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

Taiwan Semiconductor Corporation SR805

Name: SR805
Brand: Taiwan Semiconductor Corporation
SKU: SR805
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SR805

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SR805.pdf

Description:: DIODE SCHOTTKY 50V 8A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:5,595

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Product details

Overview

SR805 from Taiwan Semiconductor is an AEC-Q101-qualified 8A, 50V Schottky barrier rectifier in DO-201AD package, featuring 0.70V max forward voltage at 8A and 150A surge capability - deployed in automotive-grade DC/DC converters and industrial SMPS where low conduction loss and high reliability are critical.

For engineers reviewing the SR805 datasheet, SR805 pinout, SR805 application, or SR805 equivalent, key selection criteria include its 50V V_RRM, 10mA reverse leakage at 100°C, 125°C/150°C junction temperature range, DO-201AD mechanical outline, and AEC-Q101 qualification status for automotive power systems.

Technical Context

This Schottky rectifier uses a single-die construction with guard ring overvoltage protection and pure tin-plated leads compliant with J-STD-002 solderability. Its 10,000 V/µs dv/dt rating supports fast-switching topologies without parasitic turn-on.

Thermal performance is defined by R_θJA = 40°C/W and derating curves showing sustained 8A operation up to 75°C ambient (SR805–SR820 group), with junction temperature limits of –55°C to +125°C standard or +150°C for extended-range variants.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum repetitive reverse voltage; sets safe operating limit in 48V bus or 36V input DC/DC stages
I_F	8 A - Continuous average forward current; supports compact heatsinkless designs up to ~15W output
I_FSM	150 A - Non-repetitive surge rating; withstands cold-start inrush in automotive adapters
V_F @ 8A, 25°C	≤0.70 V - Low conduction loss enables >92% efficiency in 12V→5V buck converters
I_R @ 50V, 100°C	≤10 mA - Controlled leakage ensures stable bias in high-temp engine control units
T_J Range	–55°C to +125°C (standard); +150°C option available - meets under-hood thermal requirements
Package	DO-201AD - Industry-standard axial leaded outline; UL 94V-0 molding, 1.10g mass

Pinout & Package

DO-201AD package: axial-leaded, cathode band marked on body; anode and cathode terminals only - no internal gating or control pins.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input current entry point	Connected to source-side rail (e.g., switching node or input capacitor)
Cathode	Output current exit point	Feeds output filter inductor/capacitor; polarity indicated by band

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive power modules requiring zero-defect reliability and stress testing per JESD22
Guard ring structure	Prevents edge breakdown at rated V_RRM, enabling stable operation near reverse voltage limit
Low V_F / high I_F ratio	Delivers 8A conduction with ≤0.70V drop - reduces thermal load vs. silicon diodes by ~40%
J-STD-002 solderable leads	Ensures robust reflow and hand-solder joint integrity across production and repair environments
Halogen-free (IEC 61249-2-21)	Complies with automotive RoHS and ELV directives; eliminates corrosive outgassing in sealed enclosures

Applications

Automotive DC/DC Converter	Industrial SMPS Secondary Side
Use Scenario: 12V-to-5V step-down converter in ADAS camera ECU with 85°C ambient. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 0.70V V_F minimizes conduction loss at 8A peak, reducing heatsink size while maintaining AEC-Q101 compliance.	Use Scenario: 48V input telecom power supply delivering 24V/5A to base station control logic. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in active-clamp forward converter. Use Value: 150A I_FSM handles startup surges; DO-201AD allows manual rework and automated placement on legacy PTH lines.
USB-C PD Adapter	Motor Drive Power Stage
Use Scenario: 20V output stage in 65W GaN-based USB-C PD adapter operating at 200kHz. IC Role / Device Role / Timing Role: Synchronous rectification replacement in secondary-side LLC resonant converter. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast voltage transitions across transformer secondary.	Use Scenario: Brake energy recirculation path in 24V BLDC motor drive with regenerative braking. IC Role / Device Role / Timing Role: Freewheeling diode across H-bridge low-side MOSFETs during PWM off-time. Use Value: –55°C to +125°C T_J range ensures reliable operation during motor stall conditions with localized heating.

Automotive DC/DC Converter

Industrial SMPS Secondary Side

Use Scenario: 12V-to-5V step-down converter in ADAS camera ECU with 85°C ambient.

IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology.

Use Value: 0.70V V_F minimizes conduction loss at 8A peak, reducing heatsink size while maintaining AEC-Q101 compliance.

Use Scenario: 48V input telecom power supply delivering 24V/5A to base station control logic.

IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in active-clamp forward converter.

