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Taiwan Semiconductor Corporation MUR120S
- Part No.:
- MUR120S
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
MUR120S.pdf
- Description:
- DIODE GEN PURP 200V 1A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,280
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Product details
Overview
MUR120S from Taiwan Semiconductor is a 1 A, 200 V ultra-fast recovery surface-mount rectifier diode in DO-214AA (SMB) package, featuring 25 ns reverse recovery time, 0.875 V forward voltage at 1 A and 25°C, and 50 µA reverse leakage at 150°C - deployed in high-frequency switching power supplies for low-loss AC/DC conversion.
For engineers reviewing the MUR120S datasheet, MUR120S pinout, MUR120S application, or MUR120S equivalent, key selection criteria include repetitive peak reverse voltage (200 V), ultra-fast trr (25 ns), thermal resistance (17 °C/W), junction temperature rating (−55 to +175 °C), and DO-214AA mechanical compatibility with automated SMT assembly.
Technical Context
The MUR120S operates as a single-die, unidirectional silicon rectifier optimized for high-frequency switching circuits. Its ultra-fast recovery (trr = 25 ns) minimizes switching losses during turn-off, while its glass-passivated junction ensures stable performance under thermal cycling and humidity stress.
Designed for operation up to 175°C junction temperature, it sustains 1 A average forward current with derating above 75°C lead temperature. The device exhibits low forward voltage (0.875 V @ 1 A, 25°C) and tight reverse leakage control (2 µA @ 25°C, 200 V), supporting efficiency-critical SMPS topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling paths |
| IF(AV) | 1 A - continuous average forward current; sets baseline conduction capability at TA = 25°C |
| trr | 25 ns - ultra-fast reverse recovery time; enables >100 kHz switching without excessive diode loss or EMI |
| VF | 0.875 V @ 1 A, 25°C - low forward drop reduces I²R conduction loss and improves system efficiency |
| IR | 2 µA @ 200 V, 25°C - minimal leakage preserves hold-up energy and prevents standby power waste |
| RθJL | 17 °C/W - junction-to-lead thermal resistance; supports direct PCB copper pour heatsinking in SMB footprint |
| TJ max | +175 °C - high-temperature junction rating allows reliable operation in compact, thermally constrained enclosures |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band. Matte tin-plated leads, J-STD-002 solderable, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry terminal | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) |
| Cathode (K) | Forward current exit terminal | Connected to output rail or filter capacitor positive; polarity marked by cathode band on package |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability under thermal cycling and humid environments per JESD22-A101 |
| Ultra-fast 25 ns recovery | Reduces switching loss and ringing in high-frequency converters (>100 kHz), improving power density |
| DO-214AA (SMB) package | Standardized SMT footprint compatible with automated pick-and-place; supports 3,000 pcs/reel tape-and-reel delivery |
| Low VF (0.875 V @ 1 A) | Lowers conduction loss by ~15% vs. standard fast rectifiers, directly increasing 12 V/24 V SMPS efficiency |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated end equipment |
Applications
| SMPS Secondary Rectification | LED Driver Output Stage |
|---|---|
Use Scenario: High-efficiency 65–150 kHz flyback converter delivering 12–48 V DC output. IC Role / Device Role / Timing Role: Unidirectional freewheeling rectifier conducting during transformer reset phase. Use Value: 25 ns trr and 0.875 V VF minimize switching loss and heat rise, enabling smaller heatsinks and higher power density. | Use Scenario: Constant-current LED driver powering streetlight or industrial luminaires with 36–72 V output. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency AC from resonant tank to stable DC bus. Use Value: Low IR (2 µA @ 25°C) prevents output voltage droop during dimming cycles; 175°C TJ rating supports sealed outdoor enclosure operation. |
| AC-DC Adapter Front-End | DC-DC Converter Isolation Bridge |
Use Scenario: Universal-input (90–264 VAC) adapter for consumer electronics with <15 W output. IC Role / Device Role / Timing Role: Input bridge leg rectifier in voltage-doubler or full-wave configuration. Use Value: 200 V VRRM provides 2× safety margin over 115 VAC peak (162 V); DO-214AA footprint simplifies layout and rework. | Use Scenario: Isolated half-bridge DC-DC module converting 48 V input to 5 V/3.3 V for telecom baseband cards. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in secondary-side synchronous rectification circuit. Use Value: Ultra-fast trr avoids shoot-through risk when paired with gate drivers; 17 °C/W RθJL enables direct copper thermal pad attachment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06F | Same 1 A / 600 V rating but trr = 35 ns; VF = 0.95 V @ 1 A; TO-220AC package | Requires through-hole mounting and heatsink; unsuitable for space-constrained SMT designs | Select only if higher VRRM (600 V) and legacy through-hole assembly are required |
