameters including collector current, breakdown voltage, saturation characteristics, current gain, power rating, and transition frequency. Both parts are housed in the SOT-223 surface mount package and maintain automotive-grade qualification with RoHS3 compliance and REACH unaffected status.

Selection between BCP54-QF and BCP54-10,135 may be based on inventory availability, lead time, or supply chain considerations, as both parts are functionally interchangeable in circuit applications. The BCP54-10,135 carries AEC-Q100 qualification, while the BCP54-QF carries AEC-Q101 qualification; both certifications are automotive-grade standards suitable for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can the BCP54-10,135 be used as a direct replacement for the BCP54-QF?

A: Yes. The BCP54-10,135 is a parametric equivalent substitute. All electrical parameters, including collector current, breakdown voltage, saturation voltage, current gain, power dissipation, and transition frequency are identical. Both devices use the SOT-223 surface mount package and are automotive-grade qualified.

Q: Are there any differences in package dimensions between these parts?

A: No. Both the BCP54-QF and BCP54-10,135 use the SOT-223 package with TO-261-4 and TO-261AA case codes. Pin configuration and physical dimensions are identical, enabling direct PCB footprint compatibility.

Q: What is the difference between AEC-Q101 and AEC-Q100 qualifications?

A: Both are automotive-grade qualifications. AEC-Q101 applies to discrete semiconductors, while AEC-Q100 applies to integrated circuits. For this transistor application, both certifications confirm suitability for automotive environments. The specific qualification difference does not affect functional equivalence.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the BCP54-QF and BCP54-10,135 are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What parameters must match for substitution eligibility?

A: Substitution requires matching of transistor type (NPN), maximum collector current (1 A), collector-emitter breakdown voltage (45 V), saturation voltage (500 mV), collector cutoff current (100 nA), DC current gain (63 minimum), power dissipation (650 mW), transition frequency (180 MHz), operating temperature (150°C), package type (SOT-223), and mounting method (surface mount). Compliance certifications must also align.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Yes. Both devices have identical transition frequency specifications of 180 MHz, supporting equivalent performance in high-frequency switching and amplification circuits.

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