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

Taiwan Semiconductor Corporation SRAS8150

Name: SRAS8150
Brand: Taiwan Semiconductor Corporation
SKU: SRAS8150
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SRAS8150

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

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

Datasheet:: SRAS8150.pdf

Description:: 8A, 150V, SCHOTTKY RECTIFIER

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SRAS8150 from Taiwan Semiconductor is a single-die, surface-mount Schottky barrier rectifier in TO-263AB (D2PAK) package, rated for 150 V repetitive peak reverse voltage (V_RRM), 8 A average forward current (I_F), and 150 A non-repetitive surge current (I_FSM). It operates up to 150 °C junction temperature and delivers 0.95 V typical forward voltage at 8 A and 25 °C - optimized for high-efficiency DC/DC converters and SMPS secondary-side rectification.

For engineers reviewing the SRAS8150 datasheet, SRAS8150 pinout, SRAS8150 application, or SRAS8150 equivalent, key selection factors include its 150 V V_RRM, 0.95 V V_F @ 8 A, 150 A I_FSM, TO-263AB thermal performance (R_θJC = 3 °C/W), and moisture sensitivity level 1 compliance - critical for automated SMT assembly and high-reliability power stages.

Technical Context

The SRAS8150 implements a single-die Schottky junction with guard ring structure for overvoltage protection and enhanced dv/dt ruggedness (10,000 V/µs). Its low forward voltage drop and high surge capability stem from optimized metal-semiconductor interface design and thick copper leadframe construction in the D2PAK package.

Thermally, it leverages the TO-263AB's exposed drain pad for direct PCB heat sinking, achieving 3 °C/W junction-to-case resistance. Electrical behavior is characterized across temperature: reverse leakage remains ≤5 mA at 125 °C and rated V_R, supporting stable operation in thermally constrained environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - maximum sustainable reverse voltage before breakdown; defines usable input/output voltage range in DC/DC and SMPS designs
I_F	8 A - continuous average forward current at case temperature ≤110 °C; sets steady-state power handling capacity
I_FSM	150 A - peak non-repetitive surge current (8.3 ms half-sine); enables robustness against line transients and startup inrush
V_F @ 8 A, 25 °C	0.95 V - low conduction loss directly reduces power dissipation and improves system efficiency at full load
R_θJC	3 °C/W - high thermal conductivity from junction to case; allows effective heatsinking via PCB copper area under exposed pad
T_J max	150 °C - extended junction temperature rating supports operation in high-ambient industrial or enclosed power supplies
MSL	Level 1 (J-STD-020) - no floor life limitation; compatible with standard reflow without baking preconditioning

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, with exposed drain pad (cathode) and two signal terminals (anode and cathode tab). Molding compound meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode (lead)	Forward current entry point	Connected to input/source side of rectifier; requires adequate trace width for 8 A continuous current
Cathode (tab)	Forward current exit / common return	Exposed metal pad on underside - must be soldered to large PCB copper pour for thermal and electrical return path
Cathode (lead)	Secondary cathode connection	Provides additional low-inductance current path parallel to tab; improves high-frequency switching stability

Key Features

Feature	Design Value
Guard ring structure	Enhances edge termination reliability and increases dv/dt immunity to 10,000 V/µs - suppresses premature avalanche during fast voltage transients
Single-die Schottky configuration	Minimizes parasitic inductance and thermal gradients versus multi-chip assemblies - improves current sharing and transient response
Moisture sensitivity level 1	Eliminates pre-bake requirement prior to reflow; reduces manufacturing cycle time and avoids moisture-induced popcorning
Halogen-free compound (IEC 61249-2-21)	Meets environmental compliance for RoHS and WEEE without compromising flame retardancy (UL 94V-0)
High I_FSM/I_F ratio (18.75:1)	Enables reliable operation under short-duration overload conditions - critical for adapter and charger output stage survivability

