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

Taiwan Semiconductor Corporation S4D R7G

Name: S4D R7G
Brand: Taiwan Semiconductor Corporation
SKU: S4D R7G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S4D R7G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S4D R7G.pdf

Description:: DIODE GEN PURP 200V 4A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:209

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Product details

Overview

S4D R7G from Taiwan Semiconductor is a 4A, 200V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, 100A peak surge capability, 1.15V max forward voltage at 4A, and 10µA max reverse leakage at 25°C. It serves as a primary AC/DC input rectifier in compact offline power supplies.

For engineers reviewing the S4D R7G datasheet, S4D R7G pinout, S4D R7G application, or S4D R7G equivalent, key selection criteria include V_RRM=200V, I_F=4A, t_rr=1500ns, thermal resistance R_θJA=47°C/W, and DO-214AB mechanical compatibility with automated SMT assembly lines.

Technical Context

This single-die standard recovery rectifier operates with a 150°C maximum junction temperature and exhibits 60pF junction capacitance at 1MHz/4V. Its 1500ns reverse recovery time and 13°C/W junction-to-lead thermal resistance support moderate-frequency switching in cost-sensitive SMPS designs.

The device uses matte tin-plated leads compliant with J-STD-002 solderability and meets JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band, and moisture sensitivity is rated Level 1 per J-STD-020.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse voltage before breakdown; defines safe AC input voltage range in bridge or single-phase rectification
I_F	4 A - Continuous average forward current; sets thermal design margin for heatsink-free operation up to ~70°C ambient
I_FSM	100 A - Non-repetitive peak surge current (8.3ms half-sine); withstands inrush currents in AC line-connected converters
V_F @ 4A	≤1.15 V - Forward voltage drop at rated DC current; determines conduction loss and thermal load in rectifier stage
t_rr	1500 ns - Reverse recovery time under specified test conditions; impacts switching loss and EMI in 50–100kHz SMPS topologies
R_θJA	47 °C/W - Junction-to-ambient thermal resistance; used to calculate junction temperature rise on standard FR-4 PCB with 1-inch² copper pad

Pinout & Package

Package: DO-214AB (SMC), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	AC input / positive half-cycle path	Connected to transformer secondary or bridge input; carries full forward current during conduction phase
Cathode (Lead 2)	DC output / negative return path	Connected to bulk capacitor or downstream converter; polarity marking band identifies this terminal

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable long-term reliability and reduced surface leakage under humid or high-bias stress conditions
Level 1 moisture sensitivity	Eliminates need for baking prior to reflow; supports direct placement from dry pack into standard SMT process
UL 94V-0 molding compound	Meets flame-retardancy requirements for end equipment safety certifications including UL/EN 62368-1
JESD201 Class 2 whisker resistance	Prevents tin whisker growth under thermal cycling, ensuring long-term interconnect integrity in industrial environments

Applications

LED Driver Power Supply	USB Wall Adapter
Use Scenario: AC-input offline LED driver for commercial lighting with universal 85–265V AC input. IC Role / Device Role / Timing Role: Primary rectifier converting AC line to unregulated DC bus feeding PWM controller and MOSFET switch. Use Value: 200V V_RRM provides 2× safety margin over 120V RMS input; 4A rating supports up to 40W output with margin.	Use Scenario: Compact 5V/2A USB charging adapter with flyback topology operating at 65kHz. IC Role / Device Role / Timing Role: Input rectifier in single-diode configuration feeding bulk capacitor; handles 50Hz/60Hz line frequency conduction. Use Value: 1.15V V_F minimizes conduction loss at 4A peak; DO-214AB footprint enables high-density PCB layout.
Industrial Control Power Module	AC-DC Auxiliary Supply
Use Scenario: 24V auxiliary supply powering PLC I/O modules in factory automation cabinets. IC Role / Device Role / Timing Role: Rectifier in voltage-doubler or full-wave bridge configuration supplying isolated DC-DC converter input. Use Value: 100A I_FSM withstands repeated motor-start surges; 150°C T_JMAX ensures operation in enclosed 70°C ambient enclosures.	Use Scenario: Standby power supply in HVAC control board requiring continuous 3.3V/100mA output. IC Role / Device Role / Timing Role: Low-duty-cycle rectifier feeding high-voltage start-up circuit and bias winding of main converter. Use Value: 10µA I_R at 25°C reduces no-load leakage; halogen-free construction complies with RoHS and IEC 61249-2-21.

LED Driver Power Supply

USB Wall Adapter

Use Scenario: AC-input offline LED driver for commercial lighting with universal 85–265V AC input.

IC Role / Device Role / Timing Role: Primary rectifier converting AC line to unregulated DC bus feeding PWM controller and MOSFET switch.

Use Value: 200V V_RRM provides 2× safety margin over 120V RMS input; 4A rating supports up to 40W output with margin.

Use Scenario: Compact 5V/2A USB charging adapter with flyback topology operating at 65kHz.

IC Role / Device Role / Timing Role: Input rectifier in single-diode configuration feeding bulk capacitor; handles 50Hz/60Hz line frequency conduction.

Use Value: 1.15V V_F minimizes conduction loss at 4A peak; DO-214AB footprint enables high-density PCB layout.

