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Taiwan Semiconductor Corporation MUR440SHM6G
- Part No.:
- MUR440SHM6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR440SHM6G.pdf
- Description:
- DIODE GEN PURP 400V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,579
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Product details
Overview
MUR440SHM6G from Taiwan Semiconductor is a 4A, 400V ultra-fast recovery surface-mount rectifier in DO-214AB (SMC) package, featuring 50 ns reverse recovery time, 1.25 V max forward voltage at 4A/25°C, and 10 μA max reverse leakage at rated VR and 25°C. It serves as a freewheeling diode in high-frequency switching-mode power supplies for telecom infrastructure.
For engineers reviewing the MUR440SHM6G datasheet, MUR440SHM6G pinout, MUR440SHM6G application, or MUR440SHM6G equivalent, key selection criteria include its 400V VRRM rating, 75A IFSM surge capability, 8.5°C/W RθJC thermal resistance, and DO-214AB mechanical compatibility with automated SMT assembly lines.
Technical Context
This device implements a single-die silicon PN junction with glass passivated chip construction, enabling stable operation up to 175°C junction temperature. Its ultra-fast trr of 50 ns minimizes switching losses in DC-DC converters operating above 100 kHz.
The MUR440SHM6G is rated for repetitive peak reverse voltage of 400 V and RMS reverse voltage of 280 V, with forward voltage tightly specified at ≤1.25 V under 4 A DC load at 25°C - critical for efficiency-critical secondary-side rectification in isolated flyback and forward topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - supports input rectification in 280 VAC mains-derived SMPS designs without derating |
| IF | 4 A continuous - sustains full-load current in compact 30–60 W adapter outputs |
| trr | 50 ns - enables efficient operation in >100 kHz switching converters with low recovery loss |
| RθJC | 8.5 °C/W - allows direct heatsinking via PCB copper pour for thermal management |
| IR @ 25°C | ≤10 μA - ensures minimal standby power loss in always-on telecom power stages |
| Junction Temp | −55°C to +175°C - qualified for industrial ambient environments including base station enclosures |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band, UL 94V-0 molding compound, weight ≈0.250 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to switch node or transformer secondary winding in flyback/freewheeling paths |
| Cathode | Current exit point during forward conduction; marked with band | Connected to output capacitor or common return rail - defines output polarity and grounding reference |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term reliability under humidity and thermal cycling in unsealed telecom modules |
| Moisture sensitivity level 1 | Eliminates bake requirement before reflow - compatible with standard J-STD-020 assembly flow |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS directives for green electronics manufacturing |
| Ultra-fast 50 ns recovery | Reduces reverse recovery charge (Qrr) to <15 nC - lowers EMI and improves light-load efficiency |
Applications
| Telecom AC-DC Adapters | Industrial DC-DC Converters |
|---|---|
Use Scenario: Secondary-side rectification in 48 V output, 50–100 W telecom offline adapters. IC Role / Device Role / Timing Role: Ultra-fast freewheeling diode synchronizing with primary-side MOSFET switching at 132 kHz. Use Value: 50 ns trr reduces switching loss by ≥18% vs. standard fast recovery diodes, improving full-load efficiency to >89%. | Use Scenario: Output rectification in isolated 24 V/5 A industrial DC-DC modules for PLC I/O power rails. IC Role / Device Role / Timing Role: High-reliability output diode handling repetitive 75 A surge events during motor drive startup transients. Use Value: 75 A IFSM and 175°C TJ rating enable robust operation without derating in 70°C ambient control cabinets. |
| Server PSU Hold-up Circuits | LED Driver Secondary Rectification |
Use Scenario: Freewheeling path in active clamp forward converters delivering 12 V/20 A for server motherboard VRMs. IC Role / Device Role / Timing Role: Fast-recovery diode conducting during dead-time intervals to maintain continuous inductor current. Use Value: Low 1.25 V VF at 4 A minimizes conduction loss in high-current hold-up stage, reducing thermal stress on PCB copper. | Use Scenario: Output rectification in constant-current LED drivers powering outdoor streetlights (100–200 W). IC Role / Device Role / Timing Role: Primary rectifier converting high-frequency transformer output to regulated DC bus for LED string drivers. Use Value: 10 μA IR at 25°C and 250 μA at 150°C ensures negligible standby leakage - critical for energy-rated outdoor lighting compliance. |
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 | Same DO-214AB package; 4 A/600 V; trr = 45 ns; VF = 1.25 V @ 4 A | Higher VRRM margin for 380 VAC systems; slightly faster recovery | Preferred where 600 V rating is required for universal input or surge tolerance |
| ES4D | DO-214AB; 4 A/200 V; trr = 35 ns; VF = 0.92 V @ 4 A | Lower VRRM and VF - optimized for low-voltage, high-efficiency DC-DC secondaries | Select when operating below 150 V reverse bias and prioritizing conduction loss over voltage headroom |
Compared with STTH4L06S and ES4D, the MUR440SHM6G provides optimal balance of 400 V rating, 50 ns trr, and thermal robustness for mid-range telecom and industrial SMPS - avoiding overdesign while ensuring margin against line surges and thermal drift.
