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Taiwan Semiconductor Corporation RS1MF-T
- Part No.:
- RS1MF-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
RS1MF-T.pdf
- Description:
- 500NS, 1A, 1000V, FAST RECOVERY
- Quantity:
- Payment:
- Shipping:
Inventory:7,470
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Product details
Overview
RS1MF-T from Taiwan Semiconductor is a 1A, 1000V fast recovery surface-mount rectifier in SMAF package, featuring 500ns reverse recovery time, 1.06V typical forward voltage at 1.0A/25°C, and 15°C/W junction-to-lead thermal resistance - used in high-voltage DC-DC converters and switching inverters.
For engineers reviewing the RS1MF-T datasheet, RS1MF-T pinout, RS1MF-T application, or RS1MF-T equivalent, key selection factors include peak reverse voltage rating (1000V), thermal performance on PCB (RθJA = 89°C/W), fast recovery behavior (trr ≤ 500ns), and moisture sensitivity level (J-STD-020 Level 1).
Technical Context
The RS1MF-T employs a single-die, glass-passivated PN junction optimized for fast recovery in high-frequency switching power supplies. Its 1000V VRRM and 30A IFSM (8.3ms) support robust surge handling in industrial SMPS designs.
Thermal design relies on low RθJL (15°C/W) and defined mounting on 5mm × 5mm Cu pads. Reverse leakage remains ≤5µA at 25°C and ≤200µA at 125°C under rated VR, enabling stable operation across extended temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - maximum repetitive reverse voltage before breakdown; defines usable input voltage range in high-side rectification |
| IF | 1 A - continuous average forward current; determines steady-state power dissipation capability |
| trr | ≤500 ns - reverse recovery time; limits switching losses and EMI in ≥100kHz converters |
| VF @ 1A/25°C | 1.06 V typ - forward voltage drop; directly impacts conduction loss and thermal load at full load |
| RθJA | 89 °C/W - junction-to-ambient thermal resistance on standard PCB; sets minimum copper area requirement for 150°C TJ |
| IR @ 125°C | ≤200 µA - reverse leakage at max operating temperature; critical for standby power and high-impedance bias networks |
| CJ | 8 pF @ 1MHz/4V - junction capacitance; influences high-frequency noise coupling and snubber design |
Pinout & Package
Package: SMAF - surface-mount, molded plastic case with matte tin-plated leads, polarity indicated by cathode band, UL 94V-0 rated, JESD201 Class 1 whisker compliant, weight ≈0.035g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of AC source or transformer secondary; must handle full IF and IFSM |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail; withstands full VRRM; cathode band marks this terminal for orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance without hermetic sealing |
| Moisture sensitivity level 1 | Enables direct placement without baking; reduces manufacturing overhead and floor-life constraints |
| Low reverse leakage (≤200 µA @ 125°C) | Minimizes standby power loss and improves efficiency in always-on power stages |
| Fast recovery (trr ≤ 500 ns) | Reduces switching node ringing and allows higher-frequency operation than standard rectifiers |
| SMAF package with J-STD-002 solderability | Ensures consistent reflow yield and mechanical stability in automated SMT lines |
Applications
| High-Voltage DC-DC Converter | Switching Inverter Output Stage |
|---|---|
Use Scenario: Secondary-side rectification in isolated 400–800V bus DC-DC converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Fast-recovery power rectifier converting high-frequency transformer output to regulated DC. Use Value: 1000V VRRM provides margin against voltage spikes; 500ns trr minimizes switching loss at 200–500kHz operation. | Use Scenario: Output freewheeling and commutation path in three-phase motor drive inverters. IC Role / Device Role / Timing Role: Unidirectional current path during inductive flyback; blocks reverse voltage during PWM dead-time. Use Value: 30A IFSM handles motor startup surges; 15°C/W RθJL enables efficient heat transfer to heatsink via PCB copper. |
| Industrial SMPS Input Rectification | Renewable Energy Grid Interface |
Use Scenario: Bridge rectifier leg in universal-input (90–264VAC) offline SMPS with PFC front-end. IC Role / Device Role / Timing Role: High-voltage, medium-current rectifier in boost-derived topologies requiring fast turn-off. Use Value: 1.06V VF at 1A lowers conduction loss vs. slower alternatives; RoHS/halogen-free compliance meets industrial environmental mandates. | Use Scenario: Isolation barrier rectification in solar microinverters interfacing 600–1000V PV strings to grid-tied inverters. IC Role / Device Role / Timing Role: High-reliability, high-VRRM rectifier in transformerless topologies demanding low leakage and stable thermal behavior. Use Value: ≤200µA IR at 125°C ensures minimal no-load loss; UL 94V-0 molding compound supports safety-critical insulation requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06S | Same 1A/600V rating but lower VRRM; trr = 75ns (faster); RθJA = 70°C/W | Not suitable for 1000V systems; better for <600V, ultra-fast designs where lower trr dominates | Select when system VRRM margin ≤600V and trr <100ns is required |
| ON Semi MUR1100 | 1A/1000V; trr = 500ns (same); VF = 1.7V max @1A (higher); RθJA = 100°C/W (worse) | Higher conduction loss and thermal resistance; requires larger copper area for same TJ | Acceptable if cost-sensitive and layout allows extra thermal relief |
Compared with STTH1R06S and MUR1100, the RS1MF-T uniquely balances 1000V rating, 500ns recovery, and 1.06V VF - making it optimal for compact, high-efficiency 1000V rectification where thermal and voltage margins are both critical.
