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

Taiwan Semiconductor Corporation MUR320SBH

Name: MUR320SBH
Brand: Taiwan Semiconductor Corporation
SKU: MUR320SBH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MUR320SBH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: MUR320SBH.pdf

Description:: DIODE GEN PURP 200V 3A DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:5,900

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Product details

Overview

MUR320SBH from Taiwan Semiconductor is an ultra-fast recovery surface-mount power rectifier 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-efficiency DC-DC converters and automotive freewheeling circuits.

For engineers reviewing the MUR320SBH datasheet, MUR320SBH pinout, MUR320SBH application, or MUR320SBH equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AA (SMB) package, 175 °C maximum junction temperature, and low forward voltage drop of 0.90 V at 3.0 A and 25 °C.

Technical Context

The MUR320SBH uses a single-die, glass-passivated silicon junction optimized for ultra-fast switching in high-frequency power conversion. Its 25 ns reverse recovery time enables reduced switching losses in snubber and freewheeling topologies operating up to several hundred kHz.

Thermally, it features R_θJL = 42 °C/W and R_θJA = 76 °C/W when mounted on a 10 mm × 10 mm copper pad, supporting sustained 3 A conduction at ambient temperatures up to 85 °C without forced cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines usable input voltage range in DC-DC and flyback designs.
I_F	3 A - Continuous average forward current; supports medium-power rectification without heatsinking under typical PCB thermal conditions.
t_rr	25 ns - Measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables high-frequency operation with minimal switching loss.
V_F	0.90 V max @ 3.0 A, 25 °C - Low conduction loss improves efficiency in 12–48 V automotive and industrial power rails.
T_J max	175 °C - High junction temperature rating allows reliable operation in under-hood automotive environments.
C_J	45 pF @ 1 MHz, 4 V - Low junction capacitance minimizes capacitive coupling and EMI in fast-switching nodes.

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band.

Pin/Terminal	Circuit Role	Design Meaning
Anode (lead 1)	Forward current entry point	Connected to lower-potential side (e.g., switch node or ground return) in freewheeling path.
Cathode (lead 2)	Forward current exit point	Connected to higher-potential rail (e.g., output capacitor positive or supply input); marked with cathode band.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47.
Glass passivated junction	Enhances moisture resistance and long-term stability of reverse leakage (I_R ≤ 150 µA at 150 °C).
Moisture sensitivity level 1	Enables direct placement without baking; compatible with standard SMT reflow profiles per J-STD-020.
Ultra-fast t_rr = 25 ns	Reduces turn-off energy loss in synchronous rectifier and active clamp circuits operating >100 kHz.

Applications

Automotive DC-DC Converters	LED Driver Freewheeling
Use Scenario: Step-down converter supplying 5 V/3 A to infotainment ECUs in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant buck topology. Use Value: 25 ns t_rr and 0.90 V V_F minimize conduction and switching losses, improving efficiency above 92% at full load.	Use Scenario: High-brightness LED headlamp driver with inductive current regulation. IC Role / Device Role / Timing Role: Freewheeling diode across boost inductor during MOSFET off-time. Use Value: AEC-Q101 qualification ensures robustness against automotive transients; 175 °C T_J max supports sealed lamp housing thermal environments.
Snubber Networks	Industrial Power Supplies
Use Scenario: RCD snubber across primary-side MOSFET in offline flyback SMPS. IC Role / Device Role / Timing Role: Fast-recovery clamp diode dissipating turn-off spike energy. Use Value: 200 V V_RRM withstands reflected flyback spikes; 25 ns t_rr prevents reverse recovery oscillation.	Use Scenario: Secondary-side rectification in 24 V/3 A industrial control power module. IC Role / Device Role / Timing Role: Main output rectifier in isolated forward converter. Use Value: DO-214AA package enables automated placement; RoHS/halogen-free compliance meets IPC-1752A reporting requirements.

Automotive DC-DC Converters

LED Driver Freewheeling

Use Scenario: Step-down converter supplying 5 V/3 A to infotainment ECUs in 12 V vehicle electrical systems.

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

Use Value: 25 ns t_rr and 0.90 V V_F minimize conduction and switching losses, improving efficiency above 92% at full load.

Use Scenario: High-brightness LED headlamp driver with inductive current regulation.

IC Role / Device Role / Timing Role: Freewheeling diode across boost inductor during MOSFET off-time.

Use Value: AEC-Q101 qualification ensures robustness against automotive transients; 175 °C T_J max supports sealed lamp housing thermal environments.

Snubber Networks

Industrial Power Supplies

Use Scenario: RCD snubber across primary-side MOSFET in offline flyback SMPS.

IC Role / Device Role / Timing Role: Fast-recovery clamp diode dissipating turn-off spike energy.

