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Taiwan Semiconductor Corporation MUR315SH
- Part No.:
- MUR315SH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR315SH.pdf
- Description:
- DIODE GEN PURP 150V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,974
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Product details
Overview
MUR315SH from Taiwan Semiconductor is an ultra-fast recovery surface-mount rectifier diode rated for 3 A average forward current and 150 V repetitive peak reverse voltage, with 25 ns reverse recovery time and 0.875 V forward voltage at 3 A and 25°C, widely used in automotive DC-DC converters and freewheeling circuits.
For engineers reviewing the MUR315SH datasheet, MUR315SH pinout, MUR315SH application, or MUR315SH equivalent, key selection criteria include its DO-214AB (SMC) package, AEC-Q101 qualification, glass-passivated junction, moisture sensitivity level 1 rating, and suitability for high-frequency switching in constrained automotive and industrial power stages.
Technical Context
The MUR315SH is a single-die, unidirectional silicon rectifier optimized for high-efficiency switching power supplies. Its ultra-fast recovery (trr = 25 ns) minimizes switching losses during turn-off, while its low forward voltage (VF = 0.875 V @ 3 A, 25°C) reduces conduction loss in continuous-current paths.
Designed for automotive-grade reliability, it features AEC-Q101 qualification, glass passivation for junction protection, and operates across –55°C to +175°C junction temperature range. Its DO-214AB (SMC) package supports automated placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum non-repetitive reverse voltage the device blocks without breakdown; defines usable input voltage headroom in flyback or snubber circuits. |
| IF(AV) | 3 A - Continuous average forward current capability at TC = 75°C; sets thermal design baseline for heatsinking in 12–48 V automotive systems. |
| trr | 25 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables operation up to ~10 MHz switching frequencies with minimal reverse recovery loss. |
| VF | 0.875 V @ 3 A, 25°C - Forward voltage drop under nominal load; directly determines conduction loss (P = IF × VF) in high-duty-cycle applications. |
| IR | 5 μA @ 150 V, 25°C - Reverse leakage current; low value ensures minimal standby power loss in battery-sensitive automotive modules. |
| RθJL | 11 °C/W - Junction-to-lead thermal resistance; enables direct PCB copper pour thermal management without discrete heatsink in space-constrained SMC layouts. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount plastic case with cathode band marking; dimensions per JEDEC DO-214AB Issue D; matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit (e.g., switch node in buck converter); polarity must align with cathode band orientation on PCB silkscreen. |
| Cathode | Forward current exit / reverse voltage blocking terminal | Marked by visible band; ties to higher-potential rail (e.g., output capacitor positive); reverse voltage applied between cathode and anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, ESD, and mechanical shock-enables use in engine control, lighting, and ADAS subsystems. |
| Glass passivated junction | Hermetically seals silicon die against humidity and ionic contamination, improving long-term reliability in high-humidity under-hood environments. |
| Moisture sensitivity level 1 | No bake preconditioning required before reflow; compatible with standard SMT assembly lines without floor-life constraints or dry-pack handling. |
| Ultra-fast 25 ns trr | Reduces reverse recovery charge (Qrr) and associated switching loss, enabling higher efficiency in 200–500 kHz DC-DC topologies common in LED drivers and EPS modules. |
Applications
| Automotive DC-DC Converters | Car Lighting Systems |
|---|---|
Use Scenario: Step-down conversion from 12 V or 48 V battery to regulated 5 V/3.3 V for infotainment and sensor modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant buck topology, conducting during low-side switch off-time. Use Value: 25 ns trr and 0.875 V VF minimize power loss and thermal rise, supporting compact layout and extended lifetime under cyclic thermal stress. | Use Scenario: Constant-current LED driver for headlights, DRLs, and interior lighting with PWM dimming. IC Role / Device Role / Timing Role: Freewheeling path for inductive current during MOSFET turn-off in boost or buck-boost LED controllers. Use Value: Low Qrr and fast recovery prevent voltage overshoot and EMI spikes, ensuring clean dimming response and EMC compliance. |
| Snubber Circuits | Freewheeling Diodes |
Use Scenario: RCD clamp network across primary-side MOSFET in flyback or forward converters to suppress voltage spikes. IC Role / Device Role / Timing Role: Fast-turn-on diode that conducts transient energy into RC network during MOSFET turn-off edge. Use Value: 25 ns trr ensures rapid conduction onset before spike peaks, limiting peak clamping voltage and reducing snubber resistor dissipation. | Use Scenario: Inductive load protection in solenoid drivers, fuel pump controllers, and HVAC actuators. IC Role / Device Role / Timing Role: Provides low-impedance path for stored inductor current when driving transistor switches off. Use Value: 75 A IFSM withstands high-energy transients; 175°C TJ max allows operation near hot engine components without derating. |
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 | Same DO-214AB package, 3 A / 600 V, trr = 35 ns, VF = 0.95 V @ 3 A | Higher VRRM supports wider input ranges but slower recovery increases switching loss above 300 kHz | Prefer for 48 V+ systems where voltage margin outweighs efficiency trade-off |
| ON Semi MUR315S | Identical electrical specs and DO-214AB footprint; differs only in manufacturer branding and traceability | No functional difference; fully interchangeable in AEC-Q101-compliant designs | Direct second-source option with identical thermal and dynamic behavior |
Compared with STTH3L06S and ON Semi MUR315S, the MUR315SH delivers optimal balance of speed (25 ns trr), low VF (0.875 V), and automotive qualification-making it preferred for thermally dense, high-frequency 12–24 V automotive power stages where efficiency and reliability are co-prioritized.
