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

Taiwan Semiconductor Corporation MUR340S V7G

Name: MUR340S V7G
Brand: Taiwan Semiconductor Corporation
SKU: MUR340S V7G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MUR340S V7G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: MUR340S V7G.pdf

Description:: DIODE GEN PURP 400V 3A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:6,147

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Product details

Overview

MUR340S V7G from Taiwan Semiconductor is an ultra-fast recovery surface-mount rectifier diode with 400 V repetitive peak reverse voltage (V_RRM), 3 A average forward current (I_F), and 50 ns reverse recovery time (t_rr), designed for high-frequency switching mode power supplies in telecom and computing infrastructure.

For engineers reviewing the MUR340S V7G datasheet, MUR340S V7G pinout, MUR340S V7G application, or MUR340S V7G equivalent, key selection criteria include its DO-214AB (SMC) package compatibility, 1.25 V forward voltage at 3 A/25°C, 250 μA reverse leakage at 150°C, and suitability for freewheeling and snubber circuits in compact DC-DC converters.

Technical Context

The MUR340S V7G employs a single-die, glass-passivated PN junction optimized for ultra-fast recovery (50 ns), enabling reduced switching losses in high-frequency (>100 kHz) topologies. Its thermal design supports continuous operation up to 175°C junction temperature with 11°C/W junction-to-lead thermal resistance.

Rated for 75 A non-repetitive surge current (8.3 ms half-sine), it meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1-enabling direct use in lead-free reflow without baking.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - blocks up to 400 V reverse voltage in flyback or boost converter output stages
I_F	3 A continuous - sustains full-load current in 30–60 W SMPS designs
t_rr	50 ns - minimizes turn-off loss and EMI in 200–500 kHz switching applications
V_F	1.25 V @ 3 A, 25°C - determines conduction loss and thermal rise in high-duty-cycle rectification
I_R	250 μA @ 400 V, 150°C - ensures low leakage in high-temp industrial environments
R_θJL	11 °C/W - enables direct PCB copper pour heatsinking without external heatsink

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to switch node or transformer secondary center-tap in bridge/freewheeling configurations
Cathode	Forward current exit / reverse blocking terminal	Connected to output rail or ground return; cathode band marks this terminal on body

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term reliability under humidity and thermal cycling stress per J-STD-020
Ultra-fast 50 ns recovery	Reduces switching loss and improves efficiency in >200 kHz DC-DC converters
DO-214AB (SMC) package	Supports automated placement and provides 1.95 mm lead spacing for IPC-compliant layout
Junction temperature range –55°C to +175°C	Enables operation in sealed industrial enclosures without derating below 125°C ambient

Applications

Telecom AC-DC Adapters	Server VRM Output Rectification
Use Scenario: Secondary-side rectification in 100–200 W isolated AC-DC adapters for 5G baseband units. IC Role / Device Role / Timing Role: Ultra-fast output rectifier replacing slower FR-type diodes to reduce conduction and switching loss. Use Value: Enables 92%+ efficiency at 250 kHz switching frequency with <1.3 V forward drop at full load.	Use Scenario: Synchronous rectifier companion or freewheeling diode in multiphase buck converters for CPU/GPU VRMs. IC Role / Device Role / Timing Role: Freewheeling path during high-side MOSFET off-time in 300–600 kHz multi-phase topologies. Use Value: 50 ns t_rr prevents cross-conduction loss and limits voltage overshoot across synchronous FETs.
Industrial PLC Power Modules	LED Driver Flyback Outputs
Use Scenario: Input rectification and snubber clamping in DIN-rail mounted 24 V/48 V DC power modules. IC Role / Device Role / Timing Role: Primary rectifier and transient clamp in wide-input-range offline converters operating at –40°C to +70°C ambient. Use Value: 175°C T_JMAX and 250 μA I_R at 150°C ensure stable performance in unventilated control cabinets.	Use Scenario: Output rectification in constant-current flyback LED drivers for street lighting (30–100 W). IC Role / Device Role / Timing Role: High-voltage output rectifier handling 400 V reverse stress during LED open-circuit fault conditions. Use Value: 400 V V_RRM margin accommodates reflected transients while maintaining <1.3 V V_F for thermal management.

Telecom AC-DC Adapters

Server VRM Output Rectification

Use Scenario: Secondary-side rectification in 100–200 W isolated AC-DC adapters for 5G baseband units.

IC Role / Device Role / Timing Role: Ultra-fast output rectifier replacing slower FR-type diodes to reduce conduction and switching loss.

Use Value: Enables 92%+ efficiency at 250 kHz switching frequency with <1.3 V forward drop at full load.

Use Scenario: Synchronous rectifier companion or freewheeling diode in multiphase buck converters for CPU/GPU VRMs.

IC Role / Device Role / Timing Role: Freewheeling path during high-side MOSFET off-time in 300–600 kHz multi-phase topologies.

