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

Taiwan Semiconductor Corporation SRAS8100

Name: SRAS8100
Brand: Taiwan Semiconductor Corporation
SKU: SRAS8100
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SRAS8100

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: SRAS8100.pdf

Description:: DIODE SCHOTTKY 100V 8A TO263AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SRAS8100 from Taiwan Semiconductor is a single-die Schottky barrier rectifier in TO-263AB (D2PAK) package, rated for 100 V repetitive peak reverse voltage (V_RRM), 8 A average forward current (I_F), and 150 A non-repetitive surge current (I_FSM). It delivers low forward voltage drop (0.95 V at 8 A, 25°C) and supports high-efficiency switching mode power supplies.

For engineers reviewing the SRAS8100 datasheet, SRAS8100 pinout, SRAS8100 application, or SRAS8100 equivalent, key selection considerations include its 100 V V_RRM, 0.95 V forward voltage at full load, 100 µA max reverse leakage at 25°C, junction-to-case thermal resistance of 3 °C/W, and suitability for high-density automated assembly in DC/DC converters and AC/DC adapters.

Technical Context

The SRAS8100 operates as a unidirectional surface-mount power rectifier with guard ring structure for overvoltage protection and meets JESD201 Class 2 whisker resistance. Its Schottky architecture enables fast recovery (no minority carrier storage) and low switching losses.

Thermally, it features a 3 °C/W junction-to-case resistance and supports continuous operation up to 150°C junction temperature. Reverse leakage remains ≤100 µA at 25°C and ≤5 mA at 125°C under rated 100 V reverse bias.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC/DC flyback or buck output stages
I_F	8 A - Continuous average forward current at case temperature ≤110°C; determines heatsink sizing in 50–100 W SMPS designs
I_FSM	150 A - Peak non-repetitive surge current (8.3 ms half-sine); withstands inrush and transient overload events
V_F	0.95 V @ 8 A, 25°C - Low conduction loss improves efficiency in high-current, low-voltage secondary-side rectification
R_θJC	3 °C/W - Enables direct thermal coupling to PCB copper or heatsink; simplifies thermal design for compact power modules
I_R	≤100 µA @ 100 V, 25°C - Minimal leakage preserves standby efficiency and reduces no-load power draw

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, 3-terminal configuration with anode, cathode, and exposed thermal pad (cathode-connected). Moisture sensitivity level 1 per J-STD-020; matte tin-plated leads, solderable per J-STD-002.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Input current entry point	Connected to transformer secondary or switch node; must handle full 8 A RMS and 150 A surge
Cathode (Lead 2)	Output current exit point	Common return path to output capacitor; electrically and thermally tied to exposed pad
Exposed Pad (Tab)	Thermal & electrical cathode extension	Provides primary heat dissipation path; requires ≥200 mm² copper pour for R_θJC = 3 °C/W performance

Key Features

Feature	Design Value
Guard ring overvoltage protection	Enhances ruggedness against voltage transients without external snubbers in 100 V-class SMPS outputs
10,000 V/µs dv/dt rating	Prevents false turn-on during fast-switching transitions in high-frequency (>300 kHz) converters
RoHS & halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS directives; suitable for consumer and industrial end-equipment certification
Junction temperature range –55°C to +150°C	Supports operation in sealed enclosures or high-ambient environments (e.g., LED drivers, industrial adapters)

Applications

Server Power Supply Rectification	Laptop Adapter Output Stage
Use Scenario: Secondary-side synchronous rectification replacement in 48–60 W laptop AC/DC adapters operating at 100–125 kHz. IC Role / Device Role / Timing Role: Uncontrolled Schottky rectifier providing low-loss DC output path after transformer secondary winding. Use Value: 0.95 V V_F minimizes conduction loss vs. silicon diodes, improving adapter efficiency by ~1.2% at full load while maintaining cost-effective passive rectification.	Use Scenario: Output rectification in compact, fanless server auxiliary power supplies (e.g., 12 V standby rail). IC Role / Device Role / Timing Role: High-current freewheeling path during MOSFET off-time in isolated forward or flyback topologies. Use Value: 150 A I_FSM withstands startup surges; 3 °C/W R_θJC allows direct mounting to internal heatsink, enabling >90% efficiency at 8 A output.
Industrial DC/DC Converter	LED Driver Secondary Side
Use Scenario: Input rectification in 24 V input, 5 V/8 A isolated DC/DC modules used in PLC I/O modules. IC Role / Device Role / Timing Role: Primary-side bridge rectifier converting 24 VAC or rectified 34 VDC to bulk DC bus. Use Value: 100 V V_RRM provides 2× safety margin over 34 VDC input; guard ring ensures reliability in electrically noisy factory environments.	Use Scenario: Constant-current output rectification in outdoor-rated LED drivers (IP67, –40°C to +85°C ambient). IC Role / Device Role / Timing Role: Low-loss output stage delivering stable DC to LED string after transformer isolation. Use Value: –55°C to +150°C T_J range supports extended thermal cycling; ≤5 mA I_R at 125°C prevents output drift in high-temperature luminaires.

Server Power Supply Rectification

Laptop Adapter Output Stage

Use Scenario: Secondary-side synchronous rectification replacement in 48–60 W laptop AC/DC adapters operating at 100–125 kHz.

IC Role / Device Role / Timing Role: Uncontrolled Schottky rectifier providing low-loss DC output path after transformer secondary winding.

Use Value: 0.95 V V_F minimizes conduction loss vs. silicon diodes, improving adapter efficiency by ~1.2% at full load while maintaining cost-effective passive rectification.

