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Taiwan Semiconductor Corporation MUR305SH
- Part No.:
- MUR305SH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR305SH.pdf
- Description:
- DIODE GEN PURP 50V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
MUR305SH from Taiwan Semiconductor is an ultra-fast recovery surface-mount rectifier diode rated for 3 A average forward current and 50 V repetitive peak reverse voltage, with 75 A non-repetitive surge capability and 25 ns reverse recovery time at 25°C; it is AEC-Q101 qualified and used in automotive DC-DC converters and freewheeling circuits.
For engineers reviewing the MUR305SH datasheet, MUR305SH pinout, MUR305SH application, or MUR305SH equivalent, key selection criteria include its DO-214AB (SMC) package, glass-passivated junction, 0.875 V forward voltage at 3 A/25°C, 175°C maximum junction temperature, and suitability for high-efficiency snubber and car lighting systems.
Technical Context
The MUR305SH is a single-die, unidirectional silicon rectifier optimized for high-frequency switching applications requiring fast turn-off to minimize switching losses. Its ultra-fast recovery (trr = 25 ns) and low forward voltage (VF = 0.875 V @ 3 A, 25°C) support efficient operation in DC-DC converters and freewheeling paths.
Designed with a glass-passivated junction and matte tin-plated leads compliant with J-STD-002, the MUR305SH meets AEC-Q101 stress testing requirements and JESD201 Class 2 whisker resistance, enabling reliable use in automotive under-hood environments up to 175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 3 A - Sustained forward conduction capability without derating at 25°C ambient |
| VRRM | 50 V - Maximum repetitive reverse blocking voltage before breakdown |
| trr | 25 ns - Ultra-fast recovery enables >1 MHz switching in SMPS designs |
| VF @ 3A, 25°C | 0.875 V - Low conduction loss improves power stage efficiency |
| IR @ 50V, 25°C | 5 μA - Minimal leakage preserves system standby power integrity |
| TJ max | 175°C - Enables operation in high-temperature automotive engine compartments |
| RθJL | 11°C/W - Thermal resistance from junction to lead supports direct PCB heat sinking |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-anode/single-cathode configuration with cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side of load or switch node in freewheeling path |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to higher-potential rail or output node; blocks reverse voltage up to 50 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive power electronics including engine control and lighting modules |
| Glass-passivated junction | Enhanced moisture resistance and long-term stability under thermal cycling and humidity exposure |
| Ultra-fast trr = 25 ns | Reduces reverse recovery charge (Qrr), lowering EMI and switching losses in high-frequency converters |
| DO-214AB (SMC) package | Standardized footprint compatible with automated pick-and-place and reflow soldering per J-STD-020 Level 1 |
| Matte tin-plated leads | Ensures solderability and intermetallic compatibility with common PCB finishes (ENIG, HASL, OSP) |
Applications
| DC-DC Converter | Automotive Lighting |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12 V–48 V automotive buck-boost converters. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 25 ns trr and 0.875 V VF reduce conduction and switching losses, improving converter efficiency above 92% at 3 A load. | Use Scenario: LED driver output stage in headlamp and DRL modules. IC Role / Device Role / Timing Role: Freewheeling diode across inductive LED current regulators to clamp flyback voltage. Use Value: 75 A IFSM withstands transient surges during cold cranking; AEC-Q101 ensures lifetime reliability under vibration and thermal shock. |
| Snubber Circuit | Freewheeling Application |
Use Scenario: RCD snubber across MOSFET drain-source in high-side switch nodes. IC Role / Device Role / Timing Role: Fast-recovery clamp diode directing snubber energy to capacitor during turn-off. Use Value: 25 ns trr ensures precise timing alignment with MOSFET fall time, minimizing voltage overshoot and EMI generation. | Use Scenario: Inductive load commutation in fuel injector or solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional path for stored inductor energy dissipation when main switch opens. Use Value: 175°C TJ max and glass passivation enable stable operation in under-hood ambient up to 125°C with no parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L05S | Same DO-214AB package; VF = 0.85 V @ 3 A, 25°C; trr = 35 ns; not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial DC-DC but not under-hood automotive | Select STTH3L05S only if AEC-Q101 is not required and slightly slower recovery is acceptable |
| ON Semi MUR305W | Identical electrical specs (50 V, 3 A, 25 ns); same DO-214AB package; AEC-Q101 qualified; different marking and date code format | Drop-in functional replacement with identical thermal and electrical behavior in automotive designs | MUR305W offers second-source availability while maintaining full design compatibility with MUR305SH |
Compared with STTH3L05S and MUR305W, the MUR305SH provides certified automotive reliability and optimal trade-off between forward loss and recovery speed; MUR305W is a fully compatible alternative, while STTH3L05S requires requalification for automotive use.
