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Diodes Incorporated DPLS325E-13
- Part No.:
- DPLS325E-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DPLS325E-13.pdf
- Description:
- TRANS PNP 25V 3A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,718
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Product details
Overview
DPLS325E-13 from Diodes Incorporated is a low VCE(SAT) PNP bipolar junction transistor in SOT-223 package, rated for -3 A continuous collector current and -25 V VCEO, with confirmed RCE(SAT) = 70 mΩ at -3 A / -100 mA base drive, hFE > 200 at -2 A, and RoHS-compliant matte tin plating-used in medium-power switching circuits such as DC-DC converter synchronous rectification stages.
For engineers reviewing the DPLS325E-13 datasheet, DPLS325E-13 pinout, DPLS325E-13 application, or DPLS325E-13 equivalent, key selection criteria include verified VCE(SAT) performance at high current, thermal resistance (RθJA = 125 °C/W on FR-4), SOT-223 mechanical compatibility, and complementary NPN pairing with DNLS320E.
Technical Context
This PNP transistor employs epitaxial planar die construction to achieve low saturation voltage and stable DC current gain across operating temperature (-55 to +150 °C). Its VCEO = -25 V and VCB0 = -25 V support medium-voltage switching in industrial power rails and load-switching nodes.
Designed for automated SMT assembly, it features moisture sensitivity level 1 per J-STD-020D, UL 94V-0 molded plastic case, and solderability validated per MIL-STD-202 Method 208-enabling reliable reflow processing without lead-free compatibility concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -25 V - maximum safe collector-emitter blocking voltage in common-emitter configuration |
| IC (cont.) | -3 A - continuous collector current rating defining usable switching capacity in DC loads |
| RCE(SAT) | 70 mΩ at -3 A / -100 mA - enables <0.21 V drop at full rated current, reducing conduction loss |
| hFE | 200 min at -2 A - ensures sufficient current amplification for direct base-drive control without external buffers |
| RθJA | 125 °C/W - thermal resistance on standard FR-4 PCB defines derating curve for ambient temperatures above 25 °C |
| fT | 100 MHz - transition frequency supports switching up to ~10–20 MHz in optimized layouts |
| Moisture Sensitivity | Level 1 - no baking required prior to reflow, simplifying manufacturing flow |
Pinout & Package
Package: SOT-223, surface-mount, 4-pin thermally enhanced plastic case with exposed collector tab (pin 3); weight ≈ 0.112 g; UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Main current exit path; connected to ground or low-side return in PNP switch configurations |
| 2 (Base) | B | Control input requiring negative bias relative to emitter to turn on; drives with -10 to -100 mA |
| 3 (Collector) | C | Main current entry point; electrically tied to exposed thermal pad for heatsinking in PCB layout |
| 4 (Collector) | C | Second collector connection-internally bonded to pin 3 for improved current handling and thermal transfer |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(SAT) | −0.21 V at −3 A / −100 mA base drive reduces power dissipation by >30% vs. standard PNP transistors |
| High hFE | ≥200 at −2 A enables direct microcontroller GPIO drive without base-current amplification |
| SOT-223 thermal design | Exposed collector tab (pins 3 & 4) delivers 125 °C/W RθJA on FR-4, supporting 1 W dissipation at 25 °C ambient |
| Lead-free & "Green" | Matte tin annealed over copper leadframe meets RoHS and Diodes Inc.'s halogen-free policy |
| Automated assembly ready | Moisture sensitivity Level 1 and standardized SOT-223 footprint ensure zero-prebake placement and reflow yield |
Applications
| DC-DC Converter Synchronous Rectifier | Industrial Load Switch |
|---|---|
Use Scenario: Replaces Schottky diode in buck converter output stage to reduce forward voltage drop and improve efficiency at 1–3 A loads. IC Role / Device Role / Timing Role: PNP power switch operating in linear saturation region during low-side conduction phase. Use Value: Achieves <0.21 V VCE(SAT) at −3 A, cutting conduction loss by ~40% versus 0.45 V Schottky alternatives. | Use Scenario: Controls 12 V/2 A solenoid or relay coil in programmable logic controller (PLC) output module. IC Role / Device Role / Timing Role: Medium-power PNP switch driven directly by FPGA I/O or microcontroller with open-drain interface. Use Value: High hFE ≥200 at −2 A eliminates need for Darlington or MOSFET gate driver, simplifying BOM. |
| LED Driver Current Sink | Linear Voltage Regulator Pass Element |
Use Scenario: Sinks current for high-brightness LED strings in automotive interior lighting with PWM dimming. IC Role / Device Role / Timing Role: Constant-current sink transistor modulated at 1–5 kHz via base PWM signal. Use Value: Low RCE(SAT) of 70 mΩ maintains <0.25 V headroom at 2 A, enabling tighter thermal margin in sealed housings. | Use Scenario: Acts as series pass element in adjustable linear regulator delivering 5 V @ 1.5 A from 12 V input. IC Role / Device Role / Timing Role: Linear-mode PNP transistor dissipating up to 10.5 W peak under worst-case dropout. Use Value: SOT-223 thermal pad and 125 °C/W RθJA allow operation up to 85 °C ambient with minimal heatsink area. |
