DCP51-16-13 Equivalent & Substitute Parts

Part Overview

The DCP51-16-13 is a Surface Mount PNP Bipolar Junction Transistor manufactured by Diodes Incorporated, rated for 45V collector-emitter breakdown voltage and 1A maximum collector current in a SOT-223-3 package. This device is classified as Obsolete, necessitating identification of active equivalent and substitute components for ongoing design support and procurement.

The primary reason for identifying substitutes is the obsolete product status, which restricts future availability and supply chain continuity. Active alternatives with equivalent or enhanced electrical characteristics are required to maintain design functionality and ensure long-term component sourcing.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector-Emitter Breakdown Voltage (Max)	45	V
Collector Current (Max)	1	A
Power Dissipation (Max)	1	W
Transition Frequency	200	MHz
DC Current Gain (hFE Min)	100	@ 150mA, 2V
Vce Saturation (Max)	500	mV @ 50mA, 500mA
Operating Temperature Range	-55 to 150	°C
Package Type	SOT-223-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the DCP51-16-13 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor Type: PNP (mandatory)
Collector-Emitter Breakdown Voltage: 45V minimum
Collector Current Rating: 1A minimum
Package Type: SOT-223 or SOT-223-3 (mechanical compatibility)
Mounting Type: Surface Mount
Vce Saturation: 500mV maximum @ specified conditions
DC Current Gain (hFE): 100 minimum @ 150mA, 2V

Allowable Variations:

Power Dissipation: Equal to or greater than 1W
Transition Frequency: Equal to or greater than 100MHz
Operating Temperature Range: Equal to or greater than -55°C to 150°C
Collector Cutoff Current: 100nA maximum

Substitute parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Equivalents (Active Status): Parts with identical electrical specifications and active product status, suitable for direct replacement.
Manufacturer Recommended Alternatives (Active Status): Parts with enhanced specifications (higher power rating, improved frequency response, or extended temperature range) that maintain backward compatibility while offering improved performance margins.
Parametric Equivalents (Alternate Manufacturers): Parts from different manufacturers meeting all critical electrical parameters with automotive-grade qualifications where applicable.

Parameter Comparison

Part Number	Manufacturer	Status	Vce(BR) Max (V)	Ic Max (A)	Power Max (W)	fT (MHz)	hFE Min @ 150mA, 2V	Package	Temp Range (°C)
DCP51-16-13	Diodes Inc.	Obsolete	45	1	1	200	100	SOT-223-3	-55 to 150
BCP5116TA	Diodes Inc.	Active	45	1	2	150	100	SOT-223-3	-65 to 150
BCP5316TA	Diodes Inc.	Active	80	1	2	150	100	SOT-223-3	-65 to 150
BCP51-16,135	Nexperia USA	Active	45	1	1	145	100	SOT-223	-40 to 150
BCP51-16,115	Nexperia USA	Active	45	1	1	145	100	SOT-223	-40 to 150
BCP51,115	Nexperia USA	Active	45	1	1	145	63	SOT-223	-40 to 150
BCP51-10,135	Nexperia USA	Active	45	1	1	145	63	SOT-223	-40 to 150
BCP51-16-TP	Micro Commercial	Active	45	1	0.3	100	100	SOT-223	-55 to 150
BCP5116H6327XTSA1	Infineon Tech.	Last Time Buy	45	1	2	125	100	PG-SOT223-4-24	-40 to 150
2STN2540	STMicroelectronics	Active	40	5	1.6	—	150	SOT-223	-40 to 150

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended for Obsolescence Mitigation):

BCP5116TA (Diodes Incorporated) is the primary recommended substitute. This part maintains identical electrical specifications to the DCP51-16-13 (45V, 1A, 100 hFE minimum) while offering enhanced power dissipation (2W vs. 1W) and extended lower operating temperature limit (-65°C vs. -55°C). Active product status ensures long-term availability. Packaging is SOT-223-3, providing direct mechanical compatibility.

Tier 2 - Enhanced Performance Alternatives (For Improved Design Margins):

BCP5316TA (Diodes Incorporated) provides the same collector current and gain characteristics as the main part but with elevated voltage rating (80V vs. 45V) and increased power dissipation (2W). This part is suitable for applications requiring higher voltage headroom. Active status and SOT-223-3 packaging ensure compatibility.

