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Taiwan Semiconductor Corporation MUR315S R7G
- Part No.:
- MUR315S R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR315S R7G.pdf
- Description:
- DIODE GEN PURP 150V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,172
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Product details
Overview
MUR315S R7G from Taiwan Semiconductor is a 3A, 150V ultra-fast recovery surface-mount rectifier in DO-214AB (SMC) package, featuring 25ns reverse recovery time, 0.875V forward voltage at 3A/25°C, and 75A peak surge current - deployed in high-frequency switching mode power supplies for telecom and computing infrastructure.
For engineers reviewing the MUR315S R7G datasheet, MUR315S R7G pinout, MUR315S R7G application, or MUR315S R7G equivalent, key selection criteria include VRRM = 150V, trr = 25ns, IF = 3A, thermal resistance RθJL = 11°C/W, and DO-214AB mechanical compatibility with automated SMT assembly.
Technical Context
This device is a single-die, glass-passivated silicon junction rectifier optimized for high-efficiency DC-DC conversion where fast switching minimizes switching losses. Its 25ns recovery time enables operation up to several hundred kHz in SMPS topologies.
Designed for surface-mount use with matte tin-plated leads compliant to J-STD-002, it supports reflow soldering and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - eliminating bake requirements prior to assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - maximum repetitive reverse blocking voltage; defines safe operating range in flyback/freewheeling paths |
| trr | 25 ns - ultra-fast recovery enables high-frequency switching (>200 kHz) with low switching loss |
| VF @ 3A, 25°C | 0.875 V - low conduction loss improves efficiency in 3A continuous output stages |
| IFSM | 75 A - withstands inrush and transient surges typical in AC-DC front-end and PFC circuits |
| RθJL | 11 °C/W - enables direct thermal path to PCB copper, supporting 3A operation without heatsink at moderate ambient |
| IR @ 150V, 25°C | 5 μA - low leakage preserves efficiency in high-impedance bias networks and standby circuits |
Pinout & Package
Package: DO-214AB (SMC), molded plastic case meeting UL 94V-0; polarity indicated by cathode band; weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., switch node in buck/flyback); requires adequate copper pour for thermal dissipation |
| Cathode | Current exit point during forward conduction; marked by band | Connected to higher-potential rail (e.g., output capacitor positive); serves as reference for snubber and gate drive return paths |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments |
| Ultra-fast 25ns recovery | Reduces reverse recovery charge (Qrr) and associated switching losses in hard-switched converters |
| Moisture Sensitivity Level 1 | Zero floor life limitation - can be mounted directly from dry pack without baking or humidity exposure control |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and global environmental directives for consumer, telecom, and industrial end equipment |
Applications
| Telecom AC-DC Adapters | Server VRM Output Rectification |
|---|---|
Use Scenario: Secondary-side rectification in 50–100W isolated AC-DC adapters for base station radios and optical line terminals. IC Role / Device Role / Timing Role: Ultra-fast freewheeling diode in synchronous or quasi-resonant flyback topology. Use Value: 25ns trr minimizes dead-time losses and EMI generation during MOSFET turn-on transitions. | Use Scenario: Output rectification in multiphase buck converters supplying CPU/GPU core voltage (1.0–1.8V @ 100+ A). IC Role / Device Role / Timing Role: High-current freewheeling path during low-side FET off-time in non-synchronous configurations. Use Value: 0.875V VF at 3A reduces conduction loss contribution in multi-phase current sharing. |
| Industrial PLC Power Supplies | Automotive Infotainment DC-DC Stages |
Use Scenario: Input rectification in wide-input (85–305VAC) DIN-rail power supplies for programmable logic controllers. IC Role / Device Role / Timing Role: Bridge leg diode in full-wave rectifier feeding bulk capacitor in offline SMPS. Use Value: 150V VRRM and 75A IFSM support surge immunity per IEC 61000-4-5 Level 3. | Use Scenario: Isolated auxiliary supply rectification in head unit DC-DC modules (12V → 3.3V/5V). IC Role / Device Role / Timing Role: Secondary-side output rectifier in 10–25W flyback converters operating at 250kHz. Use Value: DO-214AB footprint ensures compatibility with automotive-grade SMT lines and thermal pad layout standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | VRRM = 60V, trr = 35ns, VF = 0.95V @ 3A - lower voltage rating, slower recovery | Not suitable for 150V bus designs; limited to ≤60V secondary-side applications | Select only when system VR < 42V and thermal margin allows higher VF |
| ON Semi MUR315S | Identical VRRM, trr, and package; VF max = 0.92V @ 3A/25°C - 5% higher typical VF | Drop-in compatible in layout and thermal design; minor efficiency penalty in high-duty-cycle operation | Valid alternative if Taiwan Semiconductor supply is constrained; verify VF distribution in production lot |
Compared with STTH3L06S and ON Semi MUR315S, the MUR315S R7G delivers tighter VF specification (0.875V typ), faster recovery (25ns), and guaranteed 150V blocking - making it optimal for 100–150V bus systems requiring minimal conduction and switching loss trade-off.
