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Taiwan Semiconductor Corporation MUR105SH
- Part No.:
- MUR105SH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
MUR105SH.pdf
- Description:
- DIODE GEN PURP 50V 1A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,962
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Product details
Overview
MUR105SH from Taiwan Semiconductor is a 1A, 50V ultra-fast recovery surface-mount rectifier diode in DO-214AA (SMB) package, featuring 25ns reverse recovery time, 0.875V forward voltage at 1A/25°C, and AEC-Q101 qualification for automotive use in DC-DC converters and freewheeling circuits.
For engineers reviewing the MUR105SH datasheet, MUR105SH pinout, MUR105SH application, or MUR105SH equivalent, key selection criteria include its 50V repetitive peak reverse voltage, 40A surge current rating, glass-passivated junction, moisture sensitivity level 1 compliance, and suitability for automated SMT assembly in space-constrained automotive lighting and snubber designs.
Technical Context
The MUR105SH employs a single-die silicon PN junction with ultra-fast recovery optimized for high-frequency switching applications. Its 25ns trr and low VF enable reduced switching losses in flyback and boost topologies operating up to several hundred kHz.
Thermally, it delivers 17°C/W junction-to-lead resistance and supports continuous operation from –55°C to +175°C junction temperature, with rated IF = 1A DC and IFSM = 40A (8.3ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe DC/AC reverse bias limit in snubber or freewheeling paths |
| IF | 1 A - Continuous forward current rating; sets maximum steady-state conduction capability without derating |
| trr | 25 ns - Measured at IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables efficient operation in >100 kHz switching circuits |
| VF | 0.875 V - At IF = 1A, TJ = 25°C; contributes to low conduction loss and thermal management in compact layouts |
| IR | 2 µA - Reverse leakage at rated VR and TJ = 25°C; ensures minimal standby power loss in high-impedance nodes |
| RθJL | 17 °C/W - Junction-to-lead thermal resistance; supports direct PCB copper pad heat sinking for 1A continuous load |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band on body. Matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode | Forward current exit point | Marked with band; connects to higher-potential rail (e.g., output capacitor positive) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| Glass passivated junction | Provides robust surface insulation against humidity, contamination, and mechanical stress during reflow and operation |
| Ultra-fast 25ns recovery | Minimizes reverse recovery charge (Qrr) and associated switching losses in high-frequency DC-DC stages |
| Moisture sensitivity level 1 | Enables unlimited floor life before reflow; eliminates baking requirement for standard SMT assembly |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS directives; supports environmentally compliant end-product certification |
Applications
| DC–DC Converter | Automotive Lighting |
|---|---|
Use Scenario: Output rectification in 12V–48V isolated flyback or non-isolated buck-boost converters. IC Role / Device Role / Timing Role: Freewheeling diode conducting during high-side switch off-time; handles 1A average output current. Use Value: 25ns trr and 0.875V VF reduce switching loss and thermal rise, enabling smaller heatsinks in headlamp driver modules. | Use Scenario: LED current regulation and transient suppression in adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: Snubber diode clamping inductive kickback from motorized actuator drivers. Use Value: 40A IFSM withstands repeated 12V battery load-dump transients; AEC-Q101 ensures field reliability over 15-year vehicle life. |
| Freewheeling Circuit | Snubber Network |
Use Scenario: Energy recirculation path across inductive loads such as fuel pump or HVAC blower motors. IC Role / Device Role / Timing Role: Unidirectional current path returning stored magnetic energy to supply rail during switch turn-off. Use Value: Low VF minimizes voltage drop during freewheeling, preserving system efficiency; DO-214AA footprint fits tight motor control PCB layouts. | Use Scenario: RCD clamp network in SMPS primary-side MOSFET protection. IC Role / Device Role / Timing Role: Fast-recovery diode directing transient energy into RC dissipation path. Use Value: 25ns trr prevents reverse conduction overlap with MOSFET turn-on, avoiding shoot-through risk in high-speed 300kHz+ designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06U | Same 1A/600V rating but 50ns trr; VF = 0.95V @ 1A; TO-277 package (smaller than SMB) | Higher VRRM allows reuse in multi-voltage platforms; slower trr limits >200kHz use | Select when broader voltage scalability needed and 50ns recovery acceptable |
| ES1D-E3/57T | 1A/200V, 35ns trr, VF = 0.92V @ 1A; same DO-214AA package; no AEC-Q101 | Lacks automotive qualification; suitable for industrial DC-DC but not safety-critical vehicle systems | Select for cost-sensitive non-automotive applications where AEC-Q101 is not mandated |
Compared with STTH1R06U and ES1D-E3/57T, the MUR105SH offers the fastest recovery (25ns) and automotive qualification at 50V rating-making it optimal for high-efficiency, space-constrained 12V automotive subsystems where low VF and rapid switching are prioritized over extended voltage range.