Tier 3 - Automotive-Qualified Alternatives (For Automotive Applications):

BCP51-16,135 and BCP51-16,115 (Nexperia USA Inc.) are AEC-Q100 qualified automotive-grade transistors with identical electrical specifications (45V, 1A, 100 hFE minimum) and 1W power rating. These parts are suitable for automotive and industrial applications requiring qualification documentation. Operating temperature range is -40°C to 150°C.

Tier 4 - Parametric Equivalents (Extended Temperature Range):

BCP51-16-TP (Micro Commercial Co) maintains the original operating temperature range (-55°C to 150°C) and all critical electrical parameters. Power dissipation is reduced to 300mW, limiting use to lower-power applications. Transition frequency is 100MHz.

Not Recommended for Direct Substitution:

2STN2540 (STMicroelectronics) exceeds the collector current specification (5A vs. 1A) and is intended for higher-current applications. While voltage and package compatibility exist, this part introduces unnecessary design complexity and cost for 1A applications.

BCP51,115 and BCP51-10,135 (Nexperia USA Inc.) have reduced DC current gain (63 vs. 100 minimum), requiring circuit redesign to maintain performance specifications.

BCP5116H6327XTSA1 (Infineon Technologies) carries Last Time Buy status, indicating imminent discontinuation and unsuitability for new designs requiring long-term supply.

Frequently Asked Questions (FAQ)

Q: Can BCP5116TA directly replace DCP51-16-13 without circuit modification?

A: Yes. BCP5116TA maintains all critical electrical parameters (45V, 1A, 100 hFE minimum, 500mV Vce saturation) and uses identical SOT-223-3 packaging. Enhanced power dissipation (2W vs. 1W) and extended temperature range provide additional design margin without requiring circuit changes.

Q: What is the difference between BCP51-16,135 and BCP51-16,115?

A: Both parts are electrically identical (45V, 1A, 100 hFE minimum, 1W power) and use SOT-223 packaging. The primary difference is packaging format: BCP51-16,135 is supplied in Tape & Reel, while BCP51-16,115 is also supplied in Tape & Reel. Both are AEC-Q100 qualified automotive-grade components.

Q: Why is BCP5316TA listed as a substitute if it has 80V rating instead of 45V?

A: BCP5316TA is a valid substitute because all critical parameters for the 1A, 100 hFE application are met or exceeded. The higher voltage rating (80V) provides additional design margin and does not prevent use in 45V applications. This part is suitable when higher voltage headroom is beneficial or when supply of 45V-rated alternatives is constrained.

Q: Is the operating temperature range difference between DCP51-16-13 (-55°C to 150°C) and Nexperia alternatives (-40°C to 150°C) significant?

A: The difference is significant only for applications requiring operation below -40°C. For standard industrial and commercial applications operating above -40°C, Nexperia alternatives are fully compatible. For extended low-temperature operation, BCP5116TA (-65°C to 150°C) or BCP51-16-TP (-55°C to 150°C) are required.

Q: Can BCP51,115 be used as a substitute despite lower hFE (63 vs. 100)?

A: BCP51,115 is not recommended as a direct substitute without circuit analysis. The reduced DC current gain (63 minimum vs. 100 minimum) requires higher base current to achieve the same collector current, potentially affecting circuit performance and power consumption. Use only if circuit design accommodates lower gain specifications.

Q: What is the significance of the SOT-223 vs. SOT-223-3 package designation?

A: SOT-223-3 and SOT-223 refer to the same physical package with three leads (Base, Collector, Emitter). The "-3" designation explicitly indicates three-lead configuration. Both designations are mechanically and electrically compatible for this application.

Q: Why is 2STN2540 not recommended despite SOT-223 packaging?

A: 2STN2540 is rated for 5A collector current, significantly exceeding the 1A requirement of the DCP51-16-13. While electrically functional, this part introduces unnecessary cost and complexity for applications requiring only 1A. Additionally, the 40V voltage rating is lower than the original 45V specification, reducing design margin.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification, matching the environmental compliance status of the original DCP51-16-13.

Q: What is the inventory status of recommended substitutes?

A: BCP5116TA (1,192 pcs), BCP5316TA (1,485 pcs), BCP51-16,135 (6,575 pcs), BCP51-16,115 (4,400 pcs), and BCP51,115 (52,964 pcs) are currently in stock. BCP5116H6327XTSA1 (897 pcs) carries Last Time Buy status. Inventory levels are subject to change; current availability should be confirmed with the supplier.

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