Use Scenario: Output rectification in compact, fanless server auxiliary power supplies (e.g., 12 V standby rail).

IC Role / Device Role / Timing Role: High-current freewheeling path during MOSFET off-time in isolated forward or flyback topologies.

Use Value: 150 A I_FSM withstands startup surges; 3 °C/W R_θJC allows direct mounting to internal heatsink, enabling >90% efficiency at 8 A output.

Industrial DC/DC Converter

LED Driver Secondary Side

Use Scenario: Input rectification in 24 V input, 5 V/8 A isolated DC/DC modules used in PLC I/O modules.

IC Role / Device Role / Timing Role: Primary-side bridge rectifier converting 24 VAC or rectified 34 VDC to bulk DC bus.

Use Value: 100 V V_RRM provides 2× safety margin over 34 VDC input; guard ring ensures reliability in electrically noisy factory environments.

Use Scenario: Constant-current output rectification in outdoor-rated LED drivers (IP67, –40°C to +85°C ambient).

IC Role / Device Role / Timing Role: Low-loss output stage delivering stable DC to LED string after transformer isolation.

Use Value: –55°C to +150°C T_J range supports extended thermal cycling; ≤5 mA I_R at 125°C prevents output drift in high-temperature luminaires.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-8EWH10	Same TO-263AB package, 100 V V_RRM, but higher V_F (1.05 V @ 8 A) and lower I_FSM (120 A)	Slightly reduced surge robustness; may require derating in high-inrush applications	Acceptable where surge margin is less critical and Vishay supply chain preference applies
ON Semiconductor SB8100	Identical V_RRM, I_F, and V_F specs; same TO-263AB footprint but different marking and thermal pad layout	Requires PCB land pattern verification due to minor pad dimension variance	Drop-in functional replacement only after confirming thermal pad copper area matches 200 mm² minimum

Compared with VS-8EWH10 and SB8100, the SRAS8100 offers superior surge capability (150 A vs. 120 A) and tighter forward voltage control (0.95 V), making it preferred for high-reliability, high-transient industrial and server power designs where thermal margin and surge immunity are prioritized.

Availability

SRAS8100 is available at Aetrix Electronics and suitable for switching mode power supplies, laptop adapters, and industrial DC/DC converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for SRAS8100 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.

The SRAS8100 belongs to TSC's SRAS8x Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact, high-frequency switching power supplies.

FAQ

What is the maximum junction temperature rating for the SRAS8100?

The SRAS8100 has a maximum junction temperature (T_J) rating of +150°C, with operational range from –55°C to +150°C. This allows reliable use in sealed or high-ambient-temperature applications such as industrial power supplies and LED drivers. The SRAS8100 maintains specified electrical parameters-including reverse leakage and forward voltage-within this full range when properly heatsinked.

Does the SRAS8100 have a guard ring structure, and what benefit does it provide?

Yes, the SRAS8100 incorporates a guard ring structure explicitly noted in its datasheet features. This design enhances edge termination robustness, improving resistance to voltage transients and preventing premature avalanche breakdown at the die periphery. In practice, this allows the SRAS8100 to sustain rated 100 V V_RRM under real-world line surges without requiring additional clamping components in SMPS output stages.

What is the reverse leakage current specification for the SRAS8100 at elevated temperature?

The SRAS8100 specifies ≤5 mA maximum reverse leakage current (I_R) at 100 V reverse voltage and 125°C junction temperature. At 25°C, leakage is ≤100 µA. This low, well-characterized leakage supports high standby efficiency in energy-sensitive applications like USB-C PD adapters and IoT power modules where the SRAS8100 is commonly deployed.

Is the SRAS8100 compatible with lead-free reflow soldering processes?

Yes, the SRAS8100 uses matte tin-plated leads compliant with J-STD-002 and is qualified for standard lead-free reflow profiles (peak temperature up to 260°C). Its moisture sensitivity level is rated at Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH without baking prior to assembly-simplifying manufacturing logistics for the SRAS8100 in high-volume SMT lines.

How does the thermal performance of the SRAS8100 compare to standard TO-220 rectifiers?

The SRAS8100 achieves a junction-to-case thermal resistance (R_θJC) of 3 °C/W-comparable to many TO-220 devices-but in a surface-mount TO-263AB package. Unlike through-hole TO-220, the SRAS8100's exposed thermal pad enables direct PCB copper conduction, eliminating mechanical mounting hardware. This makes the SRAS8100 especially advantageous in space-constrained, automated-assembly applications where board real estate and assembly cost matter.

SRAS8100 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 950 mV @ 8 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 100 µA @ 100 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263AB (D2PAK)

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

SRAS8100 FAQ

1.How can I place an order for SRAS8100 through Aetrix?

Please submit a Request for Quotation (RFQ) for SRAS8100 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 SRAS8100 reliable?

The price and inventory of SRAS8100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRAS8100 is usually 5 days.

3.What payment methods are accepted for SRAS8100?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRAS8100 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SRAS8100?

SRAS8100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SRAS8100 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 SRAS8100?

For technical support, including SRAS8100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRAS8100 requirements.

6.How does Aetrix verify that SRAS8100 is sourced from the original manufacturer or authorized distributors?

All SRAS8100 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 SRAS8100 meets industry standards.

7.What is the process for return or replacement of SRAS8100?

All SRAS8100 units undergo pre-shipment inspection (PSI). If there is an issue with SRAS8100, 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 SRAS8100 part is unused and in its original packaging.

Return procedure for SRAS8100:

1.Submit a request within 90 days.

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

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