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Diodes Incorporated DNLS350E-13
- Part No.:
- DNLS350E-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DNLS350E-13.pdf
- Description:
- TRANS NPN 50V 3A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:39,466
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Product details
Overview
DNLS350E-13 from Diodes Incorporated is a low VCE(SAT) NPN bipolar junction transistor in SOT223 package, rated for 50 V VCEO, 3 A continuous collector current, and 62 mΩ equivalent on-resistance at 2 A. It delivers high-current switching with minimal conduction loss and is qualified to AEC-Q101 for automotive reliability. Used in medium-power DC-DC converter primary-side switches and motor driver half-bridge legs.
For engineers reviewing the DNLS350E-13 datasheet, DNLS350E-13 pinout, DNLS350E-13 application, or DNLS350E-13 equivalent, key selection criteria include VCE(SAT) at 2 A, thermal resistance (RθJL = 15 °C/W), AEC-Q101 qualification, SOT223 thermal pad layout, and complementary PNP pairing with DPLS350E.
Technical Context
This NPN transistor operates as a medium-power linear or saturated switch, optimized for low-loss conduction in automotive body control modules and industrial power supplies. Its 62 mΩ RCE(SAT) and 15 °C/W junction-to-lead thermal resistance enable stable 2 A operation without external heatsinking under typical PCB copper layouts.
The device features 4 kV HBM ESD rating and operates across –55 °C to +150 °C, supporting engine bay and under-hood applications. With hFE ≥ 100 at 2 A and fT = 100 MHz, it supports both switching and moderate-frequency amplification roles in feedback-controlled power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum safe collector-emitter voltage during switching transitions in 12 V/24 V automotive systems |
| IC (continuous) | 3 A - Sustained current capability enabling use in 30 W load switches without derating at 70 °C ambient |
| VCE(SAT) @ 2 A | 290 mV - Low saturation voltage reduces power loss to ≤ 580 mW at full load, minimizing thermal stress |
| RCE(SAT) | 62 mΩ - Equivalent on-resistance directly determines I²R conduction loss in PWM-driven loads |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance enables direct thermal coupling to PCB copper pour for passive cooling |
| hFE @ 2 A | 100 - Minimum DC current gain ensures reliable base drive margin with standard 5 V MCU GPIO or dedicated drivers |
| ESD HBM | 4,000 V - Robust electrostatic immunity supports automated assembly and field-replaceable module integration |
Pinout & Package
Package: SOT223 - Surface-mount plastic package with exposed collector tab for thermal and electrical connection to PCB copper pour. Molded "Green" compound, UL 94V-0 rated, 0.112 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (Tab) | Main current path output / heat sink interface | Exposed metal tab electrically connected to collector; must be soldered to ≥25 mm² 2 oz copper for RθJA = 62.5 °C/W performance |
| Emitter | Current return path / reference node | Low-impedance emitter connection enables stable ground-referenced switching in high-side or low-side configurations |
| Base | Control input / current gain modulation node | Requires 200 mA peak base drive for full 2 A saturation; compatible with standard logic-level drivers (e.g., TC4427) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including BCM, seat control, and HVAC actuators per stress test requirements |
| 62 mΩ RCE(SAT) | Enables <0.6 W conduction loss at 2 A, reducing thermal design burden versus standard BJT alternatives |
| SOT223 thermal pad | Exposed collector tab allows direct thermal transfer to PCB, eliminating need for discrete heatsinks in space-constrained modules |
| Lead-free & halogen-free | Complies with RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity, supporting lead-free reflow and long-term reliability |
Applications
| Automotive Body Control Module | Industrial DC-DC Converter |
|---|---|
|
Use Scenario: Driving 12 V solenoid valves and LED arrays in door lock, mirror fold, and interior lighting circuits. IC Role / Device Role / Timing Role: Medium-power NPN switch controlling load current up to 2.5 A with fast turn-on/turn-off (<1 µs propagation delay). Use Value: Low VCE(SAT) minimizes self-heating during duty-cycled operation, extending component life in sealed enclosures. |
Use Scenario: Primary-side switch in non-isolated buck regulators powering 5 V/3.3 V microcontroller rails. IC Role / Device Role / Timing Role: Saturated-mode switching element operating at 100–500 kHz with fixed base drive. Use Value: 62 mΩ RCE(SAT) reduces conduction loss by >40% vs. legacy PN2222A, improving efficiency at 1–2 A output. |
| Motor Driver Half-Bridge Leg | High-Reliability Power Sequencer |
|
Use Scenario: Low-side switch in brushed DC motor drivers for HVAC blower and power window subsystems. IC Role / Device Role / Timing Role: Current-handling transistor in H-bridge topology, commutated with complementary DPLS350E PNP. Use Value: Matched VCE(SAT) and hFE with DPLS350E ensures balanced shoot-through immunity and symmetric drive timing. |
