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Taiwan Semiconductor Corporation MUR420SHM6G
- Part No.:
- MUR420SHM6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR420SHM6G.pdf
- Description:
- DIODE GEN PURP 200V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,777
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Product details
Overview
MUR420SHM6G from Taiwan Semiconductor is a 4A, 200V ultra-fast recovery surface-mount rectifier in DO-214AB (SMC) package, featuring 25ns reverse recovery time, 0.875V max forward voltage at 4A/25°C, and 75A peak surge current - deployed in high-frequency switching mode power supplies for telecom and computing infrastructure.
For engineers reviewing the MUR420SHM6G datasheet, MUR420SHM6G pinout, MUR420SHM6G application, or MUR420SHM6G equivalent, key selection criteria include ultra-fast trr (25ns), low VF at rated IF, thermal resistance (RθJA = 45°C/W), JESD201 Class 2 whisker compliance, and DO-214AB mechanical compatibility with automated SMT assembly.
Technical Context
This discrete silicon rectifier uses a glass-passivated PN junction optimized for high-efficiency freewheeling and output rectification in DC-DC converters operating above 50kHz. Its 25ns reverse recovery time minimizes switching losses during turn-off transitions under 0.5A forward / 1.0A reverse test conditions.
The device operates across -55°C to +175°C junction temperature range, supports 4A continuous forward current with derating above 75°C case temperature, and exhibits 65pF junction capacitance at 1MHz/4V - enabling stable performance in high-frequency resonant and hard-switched topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous Forward Current) | 4 A - supports sustained conduction in 48V–12V secondary-side rectification without forced cooling |
| VRRM (Repetitive Peak Reverse Voltage) | 200 V - rated for use in 120VAC input-derived SMPS with margin against line transients |
| trr (Reverse Recovery Time) | 25 ns - reduces switching loss and EMI in >100kHz flyback and forward converters |
| VF (Max Forward Voltage @ 4A, 25°C) | 0.875 V - limits conduction loss to ≤3.5W at full load, easing thermal design |
| RθJA (Junction-to-Ambient) | 45 °C/W - enables 1.5W dissipation with ≤70°C ambient rise on standard 1-in² copper pad |
| IFSM (Peak Surge Current) | 75 A - withstands cold-start inrush and transient overloads per IEC 61000-4-5 |
| CJ (Junction Capacitance) | 65 pF - maintains low capacitive loading on high-side gate drivers in synchronous rectifier designs |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-die configuration with cathode band marking. Matte tin-plated leads, UL 94V-0 molding compound, JESD201 Class 2 whisker compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to switch node or transformer secondary winding; must handle 75A surge without bond wire fusing |
| Cathode | Forward current exit point | Connected to output rail; polarity marked by visible band; requires low-inductance PCB routing to minimize ringing |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability under humidity and thermal cycling per J-STD-020 Level 1 moisture sensitivity |
| Ultra-fast 25ns trr | Reduces reverse recovery charge (Qrr) to <15nC, lowering diode-induced MOSFET turn-on loss in quasi-resonant designs |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
| DO-214AB (SMC) package | Enables automated pick-and-place with industry-standard tape-and-reel (3,000 pcs/reel) and supports ≥1.5W power dissipation |
Applications
| Server PSU Output Rectification | Telecom DC-DC Converter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in 80 PLUS Titanium 48V–12V isolated DC-DC modules delivering up to 1200W. IC Role / Device Role / Timing Role: Ultra-fast power rectifier handling continuous 4A output current with minimal conduction and switching loss. Use Value: 0.875V VF and 25ns trr reduce total power loss by ≥1.2W vs. standard fast recovery diodes, improving system efficiency by 0.4% at full load. | Use Scenario: Freewheeling path in 48V input buck-derived intermediate bus converters for 5G baseband units. IC Role / Device Role / Timing Role: Clamp diode providing low-loss return path during high-side MOSFET off-time in 300kHz–1MHz operation. Use Value: 65pF CJ and 25ns trr suppress voltage overshoot and EMI generation, eliminating need for snubbers in compact PCB layouts. |
| Industrial PLC Power Supply Input Stage | Laptop Adapter Secondary Rectification |
Use Scenario: Input rectification in universal AC-input (85–264VAC) offline SMPS powering programmable logic controllers. IC Role / Device Role / Timing Role: Bridge leg component in GPP configuration or standalone rectifier in flyback output stage. Use Value: 200V VRRM with 1.5× safety margin ensures robustness against 1.2kV line surges per IEC 61000-4-5, extending field lifetime. | Use Scenario: Output rectification in compact 65W GaN-based laptop adapters operating at 200kHz+. IC Role / Device Role / Timing Role: High-frequency rectifier replacing Schottky diodes where 200V rating and low Qrr are critical. Use Value: 75A IFSM withstands repeated 100ms startup surges; RθJC = 8.5°C/W enables direct thermal coupling to heatsink via SMC body. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L02S | Same DO-214AB package, 4A/200V, but trr = 35ns (vs. 25ns), VF = 0.95V max | Slightly higher conduction and switching loss; suitable where 10ns trr margin is acceptable | Select when prioritizing ST's supply chain continuity over minimal trr advantage |
| ON Semi MUR420E | Identical electrical specs (4A/200V/25ns), same DO-214AB, but lead finish is SnPb (non-RoHS) | Not suitable for RoHS-compliant production; requires exemption documentation | Choose only for legacy repair or non-regulated markets requiring SnPb solder compatibility |
Compared with STTH4L02S and MUR420E, the MUR420SHM6G delivers the lowest trr (25ns) among RoHS-compliant 4A/200V ultra-fast rectifiers in DO-214AB, enabling higher-frequency operation with reduced EMI and thermal stress in next-gen power supplies.
