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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Diodes Incorporated DCP51-16-13

Name: DCP51-16-13
Brand: Diodes Incorporated
SKU: DCP51-16-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DCP51-16-13

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: TO-261-4, TO-261AA

Datasheet:: DCP51-16-13.pdf

Description:: TRANS PNP 45V 1A SOT-223-3

Quantity:: RFQ Add To RFQ list

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Inventory:60

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Product details

Overview

DCP51-16-13 from Diodes Incorporated is a PNP epitaxial planar silicon transistor in SOT-223 package, rated for -45 V V_CEO, -1 A continuous collector current, and 1 W power dissipation at T_A = 25°C; used in medium-power switching and linear amplification circuits such as load control in industrial power supplies.

For engineers reviewing the DCP51-16-13 datasheet, DCP51-16-13 pinout, DCP51-16-13 application, or DCP51-16-13 equivalent, key selection factors include verified V_CEO/V_CBO ratings, h_FE range at IC = -150 mA and -500 mA, V_CE(SAT) under defined drive conditions, thermal resistance (R_θJA = 125 °C/W), and SOT-223 terminal configuration with dual collector pins.

Technical Context

This PNP bipolar junction transistor operates in active or saturation mode with DC current gain (h_FE) ranging from 100 to 250 at I_C = -150 mA and V_CE = -2 V, and drops to 25–250 at I_C = -500 mA. Its transition frequency f_T is 200 MHz at I_C = -50 mA, V_CE = -5 V, enabling use in low-to-moderate frequency analog and switching applications up to ~10 MHz.

Thermal performance is defined by R_θJA = 125 °C/W on FR-4 PCB per AP02001 layout, supporting operation from -55°C to +150°C. The device features matte tin-plated copper leadframe, RoHS-compliant "Green" molding compound, and moisture sensitivity level 1 - suitable for standard reflow without baking.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-45 V - maximum safe voltage between collector and emitter with base open; defines blocking capability in switch-off state
I_C (continuous)	-1 A - max DC collector current before thermal derating; sets upper limit for steady-state load handling
P_D	1 W @ T_A = 25°C - usable power dissipation on standard FR-4 board; requires thermal design below 125 °C/W R_θJA
h_FE	100–250 @ I_C = -150 mA - ensures reliable base drive margin for switching; lower gain at high current affects drive efficiency
V_CE(SAT)	-0.5 V @ I_C = -500 mA, I_B = -50 mA - determines conduction loss and heat generation in saturated switch mode
f_T	200 MHz - usable for small-signal amplification up to ~10 MHz; not intended for RF or high-speed digital switching

Pinout & Package

Package: SOT-223 - surface-mount plastic case with exposed thermal pad (pin 2 and 4 both connected to collector), UL 94V-0 rated, 0.115 g weight, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current exit path for PNP device; connects to higher potential node in common-emitter switch configuration
2 (Collector)	C	Main current sink; electrically tied to pin 4; requires thermal pad connection for power dissipation
3 (Base)	B	Control input; negative bias relative to emitter turns device ON; requires current-limiting resistor in driver stage
4 (Collector)	C	Second collector terminal; redundant connection to pin 2 for enhanced thermal and current handling

Key Features

Feature	Design Value
Epitaxial planar die construction	Enables stable h_FE across temperature and consistent V_CE(SAT) performance in production batches
Complementary NPN type (DCP54)	Allows matched-pair design in push-pull or differential amplifier stages without cross-manufacturer sourcing
SOT-223 dual-collector thermal layout	Supports 1 W dissipation on standard FR-4 via pins 2+4 and thermal pad; avoids need for heatsink in moderate-load apps
Lead-free / RoHS / "Green" compliant	Meets global environmental regulations without SnPb plating; compatible with standard Pb-free reflow profiles (J-STD-020C Level 1)

Applications

Industrial Power Supply Control

Automotive Lighting Driver

Use Scenario: Switching 12 V/500 mA incandescent or LED loads in 24 V truck lighting modules.

IC Role / Device Role / Timing Role: Medium-power PNP switch controlling ground-referenced load; driven by microcontroller GPIO through base resistor.

Use Value: V_CE(SAT) ≤ -0.5 V minimizes power loss; SOT-223 thermal pad enables conduction cooling without external heatsink.

Use Scenario: Linear current regulation for halogen lamp dimming in dashboard backlight circuits.

IC Role / Device Role / Timing Role: Emitter-follower configured as adjustable current source with feedback resistor network.

