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Taiwan Semiconductor Corporation MUR420S M6G
- Part No.:
- MUR420S M6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR420S M6G.pdf
- Description:
- DIODE GEN PURP 200V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,501
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Product details
Overview
MUR420S from Taiwan Semiconductor is a 4A, 200V ultra-fast recovery surface-mount rectifier diode in DO-214AB (SMC) package, featuring 25ns reverse recovery time, 0.875V max forward voltage at 4A/25°C, and 75A peak surge current-designed for high-frequency switching mode power supplies in telecom infrastructure.
For engineers reviewing the MUR420S datasheet, MUR420S pinout, MUR420S application, or MUR420S equivalent, key selection criteria include ultra-fast trr performance, thermal resistance (RθJA = 45°C/W), junction temperature range (–55°C to +175°C), and RoHS/halogen-free compliance for industrial-grade power conversion designs.
Technical Context
The MUR420S employs a glass-passivated silicon junction optimized for high-efficiency rectification in DC-DC converters and freewheeling paths. Its 25ns reverse recovery time enables operation at frequencies up to several hundred kHz without excessive switching loss.
Thermal design is supported by RθJC = 8.5°C/W and RθJA = 45°C/W, with a maximum junction temperature of +175°C and moisture sensitivity level 1 per J-STD-020-ensuring robust reflow compatibility and long-term reliability under continuous 4A conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage; defines safe blocking capability in 200V-rated circuits |
| IF | 4 A - Continuous average forward current; supports sustained 4A output in SMPS secondary-side rectification |
| trr | 25 ns - Ultra-fast reverse recovery; minimizes switching loss and EMI in >100 kHz converters |
| VF (max) | 0.875 V @ 4A, 25°C - Low forward drop improves system efficiency and reduces thermal load on heatsinking |
| RθJA | 45 °C/W - Junction-to-ambient thermal resistance; determines required PCB copper area for natural convection cooling |
| IFSM | 75 A - Non-repetitive surge rating; withstands inrush and transient overloads in power supply startup |
| Junction temp | –55°C to +175°C - Wide operating range enables use in automotive under-hood and industrial ambient environments |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads, UL 94V-0 molding compound, 0.250g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or filter capacitor positive; blocks 200V reverse voltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance without requiring conformal coating |
| Ultra-fast 25ns trr | Reduces switching losses and allows higher-frequency operation than standard fast recovery diodes |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to SMT reflow, streamlining automated assembly |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental compliance mandates for end-product certification |
| DO-214AB mechanical robustness | Supports high-volume pick-and-place with verified lead coplanarity and solderability per J-STD-002 |
Applications
| Telecom AC-DC Adapters | Server PSU Secondary Rectification |
|---|---|
Use Scenario: High-density 48V input AC-DC adapters for 5G baseband units requiring compact, efficient 12V/5V outputs. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 25ns trr and 0.875V VF reduce conduction and switching losses, enabling >92% efficiency at full load. | Use Scenario: Secondary-side rectification in 1U server power supplies operating at 200–300 kHz switching frequency. IC Role / Device Role / Timing Role: Freewheeling diode in LLC resonant converter output stage. Use Value: Low RθJA (45°C/W) and +175°C TJMAX allow reliable operation under high ambient temperatures in constrained airflow chassis. |
| Industrial Motor Drive Snubbers | Automotive On-Board Charger (OBC) Auxiliary Supplies |
Use Scenario: Clamp/snubber diode in IGBT gate drive or DC-link protection circuits for HVAC inverters. IC Role / Device Role / Timing Role: Fast-recovery clamp element absorbing inductive kickback energy. Use Value: 75A IFSM withstands repetitive surge events; 25ns trr prevents voltage overshoot during rapid turn-off. | Use Scenario: Auxiliary 12V supply rectification in bidirectional OBCs where space and thermal margin are critical. IC Role / Device Role / Timing Role: Input rectifier for isolated auxiliary flyback supplying MCU, gate drivers, and sensors. Use Value: –55°C to +175°C operating range ensures functionality across cold-start and under-hood thermal extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L06D | 600V VRRM, 20ns trr, 1.15V VF @ 4A - higher voltage rating, faster recovery, but higher forward drop | Suitable for 400–600V systems; less optimal for 200V designs due to over-spec'd blocking voltage and increased conduction loss | Select when designing for universal input or higher bus voltages; verify thermal impact of higher VF |
| ES4D-E3/57T | 200V VRRM, 35ns trr, 0.92V VF @ 4A - same voltage rating but slower recovery and slightly higher VF | Better cost/performance fit for <100 kHz applications; not recommended for >200 kHz switching where MUR420S's 25ns advantage matters | Choose for cost-sensitive, lower-frequency industrial PSUs where ultra-fast recovery is non-critical |
Compared with STTH4L06D and ES4D-E3/57T, the MUR420S delivers the optimal balance of 200V rating, 25ns speed, and 0.875V forward drop-making it the preferred choice for thermally constrained, high-frequency 200V rectification where efficiency and layout density are prioritized.
