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Diodes Incorporated DL4003-13
- Part No.:
- DL4003-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
DL4003-13.pdf
- Description:
- DIODE GEN PURP 200V 1A MELF
- Quantity:
- Payment:
- Shipping:
Inventory:3,714
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Product details
Overview
DL4003-13 from Diodes Incorporated is a glass passivated surface-mount silicon rectifier diode rated for 200 V peak repetitive reverse voltage (VRRM), 1.0 A average forward rectified current (IO) at 75 °C terminal temperature, and 1.1 V maximum forward voltage (VF) at 1.0 A. It features low leakage (5.0 µA at 25 °C), 30 A non-repetitive surge capability, and MELF package construction for high reliability in power conversion stages of AC/DC adapters and industrial power supplies.
For engineers reviewing the DL4003-13 datasheet, DL4003-13 pinout, DL4003-13 application, or DL4003-13 equivalent, key selection criteria include its 200 V blocking rating, thermal resistance (50 K/W), junction capacitance (15 pF), surge robustness (30 A, 8.3 ms), and MELF mechanical compatibility with automated SMT placement.
Technical Context
This device operates as a unidirectional power rectifier in single-phase, half-wave configurations with resistive or inductive loads at 60 Hz. Its glass passivation ensures stable reverse characteristics across -55 °C to +150 °C operating range and low IR drift up to 100 °C.
The MELF package provides uniform thermal dissipation and mechanical stability under thermal cycling. Junction capacitance remains stable below 15 pF up to 200 V reverse bias, supporting predictable switching behavior in line-frequency applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage the diode blocks without breakdown in normal operation |
| IO @ TT=75°C | 1.0 A - Continuous DC output current capability with heatsink-limited terminal temperature |
| VF @ IF=1.0A | 1.1 V - Forward conduction loss determining power dissipation (1.1 W at full load) |
| IFSM (8.3 ms) | 30 A - Surge withstand for brief line transients or startup inrush without failure |
| IR @ VR=200V, 25°C | 5.0 µA - Low leakage ensuring minimal standby power loss and signal integrity in high-impedance circuits |
| RJA | 50 K/W - Thermal resistance from junction to ambient air, defining natural-convection cooling limits |
| Cj @ VR=4V, 1MHz | 15 pF - Junction capacitance affecting high-frequency noise coupling and EMI filtering design |
Pinout & Package
MELF (Metal Electrode Leadless Face) cylindrical surface-mount package with axial cathode band marking; no discrete pins - terminals are solderable end caps conforming to MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (end cap, unmarked) | Forward current entry point | Connected to AC input or transformer secondary side; must handle full surge current path |
| Cathode (end cap, marked with band) | Forward current exit / reverse blocking node | Connected to output filter capacitor or load; defines polarity of DC output rail |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable reverse leakage (<5 µA) and long-term reliability under humidity and thermal stress |
| UL 94V-0 plastic case | Meets flammability safety requirements for enclosed power supply enclosures and industrial equipment |
| 1.0 A IO with derating curve | Supports continuous operation up to 75 °C terminal temperature; usable to 55 °C ambient without heatsinking |
| 30 A IFSM surge rating | Withstands 60 Hz line-cycle surges (e.g., cold-start inrush) without parametric shift or failure |
| MELF mechanical form | Provides consistent coplanarity and solder joint strength in reflow processes; compatible with AOI inspection |
Applications
| AC/DC Wall Adapters | Industrial Control Power Supplies |
|---|---|
Use Scenario: Rectifying 50/60 Hz transformer secondary output in Class II isolated AC/DC adapters delivering 5–12 V DC. IC Role / Device Role / Timing Role: Primary power rectifier converting AC to pulsating DC before bulk capacitance and regulation. Use Value: 1.1 V VF minimizes conduction loss at 1 A load; 200 V VRRM accommodates 120 VAC +10% line tolerance with margin. | Use Scenario: Input-stage rectification in DIN-rail mounted 24 V DC power supplies for PLC I/O modules. IC Role / Device Role / Timing Role: High-reliability mains-side rectifier subjected to frequent thermal cycling and industrial ambient temperatures. Use Value: -55 °C to +150 °C Tj range and glass passivation ensure stable performance over 10+ year field life in unventilated enclosures. |
| LED Driver Input Stages | Appliance Power Conversion |
