Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Taiwan Semiconductor Corporation MUR320S

Name: MUR320S
Brand: Taiwan Semiconductor Corporation
SKU: MUR320S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MUR320S

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: MUR320S.pdf

Description:: DIODE GEN PURP 200V 3A DO214AB

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,000

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MUR320S from Taiwan Semiconductor is an ultra-fast recovery surface-mount rectifier diode with 200 V repetitive peak reverse voltage (V_RRM), 3 A average forward current (I_F), and 25 ns reverse recovery time (t_rr), designed for high-frequency switching mode power supplies in telecom and computing infrastructure.

For engineers reviewing the MUR320S datasheet, MUR320S pinout, MUR320S application, or MUR320S equivalent, key selection criteria include its DO-214AB (SMC) package compatibility, 0.875 V forward voltage at 3 A/25°C, 75 A non-repetitive surge rating, and cathode-band polarity marking for PCB layout verification.

Technical Context

The MUR320S is a single-die, silicon planar junction rectifier optimized for high-efficiency DC-DC conversion where fast switching and low conduction loss are critical. Its glass-passivated chip junction ensures stable operation under thermal cycling and humidity exposure.

It operates across a junction temperature range of –55°C to +175°C and exhibits 11°C/W junction-to-lead thermal resistance, enabling reliable performance in compact, thermally constrained SMT layouts without forced airflow.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum reverse blocking capability for 200 V bus applications
I_F	3 A - Continuous forward current rating at T_L = 115°C, suitable for mid-power SMPS outputs
t_rr	25 ns - Ultra-fast recovery minimizes switching losses in >100 kHz converters
V_F	0.875 V @ 3 A, 25°C - Low forward drop improves efficiency and reduces heat generation
I_FSM	75 A - Withstands 8.3 ms half-sine surge, supporting inrush and fault transients
R_θJL	11 °C/W - Enables direct thermal path to PCB copper, simplifying heatsinking

Pinout & Package

Package: DO-214AB (SMC), surface-mount plastic case with matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), UL 94V-0 rated molding compound, and cathode polarity indicated by a band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., switch node or transformer secondary center-tap)
Cathode	Forward current exit / reverse blocking terminal	Marked with band; connects to output rail or filter capacitor positive terminal

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term reliability under humid environments and thermal stress, meeting JESD201 Class 2 whisker resistance
Ultra-fast 25 ns recovery	Reduces reverse recovery charge (Q_rr) and associated switching losses in high-frequency topologies
DO-214AB (SMC) package	Supports automated pick-and-place assembly and provides superior power density vs. DO-41 or SMA
RoHS & halogen-free compliance	Meets IEC 61249-2-21 and global environmental directives for industrial and telecom end equipment

Applications

Server VRM Output Rectification	Telecom DC-DC Converter Secondary Side
Use Scenario: High-current, high-efficiency 12 V → 1.2 V point-of-load conversion in rack-mounted servers. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 25 ns t_rr and 0.875 V V_F reduce conduction and switching losses, improving overall VRM efficiency above 92%.	Use Scenario: Isolated 48 V input to 5–12 V output in telecom base station power modules. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward or LLC resonant converter secondary. Use Value: 75 A I_FSM withstands transient overloads during hot-swap events; DO-214AB footprint enables dense layout.
Industrial PLC Power Supply	Networking Switch Mid-Board Power
Use Scenario: 24 V auxiliary supply in programmable logic controllers with wide ambient temperature range. IC Role / Device Role / Timing Role: Input rectifier for offline AC-DC stage or DC-DC pre-regulator. Use Value: –55°C to +175°C operating range ensures reliability in uncooled enclosures; 11°C/W R_θJL supports natural convection cooling.	Use Scenario: 12 V/3.3 V local regulation on multi-layer Ethernet switch PCBs. IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated buck-derived topologies. Use Value: Cathode-band polarity and standardized DO-214AB pad layout simplify design reuse and manufacturing verification.

Server VRM Output Rectification

Telecom DC-DC Converter Secondary Side

Use Scenario: High-current, high-efficiency 12 V → 1.2 V point-of-load conversion in rack-mounted servers.

IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology.

Use Value: 25 ns t_rr and 0.875 V V_F reduce conduction and switching losses, improving overall VRM efficiency above 92%.

Use Scenario: Isolated 48 V input to 5–12 V output in telecom base station power modules.

IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward or LLC resonant converter secondary.

Use Value: 75 A I_FSM withstands transient overloads during hot-swap events; DO-214AB footprint enables dense layout.

Industrial PLC Power Supply

Networking Switch Mid-Board Power

Use Scenario: 24 V auxiliary supply in programmable logic controllers with wide ambient temperature range.