Applications

Server VRM Output Rectification	Laptop AC Adapter Secondary Side
Use Scenario: High-current, low-voltage DC output stage in server voltage regulator modules delivering 12 V or 5 V at >60 A per phase. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacement - functions as uncontrolled Schottky diode in OR-ing or freewheeling paths. Use Value: 0.95 V V_F minimizes conduction loss at high I_F, while 150 °C T_J max ensures stability under sustained load and ambient temperatures up to 85 °C.	Use Scenario: Secondary-side rectification in compact 65 W–100 W laptop AC adapters with tight thermal envelopes. IC Role / Device Role / Timing Role: Freewheeling diode in flyback or LLC resonant converter output stage. Use Value: TO-263AB package enables efficient PCB heat spreading; MSL Level 1 simplifies high-volume SMT line integration without dry-pack handling.
Industrial DC/DC Converter Input Protection	Telecom Power Shelf OR-ing Diode
Use Scenario: Reverse polarity and backfeed protection at input of isolated 48 V DC/DC converters used in PLC and sensor interface modules. IC Role / Device Role / Timing Role: Unidirectional blocking element placed between input bus and converter primary. Use Value: 150 V V_RRM provides 3× margin over nominal 48 V bus, and 10,000 V/µs dv/dt rating prevents false turn-on during bus transients.	Use Scenario: OR-ing diode in redundant 54 V telecom power shelves where multiple PSUs feed a common output bus. IC Role / Device Role / Timing Role: Lossy but highly reliable passive OR-ing element replacing active MOSFET controllers in cost-sensitive designs. Use Value: Single-die construction and 150 A I_FSM withstand hot-swap events and load dump surges without derating.

Server VRM Output Rectification

Laptop AC Adapter Secondary Side

Use Scenario: High-current, low-voltage DC output stage in server voltage regulator modules delivering 12 V or 5 V at >60 A per phase.

IC Role / Device Role / Timing Role: Primary synchronous rectifier replacement - functions as uncontrolled Schottky diode in OR-ing or freewheeling paths.

Use Value: 0.95 V V_F minimizes conduction loss at high I_F, while 150 °C T_J max ensures stability under sustained load and ambient temperatures up to 85 °C.

Use Scenario: Secondary-side rectification in compact 65 W–100 W laptop AC adapters with tight thermal envelopes.

IC Role / Device Role / Timing Role: Freewheeling diode in flyback or LLC resonant converter output stage.

Use Value: TO-263AB package enables efficient PCB heat spreading; MSL Level 1 simplifies high-volume SMT line integration without dry-pack handling.

Industrial DC/DC Converter Input Protection

Telecom Power Shelf OR-ing Diode

Use Scenario: Reverse polarity and backfeed protection at input of isolated 48 V DC/DC converters used in PLC and sensor interface modules.

IC Role / Device Role / Timing Role: Unidirectional blocking element placed between input bus and converter primary.

Use Value: 150 V V_RRM provides 3× margin over nominal 48 V bus, and 10,000 V/µs dv/dt rating prevents false turn-on during bus transients.

Use Scenario: OR-ing diode in redundant 54 V telecom power shelves where multiple PSUs feed a common output bus.

IC Role / Device Role / Timing Role: Lossy but highly reliable passive OR-ing element replacing active MOSFET controllers in cost-sensitive designs.

Use Value: Single-die construction and 150 A I_FSM withstand hot-swap events and load dump surges without derating.

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-8EWH150N-M3/45	Same V_RRM (150 V), higher I_F (10 A), slightly higher V_F (1.05 V @ 8 A), TO-263AB package	Higher continuous current rating suits higher-power adapters; 0.1 V higher V_F increases conduction loss by ~10.5% at 8 A	Select when >8 A average current is required and 0.1 V V_F penalty is acceptable for thermal margin
ON Semiconductor SB8150	Identical V_RRM, I_F, and V_F; same TO-263AB package; differs in marking, qualification level (AEC-Q101 not claimed for SRAS8150)	No functional difference in power circuit operation; SB8150 qualified for automotive-grade stress testing	Select SB8150 only if AEC-Q101 qualification is mandatory; otherwise SRAS8150 offers identical electrical performance at lower cost

Compared with VS-8EWH150N-M3/45 and SB8150, the SRAS8150 provides optimal balance of 150 V rating, 0.95 V forward drop, and MSL Level 1 - making it preferred for cost-sensitive, high-volume industrial and computing power supplies where automotive qualification is unnecessary.

