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

Vishay General Semiconductor - Diodes Division S1FLG-GS18

Name: S1FLG-GS18
Brand: Vishay General Semiconductor - Diodes Division
SKU: S1FLG-GS18
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S1FLG-GS18

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: DO-219AB

Datasheet:: S1FLG-GS18.pdf

Description:: DIODE GP 400V 700MA DO219AB

Quantity:: RFQ Add To RFQ list

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Inventory:7,924

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Product details

Overview

S1FLG-GS18 from Vishay Semiconductors is a high-voltage standard recovery surface-mount rectifier diode in the eSMP® SMF (DO-219AB) package, rated for 400 V repetitive peak reverse voltage (V_RRM), 1.5 A average forward current at 75 °C case temperature, and 22 A non-repetitive surge current. It features glass passivation, wave/reeflow solderability, and is used in AC/DC input stages of power supplies, adapters, and industrial converters.

For engineers reviewing the S1FLG-GS18 datasheet, S1FLG-GS18 pinout, S1FLG-GS18 application, or S1FLG-GS18 equivalent, key selection criteria include its 400 V blocking capability, 1.1 V typical forward voltage at 1 A, 1800 ns reverse recovery time, low 4 pF junction capacitance, and compatibility with automated SMT placement on 8 mm tape reels (GS18: 10K/reel).

Technical Context

The S1FLG-GS18 operates as a single-element, unidirectional standard recovery rectifier with cathode band marking and DO-219AB mechanical outline. Its 1800 ns reverse recovery time and 10 µA max reverse leakage at 25 °C reflect standard recovery behavior-distinct from fast or ultrafast types-making it suitable for line-frequency rectification rather than high-frequency switching.

Thermally, it exhibits 180 K/W junction-to-ambient resistance when mounted on a 3 mm × 3 mm Cu pad (≥40 µm thick), limiting continuous operation to ≤75 °C case temperature for full 1.5 A rating. Its 15 mg mass and low-profile SMF package support compact, high-density PCB layouts in space-constrained power modules.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse voltage before breakdown; defines safe AC input voltage handling (e.g., 280 V RMS mains).
I_F(AV)	1.5 A at T_L = 75 °C - Continuous DC output current capability with heatsink or thermal pad; derates to 0.7 A at 65 °C ambient.
V_F	1.1 V typ. at 1 A - Forward conduction loss directly impacts efficiency and thermal rise in linear rectifier stages.
t_rr	1800 ns - Standard recovery speed; suitable for 50/60 Hz and up to ~10 kHz operation, not for >100 kHz SMPS.
C_j	4 pF at 4 V, 1 MHz - Low junction capacitance minimizes switching noise and EMI in low-frequency rectifier circuits.
I_R	10 µA max at 25 °C - Reverse leakage current affects standby power loss and high-impedance sensing accuracy.
R_thJA	180 K/W - Thermal resistance without dedicated heatsink; requires copper pad area for thermal management in production designs.

Pinout & Package

Package: SMF (DO-219AB), low-profile surface-mount case with cathode band marking; dimensions 3.5 mm × 1.9 mm × 0.85 mm (L × W × H); compatible with SOD-123W footprint.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Positive input terminal for forward conduction	Connected to AC source or transformer secondary; must withstand surge currents up to 22 A.
Cathode	Negative output terminal; marked by band	Delivers rectified DC output; polarity-sensitive placement required for correct circuit operation.

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and moisture resistance in humid or industrial environments.
260 °C / 10 s solder tolerance	Supports lead-free reflow profiles without junction degradation or delamination risk.
Wave and reflow solderable	Enables use in mixed-technology assemblies with both through-hole and SMT components.
eSMP® low-profile package	Reduces board height to ≤0.85 mm-critical for ultra-thin power adapters and IoT edge devices.