Availability
MUR315S R7G is available at Aetrix Electronics and suitable for telecom AC-DC adapters, server VRM output stages, and industrial PLC power supplies requiring stable component supply, JEDEC-compliant packaging, and RoHS/halogen-free compliance.
Supply support for MUR315S R7G 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 industrial, computing, and communications markets since 1979.
The MUR3xxS series targets high-efficiency, high-reliability power conversion - specifically engineered for ultra-fast recovery in SMC-packaged rectifiers used in compact, thermally constrained switch-mode power supplies.
FAQ
What is the maximum junction temperature rating for MUR315S R7G?
The MUR315S R7G has a maximum junction temperature (TJ) of +175°C, enabling reliable operation in high-ambient environments such as enclosed telecom power modules or industrial control cabinets. This rating is supported by its 11°C/W junction-to-lead thermal resistance and glass-passivated die construction. Derating curves confirm 3A average current capability up to 125°C ambient with appropriate PCB copper area.
Is MUR315S R7G suitable for synchronous rectification designs?
No - the MUR315S R7G is a unidirectional, ultra-fast recovery PN junction rectifier, not a MOSFET-based synchronous rectifier. It lacks gate control and cannot be actively switched. It functions exclusively as a passive freewheeling or output rectifier in non-synchronous topologies like standard flyback or forward converters. For synchronous designs, discrete N-channel MOSFETs or dedicated SR controllers must be used instead of MUR315S R7G.
Does MUR315S R7G meet lead-free soldering requirements?
Yes - the MUR315S R7G features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for lead-free reflow profiles (peak temperature up to 260°C). Its DO-214AB package is compatible with standard Pb-free SAC305 processes, and the device carries no moisture sensitivity restrictions (MSL Level 1), eliminating pre-bake steps before assembly.
What is the reverse leakage current of MUR315S R7G at 150V and 150°C?
At rated reverse voltage (150V) and junction temperature of 150°C, the MUR315S R7G exhibits a maximum reverse leakage current (IR) of 150 μA. This value is confirmed in the Electrical Specifications table and reflects stable performance under elevated thermal stress - critical for maintaining efficiency in high-temperature power supply enclosures where ambient exceeds 85°C.
Can MUR315S R7G replace MUR320S in a 200V design?
No - the MUR315S R7G has a VRRM rating of 150V and is not rated for continuous operation at 200V reverse bias. Substituting it for MUR320S (200V) risks premature breakdown and catastrophic failure under normal operating conditions or transients. Always match VRRM to the peak circuit voltage plus safety margin; MUR315S R7G must only be used in ≤150V applications.
MUR315S R7G 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):
- 150 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 875 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 150 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 175°C
MUR315S R7G FAQ
1.How can I place an order for MUR315S R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR315S R7G 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 MUR315S R7G reliable?
The price and inventory of MUR315S R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR315S R7G is usually 5 days.
3.What payment methods are accepted for MUR315S R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR315S R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR315S R7G?
MUR315S R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR315S R7G 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 MUR315S R7G?
For technical support, including MUR315S R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR315S R7G requirements.
6.How does Aetrix verify that MUR315S R7G is sourced from the original manufacturer or authorized distributors?
All MUR315S R7G 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 MUR315S R7G meets industry standards.
7.What is the process for return or replacement of MUR315S R7G?
All MUR315S R7G units undergo pre-shipment inspection (PSI). If there is an issue with MUR315S R7G, 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 MUR315S R7G part is unused and in its original packaging.
Return procedure for MUR315S R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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