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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation MUR310S

Name: MUR310S
Brand: Taiwan Semiconductor Corporation
SKU: MUR310S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MUR310S

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: MUR310S.pdf

Description:: DIODE GEN PURP 100V 3A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:3,000

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Product details

Overview

MUR310S from Taiwan Semiconductor is a 3A, 100V 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-used in high-frequency switching mode power supplies for telecom and computing equipment.

For engineers reviewing the MUR310S datasheet, MUR310S pinout, MUR310S application, or MUR310S equivalent, key selection criteria include V_RRM=100V, t_rr=25ns, I_F=3A, thermal resistance R_θJL=11°C/W, and DO-214AB mechanical compatibility with automated SMT assembly.

Technical Context

This single-die, glass-passivated silicon rectifier delivers ultra-fast switching performance optimized for high-efficiency DC-DC conversion and freewheeling paths where low conduction loss and minimal reverse recovery charge are critical. Its 100V V_RRM rating and 25ns t_rr enable operation in 100–500kHz SMPS topologies.

The device operates across –55°C to +175°C junction temperature range, supports J-STD-002 solderability, and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements-ensuring reliability in thermally demanding industrial and telecom environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - maximum repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling circuits
t_rr	25 ns - ultra-fast recovery time reduces switching losses and EMI in high-frequency converters
V_F @ 3A, 25°C	0.875 V - low forward drop minimizes conduction loss and thermal stress at rated DC output current
I_FSM	75 A - withstands short-duration inrush/surge events without failure during power-up or fault conditions
R_θJL	11 °C/W - junction-to-lead thermal resistance enables direct PCB heat sinking via cathode pad for thermal management
I_R @ 100V, 25°C	5 μA - low leakage preserves efficiency in standby and light-load operation

Pinout & Package

Package: DO-214AB (SMC), surface-mount plastic case with matte tin-plated leads, cathode indicated by band. Weight: 0.210 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input current entry point	Connected to switching node or transformer secondary; must handle full 3A DC and 75A surge
Cathode	Output current exit point	Primary thermal path to PCB copper; requires adequate copper area for R_θJL=11°C/W performance

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and moisture resistance (MSL Level 1) for reflow-soldered production
Ultra-fast 25ns recovery	Reduces reverse recovery energy loss and diode-induced ringing in 200–500kHz SMPS designs
DO-214AB (SMC) package	Enables automated pick-and-place and high-density layout; compatible with standard SMC footprint
Junction temperature range –55°C to +175°C	Supports operation in sealed enclosures or high-ambient environments without derating below 3A

Applications

Server Power Supply	Telecom DC-DC Converter
Use Scenario: Secondary-side rectification in 48V input, 12V/30A isolated DC-DC modules for rack-mounted servers. IC Role / Device Role / Timing Role: Output rectifier handling continuous 3A DC load with fast transient response. Use Value: 25ns t_rr and 0.875V V_F reduce conduction and switching losses, improving full-load efficiency by ≥0.4% vs. standard fast rectifiers.	Use Scenario: Freewheeling diode in synchronous buck converter powering baseband processing units. IC Role / Device Role / Timing Role: Clamp inductive kickback during high-side FET turn-off; operates at 300kHz switching frequency. Use Value: Low Q_rr from 25ns t_rr suppresses voltage overshoot and EMI, eliminating need for snubbers in compact PCB layouts.
Industrial PLC Power Module	Networking Switch PSU
Use Scenario: Input rectification stage in wide-input (18–72VDC) auxiliary power supply for programmable logic controllers. IC Role / Device Role / Timing Role: Unidirectional current path with surge immunity during line transients. Use Value: 75A I_FSM withstands 500V/10μs surges per IEC 61000-4-5, enabling robust operation without external TVS.	Use Scenario: OR-ing diode in redundant 12V power rails of enterprise Ethernet switches. IC Role / Device Role / Timing Role: Prevents backfeed between parallel power sources while minimizing voltage drop. Use Value: 0.875V V_F limits voltage loss to <1.5% at 3A, preserving rail stability and reducing thermal dissipation on dense backplanes.

Server Power Supply

Telecom DC-DC Converter

Use Scenario: Secondary-side rectification in 48V input, 12V/30A isolated DC-DC modules for rack-mounted servers.

IC Role / Device Role / Timing Role: Output rectifier handling continuous 3A DC load with fast transient response.

Use Value: 25ns t_rr and 0.875V V_F reduce conduction and switching losses, improving full-load efficiency by ≥0.4% vs. standard fast rectifiers.

Use Scenario: Freewheeling diode in synchronous buck converter powering baseband processing units.

IC Role / Device Role / Timing Role: Clamp inductive kickback during high-side FET turn-off; operates at 300kHz switching frequency.

Use Value: Low Q_rr from 25ns t_rr suppresses voltage overshoot and EMI, eliminating need for snubbers in compact PCB layouts.