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 |
|---|---|---|---|
| MJD2955T4G | VCEO = -60 V, IC = -10 A, RθJA = 62.5 °C/W (TO-220), hFE = 20–70 at -4 A | Higher voltage/current rating but lower hFE and through-hole package-requires heatsink and base resistor redesign | Select when higher blocking voltage or thermal headroom is needed; not drop-in for SMT layouts |
| DMMT3906W | SOT-323, IC = -200 mA, VCEO = -40 V, hFE = 100 min at -10 mA-lower power, smaller footprint | Not suitable for >500 mA loads; lacks thermal pad and current capability for DPLS325E-13 use cases | Choose only for low-current signal switching where board space is critical |
Compared with MJD2955T4G and DMMT3906W, DPLS325E-13 uniquely balances SMT manufacturability, 3 A current capability, low saturation voltage, and high hFE-making it optimal for space-constrained, medium-power PNP switching where thermal management and drive simplicity are prioritized.
Availability
DPLS325E-13 is available at Aetrix Electronics and suitable for DC-DC converters, industrial load switches, LED current sinks, and linear regulator pass elements requiring stable component supply, consistent SOT-223 form factor, and verified low-VCE(SAT) performance.
Supply support for DPLS325E-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 centers across Asia and manufacturing in China, Taiwan, and Malaysia.
The DPLS325E belongs to Diodes' low-saturation PNP transistor product line, engineered specifically for high-efficiency, medium-power switching in space-constrained industrial and consumer power systems.
FAQ
What is the maximum allowable junction temperature for DPLS325E-13?
The absolute maximum junction temperature is +150 °C, with storage temperature matching that range. Operation at this limit requires strict derating per the power dissipation vs. ambient temperature curve (Fig. 1), especially above 75 °C ambient, where PD drops below 500 mW due to RθJA = 125 °C/W on standard FR-4.
Can DPLS325E-13 be used in parallel for higher current handling?
No-this PNP transistor lacks built-in emitter ballasting or matched VBE(SAT) characteristics required for safe current sharing. Parallel operation risks thermal runaway due to positive temperature coefficient of VCE(SAT); discrete current-sharing resistors or dedicated high-current alternatives like MJD2955T4G are recommended instead.
Is the exposed collector pad (pin 3/4) electrically isolated from other pins?
No-the exposed collector pad is internally connected to both pin 3 and pin 4, forming a single collector terminal. It must be routed to the same net as those pins and may be tied to ground or system power plane depending on circuit topology, but never left floating or connected to a different potential.
Does DPLS325E-13 support pulse current beyond its continuous rating?
Yes-it is rated for ICM = -6 A peak pulse current under conditions defined in the datasheet (pulse width ≤300 μs, duty cycle ≤2.0%). This enables short-duration surge handling in motor start-up or inrush limiting, provided average power remains within the 1 W continuous limit and thermal mass prevents junction overheating.
DPLS325E-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):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 25 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 100mA, 3A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 10mA, 2V
- Power - Max:
- 1 W
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
DPLS325E-13 FAQ
1.How can I place an order for DPLS325E-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DPLS325E-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 DPLS325E-13 reliable?
The price and inventory of DPLS325E-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DPLS325E-13 is usually 5 days.
3.What payment methods are accepted for DPLS325E-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DPLS325E-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DPLS325E-13?
DPLS325E-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DPLS325E-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 DPLS325E-13?
For technical support, including DPLS325E-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DPLS325E-13 requirements.
6.How does Aetrix verify that DPLS325E-13 is sourced from the original manufacturer or authorized distributors?
All DPLS325E-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 DPLS325E-13 meets industry standards.
7.What is the process for return or replacement of DPLS325E-13?
All DPLS325E-13 units undergo pre-shipment inspection (PSI). If there is an issue with DPLS325E-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 DPLS325E-13 part is unused and in its original packaging.
Return procedure for DPLS325E-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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