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Diodes Incorporated MURS140-13-F
- Part No.:
- MURS140-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
MURS140-13-F.pdf
- Description:
- DIODE GEN PURP 400V 1A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:26,877
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Product details
Overview
MURS140-13-F from Diodes Incorporated is a 1.0A, 400V super-fast recovery surface-mount rectifier diode in SMB package, featuring 50ns reverse recovery time, 1.25V forward voltage at 1.0A/25°C, and 35A non-repetitive surge rating - deployed in high-frequency AC/DC converters and switch-mode power supplies for efficient flyback and boost stage rectification.
For engineers reviewing the MURS140-13-F datasheet, MURS140-13-F pinout, MURS140-13-F application, or MURS140-13-F equivalent, key selection criteria include peak reverse voltage (400V), thermal resistance (15°C/W), junction temperature range (–55°C to +150°C), RoHS-compliant lead-free finish, and SMB package compatibility with automated SMT assembly.
Technical Context
This super-fast rectifier uses glass-passivated die construction to achieve stable switching performance under repetitive surge stress and elevated junction temperatures. Its 50ns trr and low 10pF junction capacitance enable operation in 100kHz–500kHz SMPS topologies without excessive switching loss or EMI generation.
The device operates with a cathode-band polarity marker and is rated for 1.0A average forward current at terminal temperature up to +135°C. Thermal design relies on PCB copper pads (5.0mm², 0.013mm thick) as heatsink, per its 15°C/W RθJT specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400V - supports input rectification in universal-input (85–265VAC) offline SMPS without derating |
| IO | 1.0A @ TT = +135°C - defines continuous output capability in compact, thermally constrained layouts |
| trr | 50ns - enables high-frequency switching with minimal reverse recovery loss and reduced snubber demand |
| VFM | 1.25V @ IF = 1.0A, TJ = +25°C - determines conduction loss contribution in efficiency-critical secondary-side rectification |
| RθJT | 15°C/W - quantifies thermal path efficiency from junction to PCB pad, critical for thermal margin in sealed enclosures |
| IFSM | 35A peak (8.3ms half-sine) - withstands inrush and transient overloads in AC line-started power supplies |
| IRM | 5.0µA @ VR = 400V, TA = +25°C - ensures low leakage in high-impedance hold-up or sensing circuits |
Pinout & Package
Package: SMB (Surface-Mount Body), molded plastic UL 94V-0, matte tin-plated terminals, cathode identified by band or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to transformer secondary or switching node; must handle 1.0A DC and 35A surge |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or filter capacitor; sustains 400V reverse bias continuously |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability and moisture resistance in humid industrial environments |
| Super-fast 50ns recovery | Reduces switching losses and EMI in >100kHz DC-DC converters and PFC stages |
| 35A surge rating | Eliminates need for external inrush limiting in cost-sensitive AC/DC adapters |
| Lead-free, halogen-free "Green" construction | Meets IPC-J-STD-020 Level 1 moisture sensitivity and automotive ELV compliance requirements |
Applications
| AC/DC Adapters | LED Driver Secondary Rectification |
|---|---|
Use Scenario: 12V/1A isolated flyback converter powering consumer electronics. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to regulated DC. Use Value: 50ns trr minimizes reverse recovery loss, improving efficiency by ~0.8% vs. standard fast rectifiers at 250kHz. |
Use Scenario: Constant-current LED driver with 36V output for commercial lighting. IC Role / Device Role / Timing Role: High-reliability secondary-side rectifier handling 1A continuous load with frequent thermal cycling. Use Value: –55°C to +150°C operating range and glass passivation ensure stable performance across outdoor ambient extremes. |
| Industrial SMPS Power Modules | Automotive Auxiliary Power Supplies |
Use Scenario: 24V/1A board-mounted power module for PLC I/O cards. IC Role / Device Role / Timing Role: Primary output rectifier in compact, convection-cooled enclosure with limited heatsinking. Use Value: 15°C/W RθJT allows full 1.0A load at +70°C ambient without forced air, reducing system BOM cost. |
Use Scenario: 12V auxiliary supply in infotainment head unit with cold-crank tolerance. IC Role / Device Role / Timing Role: Input-stage rectifier handling 35A surge during battery jump-start events. Use Value: 35A IFSM rating meets ISO 16750-2 pulse 4 requirement without external TVS or fusing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | Same SMB package, 600V VRRM, 55ns trr, 1.7V VFM @ 1A | Better voltage margin but higher conduction loss; suited for 230VAC-only systems | Select when higher reverse voltage headroom is required and efficiency at light load is less critical |
| ES1D-E3/57T | SMB package, 200V VRRM, 35ns trr, 1.7V VFM @ 1A | Faster recovery but lower voltage rating; not suitable for universal-input designs | Prefer only in low-voltage DC-DC outputs where <200V blocking suffices and ultra-low trr is prioritized |
Compared with STTH1L06S and ES1D-E3/57T, MURS140-13-F delivers optimal balance of 400V blocking, 50ns speed, and 1.25V forward drop - making it the most widely applicable choice for universal-input 1A SMPS designs requiring both efficiency and robustness.
