My Inquiry
My Account
Taiwan Semiconductor Corporation MUR320SH
- Part No.:
- MUR320SH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
MUR320SH.pdf
- Description:
- DIODE GEN PURP 200V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MUR320SH from Taiwan Semiconductor is an ultra-fast recovery surface-mount rectifier diode with 200 V repetitive peak reverse voltage (VRRM), 3 A average forward current (IF), and 25 ns reverse recovery time (trr), designed for high-efficiency DC-DC converters and automotive freewheeling circuits.
For engineers reviewing the MUR320SH datasheet, MUR320SH pinout, MUR320SH application, or MUR320SH equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AB (SMC) package, 0.875 V forward voltage at 3 A/25°C, 75 A non-repetitive surge rating, and glass-passivated junction for reliability in harsh environments.
Technical Context
The MUR320SH is a single-die, unidirectional silicon rectifier optimized for fast switching in power conversion stages where low conduction loss and minimal reverse recovery charge are critical. Its 25 ns trr enables operation at higher frequencies than standard fast recovery diodes, reducing switching losses in synchronous and snubber-assisted topologies.
It features a glass-passivated chip junction for enhanced moisture resistance and long-term stability under thermal cycling, with a maximum junction temperature of 175°C and JESD201 Class 2 whisker resistance - supporting automotive-grade reliability without hermetic packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Supports input rails up to 140 V DC with 1.4× safety margin for transient clamping in automotive 12 V systems. |
| IF | 3 A continuous - Delivers stable output in compact 3–5 W DC-DC modules without forced air cooling. |
| trr | 25 ns - Enables efficient operation at ≥200 kHz switching frequencies in flyback and buck-derived topologies. |
| VF @ 3 A, 25°C | 0.875 V - Limits conduction loss to ≤2.6 W per device at full load, minimizing thermal stress in SMC footprint. |
| RθJL | 11 °C/W - Allows direct PCB copper pour heatsinking to maintain TJ < 125°C at 3 A in ambient ≤85°C. |
| IFSM | 75 A (8.3 ms) - Withstands inrush and fault currents in automotive lighting and ECU power supplies. |
Pinout & Package
Package: DO-214AB (SMC), 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 (A) | Forward current entry point | Connected to lower-potential node (e.g., switch node in boost/flyback); must route with low-inductance trace. |
| Cathode (K) | Forward current exit point | Connected to output rail or ground return; polarity marking ensures correct orientation during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, and UHAST - suitable for under-hood ECUs and lighting modules. |
| Glass-passivated junction | Eliminates need for conformal coating in humid environments; prevents leakage drift and corrosion-induced failure over 15+ year service life. |
| Moisture sensitivity level 1 | No bake preconditioning required before reflow; compatible with standard SMT assembly lines without dry-pack handling. |
| Ultra-fast 25 ns recovery | Reduces reverse recovery charge (Qrr) to <15 nC, minimizing cross-conduction loss and EMI generation in hard-switched converters. |
Applications
| Automotive Lighting | DC-DC Converter Output Stage |
|---|---|
Use Scenario: LED headlamp driver with PWM dimming and overvoltage protection. IC Role / Device Role / Timing Role: Freewheeling diode in buck converter stage, conducting during low-side switch off-time. Use Value: 25 ns trr prevents shoot-through during high-frequency PWM transitions; 175°C TJMAX supports operation near hot LED heatsinks. | Use Scenario: 12 V to 5 V/3 A isolated flyback supply for infotainment system logic rails. IC Role / Device Role / Timing Role: Secondary-side rectifier converting transformer AC output to regulated DC. Use Value: 0.875 V VF at 3 A reduces conduction loss by 35% vs. standard FR107, improving efficiency from 82% to 85.5% at full load. |
| Snubber Network | Engine Control Unit (ECU) Power Supply |
Use Scenario: RCD snubber across MOSFET drain-source in ignition coil driver. IC Role / Device Role / Timing Role: Fast recovery path for inductive energy dissipation during turn-off. Use Value: Low Qrr and 200 V VRRM enable precise snubber timing without voltage overshoot exceeding 250 V during 400 V transients. | Use Scenario: Input rectification and hold-up in 12 V automotive ECU main power stage. IC Role / Device Role / Timing Role: Primary rectifier converting alternator AC to DC bus prior to buck regulation. Use Value: AEC-Q101 qualification and 75 A IFSM ensure survival during load dump events (ISO 7637-2 Pulse 5a) 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 | 600 V VRRM, 3 A IF, 35 ns trr, TO-277 package | Higher voltage rating but slower recovery; larger thermal resistance (RθJL = 15 °C/W) | Select when >400 V blocking is required and layout allows TO-277 footprint. |
| ON Semi MUR320 | Same VRRM/IF/trr, but not AEC-Q101 qualified; DO-214AB package | Lacks automotive qualification; IR spec differs (10 μA @ 25°C vs. MUR320SH's 5 μA) | Acceptable for industrial DC-DC where AEC-Q101 is not mandated; verify leakage tolerance in high-impedance bias networks. |
Compared with STTH3L06S and ON Semi MUR320, the MUR320SH uniquely combines AEC-Q101 compliance, 25 ns recovery, and 5 μA max reverse leakage at 25°C - making it the only option qualified for safety-critical automotive lighting and ECU power stages requiring both speed and reliability assurance.
