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Diodes Incorporated UF5GD1-13
- Part No.:
- UF5GD1-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
UF5GD1-13.pdf
- Description:
- DIODE GEN PURP 400V 5A TO252
- Quantity:
- Payment:
- Shipping:
Inventory:6,727
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Product details
Overview
UF5GD1-13 from Diodes Incorporated is a 400 V, 5 A surface-mount ultra-fast recovery rectifier in TO252 (DPAK) package, optimized for high-frequency switching power supplies. It delivers 1.4 V forward voltage at 5 A and 25°C, 35 ns reverse recovery time, and 10 µA reverse leakage at 400 V - enabling efficient rectification and freewheeling in compact AC/DC adapters and LED drivers.
For engineers reviewing the UF5GD1-13 datasheet, UF5GD1-13 pinout, UF5GD1-13 application, or UF5GD1-13 equivalent, key selection criteria include its 400 V peak repetitive reverse voltage, 150 A non-repetitive surge rating, thermal resistance of 2.0°C/W (junction-to-case), soft recovery behavior, and RoHS-compliant green packaging suitable for industrial and consumer power conversion designs.
Technical Context
This ultra-fast recovery rectifier employs a planar epitaxial silicon junction structure with controlled carrier lifetime to achieve soft reverse recovery characteristics - minimizing EMI and voltage overshoot during turn-off in high-frequency SMPS topologies. Its low Qrr and trr support operation up to several hundred kHz without snubber circuits.
The device is rated for continuous 5 A average forward current at 25°C ambient, derating to ~3.5 A at 100°C on FR4 PCB (RθJA = 65°C/W), or ~4.8 A at 100°C when mounted on aluminum substrate (RθJA = 16°C/W). Polarity is unidirectional with anode-cathode configuration confirmed by top-view marking and pin-out diagram.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - supports DC blocking in 230 VAC input rectifiers with safety margin |
| IO(AV) | 5 A - enables single-device use in mid-power 30–60 W SMPS outputs |
| VF @ 5A, 25°C | 1.4 V - reduces conduction loss to ~7 W per diode at full load |
| trr | 35 ns typical - allows clean switching in 200–500 kHz flyback and PFC stages |
| IR @ 400V, 25°C | 10 µA - ensures minimal standby power loss in battery charger no-load modes |
| RθJC | 2.0 °C/W - enables direct heatsinking to PCB copper pour or metal core for thermal management |
| IFSM | 150 A - withstands inrush surges from bulk capacitor charging without failure |
Pinout & Package
Package: TO252 (DPAK), surface-mount, thermally enhanced plastic case with exposed cathode pad. Anode and cathode terminals are on left and right leads respectively; the center tab is electrically connected to the cathode and serves as primary heat path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Left Lead | Anode | Main current entry point; connects to transformer secondary or switch node in freewheeling path |
| Center Tab | Cathode / Thermal Pad | Primary current exit and thermal interface; must be soldered to large copper area for RθJC = 2.0°C/W |
| Right Lead | Cathode | Secondary cathode connection; used for layout symmetry and mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast soft recovery | trr = 35 ns with low stored charge - suppresses ringing and reduces EMI filter burden |
| Low VF at high temperature | VF = 1.0 V @ 5 A, 125°C - maintains efficiency in thermally constrained LED driver enclosures |
| Green, halogen-free construction | <900 ppm Br/Cl, <1000 ppm Sb - meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1 |
| High surge robustness | 150 A IFSM (8.3 ms half-sine) - survives repeated cold-start events in universal-input adapters |
Applications
| LED Driver Secondary Rectification | USB-C PD Adapter Output Stage |
|---|---|
Use Scenario: High-efficiency constant-current output rectification in isolated flyback LED drivers for commercial lighting. IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time; handles 5 A DC output with minimal conduction loss. Use Value: 1.4 V VF and 35 ns trr reduce thermal stress and enable smaller heatsinks versus standard fast recovery diodes. | Use Scenario: Output rectification in 45–65 W USB-C Power Delivery adapters with dual-output capability. IC Role / Device Role / Timing Role: Primary output rectifier in synchronous or quasi-resonant flyback topology; operates at 200–300 kHz. Use Value: Soft recovery minimizes voltage spikes across primary-side MOSFET, improving reliability without added snubbers. |
| Industrial SMPS Auxiliary Supply | Home Appliance AC/DC Conversion |