Use Value: 50 ns t_rr prevents cross-conduction loss and limits voltage overshoot across synchronous FETs.

Industrial PLC Power Modules

LED Driver Flyback Outputs

Use Scenario: Input rectification and snubber clamping in DIN-rail mounted 24 V/48 V DC power modules.

IC Role / Device Role / Timing Role: Primary rectifier and transient clamp in wide-input-range offline converters operating at –40°C to +70°C ambient.

Use Value: 175°C T_JMAX and 250 μA I_R at 150°C ensure stable performance in unventilated control cabinets.

Use Scenario: Output rectification in constant-current flyback LED drivers for street lighting (30–100 W).

IC Role / Device Role / Timing Role: High-voltage output rectifier handling 400 V reverse stress during LED open-circuit fault conditions.

Use Value: 400 V V_RRM margin accommodates reflected transients while maintaining <1.3 V V_F for thermal management.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-fast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L04	400 V V_RRM, 3 A I_F, 55 ns t_rr, TO-220AC package	Through-hole mounting; higher thermal mass but requires hole drilling and wave solder	Prefer when board-level thermal dissipation exceeds SMC capability or legacy through-hole assembly is mandated
ON Semi MUR340E	400 V V_RRM, 3 A I_F, 50 ns t_rr, same DO-214AB package, but 1.35 V V_F @ 3 A/25°C	Identical footprint and pinout; slightly higher forward drop increases conduction loss by ~8%	Select when supply chain diversification is required and 0.1 V higher V_F is acceptable in thermal budget

Compared with STTH3L04 and MUR340E, the MUR340S V7G offers identical ultra-fast recovery and voltage rating in a surface-mount DO-214AB package with the lowest forward voltage (1.25 V), optimizing efficiency in space-constrained, high-frequency power stages.

Availability

MUR340S V7G is available at Aetrix Electronics and suitable for telecom AC-DC adapters, server VRM power modules, and industrial PLC power supplies requiring stable component supply and RoHS/halogen-free compliance.

Supply support for MUR340S V7G 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 MUR340S V7G belongs to TSC's MUR3xS ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency switching power conversion in computing, communications, and industrial equipment.

FAQ

What is the maximum junction temperature rating for MUR340S V7G?

The MUR340S V7G has a maximum junction temperature (T_JMAX) of +175°C, allowing uninterrupted operation in high-ambient-temperature environments such as sealed industrial enclosures or densely packed telecom power modules. This rating is validated per JEDEC test conditions and supports full 3 A current derating up to 125°C ambient without external heatsinking.

Does MUR340S V7G meet RoHS and halogen-free requirements?

Yes, the MUR340S V7G is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants or chlorine-based additives, and all terminals are matte tin-plated to meet J-STD-002 solderability standards-ensuring compatibility with lead-free reflow processes.

What is the reverse recovery time (t_rr) of MUR340S V7G and how is it measured?

The MUR340S V7G has a typical reverse recovery time (t_rr) of 50 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_RR = 0.25 A per the manufacturer's test setup. This value is confirmed across production lots and directly impacts switching loss in high-frequency converters where MUR340S V7G is deployed.

Is MUR340S V7G pin-compatible with other DO-214AB rectifiers like MUR360S or STTH3L04?

MUR340S V7G shares the DO-214AB (SMC) package and two-terminal anode/cathode configuration with MUR360S, making them mechanically and electrically interchangeable in layout-though MUR360S has 600 V V_RRM. It is not pin-compatible with STTH3L04, which uses TO-220AC and requires different mounting and thermal design.

What is the forward voltage (V_F) of MUR340S V7G at elevated temperature?

At 3 A forward current and 150°C junction temperature, the MUR340S V7G exhibits a maximum forward voltage of 1.050 V. This lower V_F at high temperature-compared to room-temperature 1.250 V-reduces thermal runaway risk and improves system efficiency stability across operating temperature ranges.

MUR340S 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):: 400 V

Current - Average Rectified (Io):: 3A

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

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 400 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

MUR340S V7G FAQ

1.How can I place an order for MUR340S V7G through Aetrix?

Please submit a Request for Quotation (RFQ) for MUR340S 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 MUR340S V7G reliable?

The price and inventory of MUR340S V7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR340S V7G is usually 5 days.

3.What payment methods are accepted for MUR340S V7G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR340S V7G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MUR340S V7G?

MUR340S V7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MUR340S 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 MUR340S V7G?

For technical support, including MUR340S V7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR340S V7G requirements.

6.How does Aetrix verify that MUR340S V7G is sourced from the original manufacturer or authorized distributors?

All MUR340S 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 MUR340S V7G meets industry standards.

7.What is the process for return or replacement of MUR340S V7G?

All MUR340S V7G units undergo pre-shipment inspection (PSI). If there is an issue with MUR340S 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 MUR340S V7G part is unused and in its original packaging.

Return procedure for MUR340S V7G:

1.Submit a request within 90 days.

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

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