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Taiwan Semiconductor Corporation MUR440S M6G
- Part No.:
- MUR440S M6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR440S M6G.pdf
- Description:
- DIODE GEN PURP 400V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,382
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Product details
Overview
MUR440S M6G from Taiwan Semiconductor is an ultra-fast recovery surface-mount rectifier diode with 4 A average forward current, 400 V repetitive peak reverse voltage, and 50 ns reverse recovery time, designed for high-frequency switching mode power supplies in telecom and computing infrastructure.
For engineers reviewing the MUR440S M6G datasheet, MUR440S M6G pinout, MUR440S M6G application, or MUR440S M6G equivalent, key selection criteria include its DO-214AB (SMC) package, 1.25 V max forward voltage at 4 A/25°C, 10 μA max reverse leakage at 400 V/25°C, and suitability for freewheeling and snubber circuits requiring fast recovery and low switching loss.
Technical Context
This single-die, unidirectional silicon rectifier uses a glass-passivated junction to ensure stable operation up to 175°C junction temperature and supports automated SMT placement per J-STD-020 Level 1 moisture sensitivity. Its ultra-fast trr of 50 ns enables efficient operation in DC-DC converters operating above 100 kHz.
The device exhibits a typical junction capacitance of 65 pF at 4 V reverse bias and 1 MHz, with thermal resistance RθJA = 45°C/W and RθJC = 8.5°C/W - enabling reliable thermal management in compact, high-power-density designs without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum non-repetitive reverse voltage the diode blocks without breakdown; defines usable input voltage range in PFC and secondary-side rectification |
| IF | 4 A - continuous average forward current at TC = 75°C; sets minimum heatsinking requirement for sustained conduction |
| trr | 50 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; determines switching loss and EMI profile in hard-switched topologies |
| VF (max) | 1.25 V @ 4 A, 25°C - forward voltage drop defining conduction loss at rated current and room temperature |
| IR (max) | 10 μA @ 400 V, 25°C - reverse leakage current affecting standby power and high-impedance bias networks |
| RθJC | 8.5°C/W - thermal resistance from junction to case; enables direct thermal interface design to heatsink or PCB copper pour |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead 1) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter, transformer center-tap in full-wave) |
| Cathode (lead 2) | Forward current exit / reverse blocking terminal | Connected to output rail or positive bus; polarity band must align with PCB silkscreen cathode marking |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments |
| Ultra-fast 50 ns recovery | Reduces reverse recovery charge (Qrr) and associated switching losses in 100–500 kHz SMPS designs |
| J-STD-020 Level 1 moisture sensitivity | Allows unlimited floor life before reflow; no baking required prior to assembly |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU; supports green manufacturing and export compliance |
Applications
| Server Power Supply Rectification | Telecom DC-DC Converter Output Stage |
|---|---|
Use Scenario: Secondary-side rectification in 48 V input, 12 V/20 A isolated DC-DC modules for data center servers. IC Role / Device Role / Timing Role: Unidirectional power conversion element conducting during positive half-cycle of transformer secondary voltage. Use Value: 50 ns trr minimizes cross-conduction loss with synchronous MOSFETs; 1.25 V VF limits conduction loss to <1.0 W at full load. | Use Scenario: Output rectification in 36–72 V telecom power systems delivering 3.3 V/30 A to baseband processing boards. IC Role / Device Role / Timing Role: Freewheeling diode clamping inductor current during high-side switch off-time in forward or active clamp topologies. Use Value: Low Qrr and 10 μA IR reduce idle power and improve light-load efficiency over legacy fast rectifiers. |
| Industrial Motor Drive Snubber | LED Driver Flyback Secondary |
Use Scenario: RC snubber network across IGBT collector-emitter in 3-phase inverter stages for HVAC compressors. IC Role / Device Role / Timing Role: Fast recovery path for transient energy dissipation during IGBT turn-off. Use Value: 75 A IFSM withstands surge currents from inductive kickback; 400 V VRRM provides margin above 320 V DC bus. | Use Scenario: Output rectification in isolated flyback LED drivers for street lighting (input 90–305 V AC, output 48 V/1.5 A). IC Role / Device Role / Timing Role: High-voltage, low-leakage rectifier converting transformer secondary AC to regulated DC output. Use Value: 250 μA IR at 150°C ensures stable output regulation under high ambient; DO-214AB footprint fits tight board space constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4L04TV | 400 V VRRM, 4 A IF, 35 ns trr, TO-220AC package | Through-hole mounting; higher thermal mass but requires hole drilling and wave soldering | Preferred where board-level thermal management favors through-hole heatsinking and layout allows larger footprint |
| ON Semi MUR440E | Same VRRM/IF/trr; DO-214AB package; slightly higher VF (1.3 V max) | Identical SMT fit; minor conduction loss increase affects efficiency-critical 24/7 operation | Drop-in replacement if existing design uses MUR440E footprint and tolerates +0.05 V VF penalty |
Compared with STTH4L04TV and MUR440E, the MUR440S M6G offers optimal balance of ultra-fast recovery, SMT scalability, and low-profile DO-214AB packaging - making it preferred for high-volume, space-constrained telecom and server power modules where automated assembly and thermal density matter most.
