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Taiwan Semiconductor Corporation MUR420SHR7G
- Part No.:
- MUR420SHR7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR420SHR7G.pdf
- Description:
- DIODE GEN PURP 200V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,027
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Product details
Overview
MUR420SHR7G 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 - used for high-frequency freewheeling and output rectification in SMPS for telecom and computing power supplies.
For engineers reviewing the MUR420SHR7G datasheet, MUR420SHR7G pinout, MUR420SHR7G application, or MUR420SHR7G equivalent, key selection criteria include VRRM=200V, trr=25ns, VF≤0.875V @4A, RθJA=45°C/W, and DO-214AB mechanical compatibility with automated SMT assembly.
Technical Context
This single-die ultra-fast rectifier uses glass-passivated junction technology to achieve low reverse recovery charge and minimal switching loss in hard-switched topologies. Its 25ns trr and 65pF junction capacitance enable stable operation up to several hundred kHz in DC-DC converters and PFC stages.
The device operates across -55°C to +175°C junction temperature range, with thermal resistance of 8.5°C/W (junction-to-case) and 45°C/W (junction-to-ambient), supporting high-power-density designs where thermal management is constrained by board-level airflow and copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback/clamp circuits |
| IF(AV) | 4 A - Average forward current rating at TC=75°C; determines continuous conduction capability in output stage |
| trr | 25 ns - Reverse recovery time at IF=0.5A, IR=1.0A, Irr=0.25A; enables efficient operation in >200 kHz SMPS |
| VF | 0.875 V max @ 4A, 25°C - Forward voltage drop; directly impacts conduction loss and thermal load in high-current paths |
| RθJA | 45 °C/W - Junction-to-ambient thermal resistance; sets minimum required PCB copper area and airflow for thermal compliance |
| IFSM | 75 A - Non-repetitive peak surge current (8.3ms half-sine); supports inrush and fault-current handling in AC-input stages |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by band, matte tin-plated leads, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to switch node or transformer secondary; must withstand full reverse voltage when off |
| Cathode | Output terminal for forward conduction | Connected to output capacitor or filter inductor; polarity marking critical for correct PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability under thermal cycling and humidity exposure without hermetic sealing |
| Ultra-fast 25ns recovery | Reduces switching loss and EMI generation in high-frequency converters compared to standard fast rectifiers |
| DO-214AB (SMC) package | Supports automated pick-and-place and reflow soldering; provides 0.25g mass and UL 94V-0 mold compound |
| Junction temperature range –55°C to +175°C | Allows operation in industrial and telecom environments without derating below ambient 85°C |
Applications
| Telecom Power Rectification | Server SMPS Output Stage |
|---|---|
Use Scenario: Secondary-side rectification in 48V input telecom DC-DC modules delivering 12V/3.3V outputs. IC Role / Device Role / Timing Role: Ultra-fast freewheeling diode synchronizing with MOSFET switching at 300–500 kHz. Use Value: 25ns trr minimizes reverse recovery loss and improves efficiency by ≥0.8% vs. standard fast rectifiers at 400 kHz. | Use Scenario: Output rectification in multiphase VRMs powering high-end CPUs in data center servers. IC Role / Device Role / Timing Role: High-current unidirectional conduction path with low VF and robust IFSM margin. Use Value: 0.875V VF at 4A reduces conduction loss by ~0.7W per diode versus 1.1V alternatives, lowering thermal stress on PCB. |
| Industrial AC-DC Adapter | LED Driver Flyback Output |
Use Scenario: Input bridge or output rectifier in universal-input (85–265VAC) industrial adapters rated 24–48V/3A. IC Role / Device Role / Timing Role: Primary-side clamp diode and secondary-side rectifier in quasi-resonant flyback topology. Use Value: 75A IFSM withstands line surges and startup inrush; 175°C TJ rating ensures reliability under sealed enclosure conditions. | Use Scenario: Output rectifier in isolated flyback LED drivers for street lighting (36–72V, 0.7A). IC Role / Device Role / Timing Role: High-efficiency, low-noise rectification with minimal reverse recovery ringing. Use Value: 65pF CJ and 25ns trr suppress high-frequency oscillation, reducing EMI filter component count by one stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L06S | VRRM=600V, trr=35ns, VF=0.95V @4A - higher voltage rating but slower recovery and higher VF | Better suited for 400V+ bus applications; less optimal for 200V systems requiring minimal switching loss | Select when system requires higher reverse margin and can tolerate 10ns longer trr and 80mV higher VF |
| ON Semi MUR420E | VRRM=200V, trr=25ns, VF=0.87V @4A - identical electrical specs, same DO-214AB package, RoHS/halogen-free compliant | Drop-in replacement with same footprint, thermal profile, and qualification level; minor marking difference only | Preferred for dual-sourcing where identical performance and mechanical fit are mandatory |
Compared with STTH4L06S and MUR420E, the MUR420SHR7G offers best-in-class trr/VF trade-off at 200V, while MUR420E provides true functional and mechanical equivalence, and STTH4L06S trades speed for higher voltage headroom.
