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Diodes Incorporated DL4936-13
- Part No.:
- DL4936-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
DL4936-13.pdf
- Description:
- DIODE GEN PURP 400V 1A MELF
- Quantity:
- Payment:
- Shipping:
Inventory:8,502
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Product details
Overview
DL4936-13 from Diodes Incorporated is a surface-mount fast recovery rectifier diode with 400 V peak repetitive reverse voltage (VRRM), 1.0 A average forward rectified current (IO) at TT = 75°C, and 1.2 V maximum instantaneous forward voltage at IF = 1.0 A. It features glass passivation, low leakage (<5.0 µA), and 200 ns maximum reverse recovery time (trr), used in AC/DC input stage rectification for industrial power supplies and LED drivers.
For engineers reviewing the DL4936-13 datasheet, DL4936-13 pinout, DL4936-13 application, or DL4936-13 equivalent, key selection criteria include VRRM derating for capacitive loads (−20% IO), thermal derating per Fig. 2, MELF package solderability per MIL-STD-202 Method 208, and RoHS-compliant matte tin finish.
Technical Context
This single-phase, half-wave rectifier is rated for 60 Hz resistive or inductive loads, with defined derating for capacitive loads. Its 200 ns trr enables efficient switching in offline SMPS front-end stages up to ~100 kHz.
The MELF package provides high thermal reliability and uniform current distribution, while glass passivation ensures stable IRM < 5.0 µA at rated VR and robust moisture resistance over −65°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage before breakdown; sets safe AC input voltage limit (e.g., 280 V RMS). |
| IO @ TT = 75°C | 1.0 A - Continuous DC output current capability under heatsink-referenced thermal condition. |
| VFM @ IF = 1.0 A | 1.2 V - Forward conduction loss at rated load; determines I²R heating and efficiency in rectifier stage. |
| trr | 200 ns - Reverse recovery time; limits minimum switching frequency and affects EMI in flyback/forward converters. |
| IRM @ VR | 5.0 µA - Max DC reverse leakage at rated blocking voltage; critical for low-power standby and high-impedance bias networks. |
| CT @ 1 MHz, 4 V | 15 pF - Junction capacitance; influences high-frequency noise coupling and snubber design. |
Pinout & Package
Package: MELF (Metal Electrode Leadless Face), cylindrical glass-passivated surface-mount case, UL 94V-0 rated, 0.25 g mass, cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to AC input or transformer secondary; must withstand surge current up to 30 A (8.3 ms half-sine). |
| Cathode | Forward current exit node | Marked with band; connects to bulk capacitor or downstream converter; carries full IO and handles reverse blocking. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery (trr ≤ 200 ns) | Enables use in higher-frequency rectification without excessive switching loss or ringing. |
| Glass passivated junction | Ensures long-term stability of IRM and VRRM under humidity and thermal cycling stress. |
| Low VFM (1.2 V @ 1.0 A) | Reduces conduction loss by ~15% vs. standard 1N4007 (1.4 V), improving thermal margin in compact designs. |
| MELF package with 94V-0 rating | Supports automated reflow assembly and meets safety standards for insulation and flammability. |
Applications
| AC/DC Adapter Input Stage | Industrial LED Driver Rectification |
|---|---|
Use Scenario: 230 VAC input rectification feeding bulk capacitor in 15–30 W isolated flyback LED driver. IC Role / Device Role / Timing Role: Primary-side unidirectional current path; blocks reverse voltage during negative AC half-cycle. Use Value: 400 V VRRM safely covers 230 VAC × √2 ≈ 325 V peak with margin; 200 ns trr minimizes switching noise coupled into feedback circuitry. | Use Scenario: Bridge rectifier leg in non-isolated buck-PFC LED driver with 120 VAC input. IC Role / Device Role / Timing Role: Half-wave rectifier in voltage-doubler or single-leg configuration for PFC pre-regulator. Use Value: Low 1.2 V VFM reduces conduction loss at 1.0 A average, improving efficiency >1% over standard recovery diodes. |
| UPS Battery Charger Input | Motor Control Auxiliary Supply |