Use Scenario: +12 V/5 V auxiliary rail generation in PLC power modules requiring long-term reliability. IC Role / Device Role / Timing Role: Low-leakage (10 µA) rectifier for bias supply; operates continuously at 60–85°C ambient. Use Value: Low IR ensures stable startup and reduced no-load power consumption over full temperature range. | Use Scenario: Input rectification in compact AC/DC converters for smart refrigerators and washing machine control boards. IC Role / Device Role / Timing Role: Bridge replacement or single-phase rectifier handling 5 A average current with surge tolerance. Use Value: TO252 package enables automated assembly and provides superior thermal performance vs. DO-214AB in confined chassis space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH5L06S | 600 V VRRM, 5 A IO, VF = 1.55 V @ 5 A, trr = 30 ns | Higher voltage rating suits 400 VAC industrial inputs; slightly higher VF increases conduction loss | Prefer when system requires >400 V blocking margin or operates at elevated line voltages |
| MBR540 | Schottky, 40 V VRRM, 5 A IO, VF = 0.55 V @ 5 A, no reverse recovery | Not suitable for 400 V applications; limited to low-voltage DC-DC outputs | Select only for secondary-side low-VF rectification where reverse voltage ≤40 V |
Compared with STTH5L06S and MBR540, UF5GD1-13 uniquely balances 400 V blocking, ultra-fast soft recovery, and TO252 thermal performance - making it optimal for cost-sensitive, mid-power AC/DC front-end and LED driver rectification where Schottky voltage limits or higher VRRM overhead are not required.
Availability
UF5GD1-13 is available at Aetrix Electronics and suitable for LED lighting drivers, USB-C power adapters, and industrial SMPS auxiliary supplies requiring stable component supply and RoHS-compliant green packaging.
Supply support for UF5GD1-13 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 North America.
The UF5GD1 belongs to Diodes' ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency AC/DC and DC/DC power conversion in consumer, industrial, and lighting applications.
FAQ
What is the maximum junction temperature for UF5GD1-13?
The absolute maximum junction temperature is +150°C, with continuous operation supported from –65°C to +150°C. Derating curves in the datasheet show that at 100°C ambient on FR4 PCB, the device sustains ~3.5 A average forward current while maintaining safe thermal margins under typical convection cooling conditions.
Is UF5GD1-13 pin-compatible with other TO252 ultra-fast rectifiers?
Yes - UF5GD1-13 uses standard TO252 (DPAK) footprint with anode-left, cathode-center-tab/right configuration. It shares identical land pattern and mounting requirements with industry-standard TO252 rectifiers like STTH5L06S and FFPF5065DT, enabling drop-in replacement where voltage/current ratings align.
Does UF5GD1-13 require a heatsink for 5 A operation?
No external heatsink is required if mounted on ≥1 in² of 2 oz copper on FR4 with thermal vias to inner layers. At 25°C ambient, RθJA = 65°C/W yields ~325°C rise at 5 A - exceeding rating - so derating or enhanced PCB copper is mandatory. With aluminum substrate (RθJA = 16°C/W), 5 A is sustainable at ≤110°C ambient.
What does "soft recovery" mean for UF5GD1-13?
Soft recovery refers to controlled minority-carrier recombination during reverse turn-off, resulting in gradual current decay rather than abrupt collapse. This reduces di/dt-induced voltage spikes and EMI. For UF5GD1-13, soft recovery is achieved via lifetime control and manifests as low reverse recovery charge (Qrr) and absence of hard snap-off in oscilloscope waveforms at IF = 0.5 A, IR = 1.0 A.
UF5GD1-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.4 V @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 45 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 V
- Capacitance @ Vr, F:
- 61pF @ 10V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252 (DPAK)
- Operating Temperature - Junction:
- -65°C ~ 150°C
UF5GD1-13 FAQ
1.How can I place an order for UF5GD1-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for UF5GD1-13 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 UF5GD1-13 reliable?
The price and inventory of UF5GD1-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UF5GD1-13 is usually 5 days.
3.What payment methods are accepted for UF5GD1-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UF5GD1-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UF5GD1-13?
UF5GD1-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UF5GD1-13 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 UF5GD1-13?
For technical support, including UF5GD1-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UF5GD1-13 requirements.
6.How does Aetrix verify that UF5GD1-13 is sourced from the original manufacturer or authorized distributors?
All UF5GD1-13 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 UF5GD1-13 meets industry standards.
7.What is the process for return or replacement of UF5GD1-13?
All UF5GD1-13 units undergo pre-shipment inspection (PSI). If there is an issue with UF5GD1-13, 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 UF5GD1-13 part is unused and in its original packaging.
Return procedure for UF5GD1-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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