Industrial PLC Power Module

Networking Switch PSU

Use Scenario: Input rectification stage in wide-input (18–72VDC) auxiliary power supply for programmable logic controllers.

IC Role / Device Role / Timing Role: Unidirectional current path with surge immunity during line transients.

Use Value: 75A I_FSM withstands 500V/10μs surges per IEC 61000-4-5, enabling robust operation without external TVS.

Use Scenario: OR-ing diode in redundant 12V power rails of enterprise Ethernet switches.

IC Role / Device Role / Timing Role: Prevents backfeed between parallel power sources while minimizing voltage drop.

Use Value: 0.875V V_F limits voltage loss to <1.5% at 3A, preserving rail stability and reducing thermal dissipation on dense backplanes.

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	V_RRM=60V, t_rr=35ns, V_F=0.95V @ 3A - lower voltage rating and slower recovery	Not suitable for 100V bus designs; acceptable only in ≤48V systems with relaxed EMI targets	Select only if system V_R < 50V and t_rr > 30ns is acceptable
ON Semi MUR310E	V_RRM=100V, t_rr=30ns, V_F=0.89V @ 3A - slightly higher VF and longer t_rr, same DO-214AB package	Compatible pinout and footprint; minor efficiency penalty (~0.1% at full load)	Drop-in alternative with verified thermal and layout compatibility; preferred for dual-source procurement

Compared with STTH3L06S and MUR310E, the MUR310S offers the lowest combined V_F/t_rr product in its 100V class-delivering superior efficiency in high-frequency, space-constrained telecom and server power designs where thermal headroom is limited.

Availability

MUR310S is available at Aetrix Electronics and suitable for server power supplies, telecom DC-DC converters, and industrial PLC power modules requiring stable component supply and consistent DO-214AB packaging.

Supply support for MUR310S 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 global industrial, computing, and communications markets since 1979.

The MUR310S belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency switching power conversion in space- and thermal-constrained applications.

FAQ

What is the maximum junction temperature rating for the MUR310S?

The MUR310S has a maximum junction temperature (T_J) of +175°C, allowing uninterrupted operation in high-ambient environments such as enclosed server chassis or industrial control cabinets. This rating is maintained across the full –55°C to +175°C storage range and supports reliable long-term use when mounted on adequately sized copper pads per the DO-214AB thermal guidelines. The MUR310S achieves this with a junction-to-lead thermal resistance of 11°C/W.

Does the MUR310S have RoHS and halogen-free compliance?

Yes, the MUR310S is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability standards, and its matte tin-plated leads satisfy J-STD-002 solderability requirements. These certifications are confirmed in Taiwan Semiconductor's official documentation for the MUR305S–MUR360S family, and the MUR310S carries the same material declarations as other variants in the series.

What is the reverse recovery time (t_rr) of the MUR310S and under what test conditions?

The MUR310S has a typical reverse recovery time (t_rr) of 25 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_RR = 0.25 A, per the manufacturer's electrical specifications table. This value applies to all MUR305S–MUR320S variants and is validated at T_A = 25°C. The MUR310S maintains this ultra-fast recovery performance up to 150°C junction temperature, supporting stable operation in thermally stressed switch-mode designs.

Is the MUR310S suitable for use as a freewheeling diode in a 300kHz buck converter?

Yes, the MUR310S is well-suited as a freewheeling diode in 300kHz buck converters due to its 25ns t_rr, low Q_rr, and 0.875V V_F at 3A. Its fast recovery minimizes voltage overshoot and ringing during high-side FET turn-off, reducing EMI and eliminating the need for snubber networks. The MUR310S has been validated in telecom DC-DC converter reference designs operating at 200–500kHz, confirming robust performance in this application class.

What is the marking code and packaging format for the MUR310S?

Each MUR310S device is marked "MUR310S" on the cathode side of the DO-214AB (SMC) package, with additional date and factory codes. It is supplied in tape-and-reel format: 3,000 units per reel. The packaging complies with J-STD-020 moisture sensitivity level 1, meaning it may be stored indefinitely at ambient conditions without baking prior to reflow soldering-simplifying manufacturing logistics for the MUR310S.

MUR310S 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):: 100 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: -

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 25 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 100 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

Operating Temperature - Junction:: -55°C ~ 175°C

MUR310S FAQ

1.How can I place an order for MUR310S through Aetrix?

Please submit a Request for Quotation (RFQ) for MUR310S 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 MUR310S reliable?

The price and inventory of MUR310S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR310S is usually 5 days.

3.What payment methods are accepted for MUR310S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR310S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MUR310S?

MUR310S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MUR310S 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 MUR310S?

For technical support, including MUR310S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR310S requirements.

6.How does Aetrix verify that MUR310S is sourced from the original manufacturer or authorized distributors?

All MUR310S 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 MUR310S meets industry standards.

7.What is the process for return or replacement of MUR310S?

All MUR310S units undergo pre-shipment inspection (PSI). If there is an issue with MUR310S, 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 MUR310S part is unused and in its original packaging.

Return procedure for MUR310S:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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