| ON Semi MUR120E | Identical 1 A / 200 V / 25 ns specs; same DO-214AA package; VF = 0.85 V @ 1 A, 25°C | No functional or mechanical deviation; qualified per AEC-Q101 for automotive-grade use | Preferred where automotive qualification or marginally lower VF is critical |
Compared with STTH1L06F and MUR120E, the MUR120S offers optimal balance of ultra-fast recovery, SMT compatibility, and cost-effective industrial qualification - making it ideal for high-volume consumer and industrial SMPS where DO-214AA footprint and 200 V blocking are primary constraints.
Availability
MUR120S is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and AC-DC adapters requiring stable component supply, consistent parametric performance, and full traceability across production lots.
Supply support for MUR120S 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 MUR1xxS series targets high-frequency power conversion systems, delivering ultra-fast recovery and low VF in standardized SMT packages to replace legacy slow and standard fast rectifiers in next-generation compact power supplies.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for MUR120S?
The MUR120S has a VRRM of 200 V, meaning it can safely block up to 200 V of reverse voltage repeatedly without breakdown. This rating is confirmed in the Absolute Maximum Ratings table and applies under standard test conditions (TA = 25°C). Exceeding this voltage risks avalanche failure, especially at elevated temperatures or with voltage transients.
Does MUR120S support automated SMT placement?
Yes, the MUR120S uses the DO-214AA (SMB) package with matte tin-plated leads compliant with J-STD-002 solderability standards. Its standardized footprint, moisture sensitivity level 1 rating, and glass-passivated die make it fully compatible with high-speed pick-and-place machines and reflow profiles used in volume manufacturing.
What is the forward voltage drop of MUR120S at 1 A and 150°C junction temperature?
The MUR120S exhibits a typical forward voltage of 0.710 V at 1 A and TJ = 150°C, as specified in the Electrical Specifications table. This reduced VF at high temperature reflects improved carrier injection efficiency and contributes to stable conduction loss in thermally demanding applications like enclosed LED drivers.
Is MUR120S RoHS and halogen-free compliant?
Yes, the MUR120S is RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. These compliance statements are explicitly declared in the Features section of the official Taiwan Semiconductor datasheet (Version L2102), and verified via material declarations from TSC's quality documentation.
What is the reverse recovery time (trr) specification for MUR120S?
The MUR120S has a maximum reverse recovery time of 25 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultra-fast trr is validated across the MUR105S–MUR120S subgroup and enables efficient operation in high-frequency SMPS designs without significant switching loss or EMI generation.
MUR120S 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 875 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 50 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 175°C
MUR120S FAQ
1.How can I place an order for MUR120S through Aetrix?
Please submit a Request for Quotation (RFQ) for MUR120S 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 MUR120S reliable?
The price and inventory of MUR120S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MUR120S is usually 5 days.
3.What payment methods are accepted for MUR120S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MUR120S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MUR120S?
MUR120S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MUR120S 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 MUR120S?
For technical support, including MUR120S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MUR120S requirements.
6.How does Aetrix verify that MUR120S is sourced from the original manufacturer or authorized distributors?
All MUR120S 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 MUR120S meets industry standards.
7.What is the process for return or replacement of MUR120S?
All MUR120S units undergo pre-shipment inspection (PSI). If there is an issue with MUR120S, 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 MUR120S part is unused and in its original packaging.
Return procedure for MUR120S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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