BCP55-16F Equivalent & Substitute Parts

Part Overview

The BCP55-16F is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., rated for 60V collector-emitter breakdown voltage and 1A maximum collector current. This surface mount device in SOT-223 packaging is designed for general-purpose switching and amplification applications with a maximum power dissipation of 650mW and transition frequency of 100MHz. The part is currently Active in product status with 5026 units in stock. Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives with different electrical ratings.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	1	A
Power - Max	650	mW
Frequency - Transition	100	MHz
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 150mA, 2V	—
Current - Collector Cutoff (Max)	100	nA
Operating Temperature (Max)	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

Substitution of the BCP55-16F is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Transistor Type: Must be NPN
Voltage - Collector Emitter Breakdown: Must be greater than or equal to 60V
Current - Collector (Max): Must be greater than or equal to 1A
Vce Saturation: Must be compatible at specified base and collector currents
DC Current Gain (hFE): Must meet or exceed minimum specifications
Frequency - Transition: Must support required switching speeds

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount required
Package / Case: TO-261-4 or TO-261AA compatible
Supplier Device Package: SOT-223 or equivalent footprint

Compliance Requirements:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
REACH Unaffected status

Substitute parts are grouped based on whether they meet all electrical requirements while maintaining mechanical and thermal compatibility. Parts with lower voltage ratings or reduced current capacity are listed as conditional substitutes only when application requirements permit derating.

Parameter Comparison

Parameter	BCP55-16F (Main)	BCP55H6327XTSA1	BCP5416H6433XTMA1	BCP5416TA	FZT491ATA	FZT491TA
Manufacturer	Nexperia USA Inc.	Infineon Technologies	Infineon Technologies	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	60V	60V	45V	45V	40V	60V
Current - Collector (Ic) (Max)	1A	1A	1A	1A	1A	1A
Power - Max	650mW	2W	2W	2W	2W	2W
Frequency - Transition	100MHz	100MHz	100MHz	150MHz	150MHz	150MHz
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 100mA, 1A	500mV @ 100mA, 1A
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 150mA, 2V	40 @ 150mA, 2V	100 @ 150mA, 2V	100 @ 150mA, 2V	300 @ 500mA, 5V	100 @ 500mA, 5V
Current - Collector Cutoff (Max)	100nA	100nA	100nA	100nA	100nA	100nA
Operating Temperature (Max)	150°C	150°C	150°C	150°C	150°C	150°C
Mounting Type	Surface Mount	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	TO-261-4, TO-261AA
Supplier Device Package	SOT-223	PG-SOT223-4-10	PG-SOT223-4	SOT-223-3	SOT-223-3	SOT-223-3
Product Status	Active	Obsolete	Last Time Buy	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory (Pcs)	5026	944	858	147882	49400	15265

Engineering Selection Recommendations

Direct Equivalents (Full Compatibility):

BCP55H6327XTSA1 and FZT491TA are direct electrical equivalents to the BCP55-16F, matching the 60V collector-emitter breakdown voltage and 1A maximum collector current. Both devices maintain identical saturation voltage characteristics and cutoff current specifications. However, BCP55H6327XTSA1 carries Obsolete product status, making it unsuitable for new designs or long-term supply chain planning. FZT491TA is Active and provides superior transition frequency (150MHz versus 100MHz) and higher power dissipation capability (2W versus 650mW), offering enhanced performance margins.

Conditional Substitutes (Electrical Derating Required):

BCP5416H6433XTMA1 and BCP5416TA both operate at reduced voltage ratings (45V versus 60V). These parts are suitable only for applications where the maximum collector-emitter voltage does not exceed 45V. BCP5416TA is preferred over BCP5416H6433XTMA1 due to Active product status and higher transition frequency (150MHz). The BCP5416H6433XTMA1 carries Last Time Buy status, indicating limited future availability.

FZT491ATA operates at 40V maximum collector-emitter breakdown voltage, the lowest rating among substitutes. This part is suitable only for applications with maximum voltages not exceeding 40V. FZT491ATA provides the highest DC current gain (300 @ 500mA, 5V) among all listed parts.

Compliance and Availability Considerations:

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard manufacturing and storage requirements. FZT491TA and BCP5416TA demonstrate the highest inventory availability (15265 and 147882 units respectively), supporting immediate procurement needs. The BCP55H6327XTSA1 and BCP5416H6433XTMA1 present supply chain risk due to Obsolete and Last Time Buy status respectively.

Frequently Asked Questions (FAQ)

Q: Can FZT491ATA be used as a direct replacement for BCP55-16F?

A: FZT491ATA is not a direct replacement. While both are NPN transistors in SOT-223 packaging with 1A maximum collector current, FZT491ATA has a maximum collector-emitter breakdown voltage of 40V compared to BCP55-16F's 60V. FZT491ATA is suitable only for applications where the maximum applied voltage does not exceed 40V.

Q: What is the difference between BCP5416TA and BCP5416H6433XTMA1?

A: Both parts share identical electrical specifications (45V, 1A, 100MHz transition frequency, 2W power dissipation). The primary differences are manufacturer (Diodes Incorporated versus Infineon Technologies), product status (Active versus Last Time Buy), and supplier device package designation (SOT-223-3 versus PG-SOT223-4). BCP5416TA is recommended due to Active status and significantly higher inventory availability.

Q: Is BCP55H6327XTSA1 recommended for new designs?

A: BCP55H6327XTSA1 is not recommended for new designs. Although it provides full electrical compatibility with BCP55-16F (60V, 1A, 100MHz), the part carries Obsolete product status. New designs should utilize FZT491TA, which offers equivalent voltage and current ratings with Active status and superior performance characteristics (150MHz transition frequency, 2W power dissipation).

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Transistor Type (must be NPN), (2) Voltage - Collector Emitter Breakdown (must be ≥60V for full compatibility), (3) Current - Collector (Max) (must be ≥1A), (4) Vce Saturation characteristics, (5) DC Current Gain (hFE) specifications, (6) Surface Mount packaging in TO-261-4 or TO-261AA case, and (7) RoHS3 compliance with MSL 1 rating.

Q: Can parts with lower voltage ratings be used in applications designed for BCP55-16F?

A: Parts with lower voltage ratings (BCP5416 series at 45V, FZT491ATA at 40V) can be used only if the application's maximum collector-emitter voltage does not exceed the substitute part's rating. This requires circuit analysis to confirm that voltage stress will not exceed the lower rating under all operating conditions, including transient events.

Q: What is the advantage of FZT491TA over BCP55-16F?

A: FZT491TA provides three performance advantages: (1) higher transition frequency (150MHz versus 100MHz), (2) higher power dissipation capability (2W versus 650mW), and (3) wider operating temperature range (-55°C to 150°C versus 0°C to 150°C implied). FZT491TA maintains identical voltage and current ratings while offering superior thermal and frequency performance margins.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use SOT-223 or equivalent packaging (TO-261-4, TO-261AA case), ensuring mechanical compatibility with BCP55-16F PCB layouts. However, supplier device package designations vary (SOT-223, PG-SOT223-4, PG-SOT223-4-10, SOT-223-3). These designations reflect manufacturer-specific packaging variants but maintain identical footprint compatibility.

Q: Which substitute part offers the best long-term supply availability?

A: BCP5416TA offers the best long-term supply availability with 147882 units in stock and Active product status. FZT491TA provides the second-best option with 15265 units and Active status. Both parts are suitable for designs requiring long-term component availability and supply chain stability.

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