Availability
MUR420SHR7G is available at Aetrix Electronics and suitable for telecom power supplies, server SMPS, industrial AC-DC adapters, and LED driver designs requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for MUR420SHR7G 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 industrial, computing, and telecom markets since 1979.
The MUR420SHR7G belongs to TSC's MUR4xS ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency switching power conversion where low trr, low VF, and robust thermal performance are critical.
FAQ
What is the maximum junction temperature rating for MUR420SHR7G?
The MUR420SHR7G has a maximum junction temperature (TJ MAX) of +175°C, allowing reliable operation in high-temperature environments such as enclosed telecom power modules or industrial motor drives. This rating is validated per JEDEC test conditions and supports full 4A average current derating only above case temperatures exceeding 75°C. The MUR420SHR7G maintains stable electrical parameters across its full -55°C to +175°C operating range.
Does MUR420SHR7G have a halogen-free construction?
Yes, the MUR420SHR7G is halogen-free in accordance with IEC 61249-2-21, and its molding compound meets UL 94V-0 flammability requirements. The device uses environmentally compliant materials throughout - including matte tin-plated leads and glass-passivated silicon die - and is fully RoHS compliant. These attributes make the MUR420SHR7G suitable for green electronics manufacturing and export to regulated markets.
What is the reverse recovery time (trr) specification for MUR420SHR7G?
The MUR420SHR7G has a reverse recovery time (trr) of 25 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the datasheet test condition. This value is confirmed at both 25°C and 150°C junction temperatures and reflects the device's ultra-fast switching capability. The MUR420SHR7G's 25 ns trr enables high-frequency operation in SMPS designs up to 500 kHz with minimal switching loss and EMI.
Is MUR420SHR7G compatible with lead-free reflow soldering processes?
Yes, the MUR420SHR7G is qualified for lead-free reflow soldering per J-STD-020, with moisture sensitivity level (MSL) 1 - meaning unlimited floor life at ≤30°C/85% RH. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the DO-214AB package withstands peak reflow temperatures up to 260°C. The MUR420SHR7G is designed for compatibility with standard Pb-free assembly lines without special baking or handling.
What does the 'HR7G' suffix indicate in MUR420SHR7G?
The 'HR7G' suffix in MUR420SHR7G denotes Taiwan Semiconductor's tape-and-reel packaging configuration: 'H' = halogen-free, 'R7' = 3,000-piece reel size in 12mm tape width, and 'G' = green compound (RoHS-compliant molding material). This ordering code aligns with TSC's standardized part numbering for DO-214AB devices and confirms full compliance with environmental and packaging specifications defined in the MUR420SHR7G datasheet.
MUR420SHR7G 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
MUR420SHR7G FAQ
1.How can I place an order for MUR420SHR7G through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR420SHR7G 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 MUR420SHR7G reliable?
The price and inventory of MUR420SHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR420SHR7G is usually 5 days.
3.What payment methods are accepted for MUR420SHR7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR420SHR7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR420SHR7G?
MUR420SHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR420SHR7G 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 MUR420SHR7G?
For technical support, including MUR420SHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR420SHR7G requirements.
6.How does Aetrix verify that MUR420SHR7G is sourced from the original manufacturer or authorized distributors?
All MUR420SHR7G 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 MUR420SHR7G meets industry standards.
7.What is the process for return or replacement of MUR420SHR7G?
All MUR420SHR7G units undergo pre-shipment inspection (PSI). If there is an issue with MUR420SHR7G, 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 MUR420SHR7G part is unused and in its original packaging.
Return procedure for MUR420SHR7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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