Availability
MUR440S M6G is available at Aetrix Electronics and suitable for telecom power supplies, server DC-DC converters, and industrial motor drive snubbers requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for MUR440S M6G 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and computing markets.
The MUR440S M6G belongs to TSC's MUR4xS ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency switching power conversion in infrastructure-grade power supplies where reliability, thermal robustness, and SMT manufacturability are critical.
FAQ
What is the maximum junction temperature rating for MUR440S M6G?
The MUR440S M6G has a maximum junction temperature (TJ) of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet F2102. This rating allows operation in high-ambient environments such as enclosed server chassis or industrial enclosures without derating below 4 A until case temperature exceeds 75°C. Thermal design must respect RθJC = 8.5°C/W to maintain safe junction temperatures under full load.
Is MUR440S M6G RoHS and halogen-free compliant?
Yes, the MUR440S M6G is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21, as confirmed in the "Features" section of the Taiwan Semiconductor datasheet F2102. The molding compound and matte tin-plated leads meet these environmental standards, supporting green manufacturing and global export requirements without material declaration exceptions.
What does the 'M6G' suffix indicate in MUR440S M6G?
The 'M6G' suffix in MUR440S M6G denotes Taiwan Semiconductor's internal packaging and environmental code: 'M6' specifies tape-and-reel packaging (3,000 units per reel), and 'G' indicates green (halogen-free) compound per IEC 61249-2-21. This matches the ordering information table in datasheet F2102 and distinguishes it from non-halogen-free variants like MUR440S M6.
Can MUR440S M6G replace MUR420S in a 400 V design?
No - MUR420S is rated for only 200 V VRRM, while MUR440S M6G is rated for 400 V. Substituting MUR440S M6G into a circuit originally designed for MUR420S is electrically safe (higher voltage rating), but not functionally equivalent due to higher forward voltage (1.25 V vs. 0.875 V max) and longer reverse recovery (50 ns vs. 25 ns). System-level validation is required before substitution.
What is the reverse recovery time test condition for MUR440S M6G?
The reverse recovery time (trr) of 50 ns for MUR440S M6G is measured under the standardized condition: IF = 0.5 A, IR = 1.0 A, reverse recovery current Irr = 0.25 A, per the Electrical Specifications table in Taiwan Semiconductor datasheet F2102. This test setup reflects real-world switching behavior in hard-commutated converters and is used to calculate reverse recovery charge (Qrr) for loss modeling.
MUR440S 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):
- 400 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):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 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
MUR440S M6G FAQ
1.How can I place an order for MUR440S M6G through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR440S 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 MUR440S M6G reliable?
The price and inventory of MUR440S M6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR440S M6G is usually 5 days.
3.What payment methods are accepted for MUR440S M6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR440S M6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR440S M6G?
MUR440S M6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR440S 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 MUR440S M6G?
For technical support, including MUR440S M6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR440S M6G requirements.
6.How does Aetrix verify that MUR440S M6G is sourced from the original manufacturer or authorized distributors?
All MUR440S 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 MUR440S M6G meets industry standards.
7.What is the process for return or replacement of MUR440S M6G?
All MUR440S M6G units undergo pre-shipment inspection (PSI). If there is an issue with MUR440S 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 MUR440S M6G part is unused and in its original packaging.
Return procedure for MUR440S M6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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