Availability
MUR305SH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter, and snubber circuit designs requiring stable component supply, AEC-Q101 compliance, and consistent ultra-fast recovery performance.
Supply support for MUR305SH 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 devices, and automotive-qualified components.
The MUR305SH belongs to TSC's MURxSH ultra-fast rectifier product line, engineered specifically for high-efficiency, high-reliability automotive and industrial power conversion where fast recovery and thermal robustness are critical.
FAQ
What is the maximum junction temperature rating for the MUR305SH?
The MUR305SH has a maximum junction temperature (TJ max) of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows continuous operation in high-ambient automotive environments such as engine control units and headlamp modules. Derating curves confirm usable current capacity down to 1.2 A at 125°C ambient, making the MUR305SH suitable for thermally constrained PCB layouts where heatsinking is limited.
Is the MUR305SH AEC-Q101 qualified?
Yes, the MUR305SH is explicitly AEC-Q101 qualified, as confirmed in the "FEATURES" section of the Taiwan Semiconductor datasheet (Version B2212). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. The MUR305SH is approved for use in automotive powertrain, body electronics, and lighting systems where component reliability must meet stringent automotive quality standards.
What is the forward voltage drop of the MUR305SH at rated current?
The MUR305SH exhibits a typical forward voltage (VF) of 0.875 V at IF = 3 A and TJ = 25°C, and 0.710 V at TJ = 150°C, per the Electrical Specifications table. These values are measured under pulsed conditions (PW = 0.3 ms) and reflect low conduction loss essential for high-efficiency DC-DC stages. At elevated temperatures, the reduced VF further improves thermal stability in sustained-load applications like LED drivers.
Does the MUR305SH have a defined reverse recovery time?
Yes, the MUR305SH has a specified reverse recovery time (trr) of 25 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Electrical Specifications table. This ultra-fast recovery enables clean switching in high-frequency (>500 kHz) topologies and reduces switching losses and EMI compared to standard recovery rectifiers. The trr value remains stable across the -55°C to +175°C junction temperature range.
What package type does the MUR305SH use?
The MUR305SH uses the DO-214AB (SMC) surface-mount package, as documented in Mechanical Data and Ordering Information sections. Dimensions match JEDEC DO-214AB Variation AB, with overall size 7.75 mm × 6.25 mm × 2.45 mm and cathode polarity indicated by a visible band. The package supports automated assembly, meets UL 94V-0 flammability, and features matte tin-plated leads compliant with J-STD-002 solderability standards.
MUR305SH 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):
- 50 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 @ 50 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
MUR305SH FAQ
1.How can I place an order for MUR305SH through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR305SH 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 MUR305SH reliable?
The price and inventory of MUR305SH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR305SH is usually 5 days.
3.What payment methods are accepted for MUR305SH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR305SH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR305SH?
MUR305SH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR305SH 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 MUR305SH?
For technical support, including MUR305SH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR305SH requirements.
6.How does Aetrix verify that MUR305SH is sourced from the original manufacturer or authorized distributors?
All MUR305SH 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 MUR305SH meets industry standards.
7.What is the process for return or replacement of MUR305SH?
All MUR305SH units undergo pre-shipment inspection (PSI). If there is an issue with MUR305SH, 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 MUR305SH part is unused and in its original packaging.
Return procedure for MUR305SH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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