Use Scenario: Bridge or single-diode rectification feeding constant-current LED driver ICs in commercial lighting fixtures. IC Role / Device Role / Timing Role: Front-end rectifier handling line-frequency input prior to PFC or buck converter stage. Use Value: 15 pF Cj reduces high-frequency noise injection into downstream analog control circuitry; UL 94V-0 case meets luminaire fire safety standards. | Use Scenario: Embedded power supply in white goods (refrigerators, washing machines) converting AC mains to 5/12 V logic rails. IC Role / Device Role / Timing Role: Main rectifier in non-isolated auxiliary supply powering microcontrollers and sensors. Use Value: 30 A IFSM withstands motor startup surges on shared AC lines; MELF package resists vibration-induced solder fatigue. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-reliability, surface-mount rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4003-T | Same VRRM (200 V) and IO (1.0 A), but DO-41 through-hole package; higher RJA (~65 K/W) | Requires wave soldering or hand assembly; unsuitable for fully SMT production lines | Select when legacy board layout or manual repair constraints prohibit MELF placement |
| ES1D-E3/57T | Higher VF (1.7 V), lower IR (1.0 µA), SMA package; 1.0 A IO but only 200 V VRRM | Smaller footprint but higher conduction loss; less robust surge rating (25 A vs. 30 A) | Choose for space-constrained designs where leakage is critical and surge exposure is limited |
Compared with 1N4003-T and ES1D-E3/57T, DL4003-13 offers superior thermal performance (50 K/W), MELF SMT compatibility, and higher surge margin-making it optimal for automated, high-volume, thermally demanding power supply designs.
Availability
DL4003-13 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial control power supplies, and LED driver input stages requiring stable component supply, long-life reliability, and consistent MELF package form factor.
Supply support for DL4003-13 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-efficiency power management, signal integrity, and protection solutions.
The DL400x series targets cost-sensitive, high-volume power rectification applications where reliability, thermal stability, and SMT manufacturability are essential-particularly in consumer, industrial, and lighting power supplies.
FAQ
What is the maximum allowable ambient temperature for DL4003-13 at full 1.0 A load?
At 1.0 A DC load, DL4003-13 requires terminal temperature ≤75 °C. With RJA = 50 K/W, maximum ambient temperature is approximately 55 °C without heatsinking. Derating curves (Fig. 1) show usable current drops to ~0.6 A at 70 °C ambient under natural convection.
Can DL4003-13 be used in a full-wave bridge configuration?
Yes-DL4003-13 is a single diode and may be used in discrete full-wave bridge designs. Four units can replace a standard bridge rectifier. Its 200 V VRRM supports 120 VAC RMS inputs (peak ~170 V) with margin; ensure matching Vf and thermal layout across all four devices.
Is the MELF package compatible with standard reflow soldering profiles?
Yes-the MELF body and solderable end caps comply with IPC-J-STD-020 moisture sensitivity level (MSL) 1 and support standard lead-free reflow profiles (peak 260 °C, 60–90 sec above 217 °C). No special prebake or profile adjustments are required.
How does DL4003-13 compare to DL4007-13 in terms of thermal performance?
Both share identical MELF package, RJA (50 K/W), and thermal construction. DL4007-13 has higher VRRM (1000 V) but same IO (1.0 A) and VF (1.1 V), resulting in identical power dissipation and thermal rise at equal current. Junction-to-case path is unchanged across the DL400x family.
DL4003-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MELF
- Operating Temperature - Junction:
- -55°C ~ 150°C
DL4003-13 FAQ
1.How can I place an order for DL4003-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DL4003-13 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 DL4003-13 reliable?
The price and inventory of DL4003-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DL4003-13 is usually 5 days.
3.What payment methods are accepted for DL4003-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DL4003-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DL4003-13?
DL4003-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DL4003-13 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 DL4003-13?
For technical support, including DL4003-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DL4003-13 requirements.
6.How does Aetrix verify that DL4003-13 is sourced from the original manufacturer or authorized distributors?
All DL4003-13 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 DL4003-13 meets industry standards.
7.What is the process for return or replacement of DL4003-13?
All DL4003-13 units undergo pre-shipment inspection (PSI). If there is an issue with DL4003-13, 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 DL4003-13 part is unused and in its original packaging.
Return procedure for DL4003-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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