BCP54-16,135 Equivalent & Substitute Parts

Part Overview

The BCP54-16,135 is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for general-purpose switching and amplification applications. This Surface Mount device in SOT-223 packaging operates at maximum collector current of 1 A and collector-emitter breakdown voltage of 45 V, with a maximum power dissipation of 960 mW. The part is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching or exceeding critical electrical parameters while maintaining compatible mechanical packaging and thermal characteristics.

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 (ICBO)
DC Current Gain (hFE) Min	100	@ 150mA, 2V
Power - Max	960	mW
Frequency - Transition	180	MHz
Operating Temperature (TJ)	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	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BCP54-16,135 are classified into three categories based on electrical parameter alignment:

Parametric Equivalent (Direct Replacement): Parts matching all critical electrical specifications including collector current (1 A), collector-emitter breakdown voltage (45 V), saturation voltage (500 mV), DC current gain (100 minimum), and transition frequency (180 MHz). These parts differ only in packaging format (Cut Tape vs. Tape & Reel) and are sourced from the same manufacturer.

Direct Manufacturer Equivalent (Functional Substitute): Parts with identical or superior electrical ratings from alternative manufacturers. These devices maintain the 45 V breakdown voltage and 1 A collector current specifications but may feature enhanced power dissipation (2 W vs. 960 mW) or different transition frequencies (100–150 MHz). All maintain SOT-223 surface mount packaging and TO-261-4/TO-261AA case compatibility.

Similar Performance Alternative (Application-Dependent Substitute): Parts with comparable but not identical electrical characteristics. These include devices with higher collector current ratings (1.5 A, 3 A, 5 A), lower breakdown voltages (40 V), or different DC current gain specifications. Selection requires circuit-level analysis to confirm suitability.

Critical Substitution Parameters:

Collector-Emitter Breakdown Voltage (VCEO): Minimum 45 V
Maximum Collector Current (Ic): Minimum 1 A
Saturation Voltage (Vce Sat): Maximum 500 mV @ specified conditions
DC Current Gain (hFE): Minimum 40 (preferred 100+)
Power Dissipation: Minimum 960 mW
Package: SOT-223 Surface Mount (TO-261-4, TO-261AA)
Compliance: RoHS3, MSL Level 1

Parameter Comparison

Manufacturer Part Number	Manufacturer	Ic (Max) A	VCEO (Max) V	Vce Sat (Max) mV	hFE (Min)	Power (Max) mW	fT (MHz)	Package	Product Status
BCP54-16,135	Nexperia USA Inc.	1	45	500	100	960	180	SOT-223	Active
BCP54-16,115	Nexperia USA Inc.	1	45	500	100	960	180	SOT-223	Active
BCP5416H6433XTMA1	Infineon Technologies	1	45	500	100	2000	100	SOT-223	Last Time Buy
BCP5416TA	Diodes Incorporated	1	45	500	100	2000	150	SOT-223	Active
BCP54	onsemi	1.5	45	500	40	1500	—	SOT-223	Active
BCP5410TA	Diodes Incorporated	1	45	500	63	2000	150	SOT-223	Active
BCP5416H6327XTSA1	Infineon Technologies	1	45	500	100	2000	100	SOT-223	Last Time Buy
BCP54H6327XTSA1	Infineon Technologies	1	45	500	40	2000	100	SOT-223	Last Time Buy
BCP54TA	Diodes Incorporated	1	45	500	40	2000	150	SOT-223	Active
FZT1051ATA	Diodes Incorporated	5	40	340	270	2500	155	SOT-223	Active
NJT4031NT1G	onsemi	3	40	300	200	2000	215	SOT-223	Active

Engineering Selection Recommendations

Recommended Direct Replacement:

BCP54-16,115 (Nexperia USA Inc.) is the optimal parametric equivalent. This part maintains identical electrical specifications to the BCP54-16,135 across all critical parameters: 1 A collector current, 45 V breakdown voltage, 500 mV saturation voltage, 100 minimum DC current gain, and 180 MHz transition frequency. The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect electrical performance. Both parts are Active status with RoHS3 compliance and unlimited moisture sensitivity rating. Inventory availability is significantly higher for BCP54-16,115 (33,330 units vs. 1,178 units).

