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Diodes Incorporated MURS460C
- Part No.:
- MURS460C
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MURS460C.pdf
- Description:
- DIODE GEN PURP 600V 4A SMC TR 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,019
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Product details
Overview
MURS460C from Diodes Incorporated is a 4.0A, 600V surface-mount super-fast rectifier diode with 50ns reverse recovery time, 1.28V forward voltage at 4A, and 10μA leakage current at 600V. It serves as a boost diode in discontinuous/critical-mode PFC circuits and as a freewheeling diode in switch-mode power supplies.
For engineers reviewing the MURS460C datasheet, MURS460C pinout, MURS460C application, or MURS460C equivalent, key selection criteria include its 600V VRRM, 50ns tRR, SMC package thermal performance (RθJC = 7°C/W), surge rating (110A IFSM), and RoHS-compliant lead-free plating.
Technical Context
The MURS460C employs a glass-passivated silicon die optimized for high-frequency switching in AC/DC and DC/DC converters. Its super-fast recovery (tRR = 50ns) minimizes switching losses during turn-off, while low Qrr reduces EMI generation in PFC stages.
Designed for surface-mount assembly on PCBs with 12mm × 12mm copper pads, it delivers RθJC = 7°C/W and supports continuous operation from –55°C to +150°C. The cathode-band polarity marking and SMC outline ensure unambiguous orientation during automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - blocks up to 600V repetitive reverse voltage without breakdown |
| IO | 4.0 A - average rectified output current at TC = +120°C |
| tRR | 50 ns - enables efficient operation in >100 kHz PFC and SMPS topologies |
| VF | 1.28 V @ 4A - limits conduction loss to ~5.1W at full rated current |
| IR | 10 μA @ 600V, 25°C - ensures minimal standby power loss in high-impedance bias networks |
| IFSM | 110 A @ 8.3ms - withstands inrush surges common in offline power startup |
| RθJC | 7 °C/W - allows direct heatsinking via PCB copper for thermal management |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with UL 94V-0 flammability rating, matte tin-plated terminals, cathode band polarity marking, and 0.21g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to source-side of switching node (e.g., MOSFET drain in boost) |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to output rail or energy storage node (e.g., PFC output capacitor) |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability under thermal cycling and humidity exposure |
| Super-fast 50ns recovery | Reduces switching loss and EMI in >100 kHz PFC and resonant converters |
| 110A non-repetitive surge rating | Survives line-voltage transients and cold-start inrush without degradation |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive environmental compliance requirements |
| SMC package with RθJC = 7°C/W | Enables direct thermal coupling to PCB copper for compact, fanless designs |
Applications
| Server Power Supply PFC Stage | Industrial SMPS Freewheeling |
|---|---|
Use Scenario: Boost diode in 1–3 kW telecom/server PFC front-end operating in critical conduction mode. IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer from AC line to bulk capacitor during MOSFET off-time. Use Value: 50ns tRR prevents reverse recovery tail current, reducing MOSFET voltage overshoot and improving efficiency by ≥0.4% at full load. | Use Scenario: Freewheeling diode across primary-side inductive loads in 500W industrial DC/DC converters. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when main switch turns off, clamping inductive kickback. Use Value: 1.28V VF limits conduction loss to <5.1W, supporting ambient operation up to +85°C without forced air. |
| LED Driver Secondary Rectification | Automotive On-Board Charger (OBC) Auxiliary Supply |
Use Scenario: Output rectifier in isolated flyback LED drivers delivering 100–200W to high-brightness arrays. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC, handling peak currents up to 6A. Use Value: 110A IFSM rating accommodates transient overloads during lamp short-circuit events without failure. | Use Scenario: Auxiliary DC/DC supply rectifier in 6.6kW OBC systems powering control logic and gate drivers. IC Role / Device Role / Timing Role: High-reliability rectifier in isolated auxiliary converter operating continuously at +105°C ambient. Use Value: –55°C to +150°C operating range and AEC-Q101-capable process ensure functional stability across vehicle thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L06D | VF = 1.35V @ 4A; tRR = 60ns; same SMC package | Slightly higher conduction loss and slower recovery increase switching loss in >150 kHz PFC | Acceptable where cost sensitivity outweighs 0.5% efficiency penalty at full load |
| ES4D | VRRM = 200V; IO = 4A; tRR = 35ns; SMA package | Limited to low-voltage outputs (<200V); smaller footprint but lower thermal capability (RθJC ≈ 15°C/W) | Only suitable for secondary-side rectification in low-output-voltage SMPS |
Compared with STTH4L06D and ES4D, the MURS460C uniquely balances 600V blocking, 50ns recovery, and SMC thermal performance-making it optimal for primary-side PFC and high-voltage freewheeling where both voltage headroom and thermal margin are critical.
Availability
MURS460C is available at Aetrix Electronics and suitable for server power supply PFC stages, industrial SMPS freewheeling, and automotive on-board charger auxiliary supplies requiring stable component supply and long-term manufacturability.
Supply support for MURS460C 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 MURS460C belongs to Diodes' super-fast rectifier product line, engineered specifically for high-frequency AC/DC conversion in energy-efficient power supplies and industrial power systems.
FAQ
What is the maximum junction temperature for continuous operation?
The MURS460C has a specified operating junction temperature range of –55°C to +150°C. Continuous operation at TJ = +150°C requires maintaining TC ≤ +120°C per the IO derating curve, achievable using ≥12 mm × 12 mm 1 oz copper pad and minimizing thermal interface resistance to heatsink or chassis.
Is the MURS460C qualified for automotive applications?
The MURS460C is not AEC-Q101 qualified out-of-box, but Diodes offers automotive-grade variants (e.g., MURS460C-A) with PPAP documentation, IATF 16949 manufacturing, and extended test coverage. Standard MURS460C may be used in non-safety-critical automotive subsystems pending customer qualification.
How does the SMC package compare thermally to DPAK or TO-252?
The SMC package provides RθJC = 7°C/W-comparable to DPAK (≈6–8°C/W) and superior to TO-252 (≈10–12°C/W). Its low profile and dual heat-spreading leads enable better PCB-level thermal spreading than TO-252, though DPAK offers slightly better case-to-heatsink contact in bolted configurations.
Can MURS460C replace standard FR series fast rectifiers in existing designs?
Yes-MURS460C can directly replace FR407 or UF4007 in SMC footprints, offering 50ns tRR vs. 100–200ns and lower VF (1.28V vs. 1.7V). This reduces switching loss and improves efficiency, especially in PFC and high-frequency SMPS, without layout changes.
MURS460C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 1.28 V @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 600 V
- Capacitance @ Vr, F:
- 40pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 150°C
MURS460C FAQ
1.How can I place an order for MURS460C through Aetrix?
Please submit a Request for Quotation (RFQ) for MURS460C 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 MURS460C reliable?
The price and inventory of MURS460C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MURS460C is usually 5 days.
3.What payment methods are accepted for MURS460C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MURS460C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MURS460C?
MURS460C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MURS460C 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 MURS460C?
For technical support, including MURS460C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MURS460C requirements.
6.How does Aetrix verify that MURS460C is sourced from the original manufacturer or authorized distributors?
All MURS460C 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 MURS460C meets industry standards.
7.What is the process for return or replacement of MURS460C?
All MURS460C units undergo pre-shipment inspection (PSI). If there is an issue with MURS460C, 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 MURS460C part is unused and in its original packaging.
Return procedure for MURS460C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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