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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation S1MFSHMWG

Name: S1MFSHMWG
Brand: Taiwan Semiconductor Corporation
SKU: S1MFSHMWG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S1MFSHMWG

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-128

Datasheet:: S1MFSHMWG.pdf

Description:: DIODE GEN PURP 1KV 1A SOD128

Quantity:: RFQ Add To RFQ list

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Inventory:19,242

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Product details

Overview

S1MFSHMWG from Taiwan Semiconductor is a 1 A, 1000 V standard surface-mount silicon rectifier diode in SOD-128 package, featuring glass-passivated junction, 30 A surge capability, and 1.1 V max forward voltage at 1 A/25°C - used in DC-DC converters and switching-mode inverters.

For engineers reviewing the S1MFSHMWG datasheet, S1MFSHMWG pinout, S1MFSHMWG application, or S1MFSHMWG equivalent, key selection criteria include peak reverse voltage (1000 V), thermal resistance (R_θJL = 29 °C/W), moisture sensitivity level (MSL 1), RoHS/halogen-free compliance, and SOD-128 mechanical footprint compatibility.

Technical Context

This single-die standard rectifier operates with a maximum junction temperature of 150 °C and supports repetitive reverse voltages up to 1000 V. Its glass-passivated junction ensures stable performance under thermal cycling and humidity exposure.

Electrical behavior is characterized by low forward voltage (0.99 V typ. @ 1 A/25°C), minimal reverse leakage (≤1 µA @ 25°C), and 9 pF junction capacitance at 4 V reverse bias - enabling efficient high-frequency switching in SMPS front-end and output stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - maximum repetitive reverse voltage; defines safe blocking capability in high-voltage DC bus applications
I_F	1 A continuous - rated average forward current; determines steady-state power handling on PCB copper pads
I_FSM	30 A - non-repetitive surge current (8.3 ms half-sine); supports inrush and fault transient tolerance
V_F (max)	1.1 V @ 1 A/25°C - forward voltage limit; directly impacts conduction loss and thermal design margin
R_θJL	29 °C/W - junction-to-lead thermal resistance; enables direct heat transfer to PCB copper for passive cooling
C_J	9 pF @ 1 MHz, 4 V - junction capacitance; affects high-frequency switching noise and EMI filter sizing
T_J max	150 °C - maximum operating junction temperature; sets thermal derating boundary for reliability

Pinout & Package

Package: SOD-128 - surface-mount, flat lead, single-anode/single-cathode configuration with cathode band marking; 5 mm × 5 mm copper pad recommended per thermal test board.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary or switch node return)
Cathode	Forward current exit point	Marked with band; connects to output rail or smoothing capacitor positive terminal

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term reliability under humid environments and thermal stress without hermetic sealing
MSL Level 1 rating	Enables unlimited floor life and reflow compatibility without dry-pack or baking requirements
RoHS & halogen-free	Meets IEC 61249-2-21 and EU RoHS directives for environmentally compliant industrial manufacturing
UL 94V-0 molding compound	Provides flame-retardant encapsulation essential for safety-certified power supplies
Matte tin-plated leads	Ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 2

Applications

DC-DC Converter Output Rectification	Switching Inverter DC Link Protection
Use Scenario: High-efficiency isolated flyback or forward converter output stage delivering regulated 12–48 V DC. IC Role / Device Role / Timing Role: Standard rectifier conducting unidirectional current during transformer demagnetization phase. Use Value: 1000 V V_RRM provides margin against reflected voltage spikes; 1.1 V V_F limits conduction loss at 1 A load.	Use Scenario: Bidirectional DC link protection in solar microinverters or UPS systems with 600–800 V bus. IC Role / Device Role / Timing Role: Freewheeling/clamp diode absorbing inductive kickback during IGBT/MOSFET turn-off. Use Value: 30 A I_FSM withstands short-duration overcurrent events; 150 °C T_J max supports operation near heatsink-limited zones.
Industrial AC-DC Adapter Input Bridge	EMI Filter Snubber Network
Use Scenario: Compact 24 V/1 A industrial adapter using voltage-doubler or full-wave rectification from 120/230 V AC. IC Role / Device Role / Timing Role: Single-phase rectifying element in discrete bridge or half-wave configuration. Use Value: SOD-128 footprint allows dense layout; MSL 1 simplifies automated assembly without moisture control overhead.	Use Scenario: RC snubber network across relay contacts or transformer windings to suppress voltage transients. IC Role / Device Role / Timing Role: Clamping diode limiting peak reverse voltage during energy dissipation. Use Value: 9 pF C_J minimizes capacitive loading on snubber timing; low IR (<1 µA) prevents leakage-induced offset drift.

DC-DC Converter Output Rectification

Switching Inverter DC Link Protection

Use Scenario: High-efficiency isolated flyback or forward converter output stage delivering regulated 12–48 V DC.

IC Role / Device Role / Timing Role: Standard rectifier conducting unidirectional current during transformer demagnetization phase.

Use Value: 1000 V V_RRM provides margin against reflected voltage spikes; 1.1 V V_F limits conduction loss at 1 A load.

Use Scenario: Bidirectional DC link protection in solar microinverters or UPS systems with 600–800 V bus.

IC Role / Device Role / Timing Role: Freewheeling/clamp diode absorbing inductive kickback during IGBT/MOSFET turn-off.