Recommended Active Alternatives (Functional Substitutes):

BCP5416TA (Diodes Incorporated) and BCP54TA (Diodes Incorporated) are Active-status alternatives meeting all critical electrical requirements. Both maintain 1 A collector current, 45 V breakdown voltage, and 500 mV saturation voltage specifications. BCP5416TA provides 150 MHz transition frequency with 100 minimum DC current gain, while BCP54TA offers 150 MHz transition frequency with 40 minimum DC current gain. Both feature enhanced power dissipation (2 W vs. 960 mW) and extended operating temperature range (-55°C to 150°C). These parts are suitable for direct substitution in applications where the original part is unavailable.

Not Recommended for Direct Substitution:

Infineon Technologies parts (BCP5416H6433XTMA1, BCP5416H6327XTSA1, BCP54H6327XTSA1) are classified as Last Time Buy, indicating discontinued product lines with no long-term availability. While electrically compatible, these parts should not be selected for new designs or long-term production requirements.

FZT1051ATA (Diodes Incorporated) and NJT4031NT1G (onsemi) feature reduced collector-emitter breakdown voltage (40 V vs. 45 V), which may not meet circuit requirements designed for 45 V operation. These parts are suitable only when circuit analysis confirms operation within 40 V maximum ratings.

Frequently Asked Questions (FAQ)

Q: Can BCP54-16,115 be used as a direct replacement for BCP54-16,135?

A: Yes. BCP54-16,115 is a parametric equivalent with identical electrical specifications. The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect electrical performance or circuit compatibility. Both parts are manufactured by Nexperia USA Inc. and maintain identical ratings for collector current, breakdown voltage, saturation voltage, DC current gain, and transition frequency.

Q: What is the difference between the Infineon and Diodes Incorporated alternatives?

A: Both manufacturers offer SOT-223 packaged NPN transistors with 45 V breakdown voltage and 1 A collector current ratings. Infineon parts (BCP5416H6433XTMA1, BCP5416H6327XTSA1) feature 100 MHz transition frequency and are classified as Last Time Buy. Diodes Incorporated parts (BCP5416TA, BCP54TA) feature 150 MHz transition frequency and are Active status. Diodes Incorporated alternatives are preferred for new designs due to active product status and higher transition frequency.

Q: Can FZT1051ATA or NJT4031NT1G replace the BCP54-16,135?

A: These parts are not recommended as direct replacements. FZT1051ATA and NJT4031NT1G feature reduced collector-emitter breakdown voltage (40 V vs. 45 V). Substitution is only acceptable if circuit analysis confirms that maximum operating voltage does not exceed 40 V. FZT1051ATA offers higher collector current (5 A) and lower saturation voltage (340 mV), while NJT4031NT1G offers higher collector current (3 A) and higher transition frequency (215 MHz). These characteristics may be beneficial in specific applications but require circuit-level verification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the BCP54-16,135. All parts are suitable for applications requiring RoHS3 certification.

Q: What is the significance of "Last Time Buy" status for Infineon parts?

A: Last Time Buy status indicates that the manufacturer has discontinued the product line and will not accept new orders after a specified date. Existing inventory may be available, but long-term supply cannot be guaranteed. For new designs or production quantities requiring multi-year availability, Active-status alternatives from Diodes Incorporated or onsemi are recommended.

Q: Does the SOT-223 package differ between manufacturers?

A: All substitute parts use SOT-223 surface mount packaging with TO-261-4 or TO-261AA case designation. Package dimensions and pin configurations are standardized across manufacturers, ensuring mechanical and electrical compatibility on printed circuit boards. Supplier device package designations may vary (SOT-223, SOT-223-3, SOT-223-4, PG-SOT223-4), but these refer to the same physical package with identical footprints.

Q: What is the impact of different DC current gain (hFE) specifications?

A: DC current gain (hFE) determines the base current required to achieve a specified collector current. The BCP54-16,135 specifies minimum hFE of 100 at 150 mA collector current and 2 V collector-emitter voltage. Alternatives with lower hFE (40–63) require proportionally higher base current to achieve the same collector current. Alternatives with higher hFE (200–270) require lower base current. Circuit designs using fixed base resistor values may require adjustment if substituting parts with significantly different hFE specifications.

Q: Can the onsemi BCP54 be used as a substitute?

A: The onsemi BCP54 is a similar alternative with higher collector current rating (1.5 A vs. 1 A) and higher power dissipation (1.5 W vs. 960 mW). However, it features lower DC current gain (40 vs. 100 minimum) and lacks specified transition frequency. This part is suitable for applications requiring higher current capacity but may require circuit analysis to confirm compatibility with base drive requirements and frequency response specifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message