Use Value: 200 V V_RRM withstands reflected flyback spikes; 25 ns t_rr prevents reverse recovery oscillation.

Use Scenario: Secondary-side rectification in 24 V/3 A industrial control power module.

IC Role / Device Role / Timing Role: Main output rectifier in isolated forward converter.

Use Value: DO-214AA package enables automated placement; RoHS/halogen-free compliance meets IPC-1752A reporting requirements.

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 V_RRM, 3 A I_F, t_rr = 35 ns, TO-277 package	Higher voltage rating but slower recovery; larger footprint	Prefer when system requires >200 V blocking or higher surge immunity.
ON Semi MUR320E	Same V_RRM/I_F/t_rr, but not AEC-Q101 qualified; DO-214AA package	Lacks automotive qualification; suitable for industrial-only use	Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs.

Compared with STTH3L06S and MUR320E, the MUR320SBH uniquely combines 200 V rating, 25 ns recovery, AEC-Q101 qualification, and DO-214AA packaging-making it optimal for space-constrained, thermally demanding automotive power stages where qualification and speed are jointly critical.

Availability

MUR320SBH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED lighting drivers, and industrial power supplies requiring stable component supply and long-term lifecycle support.

Supply support for MUR320SBH 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 for automotive and industrial markets.

The MUR320SBH belongs to TSC's ultra-fast recovery rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive under-hood and industrial control applications.

FAQ

What is the maximum junction temperature rating for MUR320SBH?

The MUR320SBH has a maximum junction temperature (T_J) of +175 °C, verified per absolute maximum ratings in the official datasheet. This rating enables reliable operation in high-ambient environments such as automotive engine compartments. Derating curves confirm 3 A average forward current remains viable up to ~85 °C ambient when mounted on a 10 mm × 10 mm Cu pad. The MUR320SBH must not exceed this limit to maintain long-term reliability and avoid parametric shift.

Is MUR320SBH AEC-Q101 qualified?

Yes, the MUR320SBH is explicitly AEC-Q101 qualified, as stated in the "FEATURES" section of the official Taiwan Semiconductor datasheet. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD) per JESD47. The MUR320SBH is therefore approved for use in automotive powertrain, body electronics, and lighting systems where component-level reliability validation is mandatory.

What is the reverse recovery time (t_rr) of MUR320SBH and how is it measured?

The MUR320SBH has a maximum reverse recovery time (t_rr) of 25 ns, measured under specified test conditions: I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is confirmed in the "ELECTRICAL SPECIFICATIONS" table. The MUR320SBH achieves this performance via optimized carrier lifetime control in its ultra-fast silicon junction, directly reducing switching loss in high-frequency converters where the MUR320SBH is deployed.

What package type does MUR320SBH use and what are its mounting characteristics?

The MUR320SBH uses the DO-214AA (SMB) surface-mount package, with matte tin-plated leads solderable per J-STD-002. Its mechanical outline and suggested pad layout are documented in the "PACKAGE OUTLINE DIMENSIONS" section. The MUR320SBH is rated moisture sensitivity level 1 (per J-STD-020), allowing direct placement without pre-baking. Polarity is indicated by a cathode band on the molded case.

How does the forward voltage (V_F) of MUR320SBH vary with temperature and current?

The MUR320SBH forward voltage decreases with rising junction temperature: at 3.0 A and 25 °C, V_F is ≤ 0.90 V; at 3.0 A and 150 °C, it drops to ≤ 0.73 V. This negative temperature coefficient is typical of silicon PN junctions and improves thermal stability in parallel configurations. The MUR320SBH datasheet provides full V_F vs. I_F and temperature curves (Fig.4), confirming consistent low-loss behavior across its operational range.

MUR320SBH Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

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:: 900 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:: 45pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

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

MUR320SBH FAQ

1.How can I place an order for MUR320SBH through Aetrix?

Please submit a Request for Quotation (RFQ) for MUR320SBH 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 MUR320SBH reliable?

The price and inventory of MUR320SBH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR320SBH is usually 5 days.

3.What payment methods are accepted for MUR320SBH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR320SBH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MUR320SBH?

MUR320SBH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MUR320SBH 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 MUR320SBH?

For technical support, including MUR320SBH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR320SBH requirements.

6.How does Aetrix verify that MUR320SBH is sourced from the original manufacturer or authorized distributors?

All MUR320SBH 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 MUR320SBH meets industry standards.

7.What is the process for return or replacement of MUR320SBH?

All MUR320SBH units undergo pre-shipment inspection (PSI). If there is an issue with MUR320SBH, 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 MUR320SBH part is unused and in its original packaging.

Return procedure for MUR320SBH:

1.Submit a request within 90 days.

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

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