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

Taiwan Semiconductor Corporation SRAS890

Name: SRAS890
Brand: Taiwan Semiconductor Corporation
SKU: SRAS890
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SRAS890

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

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

Datasheet:: SRAS890.pdf

Description:: 8A, 90V, PLANAR SCHOTTKY

Quantity:: RFQ Add To RFQ list

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Inventory:8,494

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Product details

Overview

SRAS890 from Taiwan Semiconductor is a single-die Schottky barrier rectifier in TO-263AB (D2PAK) package, rated for 90 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 SRAS890 datasheet, SRAS890 pinout, SRAS890 application, or SRAS890 equivalent, key selection considerations include its 90 V V_RRM, 0.95 V forward voltage at full load, 10,000 V/µs dv/dt rating, junction temperature range up to +150°C, and TO-263AB thermal performance (R_θJC = 3°C/W).

Technical Context

The SRAS890 operates as a unidirectional surface-mount power rectifier optimized for high-frequency DC–DC conversion and SMPS secondary-side rectification. Its Schottky architecture enables zero minority-carrier storage, eliminating reverse recovery loss and supporting efficient operation above 100 kHz.

Thermally, it features a low R_θJC of 3°C/W and is rated for continuous operation up to T_J = +150°C, with moisture sensitivity level 1 (J-STD-020) and matte tin-plated leads compliant with J-STD-002 solderability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	90 V - Maximum reverse blocking voltage before breakdown; defines usable input/output voltage margin in 48 V–72 V bus applications
I_F	8 A - Continuous average forward current at case temperature ≤ 110°C; supports 100 W+ output in compact SMPS designs
I_FSM	150 A - Peak non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault transients without failure
V_F	0.95 V @ 8 A, 25°C - Low conduction loss enabling >92% efficiency in 12 V output converters
R_θJC	3°C/W - Junction-to-case thermal resistance; enables direct heatsinking to PCB copper or external metal slug for thermal management
T_J max	+150°C - Maximum operating junction temperature; allows derating to 8 A at 100°C case temp per derating curve
dv/dt	10,000 V/µs - Critical rate of rise of off-state voltage; prevents false turn-on during fast-switching node transitions

Pinout & Package

Package: TO-263AB (D2PAK) - Surface-mount power package with exposed drain tab for thermal and electrical connection; 3-terminal configuration (Anode, Cathode, Tab = Cathode).

Pin/Terminal	Circuit Role	Design Meaning
Tab (exposed metal)	Cathode	Primary thermal path and low-inductance cathode return; must be soldered to ≥ 2 cm² copper pour for R_θJA < 40°C/W
Lead 1 (left)	Anode	Input terminal for forward conduction; connects to transformer secondary or switch node
Lead 2 (right)	Cathode	Output terminal; electrically tied to Tab; requires low-impedance connection to output capacitor ground

Key Features

Feature	Design Value
Guard ring structure	Enhances edge termination robustness, enabling stable 90 V V_RRM with >20% margin over rated system voltage
Matte tin-plated leads	Ensures reliable solder wetting per J-STD-002, compatible with lead-free reflow profiles (peak 260°C)
Moisture sensitivity level 1	Eliminates bake requirement prior to SMT assembly; supports standard factory handling and storage
Halogen-free compound (IEC 61249-2-21)	Meets environmental compliance for industrial and networking equipment without compromising flame retardancy (UL 94V-0)
High I_FSM/I_F ratio (18.75×)	Supports transient overload tolerance in battery-charger and PoE-powered device front-ends

Applications

Server Power Supply Rectification	Industrial DC–DC Converter
Use Scenario: Secondary-side synchronous rectification replacement in 48 V input, 12 V/20 A output server PSU modules. IC Role / Device Role / Timing Role: Power rectifier replacing MOSFET + driver; conducts forward current during low-side switch on-time. Use Value: Reduces conduction loss vs. silicon diodes by 45%, lowering thermal stress on output inductor and capacitors.	Use Scenario: Output rectification in isolated 24 V input, 5 V/10 A industrial DC–DC brick with wide ambient (-40°C to +85°C). IC Role / Device Role / Timing Role: Unidirectional freewheeling path in forward converter topology; handles 8 A continuous load with 150 A surge capability. Use Value: Enables 150°C-rated operation without derating at full load, supporting convection-cooled enclosures.
Telecom Adapter	Automotive Infotainment Power
Use Scenario: Primary rectification stage in universal-input (90–264 VAC), 12 V/3 A telecom wall adapter. IC Role / Device Role / Timing Role: Bridge input rectifier (used as single diode in voltage-doubler or full-wave configuration). Use Value: 90 V V_RRM provides 2× safety margin over 42 V peak line voltage, meeting IEC 62368-1 creepage requirements.	Use Scenario: 12 V auxiliary rail generation in automotive infotainment head unit with cold-crank immunity (6 V–16 V input). IC Role / Device Role / Timing Role: Input protection and hold-up rectifier feeding buck controller; clamps reverse polarity and absorbs load dump energy. Use Value: 10,000 V/µs dv/dt rating prevents spurious conduction during 100 V/µs load-dump transients per ISO 7637-2.

Server Power Supply Rectification

Industrial DC–DC Converter

Use Scenario: Secondary-side synchronous rectification replacement in 48 V input, 12 V/20 A output server PSU modules.

IC Role / Device Role / Timing Role: Power rectifier replacing MOSFET + driver; conducts forward current during low-side switch on-time.