Use Scenario: Input rectification for 24 V/5 A battery charger in line-interactive UPS with transformer-coupled AC input. IC Role / Device Role / Timing Role: Converts transformer secondary AC to DC for charging circuit; operates continuously at elevated ambient temperature. Use Value: 1.0 A IO rating sustained at TT = 75°C supports continuous operation without forced cooling; −65°C to +150°C Tj range accommodates enclosure hot spots. | Use Scenario: Auxiliary 12 V DC supply rectification for gate driver ICs and MCU in 3-phase BLDC motor controller. IC Role / Device Role / Timing Role: Provides isolated low-power DC rail from auxiliary winding; must survive inductive kickback and ESD events. Use Value: Glass passivation and 30 A IFSM rating ensure robustness against transient overcurrent from winding inductance and layout parasitics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | VRRM = 600 V, trr = 150 ns, IO = 1.0 A, DO-214AA package | Higher VRRM and faster trr; larger footprint and lower thermal resistance than MELF | Preferred where higher voltage margin or tighter EMI control is required; requires PCB pad redesign. |
| ES1J | VRRM = 600 V, trr = 35 ns, IO = 1.0 A, SMA package | Ultra-fast recovery but lower surge rating (IFSM = 30 A same, but shorter thermal time constant) | Better for high-frequency PFC; less robust under sustained overload or high-temperature ambient. |
Compared with DL4936-13, STTH1L06S offers higher voltage headroom and slightly faster recovery in a more thermally capable package, while ES1J delivers superior speed at the cost of reduced ruggedness-making DL4936-13 optimal for cost-sensitive, thermally constrained 400 V industrial rectification.
Availability
DL4936-13 is available at Aetrix Electronics and suitable for industrial power supplies, LED lighting drivers, and UPS battery chargers requiring stable component supply and RoHS-compliant MELF packaging.
Supply support for DL4936-13 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, manufacturing, and sales operations across Asia, Europe, and the Americas.
The DL493x series targets cost-effective, high-reliability AC/DC front-end rectification in industrial, lighting, and consumer power applications, emphasizing thermal robustness and process consistency in MELF packaging.
FAQ
What is the maximum allowable junction temperature for DL4936-13?
The absolute maximum junction temperature is +150°C, with storage temperature matching this range. Derating begins at terminal temperature >75°C per Fig. 2; at TT = 100°C, IO drops to ~0.65 A. Thermal resistance from junction-to-case is not specified, but MELF geometry supports direct PCB copper pour heat spreading.
Is DL4936-13 compatible with lead-free reflow processes?
Yes-DL4936-13 uses matte tin plating compliant with JEDEC J-STD-020 moisture sensitivity level 1 and withstands peak reflow temperatures up to 260°C. The MELF body is rated for UL 94V-0 and passes MIL-STD-202 Method 208 solderability testing.
How does capacitive load affect DL4936-13 current rating?
For capacitive-input filter loads, the average forward current rating must be derated by 20%, reducing IO from 1.0 A to 0.8 A at TT = 75°C. This accounts for higher peak currents and increased thermal stress caused by zero-crossing inrush into the bulk capacitor.
Can DL4936-13 replace a 1N4007 in existing designs?
No-DL4936-13 is a fast recovery diode (trr = 200 ns), whereas 1N4007 is general-purpose (trr > 2 µs). Substitution may cause excessive EMI or MOSFET gate drive issues in switching circuits. It can replace 1N4007 only in purely linear, low-frequency applications with no switching nodes nearby.
DL4936-13 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):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 200 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MELF
- Operating Temperature - Junction:
- -65°C ~ 150°C
DL4936-13 FAQ
1.How can I place an order for DL4936-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DL4936-13 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 DL4936-13 reliable?
The price and inventory of DL4936-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DL4936-13 is usually 5 days.
3.What payment methods are accepted for DL4936-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DL4936-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DL4936-13?
DL4936-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DL4936-13 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 DL4936-13?
For technical support, including DL4936-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DL4936-13 requirements.
6.How does Aetrix verify that DL4936-13 is sourced from the original manufacturer or authorized distributors?
All DL4936-13 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 DL4936-13 meets industry standards.
7.What is the process for return or replacement of DL4936-13?
All DL4936-13 units undergo pre-shipment inspection (PSI). If there is an issue with DL4936-13, 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 DL4936-13 part is unused and in its original packaging.
Return procedure for DL4936-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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