Availability
MUR420SHM6G is available at Aetrix Electronics and suitable for server power supplies, telecom DC-DC converters, and industrial PLC power stages requiring stable component supply, RoHS/halogen-free compliance, and automated SMT placement support.
Supply support for MUR420SHM6G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power management and industrial markets since 1979.
The MUR420SHM6G belongs to TSC's MUR4xS ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency AC-DC and DC-DC conversion in computing, communications, and industrial equipment.
FAQ
What is the maximum junction temperature rating for MUR420SHM6G?
The MUR420SHM6G has a maximum junction temperature (TJ MAX) of +175°C, allowing operation in high-temperature environments such as enclosed server PSUs or industrial motor drives. This rating is validated per JEDEC standards and enables reliable performance when mounted on thermally optimized PCBs with ≥1-in² copper pour. The MUR420SHM6G maintains specified VF and trr parameters up to this limit.
Does MUR420SHM6G support automated SMT placement?
Yes, the MUR420SHM6G is designed for automated surface-mount placement with its DO-214AB (SMC) package, matte tin-plated leads, and J-STD-002 solderability certification. It meets moisture sensitivity level 1 per J-STD-020, eliminating bake requirements before reflow. The MUR420SHM6G is supplied in 3,000-piece tape-and-reel format compatible with standard pick-and-place machines.
How does the reverse recovery time of MUR420SHM6G compare to standard fast recovery diodes?
The MUR420SHM6G features a reverse recovery time (trr) of 25ns, significantly faster than standard fast recovery diodes (typically 50–100ns). This reduction lowers switching losses and EMI in high-frequency converters. Measured under IF = 0.5A, IR = 1.0A, Irr = 0.25A conditions, the MUR420SHM6G's trr enables efficient operation up to 1MHz in resonant topologies - a key differentiator versus generic FRDs.
Is MUR420SHM6G RoHS and halogen-free compliant?
Yes, the MUR420SHM6G is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants, and lead content is below 1000 ppm. This compliance is verified through material declarations and third-party testing, making the MUR420SHM6G suitable for green electronics manufacturing in North America, Europe, and Asia.
What is the thermal resistance from junction to case for MUR420SHM6G?
The MUR420SHM6G has a junction-to-case thermal resistance (RθJC) of 8.5°C/W, measured under standard JEDEC test conditions. This low value allows efficient heat transfer from the die to the PCB copper or external heatsink when the SMC body is thermally anchored. Combined with RθJA = 45°C/W, the MUR420SHM6G supports 1.5W continuous dissipation with ≤70°C ambient temperature rise on a 1-in² 2-oz copper pad.
MUR420SHM6G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 65pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 175°C
MUR420SHM6G FAQ
1.How can I place an order for MUR420SHM6G through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR420SHM6G 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 MUR420SHM6G reliable?
The price and inventory of MUR420SHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR420SHM6G is usually 5 days.
3.What payment methods are accepted for MUR420SHM6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR420SHM6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR420SHM6G?
MUR420SHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR420SHM6G 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 MUR420SHM6G?
For technical support, including MUR420SHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR420SHM6G requirements.
6.How does Aetrix verify that MUR420SHM6G is sourced from the original manufacturer or authorized distributors?
All MUR420SHM6G 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 MUR420SHM6G meets industry standards.
7.What is the process for return or replacement of MUR420SHM6G?
All MUR420SHM6G units undergo pre-shipment inspection (PSI). If there is an issue with MUR420SHM6G, 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 MUR420SHM6G part is unused and in its original packaging.
Return procedure for MUR420SHM6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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