Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Taiwan Semiconductor Corporation S1GFSH

Name: S1GFSH
Brand: Taiwan Semiconductor Corporation
SKU: S1GFSH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: S1GFSH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-128

Datasheet:: S1GFSH.pdf

Description:: DIODE GEN PURP 400V 1A SOD128

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:28,000

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

S1GFSH from Taiwan Semiconductor is a 1 A, 400 V glass-passivated standard surface-mount rectifier diode in SOD-128 package, featuring AEC-Q101 qualification, 30 A surge rating, and 150 °C max junction temperature-used in automotive freewheeling and DC/DC converter snubber circuits.

For engineers reviewing the S1GFSH datasheet, S1GFSH pinout, S1GFSH application, or S1GFSH equivalent, key selection criteria include repetitive peak reverse voltage (400 V), forward voltage at 1 A (≤1.10 V @ 25 °C), thermal resistance (R_θJL = 29 °C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance.

Technical Context

The S1GFSH is a single-die, unidirectional silicon rectifier optimized for high-reliability surface-mount operation. Its glass-passivated junction ensures stable reverse leakage (<1 µA @ 25 °C, <50 µA @ 125 °C) and robust surge tolerance (30 A I_FSM, 8.3 ms half-sine).

Thermally, it delivers R_θJL = 29 °C/W and R_θJA = 82 °C/W when mounted on a 5 mm × 5 mm Cu pad PCB-enabling reliable 1 A continuous conduction in automotive under-hood environments up to 150 °C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - maximum repetitive reverse blocking voltage; defines safe operating limit in snubber/freewheeling clamping
I_F	1 A - average forward current rating; supports continuous conduction in 12–48 V DC/DC output stages
I_FSM	30 A - non-repetitive surge current; withstands inductive kickback in automotive solenoid drivers
V_F @ 1 A, 25 °C	≤1.10 V - forward drop determines conduction loss (1.1 W max at full load)
T_J max	+150 °C - enables operation in engine compartment or powertrain control units without derating
R_θJL	29 °C/W - low junction-to-lead thermal resistance supports direct PCB copper pad heat sinking
C_J	9 pF @ 4 V - low junction capacitance minimizes switching noise in high-frequency snubbers

Pinout & Package

Package: SOD-128 - molded plastic case per JEDEC DO-221AD, with matte tin-plated leads, cathode band polarity marking, and UL 94V-0 flammability rating.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to lower-potential side of inductive load or switch node in freewheeling path
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to higher-potential rail or snubber capacitor return in clamp circuits

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing
Glass-passivated junction	Eliminates need for conformal coating in humid under-hood environments
MSL Level 1	Zero floor life limitation-supports unlimited exposure to ambient conditions before reflow
Halogen-free & RoHS compliant	Meets EU ELV and automotive OEM material declaration requirements
Junction capacitance = 9 pF	Reduces high-frequency displacement current in >100 kHz snubber networks

Applications

Automotive Freewheeling Diode	DC/DC Converter Snubber
Use Scenario: Suppresses back-EMF during turn-off of 12 V solenoid valves or fuel injectors in engine control modules. IC Role / Device Role / Timing Role: Unidirectional freewheeling path for inductive energy dissipation. Use Value: Prevents MOSFET drain overvoltage spikes up to 400 V with <1 µA leakage at 25 °C.	Use Scenario: Absorbs switching transients across primary-side MOSFETs in isolated flyback converters for ADAS camera modules. IC Role / Device Role / Timing Role: Clamp diode in RC snubber network tied to transformer primary winding. Use Value: Low 9 pF capacitance avoids resonance distortion while sustaining 30 A surge pulses.
Industrial Power Supply Output Rectification	On-Board Charger (OBC) Auxiliary Rail
Use Scenario: Secondary-side rectification in 24 V industrial SMPS delivering ≤1 A to PLC I/O modules. IC Role / Device Role / Timing Role: Standard output rectifier replacing Schottky where higher V_RRM and lower cost are prioritized. Use Value: 1.10 V V_F yields ~1.1 W conduction loss at full load-acceptable for thermally managed enclosures.	Use Scenario: Auxiliary 12 V supply rectification in EV on-board chargers powering gate drivers and MCU rails. IC Role / Device Role / Timing Role: Input-stage rectifier feeding linear regulator or buck converter for control logic. Use Value: AEC-Q101 qualification and 150 °C T_J ensure uninterrupted operation during OBC thermal stress events.

Automotive Freewheeling Diode

DC/DC Converter Snubber

Use Scenario: Suppresses back-EMF during turn-off of 12 V solenoid valves or fuel injectors in engine control modules.

IC Role / Device Role / Timing Role: Unidirectional freewheeling path for inductive energy dissipation.

Use Value: Prevents MOSFET drain overvoltage spikes up to 400 V with <1 µA leakage at 25 °C.

Use Scenario: Absorbs switching transients across primary-side MOSFETs in isolated flyback converters for ADAS camera modules.

