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Taiwan Semiconductor Corporation S1M-K
- Part No.:
- S1M-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
S1M-K.pdf
- Description:
- 1A, 1000V, STANDARD RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:4,696
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Product details
Overview
S1M-K from Taiwan Semiconductor is a 1 A, 1000 V standard surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring glass-passivated junction, 1.1 V max forward voltage at 1 A, 30 A peak surge current, and 150 °C maximum junction temperature - used in DC-DC converters and switching-mode inverters.
For engineers reviewing the S1M-K datasheet, S1M-K pinout, S1M-K application, or S1M-K equivalent, key selection criteria include repetitive peak reverse voltage (1000 V), forward current rating (1 A), thermal resistance (RθJA = 85 °C/W), reverse recovery time (1500 ns), and moisture sensitivity level (J-STD-020 Level 1).
Technical Context
The S1M-K is a single-die, unidirectional standard recovery rectifier with cathode-band polarity marking. Its 1000 V VRRM and 30 A IFSM support high-voltage transient handling in off-line power supplies, while the 1500 ns trr reflects its non-fast-recovery behavior suited for lower-frequency (<100 kHz) switching applications.
Thermally, it uses a DO-214AC (SMA) package with matte tin-plated leads compliant to J-STD-002, delivering RθJL = 30 °C/W and RθJA = 85 °C/W - enabling 1 A continuous conduction at ambient up to ~75 °C without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports input rectification in universal AC mains (85–265 VAC) with ≥2× safety margin |
| IF | 1 A continuous - suitable for low-to-medium power DC-DC stages up to ~15 W at 12 V output |
| VF (max) | 1.1 V @ 1 A, 25 °C - contributes ≤1.1 W conduction loss at full load |
| IFSM | 30 A @ 8.3 ms half-sine - withstands cold-start inrush in capacitor-input filter designs |
| trr | 1500 ns - limits switching speed to ≤100 kHz operation; not suitable for high-frequency ZVS/ZCS topologies |
| TJ (max) | 150 °C - enables operation in sealed industrial enclosures with limited airflow |
| CJ | 12 pF @ 4 V - minimizes capacitive coupling noise in high-dv/dt gate-drive or feedback paths |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-diode configuration with cathode indicated by molded band. Matte tin-plated leads meet J-STD-002 solderability; UL 94V-0 molding compound; weight ≈ 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to AC input or transformer secondary during positive half-cycle |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to bulk capacitor or switching node; blocks 1000 V reverse potential |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable leakage performance across humidity and temperature cycling (IR ≤ 1 µA @ 25 °C, ≤50 µA @ 125 °C) |
| J-STD-020 Level 1 moisture sensitivity | Allows unlimited floor life before reflow; no baking required prior to assembly |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing |
| UL 94V-0 molding compound | Prevents flame propagation in overtemperature fault conditions in enclosed power modules |
Applications
| DC-DC Converter Input Rectification | Switching Mode Inverter Output Stage |
|---|---|
Use Scenario: AC/DC front-end rectification feeding isolated flyback or forward converter with 100–265 VAC input. IC Role / Device Role / Timing Role: Standard recovery rectifier providing unidirectional current path and reverse voltage blocking. Use Value: 1000 V VRRM ensures >2× derating margin against line surges; 30 A IFSM handles startup inrush into large bulk capacitors. | Use Scenario: Output freewheeling or anti-parallel diode in 48 V–400 V DC bus inverters for motor drives or UPS systems. IC Role / Device Role / Timing Role: Unidirectional conduction path during dead-time commutation and inductive energy recirculation. Use Value: 150 °C TJ(max) supports sustained operation under high ambient temperatures in fanless enclosures; glass passivation ensures long-term IR stability. |
| General-Purpose Power Supply Rectification | Industrial Control Power Input Stage |
Use Scenario: Low-cost linear or quasi-resonant SMPS in instrumentation, PLC I/O modules, or LED drivers. IC Role / Device Role / Timing Role: Main AC input rectifier converting 120/230 VAC to pulsating DC for downstream regulation. Use Value: DO-214AC (SMA) footprint enables automated placement; 1.1 V VF limits conduction loss without requiring heatsinking at ≤1 A. | Use Scenario: Mains-powered industrial controllers operating in harsh environments (−40 to +85 °C ambient). IC Role / Device Role / Timing Role: Primary-side rectifier in auxiliary 5/12/24 V bias supply, exposed to voltage transients per IEC 61000-4-5. Use Value: 1000 V VRRM and 30 A IFSM provide robustness against 2 kV ring-wave surges; JESD201 Class 1A whisker resistance prevents field failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 (STMicroelectronics) | Same 1 A / 600 V rating; faster trr = 75 ns; higher VF = 1.3 V typ | Optimized for higher-frequency PFC and boost converters; not rated for 1000 V systems | Select only if system VR ≤ 600 V and trr < 100 ns is required |
| ES1J (ON Semiconductor) | 1 A / 600 V; trr = 35 ns; VF = 1.7 V max; same DO-214AC package | Designed for fast-switching SMPS; higher VF increases conduction loss vs. S1M-K | Choose when ultra-fast recovery is mandatory and voltage stress remains ≤600 V |
Compared with STTH1R06 and ES1J, the S1M-K trades speed for higher voltage capability and lower forward drop - making it uniquely suitable for cost-sensitive, high-VR, low-frequency rectification where trr >1 µs is acceptable.
