BCP51-16-TP Equivalent & Substitute Parts

Part Overview

The BCP51-16-TP is an active production PNP bipolar junction transistor manufactured by Micro Commercial Co, designed for surface mount applications in the SOT-223 package. This component operates at maximum collector current of 1 A with a collector-emitter breakdown voltage of 45 V and maximum power dissipation of 300 mW. The transistor is specified for operating temperatures from -55°C to 150°C and features a transition frequency of 100 MHz. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and package specifications to support component procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	1	A
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max) @ Ib, Ic	500 mV @ 50 mA, 500 mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 150 mA, 2 V	—
Power - Max	300	mW
Frequency - Transition	100	MHz
Operating Temperature Range	-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	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BCP51-16-TP are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor Type: PNP configuration
Maximum Collector Current: 1 A
Collector-Emitter Breakdown Voltage: 45 V
Vce Saturation: 500 mV @ 50 mA, 500 mA
Collector Cutoff Current: 100 nA (ICBO)
Package Type: SOT-223 surface mount
RoHS3 Compliance

Allowable Variation Parameters:

DC Current Gain (hFE): Minimum 63 or higher at specified conditions
Power Dissipation: 300 mW or greater
Transition Frequency: 100 MHz or higher
Operating Temperature Range: Minimum -55°C to 150°C or equivalent upper limit

Substitute parts meet or exceed the electrical performance of the main part while maintaining identical package footprint and lead configuration for direct board-level replacement.

Parameter Comparison

Parameter	BCP51-16-TP (Micro Commercial Co)	BCP51-16,115 (Nexperia USA Inc.)	BCP5110TA (Diodes Incorporated)	BCP5116TA (Diodes Incorporated)
Transistor Type	PNP	PNP	PNP	PNP
Current - Collector (Ic) Max	1 A	1 A	1 A	1 A
Voltage - Collector Emitter Breakdown (Max)	45 V	45 V	45 V	45 V
Vce Saturation (Max) @ Ib, Ic	500 mV @ 50 mA, 500 mA	500 mV @ 50 mA, 500 mA	500 mV @ 50 mA, 500 mA	500 mV @ 50 mA, 500 mA
Current - Collector Cutoff (Max)	100 nA	100 nA	100 nA	100 nA
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 150 mA, 2 V	100 @ 150 mA, 2 V	63 @ 150 mA, 2 V	100 @ 150 mA, 2 V
Power - Max	300 mW	1 W	2 W	2 W
Frequency - Transition	100 MHz	145 MHz	150 MHz	150 MHz
Operating Temperature Range	-55 to 150°C	150°C (TJ)	-65 to 150°C	-65 to 150°C
Mounting Type	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
Supplier Device Package	SOT-223	SOT-223	SOT-223-3	SOT-223-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active production status and full RoHS3 compliance, ensuring regulatory alignment with current environmental standards. The BCP51-16,115 from Nexperia USA Inc. provides direct electrical and thermal equivalence with enhanced transition frequency performance. The BCP5110TA and BCP5116TA from Diodes Incorporated offer increased power dissipation capability (2 W versus 300 mW) and extended low-temperature operating range (-65°C versus -55°C), providing design margin for thermally demanding applications.

Selection between substitute parts depends on application-specific requirements: the Nexperia part maintains closest specification alignment to the original BCP51-16-TP, while Diodes Incorporated parts provide enhanced thermal performance and temperature range coverage. All parts share identical SOT-223 package footprints and lead configurations, supporting direct board-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can BCP5110TA and BCP5116TA be used interchangeably with BCP51-16-TP?

A: Both Diodes Incorporated parts are electrically compatible substitutes. The BCP5116TA matches the DC current gain specification (hFE = 100) of the original part, while the BCP5110TA operates at hFE = 63. Both parts exceed the power dissipation and transition frequency requirements. Selection depends on circuit gain requirements and thermal design margins.

Q: What is the difference between SOT-223 and SOT-223-3 package designations?

A: Both designations refer to the same physical package footprint (TO-261-4, TO-261AA) used for surface mount applications. The "-3" suffix in SOT-223-3 indicates a three-terminal configuration. All listed parts are compatible for direct board-level replacement.

Q: Are the Nexperia BCP51-16,115 and Diodes Incorporated parts suitable for automotive applications?

A: The BCP51-16,115 carries automotive grade qualification (AEC-Q100). The Diodes Incorporated parts (BCP5110TA and BCP5116TA) do not list automotive qualification in the provided specifications. Application requirements determine whether automotive-grade components are necessary.

Q: What is the significance of the extended temperature range in BCP5110TA and BCP5116TA?

A: The Diodes Incorporated parts specify -65°C to 150°C operating range compared to -55°C to 150°C for the BCP51-16-TP. This extended low-temperature specification provides additional design margin for applications operating in cold environments or with stringent temperature cycling requirements.

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

A: All listed parts support transition frequencies of 100 MHz or higher, meeting requirements for standard switching applications. The BCP51-16,115, BCP5110TA, and BCP5116TA offer enhanced frequency performance (145-150 MHz) compared to the original part (100 MHz), providing additional margin for high-frequency circuit designs.

Q: What inventory considerations apply to these substitute parts?

A: Inventory availability varies by manufacturer and distributor. BCP5110TA shows highest availability (66,045 pieces), followed by BCP51-16,115 (4,400 pieces), BCP5116TA (1,192 pieces), and BCP51-16-TP (1,143 pieces). Supply chain planning should account for these availability differences.

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