Use Scenario: Controlled power-up sequencing of FPGA I/O banks and analog front-ends in test equipment. IC Role / Device Role / Timing Role: Precision on/off gate for 3.3 V/5 V rail enable lines, driven by microcontroller GPIO. Use Value: 4 kV HBM ESD rating prevents latch-up during hot-plug events; –55 °C to +150 °C range supports extended temperature testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN25040DFHTA | Higher VCEO (60 V), lower RCE(SAT) (45 mΩ), but SOT23 package limits IC to 1.5 A continuous | Not suitable for 2–3 A loads; requires redesign of thermal layout and base drive network | Select only when board space is critical and peak current ≤ 1.5 A |
| MJD31C-TP | Same SOT223 package, higher VCEO (100 V), but VCE(SAT) = 1.2 V @ 3 A - 4× higher conduction loss | Acceptable for lower-efficiency, cost-sensitive industrial controls where thermal margin exists | Prefer when absolute maximum voltage > 60 V is required and efficiency is secondary |
Compared with ZXTN25040DFHTA and MJD31C-TP, DNLS350E-13 uniquely balances 3 A current handling, 62 mΩ RCE(SAT), AEC-Q101 qualification, and SOT223 thermal performance - making it optimal for automotive and thermally constrained industrial switching where both reliability and efficiency matter.
Availability
DNLS350E-13 is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC-DC converters, and motor driver half-bridge designs requiring stable component supply, AEC-Q101 compliance, and consistent thermal performance across production lots.
Supply support for DNLS350E-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, specializing in high-reliability components for automotive, industrial, and computing markets.
DNLS350E-13 belongs to Diodes' AEC-Q101-qualified low-saturation BJT product line, engineered specifically for thermally efficient, high-current switching in space- and reliability-constrained automotive subsystems.
FAQ
What is the maximum continuous collector current for DNLS350E-13 at 100 °C ambient?
At TA = 100 °C, the maximum continuous collector current is 1.8 A, derived from the 3 A rating at 25 °C and the 62.5 °C/W RθJA (25 mm × 25 mm copper) derating curve. This assumes no forced airflow and standard FR4 PCB layout per AP02001.
Can DNLS350E-13 be used in parallel with another unit for higher current?
No - DNLS350E-13 lacks built-in current-sharing features such as matched hFE bins or integrated emitter resistors. Parallel operation risks thermal runaway due to parameter spread; discrete emitter resistors (≥0.1 Ω) and individual base drive are required for safe paralleling.
Is the exposed collector tab electrically isolated from the PCB copper pour?
No - the SOT223 collector tab is internally bonded to the die collector and must be soldered directly to PCB copper. It serves as both electrical connection and primary thermal path; isolation would defeat its thermal design purpose and violate JEDEC mounting guidelines.
Does DNLS350E-13 support pulse-width modulated (PWM) operation above 100 kHz?
Yes - with fT = 100 MHz and typical turn-on/turn-off times < 100 ns, DNLS350E-13 supports clean PWM switching up to 500 kHz in saturated mode. Base drive strength (≥200 mA peak) and layout inductance must be controlled to maintain edge integrity.
DNLS350E-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Vce Saturation (Max) @ Ib, Ic:
- 290mV @ 200mA, 2A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 2A, 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
DNLS350E-13 FAQ
1.How can I place an order for DNLS350E-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DNLS350E-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 DNLS350E-13 reliable?
The price and inventory of DNLS350E-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DNLS350E-13 is usually 5 days.
3.What payment methods are accepted for DNLS350E-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DNLS350E-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DNLS350E-13?
DNLS350E-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DNLS350E-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 DNLS350E-13?
For technical support, including DNLS350E-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DNLS350E-13 requirements.
6.How does Aetrix verify that DNLS350E-13 is sourced from the original manufacturer or authorized distributors?
All DNLS350E-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 DNLS350E-13 meets industry standards.
7.What is the process for return or replacement of DNLS350E-13?
All DNLS350E-13 units undergo pre-shipment inspection (PSI). If there is an issue with DNLS350E-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 DNLS350E-13 part is unused and in its original packaging.
Return procedure for DNLS350E-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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