Industrial Control Power Module

AC-DC Auxiliary Supply

Use Scenario: 24V auxiliary supply powering PLC I/O modules in factory automation cabinets.

IC Role / Device Role / Timing Role: Rectifier in voltage-doubler or full-wave bridge configuration supplying isolated DC-DC converter input.

Use Value: 100A I_FSM withstands repeated motor-start surges; 150°C T_JMAX ensures operation in enclosed 70°C ambient enclosures.

Use Scenario: Standby power supply in HVAC control board requiring continuous 3.3V/100mA output.

IC Role / Device Role / Timing Role: Low-duty-cycle rectifier feeding high-voltage start-up circuit and bias winding of main converter.

Use Value: 10µA I_R at 25°C reduces no-load leakage; halogen-free construction complies with RoHS and IEC 61249-2-21.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR420	Ultrafast recovery (t_rr = 75ns), higher V_F (1.3V), same DO-214AB package and I_F/V_RRM	Better suited for higher-frequency (>100kHz) flyback or resonant converters where switching loss dominates	Select MUR420 when t_rr reduction justifies higher conduction loss and cost premium
Vishay VS-4EWH02-M3	Standard recovery (t_rr = 2000ns), identical V_RRM/I_F, slightly higher V_F (1.2V), same DO-214AB	Valid drop-in replacement where 500ns longer t_rr is acceptable and alternate sourcing is required	Choose VS-4EWH02-M3 for dual-source procurement without layout or thermal redesign

Compared with MUR420 and VS-4EWH02-M3, the S4D R7G offers balanced trade-off between recovery speed and forward loss at lower cost, making it optimal for 50–100kHz general-purpose offline power supplies where thermal budget and BOM cost are prioritized over ultrafast switching.

Availability

S4D R7G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and AC-DC adapters requiring stable component supply, consistent parametric performance, and full traceability across production lots.

Supply support for S4D R7G 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 global power, industrial, and consumer markets since 1979.

The S4A–S4M series was designed specifically for cost-effective, high-reliability AC/DC front-end rectification in space-constrained surface-mount power supplies, emphasizing manufacturability, thermal robustness, and compliance with international environmental standards.

FAQ

What is the maximum junction temperature rating for the S4D R7G?

The S4D R7G has a maximum junction temperature (T_J) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This allows reliable operation in enclosed industrial environments where ambient temperatures reach 70–80°C, provided PCB copper area and airflow meet thermal derating curves shown in Figure 1. The S4D R7G must not exceed this limit during steady-state or transient conditions.

Does the S4D R7G have a halogen-free construction?

Yes, the S4D R7G uses halogen-free molding compound compliant with IEC 61249-2-21, as explicitly stated in the "Features" section of the Taiwan Semiconductor datasheet. This applies to all S4A–S4M family members, including the S4D R7G, and supports compliance with environmental directives in EU, Japan, and North American markets without requiring material declaration exceptions.

Is the S4D R7G suitable for use in a full-wave bridge rectifier configuration?

Yes, the S4D R7G is a single-die, single-junction standard recovery rectifier intended for use in discrete full-wave bridge configurations. Each S4D R7G handles one leg of the bridge; four units form a complete bridge. Its 200V V_RRM and 100A I_FSM make it appropriate for 120V AC input bridges, and its DO-214AB package supports automated assembly alongside complementary devices.

What does the "R7G" suffix indicate in S4D R7G?

The "R7G" suffix in S4D R7G is Taiwan Semiconductor's internal date/batch code: "R7" denotes year-week (e.g., 2027 Week 7), and "G" indicates factory and process variant. It does not affect electrical specifications-only the base "S4D" defines 200V V_RRM. All S4D-marked devices, including S4D R7G, share identical absolute maximum ratings and electrical characteristics per the K2102 datasheet revision.

How is polarity identified on the S4D R7G package?

Polarity on the S4D R7G is identified by a molded cathode band located near one lead end of the DO-214AB (SMC) package. As confirmed in the "Mechanical Data" and "Marking Diagram" sections of the datasheet, the banded terminal is the cathode; the opposite lead is the anode. This marking is visible under standard optical inspection and compatible with automated optical recognition (AOI) systems.

S4D R7G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 4A

Voltage - Forward (Vf) (Max) @ If:: 1.15 V @ 4 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 200 V

Capacitance @ Vr, F:: 60pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

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

S4D R7G FAQ

1.How can I place an order for S4D R7G through Aetrix?

Please submit a Request for Quotation (RFQ) for S4D R7G 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 S4D R7G reliable?

The price and inventory of S4D R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4D R7G is usually 5 days.

3.What payment methods are accepted for S4D R7G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4D R7G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S4D R7G?

S4D R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S4D R7G 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 S4D R7G?

For technical support, including S4D R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4D R7G requirements.

6.How does Aetrix verify that S4D R7G is sourced from the original manufacturer or authorized distributors?

All S4D R7G 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 S4D R7G meets industry standards.

7.What is the process for return or replacement of S4D R7G?

All S4D R7G units undergo pre-shipment inspection (PSI). If there is an issue with S4D R7G, 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 S4D R7G part is unused and in its original packaging.

Return procedure for S4D R7G:

1.Submit a request within 90 days.

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

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