Availability
MUR420S is available at Aetrix Electronics and suitable for telecom power adapters, server PSUs, industrial motor drives, and automotive OBC auxiliary supplies requiring stable component supply and full traceability.
Supply support for MUR420S 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 communications markets since 1979.
The MUR420S belongs to TSC's ultra-fast recovery rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in space-constrained and thermally demanding applications.
FAQ
What is the maximum junction temperature rating for the MUR420S?
The MUR420S has a maximum junction temperature (TJMAX) of +175°C, enabling reliable operation in high-ambient environments such as enclosed server PSUs or under-hood automotive electronics. This rating is validated per the absolute maximum ratings table in the official TSC datasheet F2102 and supports extended lifetime under continuous 4A conduction when thermal design adheres to RθJA = 45°C/W limits. The MUR420S must not exceed this temperature during normal or transient operation.
Does the MUR420S have a halogen-free construction?
Yes, the MUR420S is halogen-free in accordance with IEC 61249-2-21 and RoHS compliant, as confirmed in the "Features" section of the TSC datasheet F2102. The molding compound and internal materials contain no brominated flame retardants or chlorine-based additives. This specification applies directly to the MUR420S device and supports compliance requirements for consumer, industrial, and telecom end equipment certifications. The MUR420S meets both environmental standards without derating or special handling.
What is the reverse recovery time (trr) of the MUR420S and under what test conditions?
The MUR420S has a reverse recovery time (trr) of 25 ns, measured under the conditions: IF = 0.5 A, IR = 1.0 A, IRR = 0.25 A, and TJ = 25°C, as specified in the Electrical Specifications table of the TSC datasheet F2102. This value is exclusive to the MUR420S variant; higher-voltage variants (MUR440S/MUR460S) specify 50 ns. The MUR420S's 25 ns trr is critical for minimizing switching loss in >100 kHz power topologies.
Is the MUR420S suitable for lead-free reflow soldering processes?
Yes, the MUR420S is qualified for lead-free reflow soldering per J-STD-020, with Moisture Sensitivity Level (MSL) 1-meaning it can be stored indefinitely at ≤30°C/60% RH and requires no pre-bake before assembly. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the DO-214AB package withstands peak reflow temperatures up to 260°C. This makes the MUR420S fully compatible with standard Pb-free manufacturing lines without process modification.
How does the forward voltage (VF) of the MUR420S vary with temperature?
The MUR420S exhibits a negative temperature coefficient for forward voltage: VF decreases from 0.875 V (max) at 4A/25°C to 0.710 V (max) at 4A/150°C, as documented in the Electrical Specifications table of the TSC datasheet F2102. This reduction lowers conduction loss at elevated temperatures, improving thermal stability in high-power-density designs. The MUR420S maintains this behavior across its full operating junction temperature range, supporting predictable thermal modeling in real-world applications.
MUR420S M6G 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 175°C
MUR420S M6G FAQ
1.How can I place an order for MUR420S M6G through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR420S M6G 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 MUR420S M6G reliable?
The price and inventory of MUR420S M6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR420S M6G is usually 5 days.
3.What payment methods are accepted for MUR420S M6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR420S M6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR420S M6G?
MUR420S M6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR420S M6G 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 MUR420S M6G?
For technical support, including MUR420S M6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR420S M6G requirements.
6.How does Aetrix verify that MUR420S M6G is sourced from the original manufacturer or authorized distributors?
All MUR420S M6G 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 MUR420S M6G meets industry standards.
7.What is the process for return or replacement of MUR420S M6G?
All MUR420S M6G units undergo pre-shipment inspection (PSI). If there is an issue with MUR420S M6G, 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 MUR420S M6G part is unused and in its original packaging.
Return procedure for MUR420S M6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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