Availability
S1M-K is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and industrial control power input stages requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for S1M-K 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 for industrial and consumer applications.
The S1D-K to S1M-K series was designed specifically for cost-effective, high-reliability AC input and DC bus rectification in off-line power supplies - emphasizing ruggedness, manufacturability, and compliance with global environmental standards.
FAQ
What is the maximum repetitive peak reverse voltage of the S1M-K?
The S1M-K has a maximum repetitive peak reverse voltage (VRRM) of 1000 V. This rating is confirmed in the Absolute Maximum Ratings table of Taiwan Semiconductor's E2102 datasheet and defines the highest reverse voltage the device can block repeatedly without breakdown. The S1M-K is the highest-voltage variant in the S1x-K family, with "M" explicitly denoting 1000 V. Designers must ensure system-level transient voltages remain within this limit, including safety margins for line surges.
Is the S1M-K suitable for high-frequency switching applications like PFC or resonant converters?
No, the S1M-K is not suitable for high-frequency switching applications. Its reverse recovery time (trr) is 1500 ns - characteristic of a standard recovery rectifier - limiting practical use to frequencies below 100 kHz. For PFC or LLC resonant converters requiring trr < 100 ns, fast or ultrafast alternatives such as ES1J or STTH1R06 should be considered. The S1M-K is optimized for cost-sensitive, lower-frequency rectification where voltage rating and surge robustness outweigh speed requirements.
What package type does the S1M-K use, and is it compatible with automated PCB assembly?
The S1M-K uses the DO-214AC (SMA) surface-mount package, with matte tin-plated leads certified solderable per J-STD-002. It is explicitly designed for automated placement, as noted in the FEATURES section of the E2102 datasheet. The package meets J-STD-020 Moisture Sensitivity Level 1, meaning it can be stored indefinitely before reflow without baking - simplifying SMT line logistics. Its standardized footprint aligns with IPC-7351B recommendations for SMA devices.
Does the S1M-K comply with RoHS and halogen-free requirements?
Yes, the S1M-K is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements appear in the FEATURES section of the official E2102 datasheet. The device uses lead-free matte tin plating and halogen-free molding compound, satisfying both EU RoHS Directive 2011/65/EU and major OEM green material specifications. No exemptions apply; full substance declarations are available upon request from Taiwan Semiconductor.
What is the thermal resistance from junction to ambient (RθJA) for the S1M-K?
The S1M-K has a junction-to-ambient thermal resistance (RθJA) of 85 °C/W, measured under standard JEDEC test conditions (single device on 1-inch² FR-4 board with 2 oz copper). This value is specified in the THERMAL PERFORMANCE section of the E2102 datasheet. It indicates that at 1 A DC forward current with typical VF ≈ 1.05 V, the junction will rise ~90 °C above ambient - confirming suitability for natural-convection cooling in compact industrial power supplies.
S1M-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- 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):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1000 V
- Capacitance @ Vr, F:
- 12pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 175°C
S1M-K FAQ
1.How can I place an order for S1M-K through Aetrix?
Please submit a Request for Quotation (RFQ) for S1M-K 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 S1M-K reliable?
The price and inventory of S1M-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1M-K is usually 5 days.
3.What payment methods are accepted for S1M-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1M-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1M-K?
S1M-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1M-K 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 S1M-K?
For technical support, including S1M-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1M-K requirements.
6.How does Aetrix verify that S1M-K is sourced from the original manufacturer or authorized distributors?
All S1M-K 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 S1M-K meets industry standards.
7.What is the process for return or replacement of S1M-K?
All S1M-K units undergo pre-shipment inspection (PSI). If there is an issue with S1M-K, 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 S1M-K part is unused and in its original packaging.
Return procedure for S1M-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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