Use Value: h_FE ≥ 100 at I_C = -150 mA ensures stable gain and low base drive current; -45 V rating accommodates load dump transients.

Consumer Appliance Motor Driver

Industrial PLC Output Stage

Use Scenario: Driving brushed DC fan motors (24 V, 800 mA) in HVAC control units.

IC Role / Device Role / Timing Role: Single-ended switch in common-emitter topology; base driven by optocoupler-isolated signal.

Use Value: I_C = -1 A rating supports motor stall current; dual collector pins reduce bond wire resistance and improve reliability.

Use Scenario: Discrete output buffer for 24 V DC digital outputs in programmable logic controller backplanes.

IC Role / Device Role / Timing Role: High-side switch interfacing microcontroller to field-side inductive loads (solenoids, relays).

Use Value: V_CEO = -45 V withstands inductive kickback; R_θJA = 125 °C/W allows operation at 70°C ambient without derating.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCP51	V_CEO = -45 V, I_C = -1 A, h_FE = 40–250, same SOT-223 package	No dual-collector pin; single collector terminal reduces thermal path efficiency	Acceptable where thermal load < 0.7 W; verify R_θJA derating on target PCB
BCP5116	Identical electrical specs to BCP51 but with tighter h_FE bin (100–250); same package	Same mechanical interface; no change in thermal or layout requirements	Preferred when consistent gain is critical; direct drop-in replacement for DCP51-16-13 in new designs

Compared with DCP51-16-13, BCP51 offers identical voltage/current ratings but reduced thermal performance due to single collector; BCP5116 matches DCP51-16-13's h_FE range and improves gain consistency, making it the most functionally aligned alternative for new designs.

Availability

DCP51-16-13 is available at Aetrix Electronics and suitable for industrial power supply control, automotive lighting drivers, consumer appliance motor control, and PLC output stages requiring stable component supply with known thermal and switching behavior.

Supply support for DCP51-16-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.

The DCP51 series belongs to Diodes' general-purpose bipolar transistor product line, engineered for cost-effective, thermally robust medium-power switching and amplification in industrial and automotive systems.

FAQ

Is DCP51-16-13 pin-compatible with BCP51?

Yes - both use SOT-223 package with identical pin 1 (E), pin 2 (C), pin 3 (B) assignment. However, DCP51-16-13 has an additional collector terminal at pin 4, while BCP51 has only three terminals. PCB layout must accommodate this difference if substituting.

What is the maximum allowable junction temperature for continuous operation?

The absolute maximum junction temperature is +150°C. Continuous operation at this limit requires zero thermal resistance from junction to ambient - practically unachievable. Derating begins above 25°C ambient per Fig. 1; at 70°C ambient, max usable power drops to ~0.6 W.

Does DCP51-16-13 support pulse operation beyond its DC ratings?

Yes - pulsed I_C up to -1.5 A is allowed (ICM), provided pulse width ≤ 300 μs and duty cycle ≤ 2%, as specified in the datasheet's "Maximum Ratings" table. This enables short-duration surge handling in motor start or relay pull-in scenarios.

Why is DCP51-16-13 marked "Not Recommended for New Design"?

Diodes Incorporated issued this designation because newer alternatives like BCP5116 offer tighter h_FE binning and improved process control, while maintaining full compatibility. It does not indicate obsolescence - DCP51-16-13 remains fully manufactured and supported for legacy program continuity.

DCP51-16-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 50mA, 500mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 2V

Power - Max:: 1 W

Frequency - Transition:: 200MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223-3

DCP51-16-13 FAQ

1.How can I place an order for DCP51-16-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for DCP51-16-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DCP51-16-13 reliable?

The price and inventory of DCP51-16-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DCP51-16-13 is usually 5 days.

3.What payment methods are accepted for DCP51-16-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DCP51-16-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DCP51-16-13?

DCP51-16-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DCP51-16-13 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DCP51-16-13?

For technical support, including DCP51-16-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DCP51-16-13 requirements.

6.How does Aetrix verify that DCP51-16-13 is sourced from the original manufacturer or authorized distributors?

All DCP51-16-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DCP51-16-13 meets industry standards.

7.What is the process for return or replacement of DCP51-16-13?

All DCP51-16-13 units undergo pre-shipment inspection (PSI). If there is an issue with DCP51-16-13, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DCP51-16-13 part is unused and in its original packaging.

Return procedure for DCP51-16-13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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