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Taiwan Semiconductor Corporation RS3MFSH
- Part No.:
- RS3MFSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
RS3MFSH.pdf
- Description:
- 160NS, 3A, 1000V, FAST RECOVERY
- Quantity:
- Payment:
- Shipping:
Inventory:13,876
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Product details
Overview
RS3MFSH from Taiwan Semiconductor is a 3A, 1000V fast recovery surface-mount rectifier in SOD-128 package, featuring AEC-Q101 qualification, 160 ns reverse recovery time, 1.30 V max forward voltage at 3A/25°C, and -55°C to +175°C junction temperature range; used in automotive DC/DC converters for freewheeling and snubber functions.
For engineers reviewing the RS3MFSH datasheet, RS3MFSH pinout, RS3MFSH application, or RS3MFSH equivalent, key selection criteria include repetitive peak reverse voltage (1000 V), surge current rating (80 A), thermal resistance (RθJL = 23 °C/W), moisture sensitivity level (MSL 1), and AEC-Q101 compliance for automotive-grade reliability validation.
Technical Context
The RS3MFSH employs a glass-passivated single-die silicon junction optimized for fast switching with trr ≤ 160 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. Its SOD-128 package supports high-power density mounting on PCBs with 5 mm × 5 mm copper pads.
Thermal performance is defined by RθJL = 23 °C/W and RθJA = 88 °C/W (on standard test board), enabling stable operation up to TJ = 175 °C. Reverse leakage remains ≤ 5 μA at 25°C and ≤ 250 μA at 150°C under rated VR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands repetitive reverse voltage up to 1000 V without breakdown, suitable for high-voltage DC bus protection. |
| IF | 3 A continuous - Rated average forward current defines steady-state power handling capability in freewheeling paths. |
| IFSM | 80 A - Peak non-repetitive surge current rating enables robustness against transient inductive kickback. |
| trr | ≤160 ns - Fast reverse recovery minimizes switching losses and EMI in high-frequency DC/DC topologies. |
| VF @ 3A/25°C | ≤1.30 V - Low forward voltage drop reduces conduction loss and improves system efficiency at full load. |
| RθJL | 23 °C/W - Low junction-to-lead thermal resistance supports direct heat transfer to PCB copper, easing thermal design. |
| Junction Temp Range | -55°C to +175°C - Extended operating range meets under-hood automotive requirements per AEC-Q101. |
Pinout & Package
SOD-128 surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance; weight ≈ 0.027 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); polarity must align with schematic symbol. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; ties to higher-potential rail (e.g., output capacitor positive) during conduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS power supplies, and body electronics. |
| Glass passivated junction | Enhances long-term reliability and humidity resistance versus epoxy-passivated alternatives. |
| MSL Level 1 | Zero floor-life limitation - can be mounted directly after unpacking without baking. |
| Halogen-free & RoHS compliant | Meets EU environmental directives and OEM sustainability requirements for vehicle production. |
| Junction capacitance (15 pF) | Low CJ minimizes capacitive coupling noise in high-dv/dt switching environments. |
Applications
| Automotive DC/DC Converters | Industrial Snubber Circuits |
|---|---|
Use Scenario: High-efficiency 12 V–48 V bidirectional DC/DC conversion in 48 V mild-hybrid systems. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous rectification stage, conducting during low-side switch off-time. Use Value: 160 ns trr and 1.30 V VF reduce switching loss and thermal stress, enabling compact heatsinkless designs. | Use Scenario: Voltage spike suppression across IGBTs in motor drives and UPS inverters. IC Role / Device Role / Timing Role: Fast-recovery snubber diode clamping inductive energy during turn-off transitions. Use Value: 1000 V VRRM and 80 A IFSM ensure reliable clamping of >600 V transients without avalanche failure. |
| On-Board Charger (OBC) Auxiliary Supplies | LED Driver Secondary Rectification |
Use Scenario: Isolated auxiliary bias supply for gate drivers and controllers in EV on-board chargers. IC Role / Device Role / Timing Role: Output rectifier in flyback or forward converter delivering 12–24 V at ~3 A. Use Value: -55°C to +175°C operating range supports placement near hot power stages without derating. | Use Scenario: Secondary-side rectification in constant-current LED drivers for commercial lighting. IC Role / Device Role / Timing Role: Main output rectifier converting transformer secondary AC to regulated DC for LED strings. Use Value: Low 5 μA reverse leakage at 25°C ensures minimal standby power loss in always-on lighting systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600 V VRRM, 3 A IF, 75 ns trr, TO-277 package | Limited to ≤600 V systems; faster recovery but lower voltage rating | Select when lower trr is prioritized over voltage margin in sub-600 V designs. |
| ES3J | 600 V VRRM, 3 A IF, 35 ns trr, DO-214AB package | Higher speed but halved voltage rating; not AEC-Q101 qualified | Prefer for cost-sensitive industrial SMPS where automotive qualification is unnecessary. |
Compared with STTH3L06S and ES3J, the RS3MFSH uniquely combines 1000 V rating, AEC-Q101 qualification, and MSL 1 handling-making it the only option among the three validated for under-hood automotive use above 600 V.