Availability
MUR440SHM6G is available at Aetrix Electronics and suitable for telecom power adapters, industrial DC-DC converters, and LED driver secondary rectification requiring stable component supply across multi-year production cycles.
Supply support for MUR440SHM6G 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 MUR4xxS family targets high-frequency power conversion applications, with design focus on ultra-fast recovery, thermal resilience, and SMT manufacturability for next-generation compact power supplies.
FAQ
What is the maximum junction temperature rating for MUR440SHM6G?
The MUR440SHM6G has a maximum junction temperature (TJ MAX) of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet F2102. This rating enables reliable operation in enclosed industrial enclosures and telecom base stations where ambient temperatures exceed 70°C. The device's RθJC of 8.5°C/W supports effective heat transfer to the PCB, making MUR440SHM6G suitable for thermally constrained layouts without external heatsinks.
Does MUR440SHM6G have a halogen-free construction?
Yes, MUR440SHM6G is halogen-free in accordance with IEC 61249-2-21, as confirmed in the "Features" section of the Taiwan Semiconductor datasheet F2102. The molding compound contains no bromine or chlorine-based flame retardants, and the device is also RoHS compliant. This makes MUR440SHM6G acceptable for green electronics manufacturing programs requiring strict material declarations and environmental compliance documentation.
What is the reverse recovery time (trr) specification for MUR440SHM6G?
The reverse recovery time (trr) for MUR440SHM6G is 50 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions per the Electrical Specifications table in the F2102 datasheet. This value applies across the MUR440S variant and is distinct from the 25 ns trr of the MUR420S. The 50 ns trr directly contributes to reduced switching loss in high-frequency converters, confirming MUR440SHM6G's suitability for 100–500 kHz SMPS designs.
Is MUR440SHM6G compatible with lead-free reflow soldering processes?
Yes, MUR440SHM6G features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for moisture sensitivity level 1 per J-STD-020 - meaning it can be placed directly into lead-free reflow ovens (peak temperature up to 260°C) without pre-baking. The DO-214AB package and terminal finish ensure consistent wetting and joint integrity in automated SMT lines, supporting high-yield manufacturing of MUR440SHM6G-equipped power boards.
What does the 'HM6G' suffix indicate in MUR440SHM6G?
The 'HM6G' suffix in MUR440SHM6G denotes Taiwan Semiconductor's internal packaging and environmental coding: 'H' indicates halogen-free compound, 'M6' specifies tape-and-reel packaging with 3,000 units per reel, and 'G' signifies green (lead-free/RoHS-compliant) finish. This full part number matches the ordering code defined in the "Ordering Information" section of the F2102 datasheet and confirms the device's compliance status and packaging format for procurement and logistics planning.
MUR440SHM6G 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 175°C
MUR440SHM6G FAQ
1.How can I place an order for MUR440SHM6G through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR440SHM6G 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 MUR440SHM6G reliable?
The price and inventory of MUR440SHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR440SHM6G is usually 5 days.
3.What payment methods are accepted for MUR440SHM6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR440SHM6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR440SHM6G?
MUR440SHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR440SHM6G 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 MUR440SHM6G?
For technical support, including MUR440SHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR440SHM6G requirements.
6.How does Aetrix verify that MUR440SHM6G is sourced from the original manufacturer or authorized distributors?
All MUR440SHM6G 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 MUR440SHM6G meets industry standards.
7.What is the process for return or replacement of MUR440SHM6G?
All MUR440SHM6G units undergo pre-shipment inspection (PSI). If there is an issue with MUR440SHM6G, 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 MUR440SHM6G part is unused and in its original packaging.
Return procedure for MUR440SHM6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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