Availability
MUR315SH is available at Aetrix Electronics and suitable for automotive DC-DC converters, car lighting systems, and freewheeling applications requiring stable component supply, AEC-Q101 compliance, and consistent DO-214AB packaging.
Supply support for MUR315SH 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 automotive-qualified devices.
The MUR315SH belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial environments where thermal robustness and switching speed are critical.
FAQ
What is the maximum junction temperature rating for the MUR315SH?
The MUR315SH has a maximum junction temperature (TJ MAX) of +175°C, verified per absolute maximum ratings table. This allows operation in under-hood automotive environments and high-power-density industrial converters. Derating curves in the datasheet define safe operating current versus lead temperature, and thermal design must ensure RθJL = 11°C/W path to maintain TJ ≤ 175°C under full load. The MUR315SH maintains specified VF and trr performance across its full –55°C to +175°C junction range.
Is the MUR315SH AEC-Q101 qualified?
Yes, the MUR315SH is explicitly AEC-Q101 qualified, as confirmed in the FEATURES section of the official Taiwan Semiconductor datasheet (Version B2212). This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), electrostatic discharge (HBM/MM), and mechanical shock-validating its suitability for automotive power electronics such as engine control units and lighting modules. The MUR315SH carries this qualification as a standard feature, not an optional variant.
What is the reverse recovery time (trr) of the MUR315SH and under what conditions is it measured?
The MUR315SH 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, per the ELECTRICAL SPECIFICATIONS table. This value applies to all MUR305SH–MUR320SH variants and is validated at TA = 25°C. The MUR315SH's 25 ns trr enables efficient operation in high-frequency switching applications such as 300–500 kHz DC-DC converters, where minimizing reverse recovery loss is essential for thermal and efficiency targets.
Does the MUR315SH have a halogen-free construction?
Yes, the MUR315SH is halogen-free in accordance with IEC 61249-2-21, as stated in the FEATURES section of the Taiwan Semiconductor datasheet. Its molding compound contains no bromine, chlorine, or other regulated halogens, supporting environmental compliance for automotive and industrial end equipment. This specification applies to the entire MUR305SH–MUR360SH family, and the MUR315SH's green compound marking (G in marking diagram) confirms halogen-free status per TSC manufacturing documentation.
What is the moisture sensitivity level (MSL) of the MUR315SH and how does it affect PCB assembly?
The MUR315SH has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH without baking prior to reflow soldering. This eliminates floor-life tracking, dry-pack requirements, and pre-reflow bake cycles in standard SMT lines-reducing process complexity and cost. The MUR315SH's Level 1 rating is enabled by its hermetic glass passivation and robust DO-214AB encapsulation, and is confirmed in the MECHANICAL DATA section of the datasheet.
MUR315SH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 175°C
MUR315SH FAQ
1.How can I place an order for MUR315SH through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR315SH 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 MUR315SH reliable?
The price and inventory of MUR315SH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR315SH is usually 5 days.
3.What payment methods are accepted for MUR315SH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR315SH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR315SH?
MUR315SH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR315SH 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 MUR315SH?
For technical support, including MUR315SH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR315SH requirements.
6.How does Aetrix verify that MUR315SH is sourced from the original manufacturer or authorized distributors?
All MUR315SH 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 MUR315SH meets industry standards.
7.What is the process for return or replacement of MUR315SH?
All MUR315SH units undergo pre-shipment inspection (PSI). If there is an issue with MUR315SH, 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 MUR315SH part is unused and in its original packaging.
Return procedure for MUR315SH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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