Availability
MUR105SH is available at Aetrix Electronics and suitable for automotive lighting, DC–DC converter design, and freewheeling circuit implementation requiring stable component supply, AEC-Q101 compliance, and consistent DO-214AA (SMB) packaging.
Supply support for MUR105SH 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 rectifiers, TVS diodes, MOSFETs, and power ICs.
The MUR105SH belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-frequency switching power supplies and automotive electronics demanding low-loss, high-reliability surface-mount diodes with validated AEC-Q101 performance.
FAQ
What is the maximum junction temperature rating for the MUR105SH?
The MUR105SH has a maximum junction temperature (TJ) rating of +175°C, with operational range from –55°C to +175°C. This wide thermal envelope supports under-hood automotive deployment and high-ambient industrial environments. The device maintains specified electrical parameters-including VF and trr-across this full range, and its 17°C/W RθJL enables effective thermal transfer to PCB copper when mounted per recommended pad layout.
Is the MUR105SH suitable for automotive applications?
Yes, the MUR105SH is AEC-Q101 qualified and explicitly listed for automotive applications including car lighting and DC–DC converters. It meets stringent stress tests for temperature cycling, high-temperature reverse bias, and mechanical robustness. Its glass-passivated junction, moisture sensitivity level 1, and halogen-free construction further align with automotive manufacturing and reliability requirements-making MUR105SH appropriate for Tier-1 and OEM production programs.
What does the "SH" suffix indicate in MUR105SH?
The "SH" suffix in MUR105SH denotes Taiwan Semiconductor's standard high-reliability surface-mount variant in DO-214AA (SMB) package, with matte tin-plated leads and J-STD-002 solderability. It distinguishes this version from through-hole or alternate termination variants and confirms compliance with moisture sensitivity level 1, RoHS, and halogen-free standards per IEC 61249-2-21-critical for automated SMT lines in automotive electronics manufacturing.
How does the MUR105SH compare to the MUR110SH in terms of key electrical parameters?
The MUR105SH and MUR110SH share identical package, thermal specs, and recovery time (25ns), but differ in VRRM (50V vs. 100V) and corresponding IR (2µA vs. 2µA at 25°C). VF is identical at 0.875V @ 1A/25°C. Designers selecting MUR105SH gain margin in low-VF and low-leakage performance for 12V systems, while MUR110SH extends reverse blocking for 24V/48V architectures-both retain the same ultra-fast switching behavior critical for high-efficiency power conversion.
What is the surge current rating of the MUR105SH and how is it tested?
The MUR105SH has a non-repetitive peak forward surge current (IFSM) rating of 40A, tested per JEDEC standard using an 8.3ms single half-sine waveform superimposed on rated DC load. This rating validates its ability to survive inrush currents and transient overloads-such as those seen during cold-crank battery events or motor startup-without degradation. The value is confirmed in the Absolute Maximum Ratings table and supported by Fig.7 in the official datasheet.
MUR105SH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 875 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 175°C
MUR105SH FAQ
1.How can I place an order for MUR105SH through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR105SH 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 MUR105SH reliable?
The price and inventory of MUR105SH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR105SH is usually 5 days.
3.What payment methods are accepted for MUR105SH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR105SH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR105SH?
MUR105SH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR105SH 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 MUR105SH?
For technical support, including MUR105SH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR105SH requirements.
6.How does Aetrix verify that MUR105SH is sourced from the original manufacturer or authorized distributors?
All MUR105SH 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 MUR105SH meets industry standards.
7.What is the process for return or replacement of MUR105SH?
All MUR105SH units undergo pre-shipment inspection (PSI). If there is an issue with MUR105SH, 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 MUR105SH part is unused and in its original packaging.
Return procedure for MUR105SH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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