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

Taiwan Semiconductor Corporation MUR305S V7G

Name: MUR305S V7G
Brand: Taiwan Semiconductor Corporation
SKU: MUR305S V7G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MUR305S V7G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: MUR305S V7G.pdf

Description:: DIODE GEN PURP 50V 3A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:9,993

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Product details

Overview

MUR305S from Taiwan Semiconductor is a 3A, 50V 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-designed for high-frequency freewheeling in switching-mode power supplies for telecom and computing equipment.

For engineers reviewing the MUR305S datasheet, MUR305S pinout, MUR305S application, or MUR305S equivalent, key selection criteria include ultra-fast trr performance, low VF at elevated junction temperature, robust thermal resistance (R_θJL = 11°C/W), and RoHS/halogen-free compliance for industrial-grade power conversion designs.

Technical Context

The MUR305S employs a glass-passivated single-die silicon junction optimized for high-efficiency rectification in DC-DC converters and SMPS secondary-side outputs. Its 25ns reverse recovery time minimizes switching losses during high-frequency operation up to several hundred kHz.

With a maximum repetitive peak reverse voltage of 50V and rated forward current of 3A, the device operates across –55°C to +175°C junction range and delivers stable performance under transient surge conditions (75A I_FSM, 8.3ms half-sine).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum blocking voltage before avalanche; defines usable input/output voltage headroom in low-voltage SMPS stages.
I_F	3 A continuous - Rated average forward current at 75°C case temperature; supports compact heatsinking in space-constrained PCB layouts.
t_rr	25 ns - Ultra-fast reverse recovery enables >200 kHz switching without excessive diode turn-off loss or EMI generation.
V_F	0.875 V @ 3A, 25°C - Low conduction loss improves system efficiency; drops to 0.710 V at 150°C for stable thermal behavior.
R_θJL	11 °C/W - Junction-to-lead thermal resistance allows direct PCB copper pour cooling without external heatsink in moderate-power applications.
I_R	5 μA @ 50V, 25°C - Low leakage preserves standby efficiency and prevents unintended bias in high-impedance control circuits.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node or ground return); requires adequate copper area for thermal dissipation.
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to positive rail or output capacitor; critical for correct polarity in freewheeling path placement.

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and moisture resistance (MSL Level 1), eliminating need for conformal coating in humid environments.
Ultra-fast 25 ns t_rr	Reduces switching loss and ringing in synchronous rectifier or flyback snubber circuits operating above 100 kHz.
RoHS & halogen-free	Meets IEC 61249-2-21 and global environmental compliance mandates for telecom and industrial end-equipment.
Junction temp range –55°C to +175°C	Enables deployment in under-hood automotive auxiliary supplies or industrial motor drive control boards without derating.

Applications

Telecom AC-DC Adapters	Server VRM Output Rectification
Use Scenario: Secondary-side rectification in 48V-input isolated DC-DC modules powering baseband processing units. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter topology, conducting during low-side FET off-time. Use Value: 25ns t_rr prevents cross-conduction loss and maintains >92% efficiency at 300 kHz switching frequency.	Use Scenario: Output rectification in multiphase CPU voltage regulator modules requiring fast transient response. IC Role / Device Role / Timing Role: Standby-path diode during light-load discontinuous conduction mode (DCM) operation. Use Value: 0.710 V V_F at 150°C ensures minimal dropout and stable regulation under thermal stress.
Industrial PLC Power Supplies	Networking Switch PoE Injectors
Use Scenario: Input bridge rectification in 24V/48V industrial SMPS with wide ambient temperature range. IC Role / Device Role / Timing Role: High-reliability rectifier in front-end AC/DC stage handling line surges and brownouts. Use Value: 75A I_FSM withstands repeated 8.3ms surges per IEC 61000-4-5, supporting EN 61000-6-2 compliance.	Use Scenario: Isolated DC-DC stage in IEEE 802.3bt Type 4 PoE injectors delivering up to 90W. IC Role / Device Role / Timing Role: Secondary-side ultra-fast rectifier in forward converter output stage. Use Value: Low R_θJL (11°C/W) enables direct thermal coupling to inner-layer copper, reducing hotspot temperature by ~15°C vs. standard SMC diodes.

Telecom AC-DC Adapters

Server VRM Output Rectification

Use Scenario: Secondary-side rectification in 48V-input isolated DC-DC modules powering baseband processing units.

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter topology, conducting during low-side FET off-time.

Use Value: 25ns t_rr prevents cross-conduction loss and maintains >92% efficiency at 300 kHz switching frequency.

Use Scenario: Output rectification in multiphase CPU voltage regulator modules requiring fast transient response.

IC Role / Device Role / Timing Role: Standby-path diode during light-load discontinuous conduction mode (DCM) operation.

Use Value: 0.710 V V_F at 150°C ensures minimal dropout and stable regulation under thermal stress.

Industrial PLC Power Supplies

Networking Switch PoE Injectors

Use Scenario: Input bridge rectification in 24V/48V industrial SMPS with wide ambient temperature range.

IC Role / Device Role / Timing Role: High-reliability rectifier in front-end AC/DC stage handling line surges and brownouts.

Use Value: 75A I_FSM withstands repeated 8.3ms surges per IEC 61000-4-5, supporting EN 61000-6-2 compliance.