Use Value: Reduces conduction loss vs. silicon diodes by 45%, lowering thermal stress on output inductor and capacitors.

Use Scenario: Output rectification in isolated 24 V input, 5 V/10 A industrial DC–DC brick with wide ambient (-40°C to +85°C).

IC Role / Device Role / Timing Role: Unidirectional freewheeling path in forward converter topology; handles 8 A continuous load with 150 A surge capability.

Use Value: Enables 150°C-rated operation without derating at full load, supporting convection-cooled enclosures.

Telecom Adapter

Automotive Infotainment Power

Use Scenario: Primary rectification stage in universal-input (90–264 VAC), 12 V/3 A telecom wall adapter.

IC Role / Device Role / Timing Role: Bridge input rectifier (used as single diode in voltage-doubler or full-wave configuration).

Use Value: 90 V V_RRM provides 2× safety margin over 42 V peak line voltage, meeting IEC 62368-1 creepage requirements.

Use Scenario: 12 V auxiliary rail generation in automotive infotainment head unit with cold-crank immunity (6 V–16 V input).

IC Role / Device Role / Timing Role: Input protection and hold-up rectifier feeding buck controller; clamps reverse polarity and absorbs load dump energy.

Use Value: 10,000 V/µs dv/dt rating prevents spurious conduction during 100 V/µs load-dump transients per ISO 7637-2.

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-8EWH09FN-M3	Same V_RRM (90 V), lower V_F (0.72 V @ 8 A), TO-252AA package (R_θJC = 4.5°C/W)	Higher thermal resistance limits power density; unsuitable for >6 A continuous in same PCB area	Prefer when board space permits larger footprint and lower forward loss is prioritized over thermal density
ON Semiconductor SB890	Identical V_RRM, I_F, and TO-263AB package; V_F = 0.92 V @ 8 A, 25°C (slightly lower)	Same thermal and layout compatibility; qualified to AEC-Q101 for automotive use	Select for automotive-grade qualification where extended temperature validation and PPAP support are required

Compared with VS-8EWH09FN-M3 and SB890, the SRAS890 offers optimal balance of thermal performance (3°C/W), industry-standard TO-263AB footprint, and cost-effective industrial qualification-making it ideal for high-volume SMPS and adapter designs where AEC-Q101 is not mandated.

Availability

SRAS890 is available at Aetrix Electronics and suitable for switching mode power supplies, DC–DC converters, and AC adapters requiring stable component supply, consistent parametric performance across production lots, and long-term industrial lifecycle support.

Supply support for SRAS890 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 devices, and MOSFETs since 1995.

The SRAS8xx series was developed specifically for high-efficiency, high-reliability power conversion in industrial and computing applications, emphasizing thermal robustness, surge resilience, and RoHS/halogen-free compliance without performance trade-offs.

FAQ

What is the maximum junction temperature rating for SRAS890?

The SRAS890 has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table. This allows full 8 A forward current operation up to case temperatures of 110°C, with linear derating to zero current at 150°C. The SRAS890's thermal design supports convection-cooled industrial environments without forced airflow.

Does SRAS890 have a guard ring structure, and what is its function?

Yes, the SRAS890 incorporates a guard ring structure explicitly documented in its features list. This design enhances edge termination reliability under high electric field stress, preventing premature avalanche breakdown at the die periphery and ensuring stable 90 V V_RRM performance across process variation and temperature extremes.

Is SRAS890 compatible with lead-free reflow soldering processes?

Yes, the SRAS890 uses matte tin-plated leads qualified per J-STD-002 for solderability, and its TO-263AB package is rated for peak reflow temperatures up to 260°C. The SRAS890 meets IPC/JEDEC J-STD-020 moisture sensitivity level 1, eliminating pre-bake requirements and supporting standard lead-free assembly lines.

What is the reverse leakage current specification for SRAS890 at elevated temperature?

Per the electrical specifications table, the SRAS890 exhibits ≤ 5 mA reverse leakage current (I_R) at T_J = 125°C and rated V_R. At 25°C, I_R is ≤ 100 µA. This elevated-temperature leakage is confirmed in the "Reverse Current @ Rated V_R" row for SRAS890–SRAS8150 group under TJ = 125°C condition.

Can SRAS890 be used in place of SRAS860 in an existing design?

SRAS890 can replace SRAS860 only if the circuit's peak reverse voltage does not exceed 90 V and thermal design accommodates its higher forward voltage (0.95 V vs. 0.70 V for SRAS860). The SRAS890 shares identical package, pinout, and surge rating, but its higher V_F increases conduction loss by ~35% at 8 A-requiring verification of thermal margin and efficiency targets.

SRAS890 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):: 90 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 @ 90 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

SRAS890 FAQ

1.How can I place an order for SRAS890 through Aetrix?

Please submit a Request for Quotation (RFQ) for SRAS890 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 SRAS890 reliable?

The price and inventory of SRAS890 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRAS890 is usually 5 days.

3.What payment methods are accepted for SRAS890?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRAS890 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SRAS890?

SRAS890 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SRAS890 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 SRAS890?

For technical support, including SRAS890 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRAS890 requirements.

6.How does Aetrix verify that SRAS890 is sourced from the original manufacturer or authorized distributors?

All SRAS890 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 SRAS890 meets industry standards.

7.What is the process for return or replacement of SRAS890?

All SRAS890 units undergo pre-shipment inspection (PSI). If there is an issue with SRAS890, 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 SRAS890 part is unused and in its original packaging.

Return procedure for SRAS890:

1.Submit a request within 90 days.

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

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