Availability
MURS140-13-F is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, industrial SMPS modules, and automotive auxiliary power supplies requiring stable component supply, consistent parametric performance, and full traceability across production lots.
Supply support for MURS140-13-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-efficiency power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
MURS140-13-F belongs to Diodes' MURS super-fast rectifier product line, engineered specifically for high-frequency, high-reliability secondary-side rectification in space-constrained, thermally demanding power conversion systems.
FAQ
What is the maximum allowable junction temperature for MURS140-13-F?
The absolute maximum junction temperature is +150°C, with derated average forward current beginning at terminal temperatures above +135°C. The device maintains specified electrical characteristics across its full –55°C to +150°C operating range, and thermal design must account for RθJT = 15°C/W using recommended 5.0mm² copper pad area.
Is MURS140-13-F suitable for automotive applications?
MURS140-13-F is not AEC-Q200 qualified; however, Diodes offers the automotive-compliant MURS160Q variant (600V) under a separate datasheet. For non-safety-critical auxiliary functions in cabin electronics, MURS140-13-F may be used subject to full system-level qualification, including thermal validation and lifetime stress testing per customer requirements.
How does the 50ns reverse recovery time impact EMI in SMPS designs?
A 50ns trr reduces high-frequency ringing and dv/dt-induced noise during turn-off, lowering common-mode EMI in flyback and forward converters. This allows smaller Y-capacitors and simplified EMI filter design compared to standard rectifiers with >100ns trr, particularly at switching frequencies above 200kHz.
Can MURS140-13-F replace a standard FR107 in an existing design?
Yes - MURS140-13-F is a direct SMB-package replacement for FR107 (DO-41) in SMT layouts, offering faster recovery (50ns vs. 500ns), lower forward voltage (1.25V vs. 1.3V), and superior surge capability (35A vs. 30A). Layout redesign is required due to SMB footprint differences, but no circuit re-optimization is needed for typical 400V applications.
MURS140-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -55°C ~ 175°C
MURS140-13-F FAQ
1.How can I place an order for MURS140-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MURS140-13-F 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 MURS140-13-F reliable?
The price and inventory of MURS140-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MURS140-13-F is usually 5 days.
3.What payment methods are accepted for MURS140-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MURS140-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MURS140-13-F?
MURS140-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MURS140-13-F 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 MURS140-13-F?
For technical support, including MURS140-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MURS140-13-F requirements.
6.How does Aetrix verify that MURS140-13-F is sourced from the original manufacturer or authorized distributors?
All MURS140-13-F 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 MURS140-13-F meets industry standards.
7.What is the process for return or replacement of MURS140-13-F?
All MURS140-13-F units undergo pre-shipment inspection (PSI). If there is an issue with MURS140-13-F, 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 MURS140-13-F part is unused and in its original packaging.
Return procedure for MURS140-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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