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Taiwan Semiconductor Corporation S1MFSH
- Part No.:
- S1MFSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
S1MFSH.pdf
- Description:
- DIODE GEN PURP 1KV 1A SOD128
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
S1MFSH from Taiwan Semiconductor is a 1000V, 1A standard surface-mount silicon rectifier diode in SOD-128 package, featuring glass-passivated junction, AEC-Q101 qualification, and 30A surge capability - used for freewheeling and snubber functions in automotive DC/DC converters.
For engineers reviewing the S1MFSH datasheet, S1MFSH pinout, S1MFSH application, or S1MFSH equivalent, key selection criteria include peak reverse voltage (1000V), forward voltage at 1A/25°C (≤1.10V), thermal resistance (RθJL = 29°C/W), and AEC-Q101 compliance for automotive-grade reliability.
Technical Context
This device is a single-die, unidirectional standard recovery rectifier optimized for high-voltage, medium-current switching applications. Its glass-passivated junction ensures stable reverse leakage (<1µA @ 25°C, <50µA @ 125°C) and robustness against moisture and mechanical stress.
The SOD-128 package enables high power density with low thermal resistance to lead (29°C/W) and supports automated placement per J-STD-020 Level 1 moisture sensitivity. Polarity is marked by cathode band; terminals are matte tin-plated for reliable solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - maximum repetitive reverse blocking voltage without breakdown |
| IF | 1 A - continuous average forward current rating at TA = 75°C on 5mm × 5mm Cu pad |
| IFSM | 30 A - non-repetitive surge current (8.3 ms half-sine) for transient energy handling |
| VF @ 1A, 25°C | ≤1.10 V - forward conduction loss impacting efficiency and thermal design |
| RθJL | 29 °C/W - junction-to-lead thermal resistance enabling direct PCB heat path management |
| TJ max | +150 °C - maximum operating junction temperature supporting under-hood automotive use |
| CJ | 9 pF @ 4V - junction capacitance affecting high-frequency switching noise and EMI behavior |
Pinout & Package
Package: SOD-128 - surface-mount, flat-lead plastic case per JEDEC DO-221AD, with cathode indicated by band, matte tin-plated leads, UL 94V-0 molding compound, and 0.027g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load or switch node; requires thermal relief on PCB |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to higher-potential rail; critical for polarity-sensitive snubber/freewheeling paths |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.) |
| Glass-passivated junction | Enhanced environmental stability and long-term reliability under humidity and thermal cycling |
| J-STD-020 Level 1 moisture sensitivity | Zero bake requirement before reflow; compatible with standard SMT assembly lines |
| RoHS and halogen-free | Compliant with EU environmental directives and IPC-1752 material declaration standards |
| Low RθJL (29°C/W) | Enables efficient heat transfer to PCB copper, reducing need for external heatsinking |
Applications
| Automotive DC/DC Converters | Snubber Circuits |
|---|---|
Use Scenario: High-efficiency 12V–48V bidirectional DC/DC conversion in mild-hybrid vehicle architectures. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck/boost stages, clamping inductive kickback during MOSFET turn-off. Use Value: 1000V VRRM provides margin against transients; 30A IFSM handles load dump surges without failure. | Use Scenario: RC snubber across IGBTs or MOSFETs in motor drive inverters to suppress voltage spikes. IC Role / Device Role / Timing Role: Voltage-clamping element absorbing stored inductive energy during switching transitions. Use Value: Low CJ (9 pF) minimizes capacitive loading on gate drivers while maintaining fast recovery for spike suppression. |
| Freewheeling Diodes | Industrial Power Supplies |
Use Scenario: Inductive load commutation in solenoid drivers, relay coils, and valve actuators. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when control switch opens. Use Value: ≤1.10V VF at 1A reduces conduction loss and self-heating in continuous-duty applications. | Use Scenario: Output rectification in isolated flyback or forward converters for industrial PLCs and HMIs. IC Role / Device Role / Timing Role: Main output rectifier delivering regulated DC output under variable load conditions. Use Value: AEC-Q101 qualification and +150°C TJ max ensure operation in high-ambient industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-1EWH01-M3/5AT | Same SOD-128 package, 1000V VRRM, but rated at 1.1A and higher VF (1.25V @ 1A) | Higher forward drop increases conduction loss; less suitable for thermally constrained layouts | Select S1MFSH where lower VF and tighter thermal resistance are prioritized |
| ON Semiconductor MUR110SFT1G | TO-277 package (not SOD-128), ultrafast recovery (trr = 75ns vs. standard ~2 µs), 1000V/1A | Ultrafast recovery reduces switching loss but increases cost and EMI risk in non-resonant topologies | Choose S1MFSH for cost-sensitive, standard-recovery applications where EMI and layout simplicity matter |
Compared with VS-1EWH01-M3/5AT and MUR110SFT1G, the S1MFSH delivers lower forward voltage and superior thermal performance in the same footprint, making it optimal for space-constrained automotive and industrial rectification where standard recovery suffices.