IC Role / Device Role / Timing Role: Clamp diode in RC snubber network tied to transformer primary winding.

Use Value: Low 9 pF capacitance avoids resonance distortion while sustaining 30 A surge pulses.

Industrial Power Supply Output Rectification

On-Board Charger (OBC) Auxiliary Rail

Use Scenario: Secondary-side rectification in 24 V industrial SMPS delivering ≤1 A to PLC I/O modules.

IC Role / Device Role / Timing Role: Standard output rectifier replacing Schottky where higher V_RRM and lower cost are prioritized.

Use Value: 1.10 V V_F yields ~1.1 W conduction loss at full load-acceptable for thermally managed enclosures.

Use Scenario: Auxiliary 12 V supply rectification in EV on-board chargers powering gate drivers and MCU rails.

IC Role / Device Role / Timing Role: Input-stage rectifier feeding linear regulator or buck converter for control logic.

Use Value: AEC-Q101 qualification and 150 °C T_J ensure uninterrupted operation during OBC thermal stress events.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R04S	V_RRM = 400 V, I_F = 1 A, but VF = 1.15 V @ 1 A (higher conduction loss); TO-277 package	Same voltage/current class but larger footprint and no AEC-Q101 qualification	Select if board space allows TO-277 and automotive qualification is not required
ES1J	V_RRM = 600 V, I_F = 1 A, VF = 1.7 V @ 1 A; SOD-123 package; no AEC-Q101	Higher V_RRM margin but significantly higher forward drop and lower surge rating (I_FSM = 30 A same, but thermal performance inferior)	Select only if 600 V blocking is mandatory and thermal headroom permits higher V_F loss

Compared with STTH1R04S and ES1J, the S1GFSH provides AEC-Q101 validation, lower V_F (≤1.10 V), and superior thermal resistance (R_θJL = 29 °C/W) in the compact SOD-128 package-making it optimal for space-constrained, thermally demanding automotive rectification.

Availability

S1GFSH is available at Aetrix Electronics and suitable for automotive freewheeling, DC/DC converter snubbing, and industrial auxiliary power supply applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for S1GFSH 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 S1GFSH belongs to TSC's S1xFSH family of AEC-Q101-qualified surface-mount rectifiers-designed specifically for high-reliability automotive power conversion and inductive load management where thermal robustness and process consistency are critical.

FAQ

What is the maximum repetitive peak reverse voltage rating for S1GFSH?

The S1GFSH has a maximum repetitive peak reverse voltage (V_RRM) of 400 V. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2306) and defines the highest reverse voltage the device can block continuously without breakdown. It is strictly specific to S1GFSH-not extrapolated from adjacent variants like S1JFSH (600 V) or S1DFSH (200 V).

Is S1GFSH qualified for automotive applications?

Yes, the S1GFSH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge-validating its suitability for under-hood and powertrain control applications. The S1GFSH datasheet states this qualification directly in the FEATURES section.

What package type does S1GFSH use, and what are its key mechanical attributes?

The S1GFSH uses the SOD-128 package per JEDEC DO-221AD Variation AD. Key attributes include matte tin-plated leads (solderable per J-STD-002), cathode band polarity marking, UL 94V-0 flammability rating, and MSL Level 1 moisture sensitivity-confirmed in the MECHANICAL DATA and ORDERING INFORMATION sections of the Taiwan Semiconductor datasheet.

What is the forward voltage of S1GFSH at 1 A and 25 °C?

The forward voltage (V_F) of S1GFSH is guaranteed ≤1.10 V at I_F = 1 A and T_J = 25 °C, with a typical value of 0.99 V. This specification appears in the ELECTRICAL SPECIFICATIONS table under "MAX" column for the condition IF = 1.0 A, TJ = 25 °C-verified in Version B2306 of the official datasheet.

Does S1GFSH have halogen-free and RoHS-compliant construction?

Yes, the S1GFSH is both halogen-free and RoHS compliant, as stated in the FEATURES section of the Taiwan Semiconductor datasheet. These material declarations meet EU ELV requirements and are verified through standardized chemical analysis-ensuring compatibility with automotive OEM environmental compliance programs.

S1GFSH 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):: 400 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 @ 400 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

S1GFSH FAQ

1.How can I place an order for S1GFSH through Aetrix?

Please submit a Request for Quotation (RFQ) for S1GFSH 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 S1GFSH reliable?

The price and inventory of S1GFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1GFSH is usually 5 days.

3.What payment methods are accepted for S1GFSH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1GFSH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1GFSH?

S1GFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1GFSH 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 S1GFSH?

For technical support, including S1GFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1GFSH requirements.

6.How does Aetrix verify that S1GFSH is sourced from the original manufacturer or authorized distributors?

All S1GFSH 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 S1GFSH meets industry standards.

7.What is the process for return or replacement of S1GFSH?

All S1GFSH units undergo pre-shipment inspection (PSI). If there is an issue with S1GFSH, 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 S1GFSH part is unused and in its original packaging.

Return procedure for S1GFSH:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…