Applications

AC/DC Power Adapters	Industrial Motor Control Inputs
Use Scenario: Rectifying 115/230 VAC mains input in wall-wart and desktop power supplies. IC Role / Device Role / Timing Role: Primary-side standard recovery rectifier converting AC to pulsating DC before bulk capacitor filtering. Use Value: 400 V V_RRM provides 2× safety margin over 230 VAC peak (325 V), while 1.1 V V_F limits conduction loss at 1–1.5 A loads.	Use Scenario: Input rectification in variable frequency drive (VFD) front-end stages feeding DC bus capacitors. IC Role / Device Role / Timing Role: High-reliability line-frequency rectifier handling intermittent surges and harmonic-rich waveforms. Use Value: 22 A I_FSM withstands motor startup inrush; glass passivation ensures stability under vibration and thermal cycling.
LED Driver Power Supplies	Appliance Control Boards
Use Scenario: Off-line rectification in constant-current LED drivers for commercial lighting fixtures. IC Role / Device Role / Timing Role: Bridge or single-diode rectifier in flyback or buck-derived topologies operating at 50/60 Hz input. Use Value: 4 pF C_j reduces EMI coupling into sensitive current-sense paths; low 15 mg mass aids mechanical shock resistance.	Use Scenario: Auxiliary power supply rectification in washing machines, HVAC controllers, and smart home hubs. IC Role / Device Role / Timing Role: Compact, automated-placement rectifier for isolated 5–12 V auxiliary rails. Use Value: SOD-123W footprint compatibility allows drop-in replacement in legacy designs; GS18 reel packaging supports high-volume SMT lines.

AC/DC Power Adapters

Industrial Motor Control Inputs

Use Scenario: Rectifying 115/230 VAC mains input in wall-wart and desktop power supplies.

IC Role / Device Role / Timing Role: Primary-side standard recovery rectifier converting AC to pulsating DC before bulk capacitor filtering.

Use Value: 400 V V_RRM provides 2× safety margin over 230 VAC peak (325 V), while 1.1 V V_F limits conduction loss at 1–1.5 A loads.

Use Scenario: Input rectification in variable frequency drive (VFD) front-end stages feeding DC bus capacitors.

IC Role / Device Role / Timing Role: High-reliability line-frequency rectifier handling intermittent surges and harmonic-rich waveforms.

Use Value: 22 A I_FSM withstands motor startup inrush; glass passivation ensures stability under vibration and thermal cycling.

LED Driver Power Supplies

Appliance Control Boards

Use Scenario: Off-line rectification in constant-current LED drivers for commercial lighting fixtures.

IC Role / Device Role / Timing Role: Bridge or single-diode rectifier in flyback or buck-derived topologies operating at 50/60 Hz input.

Use Value: 4 pF C_j reduces EMI coupling into sensitive current-sense paths; low 15 mg mass aids mechanical shock resistance.

Use Scenario: Auxiliary power supply rectification in washing machines, HVAC controllers, and smart home hubs.

IC Role / Device Role / Timing Role: Compact, automated-placement rectifier for isolated 5–12 V auxiliary rails.

Use Value: SOD-123W footprint compatibility allows drop-in replacement in legacy designs; GS18 reel packaging supports high-volume SMT lines.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	600 V V_RRM, 1.0 A I_F(AV), 1500 ns t_rr, TO-277 package	Higher voltage rating but lower current and different package (TO-277 vs. DO-219AB)	Select when 600 V blocking is required and board layout accommodates larger footprint.
ON Semi MUR105	50 V V_RRM, 1.0 A I_F(AV), 75 ns t_rr, DO-41 through-hole	Ultrafast recovery, lower voltage, through-hole mounting only	Use only in low-voltage, high-frequency rectification where S1FLG-GS18's 400 V rating is excessive.

Compared with STTH1L06S and MUR105, the S1FLG-GS18 offers optimal balance of 400 V blocking, 1.5 A current, and SMT-ready DO-219AB packaging for cost-sensitive, space-constrained 50/60 Hz AC/DC conversion-neither over-specified nor under-specified for mainstream industrial and consumer power inputs.