Availability
MUR320SH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output stages, snubber networks, and engine control unit (ECU) power supplies requiring stable component supply and long-term lifecycle support.
Supply support for MUR320SH 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 since 1979.
The MUR320SH belongs to TSC's AEC-Q101-qualified ultra-fast rectifier family, engineered specifically for high-reliability automotive power conversion where low VF, fast trr, and robust thermal performance are mandatory.
FAQ
What is the maximum junction temperature rating for MUR320SH?
The MUR320SH has a maximum junction temperature (TJMAX) of +175°C, enabling operation in under-hood automotive environments and high-density power modules. This rating is validated per JEDEC JESD22-A108 and supported by its 11 °C/W junction-to-lead thermal resistance. Derating curves in the official datasheet confirm 3 A continuous current capability up to 125°C ambient when mounted on ≥1 in² 2-oz copper.
Is MUR320SH pin-compatible with other DO-214AB rectifiers like MUR320?
Yes, MUR320SH uses the standard DO-214AB (SMC) package with identical mechanical dimensions and cathode-band polarity marking as MUR320 and industry-standard equivalents. However, MUR320SH adds AEC-Q101 qualification and tighter IR specification (5 μA vs. 10 μA), so board-level compatibility does not imply functional interchangeability in automotive designs without requalification.
What is the reverse recovery time (trr) of MUR320SH and how is it measured?
The MUR320SH has a typical reverse recovery time (trr) of 25 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and IRR = 0.25 A per JEDEC JESD282B. This value is confirmed across the MUR305SH–MUR320SH subgroup and remains stable from 25°C to 150°C junction temperature, supporting consistent timing in high-frequency switching applications.
Does MUR320SH meet RoHS and halogen-free requirements?
Yes, MUR320SH is RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. The molding compound is UL 94V-0 rated, and terminals are matte tin plated per J-STD-002. These compliance attributes are verified in TSC's Certificate of Compliance (CoC) and material declarations available upon request.
What is the marking code printed on the MUR320SH device body?
The MUR320SH is marked with "MUR320S" on the device body, followed by date code and factory identifier per TSC's standard DO-214AB marking diagram. This distinguishes it from non-SH variants (e.g., MUR320) and confirms AEC-Q101 qualification and green compound formulation. The cathode band is located adjacent to the marking area for unambiguous polarity identification.
MUR320SH 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):
- 200 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 @ 200 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
MUR320SH FAQ
1.How can I place an order for MUR320SH through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR320SH 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 MUR320SH reliable?
The price and inventory of MUR320SH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR320SH is usually 5 days.
3.What payment methods are accepted for MUR320SH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR320SH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR320SH?
MUR320SH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR320SH 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 MUR320SH?
For technical support, including MUR320SH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR320SH requirements.
6.How does Aetrix verify that MUR320SH is sourced from the original manufacturer or authorized distributors?
All MUR320SH 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 MUR320SH meets industry standards.
7.What is the process for return or replacement of MUR320SH?
All MUR320SH units undergo pre-shipment inspection (PSI). If there is an issue with MUR320SH, 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 MUR320SH part is unused and in its original packaging.
Return procedure for MUR320SH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MUR320SH Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