Availability
RS3MFSH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial snubber circuits, and on-board charger auxiliary supplies requiring stable component supply and long-term lifecycle assurance.
Supply support for RS3MFSH 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 automotive, industrial, and consumer markets since 1979.
The RS3MFSH belongs to TSC's AEC-Q101-qualified fast recovery rectifier product line, engineered specifically for high-reliability power conversion in harsh-environment automotive and industrial applications.
FAQ
What is the maximum junction temperature rating for RS3MFSH?
The RS3MFSH has a maximum junction temperature (TJ) of +175°C and a minimum of –55°C, supporting operation in under-hood automotive environments and high-temperature industrial enclosures. This rating is validated per AEC-Q101 stress testing and confirmed in the absolute maximum ratings table of the official RS3MFSH datasheet.
Is RS3MFSH suitable for automotive applications?
Yes, RS3MFSH is AEC-Q101 qualified and specified for automotive use, including engine control units, ADAS power supplies, and 48 V mild-hybrid DC/DC converters. Its glass-passivated junction, MSL Level 1 rating, and –55°C to +175°C operating range meet stringent automotive reliability requirements.
What does the marking code 'RS3MFS' on the RS3MFSH device indicate?
The marking code 'RS3MFS' on the RS3MFSH corresponds to its orderable part number prefix and identifies the device as a 3A, 1000V fast recovery rectifier in SOD-128 package. It appears on the cathode-band side of the molded body and is consistent across all RS3MFSH units per the manufacturer's marking diagram.
How does the thermal resistance of RS3MFSH impact PCB layout?
The RS3MFSH exhibits RθJL = 23 °C/W and RθJA = 88 °C/W on a 5 mm × 5 mm Cu pad, meaning effective thermal relief requires generous copper pour connected to both terminals. Layout should avoid narrow traces and prioritize thermal vias under the leads to maintain TJ ≤ 175°C under 3 A continuous load.
What is the reverse recovery time specification for RS3MFSH?
The RS3MFSH has a maximum reverse recovery time (trr) of 160 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is confirmed in the electrical specifications table and enables efficient operation in 100–500 kHz DC/DC converters where switching loss minimization is critical.
RS3MFSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 160 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS3MFSH FAQ
1.How can I place an order for RS3MFSH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3MFSH 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 RS3MFSH reliable?
The price and inventory of RS3MFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3MFSH is usually 5 days.
3.What payment methods are accepted for RS3MFSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3MFSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3MFSH?
RS3MFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3MFSH 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 RS3MFSH?
For technical support, including RS3MFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3MFSH requirements.
6.How does Aetrix verify that RS3MFSH is sourced from the original manufacturer or authorized distributors?
All RS3MFSH 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 RS3MFSH meets industry standards.
7.What is the process for return or replacement of RS3MFSH?
All RS3MFSH units undergo pre-shipment inspection (PSI). If there is an issue with RS3MFSH, 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 RS3MFSH part is unused and in its original packaging.
Return procedure for RS3MFSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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