Availability

S1FLG-GS18 is available at Aetrix Electronics and suitable for AC/DC power adapters, industrial motor control inputs, and LED driver power supplies requiring stable component supply, consistent tape-and-reel delivery, and long-term manufacturing continuity.

Supply support for S1FLG-GS18 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

Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with emphasis on reliability, precision, and power efficiency.

The S1FLG-GS18 belongs to Vishay's eSMP® standard recovery rectifier family, engineered for robust, cost-effective line-frequency rectification in industrial, consumer, and appliance power systems.

FAQ

What is the maximum operating temperature for S1FLG-GS18?

The S1FLG-GS18 has an operating junction and storage temperature range of -55 °C to +150 °C. For continuous 1.5 A operation, the case temperature (T_L) must be maintained at ≤75 °C using appropriate copper pad area per the datasheet's thermal guidelines. At 65 °C ambient, its average forward current rating drops to 0.7 A.

Is S1FLG-GS18 suitable for high-frequency switching applications?

No, the S1FLG-GS18 is a standard recovery rectifier with 1800 ns reverse recovery time-optimized for 50/60 Hz and low-kHz rectification, not high-frequency SMPS. Using it above ~10 kHz increases switching losses and EMI. For such applications, consider ultrafast rectifiers like the FRED series or Schottky diodes instead of S1FLG-GS18.

What does the "GS18" suffix indicate in S1FLG-GS18?

The "GS18" suffix denotes the packaging configuration: 10,000 units per 13-inch reel on 8 mm carrier tape, with a minimum order quantity of 50,000 units. This format is optimized for high-speed automated SMT placement. The alternative "GS08" option uses 3,000 units per 7-inch reel (MOQ = 30,000).

How does S1FLG-GS18 compare to S1FLJ-GS18 in terms of voltage rating?

The S1FLG-GS18 is rated for 400 V repetitive peak reverse voltage (V_RRM), whereas S1FLJ-GS18 is rated for 600 V V_RRM. Both share identical forward characteristics (1.1 V V_F, 1.5 A I_F(AV), 1800 ns t_rr), thermal resistance, and package. Choose S1FLG-GS18 when 400 V margin suffices-reducing cost and footprint versus higher-voltage variants.

Can S1FLG-GS18 be used in place of a through-hole rectifier like 1N4007?

The S1FLG-GS18 is not a direct replacement for 1N4007 due to differences in package (DO-219AB vs. DO-41), mounting method (SMT vs. through-hole), and thermal path. While both are standard recovery diodes, S1FLG-GS18 requires PCB pad design per its footprint recommendation and delivers superior surge current (22 A vs. 30 A for 1N4007) but lower voltage rating (400 V vs. 1000 V). Use S1FLG-GS18 only in validated SMT designs-not as a drop-in substitute.

S1FLG-GS18 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: DO-219AB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 700mA

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 1 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 1.8 µs

Current - Reverse Leakage @ Vr:: 10 µA @ 400 V

Capacitance @ Vr, F:: 4pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-219AB (SMF)

Operating Temperature - Junction:: -55°C ~ 150°C

S1FLG-GS18 FAQ

1.How can I place an order for S1FLG-GS18 through Aetrix?

Please submit a Request for Quotation (RFQ) for S1FLG-GS18 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 S1FLG-GS18 reliable?

The price and inventory of S1FLG-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1FLG-GS18 is usually 5 days.

3.What payment methods are accepted for S1FLG-GS18?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1FLG-GS18 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1FLG-GS18?

S1FLG-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1FLG-GS18 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 S1FLG-GS18?

For technical support, including S1FLG-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1FLG-GS18 requirements.

6.How does Aetrix verify that S1FLG-GS18 is sourced from the original manufacturer or authorized distributors?

All S1FLG-GS18 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 S1FLG-GS18 meets industry standards.

7.What is the process for return or replacement of S1FLG-GS18?

All S1FLG-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with S1FLG-GS18, 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 S1FLG-GS18 part is unused and in its original packaging.

Return procedure for S1FLG-GS18:

1.Submit a request within 90 days.

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

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