Availability
RS1MF-T is available at Aetrix Electronics and suitable for high-voltage DC-DC converters, switching mode inverters, and industrial SMPS requiring stable component supply and J-STD-020 Level 1 moisture handling.
Supply support for RS1MF-T 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 global industrial, computing, and consumer markets since 1979.
The RS1MF-T belongs to TSC's RS1x-F fast recovery rectifier family, designed specifically for high-efficiency, high-voltage switching power supplies where low forward voltage, controlled recovery, and robust thermal performance are essential.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for RS1MF-T?
The RS1MF-T has a maximum repetitive peak reverse voltage (VRRM) of 1000 V, as confirmed in the Absolute Maximum Ratings table. This rating defines the highest reverse voltage the device can block repeatedly without breakdown, making RS1MF-T suitable for applications such as 800V DC bus rectification and high-voltage solar string interfaces where transient overvoltage margin is critical.
Does RS1MF-T have a specified reverse recovery time (trr)?
Yes, RS1MF-T has a reverse recovery time (trr) of ≤500 ns under test conditions of IF = 0.5A, IR = 1.0A, and Irr = 0.25A. This value is explicitly listed in the Electrical Specifications table for RS1KF-T and RS1MF-T variants. The 500 ns trr enables efficient operation in switching power supplies running up to 500 kHz while limiting diode-induced switching losses.
What package type does RS1MF-T use, and what are its key mechanical features?
RS1MF-T uses the SMAF surface-mount package. Key mechanical features include matte tin-plated leads compliant with J-STD-002, UL 94V-0 flammability-rated molding compound, polarity indicated by a cathode band, and JESD201 Class 1 whisker resistance. Its approximate weight is 0.035 g, and it is qualified for automated placement per J-STD-020 Level 1 moisture sensitivity.
What is the forward voltage (VF) of RS1MF-T at 1.0A and 25°C?
The typical forward voltage (VF) of RS1MF-T is 1.06 V at IF = 1.0A and TJ = 25°C, with a maximum of 1.30 V under the same conditions. This value is measured using pulse testing (PW = 0.3 ms) and directly impacts conduction loss and thermal design - a lower VF like RS1MF-T's helps improve efficiency compared to alternatives with higher forward drops.
Is RS1MF-T RoHS and halogen-free compliant?
Yes, RS1MF-T is RoHS compliant and halogen-free in accordance with IEC 61249-2-21. These compliance statements appear in the FEATURES section of the official Taiwan Semiconductor datasheet (Version B2103). This makes RS1MF-T suitable for environmentally regulated industrial, computing, and consumer applications requiring restricted substance adherence.
RS1MF-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 8pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMAF
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1MF-T FAQ
1.How can I place an order for RS1MF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1MF-T 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 RS1MF-T reliable?
The price and inventory of RS1MF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1MF-T is usually 5 days.
3.What payment methods are accepted for RS1MF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1MF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1MF-T?
RS1MF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1MF-T 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 RS1MF-T?
For technical support, including RS1MF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1MF-T requirements.
6.How does Aetrix verify that RS1MF-T is sourced from the original manufacturer or authorized distributors?
All RS1MF-T 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 RS1MF-T meets industry standards.
7.What is the process for return or replacement of RS1MF-T?
All RS1MF-T units undergo pre-shipment inspection (PSI). If there is an issue with RS1MF-T, 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 RS1MF-T part is unused and in its original packaging.
Return procedure for RS1MF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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