Availability
S1MFSH is available at Aetrix Electronics and suitable for automotive DC/DC converters, snubber circuits, and freewheeling diode applications requiring stable component supply, AEC-Q101 qualification, and SOD-128 surface-mount compatibility.
Supply support for S1MFSH 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 automotive, industrial, and consumer markets since 1979.
The S1MFSH belongs to TSC's S1xFSH family of AEC-Q101-qualified standard rectifiers designed specifically for high-reliability automotive power conversion and industrial snubbing where voltage margin, thermal performance, and assembly compatibility are critical.
FAQ
What is the peak repetitive reverse voltage rating of the S1MFSH?
The S1MFSH has a peak repetitive reverse voltage (VRRM) rating of 1000 V, verified per absolute maximum ratings table in Taiwan Semiconductor's B2306 datasheet. This value defines the maximum reverse-biased voltage the device can block repeatedly without avalanche breakdown, making S1MFSH suitable for high-transient automotive and industrial power rails.
Is the S1MFSH qualified for automotive applications?
Yes, the S1MFSH is AEC-Q101 qualified, as explicitly stated in the features section of its official datasheet. This qualification confirms that S1MFSH has passed stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - required for under-hood and safety-critical automotive systems.
What package does the S1MFSH use, and what are its key mechanical attributes?
The S1MFSH uses the SOD-128 surface-mount package per JEDEC DO-221AD. Key attributes include matte tin-plated leads (J-STD-002 compliant), UL 94V-0 flammability-rated molding compound, cathode band polarity marking, and a weight of approximately 0.027 g. Its thermal design supports 29°C/W junction-to-lead resistance on a 5 mm × 5 mm copper pad.
What is the forward voltage of the S1MFSH at 1A and 25°C?
The forward voltage (VF) of the S1MFSH is specified as ≤1.10 V at IF = 1 A and TJ = 25°C, per the electrical specifications table. This maximum value reflects worst-case conduction loss under nominal conditions and directly impacts thermal design and system efficiency in rectifier applications.
Does the S1MFSH have a defined junction capacitance, and why does it matter?
Yes, the S1MFSH has a typical junction capacitance (CJ) of 9 pF measured at 1 MHz and VR = 4.0 V. This parameter affects high-frequency switching behavior - particularly in snubber and freewheeling roles - where excessive capacitance can increase EMI or slow down voltage transitions across the diode.
S1MFSH 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1000 V
- Capacitance @ Vr, F:
- 9pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
S1MFSH FAQ
1.How can I place an order for S1MFSH through Aetrix?
Please submit a Request for Quotation (RFQ) for S1MFSH 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 S1MFSH reliable?
The price and inventory of S1MFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1MFSH is usually 5 days.
3.What payment methods are accepted for S1MFSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1MFSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1MFSH?
S1MFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1MFSH 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 S1MFSH?
For technical support, including S1MFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1MFSH requirements.
6.How does Aetrix verify that S1MFSH is sourced from the original manufacturer or authorized distributors?
All S1MFSH 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 S1MFSH meets industry standards.
7.What is the process for return or replacement of S1MFSH?
All S1MFSH units undergo pre-shipment inspection (PSI). If there is an issue with S1MFSH, 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 S1MFSH part is unused and in its original packaging.
Return procedure for S1MFSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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