Use Value: 30 A I_FSM withstands short-duration overcurrent events; 150 °C T_J max supports operation near heatsink-limited zones.

Industrial AC-DC Adapter Input Bridge

EMI Filter Snubber Network

Use Scenario: Compact 24 V/1 A industrial adapter using voltage-doubler or full-wave rectification from 120/230 V AC.

IC Role / Device Role / Timing Role: Single-phase rectifying element in discrete bridge or half-wave configuration.

Use Value: SOD-128 footprint allows dense layout; MSL 1 simplifies automated assembly without moisture control overhead.

Use Scenario: RC snubber network across relay contacts or transformer windings to suppress voltage transients.

IC Role / Device Role / Timing Role: Clamping diode limiting peak reverse voltage during energy dissipation.

Use Value: 9 pF C_J minimizes capacitive loading on snubber timing; low IR (<1 µA) prevents leakage-induced offset drift.

Equivalent & Alternatives

The following parts are listed as comparable options for similar standard rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R06S	Same 1 A / 600 V rating; higher V_F (1.3 V max), lower I_FSM (25 A), TO-277 package	Limited to ≤600 V systems; requires different footprint and thermal pad layout	Select when 600 V blocking suffices and TO-277 mounting is preferred
ES1J-M3/84A	1 A / 600 V; faster recovery (t_rr = 35 ns), SOD-123 package, higher cost	Better for high-frequency SMPS (>100 kHz); not suitable for 1000 V designs	Choose only if fast recovery is required and voltage rating can be reduced

Compared with STTH1R06S and ES1J-M3/84A, the S1MFSHMWG uniquely delivers 1000 V blocking in SOD-128 with MSL 1 and halogen-free compliance - making it optimal for space-constrained, high-voltage industrial adapters where surge robustness and assembly simplicity are critical.

Availability

S1MFSHMWG is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial AC-DC adapters requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.

Supply support for S1MFSHMWG 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 industrial, computing, and consumer markets since 1979.

The S1DFS–S1MFS series targets cost-sensitive, high-reliability power conversion applications - designed for robustness in automated SMT lines and long-lifetime deployment in non-mission-critical power supplies.

FAQ

What is the maximum repetitive peak reverse voltage rating for S1MFSHMWG?

The S1MFSHMWG has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2103). It defines the highest reverse voltage the device can block continuously without breakdown, making S1MFSHMWG suitable for high-voltage DC bus and industrial rectifier applications where margin above 800 V is required.

Does S1MFSHMWG have a halogen-free and RoHS-compliant construction?

Yes, S1MFSHMWG meets both RoHS Directive 2011/65/EU and IEC 61249-2-21 halogen-free requirements. The datasheet explicitly states "Halogen-free according to IEC 61249-2-21" and "RoHS Compliant" under FEATURES. This ensures compliance for export to EU, China, and other regulated markets, and supports environmentally responsible manufacturing processes without compromising electrical or thermal performance.

What is the thermal resistance from junction to lead (R_θJL) for S1MFSHMWG?

The junction-to-lead thermal resistance (R_θJL) for S1MFSHMWG is 29 °C/W, measured with the device mounted on a 5 mm × 5 mm copper pad test board. This value is specified in the THERMAL PERFORMANCE section of the datasheet and is critical for estimating temperature rise under conduction loss - enabling accurate thermal design without forced airflow or external heatsinks in many 1 A applications.

Is S1MFSHMWG suitable for automated SMT assembly without moisture preconditioning?

Yes, S1MFSHMWG is rated Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it has unlimited floor life and does not require dry-packaging or baking prior to reflow soldering. This eliminates moisture-related popcorning risk and simplifies logistics and line-side handling - a verified feature listed in the FEATURES section of the Taiwan Semiconductor datasheet for the S1DFS–S1MFS family.

What is the forward voltage drop of S1MFSHMWG at 1 A and 25°C?

The forward voltage drop (V_F) of S1MFSHMWG is 0.99 V (typical) and 1.1 V (maximum) at I_F = 1 A and T_J = 25°C, as specified in the ELECTRICAL SPECIFICATIONS table. This value directly determines conduction loss (P_cond ≈ I_F × V_F) and influences thermal design - for example, at 1 A, worst-case loss is 1.1 W, requiring appropriate PCB copper area for thermal management.

S1MFSHMWG 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

S1MFSHMWG FAQ

1.How can I place an order for S1MFSHMWG through Aetrix?

Please submit a Request for Quotation (RFQ) for S1MFSHMWG 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 S1MFSHMWG reliable?

The price and inventory of S1MFSHMWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1MFSHMWG is usually 5 days.

3.What payment methods are accepted for S1MFSHMWG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1MFSHMWG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1MFSHMWG?

S1MFSHMWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1MFSHMWG 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 S1MFSHMWG?

For technical support, including S1MFSHMWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1MFSHMWG requirements.

6.How does Aetrix verify that S1MFSHMWG is sourced from the original manufacturer or authorized distributors?

All S1MFSHMWG 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 S1MFSHMWG meets industry standards.

7.What is the process for return or replacement of S1MFSHMWG?

All S1MFSHMWG units undergo pre-shipment inspection (PSI). If there is an issue with S1MFSHMWG, 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 S1MFSHMWG part is unused and in its original packaging.

Return procedure for S1MFSHMWG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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