IC Role / Device Role / Timing Role: Input rectifier for offline AC-DC stage or DC-DC pre-regulator.

Use Value: –55°C to +175°C operating range ensures reliability in uncooled enclosures; 11°C/W R_θJL supports natural convection cooling.

Use Scenario: 12 V/3.3 V local regulation on multi-layer Ethernet switch PCBs.

IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated buck-derived topologies.

Use Value: Cathode-band polarity and standardized DO-214AB pad layout simplify design reuse and manufacturing verification.

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	Same DO-214AB package, 600 V V_RRM, 35 ns t_rr, 0.95 V V_F @ 3 A	Higher voltage rating suits 400 V bus designs; slower recovery increases switching loss at >200 kHz	Select when higher reverse margin is required and frequency ≤150 kHz
MBR320F	DO-214AC (SMA) package, 200 V V_RRM, Schottky architecture, 0.52 V V_F, no reverse recovery	Lower V_F improves light-load efficiency but limits max T_J to 125°C and blocks <100 V applications	Prefer for low-voltage, low-T_J designs where zero Q_rr outweighs thermal derating

Compared with STTH3L06S and MBR320F, the MUR320S delivers optimal balance of 200 V rating, 25 ns speed, and 175°C capability-making it ideal for thermally demanding, medium-voltage, high-frequency rectification where Schottky limitations or slower recovery are unacceptable.

Availability

MUR320S is available at Aetrix Electronics and suitable for server VRMs, telecom DC-DC converters, and industrial PLC power supplies requiring stable component supply, full traceability, and long-lifecycle support.

Supply support for MUR320S 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 industrial, computing, and communications markets since 1979.

The MUR320S belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-frequency switching power conversion where low recovery charge and robust thermal performance are essential.

FAQ

What is the maximum junction temperature rating for the MUR320S?

The MUR320S has a maximum junction temperature (T_J) rating of +175°C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as enclosed industrial power supplies or telecom rectifiers without active cooling. The MUR320S maintains specified electrical performance up to this limit, provided thermal design respects the 11°C/W junction-to-lead resistance and appropriate PCB copper area is allocated.

Does the MUR320S have a RoHS-compliant and halogen-free construction?

Yes, the MUR320S is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability standards, and terminals are matte tin plated per J-STD-002 solderability requirements. These attributes are confirmed in the official Taiwan Semiconductor datasheet revision J2212 and apply specifically to the MUR320S ordering code.

What is the reverse recovery time (t_rr) of the MUR320S and under what test conditions is it measured?

The MUR320S reverse recovery time is 25 ns, measured at I_F = 0.5 A, I_R = 1.0 A, I_RR = 0.25 A, per the Electrical Specifications table. This value is guaranteed across the full production lot and reflects actual device behavior in high-frequency switching circuits. The MUR320S achieves this performance via optimized doping and lifetime control in its ultra-fast silicon junction.

Can the MUR320S be used as a direct replacement for the MUR315S in an existing design?

Yes, the MUR320S is a direct voltage-grade upgrade from the MUR315S (150 V) to 200 V V_RRM while retaining identical package (DO-214AB), pinout, thermal characteristics, and forward conduction parameters. No PCB or schematic changes are needed. The MUR320S maintains the same 25 ns t_rr, 0.875 V V_F, and 75 A I_FSM, making it a seamless drop-in solution for enhanced reverse voltage margin.

What does the "S" suffix in MUR320S indicate in Taiwan Semiconductor's ordering nomenclature?

The "S" suffix in MUR320S denotes surface-mount packaging in the DO-214AB (SMC) case, distinguishing it from through-hole variants. It confirms tape-and-reel packaging (3,000 units per reel), matte tin-plated leads, and compliance with J-STD-020 moisture sensitivity level 1. This designation applies exclusively to the MUR320S and is not interchangeable with other suffixes like "A" or "G" in the same family.

MUR320S 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:: -

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

Reverse Recovery Time (trr):: 25 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 200 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

MUR320S FAQ

1.How can I place an order for MUR320S through Aetrix?

Please submit a Request for Quotation (RFQ) for MUR320S 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 MUR320S reliable?

The price and inventory of MUR320S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR320S is usually 5 days.

3.What payment methods are accepted for MUR320S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR320S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MUR320S?

MUR320S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MUR320S 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 MUR320S?

For technical support, including MUR320S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR320S requirements.

6.How does Aetrix verify that MUR320S is sourced from the original manufacturer or authorized distributors?

All MUR320S 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 MUR320S meets industry standards.

7.What is the process for return or replacement of MUR320S?

All MUR320S units undergo pre-shipment inspection (PSI). If there is an issue with MUR320S, 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 MUR320S part is unused and in its original packaging.

Return procedure for MUR320S:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

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, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…