Use Scenario: Isolated DC-DC stage in IEEE 802.3bt Type 4 PoE injectors delivering up to 90W.

IC Role / Device Role / Timing Role: Secondary-side ultra-fast rectifier in forward converter output stage.

Use Value: Low R_θJL (11°C/W) enables direct thermal coupling to inner-layer copper, reducing hotspot temperature by ~15°C vs. standard SMC diodes.

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 3A/50V rating, but 35ns t_rr; VF = 0.89V @ 3A/25°C; R_θJL = 13°C/W	Slightly higher conduction and switching loss; less suitable for >250 kHz designs	Acceptable where layout thermal margin exists and frequency ≤200 kHz
ON Semi MUR305T	Identical electrical specs, same DO-214AB package, but lead finish is SnPb (non-RoHS)	Not compliant with EU RoHS or halogen-free requirements	Only for legacy repair or non-regulated markets requiring Pb-based solder compatibility

Compared with STTH3L05S and MUR305T, the MUR305S offers superior 25ns recovery speed and full RoHS/halogen-free compliance while maintaining identical footprint and thermal performance-making it optimal for next-generation telecom and industrial SMPS where efficiency, reliability, and regulatory alignment are jointly critical.

Availability

MUR305S is available at Aetrix Electronics and suitable for telecom AC-DC adapters, server VRM output stages, and industrial PLC power supplies requiring stable component supply, consistent parametric performance, and full environmental compliance.

Supply support for MUR305S 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 MOSFETs since 1979.

The MUR305S belongs to TSC's ultra-fast recovery rectifier product line, engineered specifically for high-frequency switching power conversion in computing, communications, and industrial systems where low loss and thermal robustness are essential.

FAQ

What is the maximum junction temperature rating for the MUR305S?

The MUR305S has a maximum junction temperature (T_J) of +175°C, with a storage temperature range of –55°C to +175°C. This wide thermal capability allows reliable operation in high-ambient environments such as enclosed server power supplies or industrial control cabinets. The device maintains specified electrical parameters-including 0.710 V forward voltage-at full 175°C junction temperature, ensuring predictable performance under thermal stress. Derating curves confirm usable current capacity down to 1.8 A at 125°C case temperature.

Does the MUR305S have a halogen-free construction?

Yes, the MUR305S uses halogen-free molding compound compliant with IEC 61249-2-21, and is fully RoHS-compliant per EU Directive 2011/65/EU. The device carries no brominated flame retardants (BFRs), chlorinated flame retardants (CFRs), or antimony trioxide. This construction supports environmentally conscious design in telecom infrastructure and enterprise networking equipment where material declarations (e.g., IPC-1752A) are required for supply chain transparency.

What is the reverse recovery time (t_rr) of the MUR305S and how is it measured?

The MUR305S has a typical reverse recovery time (t_rr) of 25 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, I_RR = 0.25 A, and T_J = 25°C. This value is confirmed in the official Taiwan Semiconductor datasheet (Version J2212, Page 2). The ultra-fast t_rr results from optimized carrier lifetime control in the epitaxial layer, enabling efficient operation in high-frequency SMPS topologies without added snubbers or gate-drive timing adjustments.

Is the MUR305S suitable for use in automotive applications?

The MUR305S is not qualified to AEC-Q101 or designed for automotive safety-critical systems. While its –55°C to +175°C junction temperature range meets under-hood thermal requirements, Taiwan Semiconductor does not specify automotive-grade screening (e.g., HTOL, ESD, or board-level vibration testing) for the MUR305S. It may be used in non-safety automotive auxiliary supplies (e.g., infotainment power rails) only after full system-level qualification by the end customer, with explicit acknowledgment that TSC disclaims liability for automotive use per their notice on Page 6.

What packaging format is available for the MUR305S?

The MUR305S is supplied in tape-and-reel packaging: 3,000 units per reel, compatible with standard SMT pick-and-place equipment. The DO-214AB (SMC) package features matte tin-plated leads meeting J-STD-002 solderability requirements, and the device is rated MSL Level 1 (unlimited floor life), eliminating bake requirements prior to reflow. Reel dimensions and orientation follow JEDEC standards, with cathode band clearly marked for automated optical inspection (AOI) alignment.

MUR305S V7G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 50 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 @ 50 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

MUR305S V7G FAQ

1.How can I place an order for MUR305S V7G through Aetrix?

Please submit a Request for Quotation (RFQ) for MUR305S V7G 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 MUR305S V7G reliable?

The price and inventory of MUR305S V7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR305S V7G is usually 5 days.

3.What payment methods are accepted for MUR305S V7G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR305S V7G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MUR305S V7G?

MUR305S V7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MUR305S V7G 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 MUR305S V7G?

For technical support, including MUR305S V7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR305S V7G requirements.

6.How does Aetrix verify that MUR305S V7G is sourced from the original manufacturer or authorized distributors?

All MUR305S V7G 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 MUR305S V7G meets industry standards.

7.What is the process for return or replacement of MUR305S V7G?

All MUR305S V7G units undergo pre-shipment inspection (PSI). If there is an issue with MUR305S V7G, 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 MUR305S V7G part is unused and in its original packaging.

Return procedure for MUR305S V7G:

1.Submit a request within 90 days.

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

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