Availability

SRAS8150 is available at Aetrix Electronics and suitable for switching mode power supplies, laptop adapters, and industrial DC/DC converters requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for SRAS8150 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and consumer applications.

The SRAS8xxx series was developed specifically for high-efficiency, surface-mount secondary-side rectification in compact AC/DC and isolated DC/DC converters - emphasizing low V_F, high surge tolerance, and seamless SMT manufacturability.

FAQ

What is the maximum junction temperature rating for the SRAS8150?

The SRAS8150 has a maximum junction temperature (T_J) rating of +150 °C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as enclosed power supplies or industrial enclosures where case temperatures may exceed 100 °C. Derating curves confirm usable I_F up to 110 °C case temperature, and thermal resistance R_θJC = 3 °C/W enables effective heat transfer to the PCB. The SRAS8150 must not be operated beyond this limit to ensure reliability and lifetime compliance.

Does the SRAS8150 have a guarded junction, and why does it matter?

Yes, the SRAS8150 incorporates a guard ring structure around its Schottky junction, explicitly cited in its features list. This design mitigates electric field crowding at the silicon edge, improving voltage standoff consistency and enhancing immunity to fast transients. With a specified critical dv/dt rating of 10,000 V/µs, the guard ring prevents spurious turn-on during switching node ringing - a key reliability factor in high-frequency SMPS and LLC converters where the SRAS8150 is commonly deployed.

What is the forward voltage of the SRAS8150 at 8 A and 125 °C?

The SRAS8150 datasheet specifies forward voltage only at 25 °C (0.95 V typ @ 8 A) and does not provide a guaranteed V_F value at 125 °C. However, characteristic curves (Fig.4) show V_F increases with temperature - extrapolating from the trend, V_F at 125 °C and 8 A is approximately 0.82–0.85 V. For design-critical thermal analysis, engineers should use the 25 °C value with derating or consult TSC's SPICE model if available. The SRAS8150's low V_F stability across temperature contributes to predictable power loss in the SRAS8150.

Is the SRAS8150 suitable for automated pick-and-place assembly?

Yes, the SRAS8150 is explicitly designed for automated placement, as confirmed in its FEATURES section. Its TO-263AB (D2PAK) package has standardized dimensions, matte tin-plated leads compliant with J-STD-002, and moisture sensitivity level 1 - eliminating bake requirements before reflow. The device's marking code "SRAS8150" and date code format are machine-readable, and its weight (1.37 g) falls within standard feeder tolerance ranges. These attributes make the SRAS8150 fully compatible with high-speed SMT lines used for power supply manufacturing.

How does the SRAS8150 compare to lower-voltage variants like SRAS860 in terms of forward voltage?

The SRAS8150 exhibits higher forward voltage than lower-voltage variants: SRAS860 is rated at 0.70 V typ @ 8 A and 25 °C, while the SRAS8150 is 0.95 V typ under identical conditions. This reflects the trade-off between reverse voltage capability and Schottky barrier height - higher V_RRM devices require wider bandgap or modified metallization, increasing V_F. Despite this, the SRAS8150 maintains competitive efficiency in 48 V–54 V telecom and industrial systems where its 150 V rating provides essential safety margin. Designers selecting the SRAS8150 must account for this 0.25 V increase relative to SRAS860.

SRAS8150 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):: 150 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 @ 150 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

SRAS8150 FAQ

1.How can I place an order for SRAS8150 through Aetrix?

Please submit a Request for Quotation (RFQ) for SRAS8150 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 SRAS8150 reliable?

The price and inventory of SRAS8150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRAS8150 is usually 5 days.

3.What payment methods are accepted for SRAS8150?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRAS8150 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SRAS8150?

SRAS8150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SRAS8150 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 SRAS8150?

For technical support, including SRAS8150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRAS8150 requirements.

6.How does Aetrix verify that SRAS8150 is sourced from the original manufacturer or authorized distributors?

All SRAS8150 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 SRAS8150 meets industry standards.

7.What is the process for return or replacement of SRAS8150?

All SRAS8150 units undergo pre-shipment inspection (PSI). If there is an issue with SRAS8150, 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 SRAS8150 part is unused and in its original packaging.

Return procedure for SRAS8150:

1.Submit a request within 90 days.

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

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