Use Value: 150A I_FSM handles startup surges; DO-201AD allows manual rework and automated placement on legacy PTH lines.

USB-C PD Adapter

Motor Drive Power Stage

Use Scenario: 20V output stage in 65W GaN-based USB-C PD adapter operating at 200kHz.

IC Role / Device Role / Timing Role: Synchronous rectification replacement in secondary-side LLC resonant converter.

Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast voltage transitions across transformer secondary.

Use Scenario: Brake energy recirculation path in 24V BLDC motor drive with regenerative braking.

IC Role / Device Role / Timing Role: Freewheeling diode across H-bridge low-side MOSFETs during PWM off-time.

Use Value: –55°C to +125°C T_J range ensures reliable operation during motor stall conditions with localized heating.

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-8EWH05FN-M3/45	Same DO-201AD package, 8A/50V, but V_F = 0.57V typ @ 8A - lower conduction loss; not AEC-Q101 qualified	Suitable for commercial-grade adapters; lacks automotive stress validation	Choose for cost-sensitive non-automotive designs needing marginally better efficiency
ON Semiconductor SB850-E3/54	DO-201AD, 8A/50V, V_F = 0.72V max @ 8A, AEC-Q101 qualified, but I_R = 200 µA @ 25°C (vs. SR805's 500 µA)	Better low-temp leakage; identical thermal and surge specs	Prefer when designing for cold-climate battery systems requiring tighter IR control at sub-zero start-up

Compared with VS-8EWH05FN-M3/45 and SB850-E3/54, the SR805 delivers balanced trade-offs: AEC-Q101 qualification plus 0.70V V_F and 10mA I_R at 100°C - making it optimal for automotive and industrial DC/DC where reliability and thermal stability outweigh marginal V_F differences.

Availability

SR805 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS, and USB-C PD adapters requiring stable component supply with AEC-Q101 assurance and DO-201AD through-hole compatibility.

Supply support for SR805 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 automotive, industrial, and consumer markets since 1979.

The SR802–SR820 series was designed specifically for high-current, medium-voltage Schottky rectification in automotive power conversion - emphasizing AEC-Q101 compliance, thermal robustness, and manufacturability in DO-201AD.

FAQ

What is the maximum junction temperature rating for SR805?

The SR805 has a standard maximum junction temperature (T_J) of +125°C, with an extended-range version rated to +150°C. Both versions operate from –55°C to their respective upper limits. The SR805 datasheet specifies these ratings under absolute maximum conditions, and thermal derating must be applied above 75°C ambient per the forward current derating curve.

Is SR805 pin-compatible with other parts in the SR802–SR820 family?

Yes - all SR802–SR820 devices share identical DO-201AD package dimensions, lead spacing, and anode/cathode terminal configuration. The SR805 uses the same mechanical outline and marking convention (cathode band), enabling direct PCB footprint reuse across the family for voltage-scaling designs.

Does SR805 meet automotive qualification standards?

Yes, the SR805 is available in AEC-Q101-qualified versions (marked with "H" suffix, e.g., SR805H). This qualification covers stress tests including HTGB, HTRB, TC, and mechanical shock - confirming suitability for automotive power modules, body control units, and infotainment power supplies.

What is the reverse leakage current specification for SR805 at elevated temperature?

At rated 50V reverse voltage and 100°C junction temperature, the SR805 exhibits a maximum reverse leakage current (I_R) of 10 mA. At 25°C, I_R is limited to 500 µA. These values are measured per pulse test (PW = 30ms) and reflect worst-case behavior under thermal stress.

Can SR805 be used in surface-mount assembly processes?

No - the SR805 is supplied exclusively in DO-201AD, a through-hole axial-leaded package. It is not compatible with SMT reflow or wave soldering unless mounted on an adapter board. For SMT alternatives, consider TSC's SMB/SMA-packaged Schottky rectifiers (e.g., SB850 series), which differ in footprint and thermal profile from the SR805.

SR805 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 50 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 700 mV @ 8 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 50 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

SR805 FAQ

1.How can I place an order for SR805 through Aetrix?

Please submit a Request for Quotation (RFQ) for SR805 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 SR805 reliable?

The price and inventory of SR805 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR805 is usually 5 days.

3.What payment methods are accepted for SR805?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR805 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SR805?

SR805 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SR805 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 SR805?

For technical support, including SR805 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR805 requirements.

6.How does Aetrix verify that SR805 is sourced from the original manufacturer or authorized distributors?

All SR805 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 SR805 meets industry standards.

7.What is the process for return or replacement of SR805?

All SR805 units undergo pre-shipment inspection (PSI). If there is an issue with SR805, 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 SR805 part is unused and in its original packaging.

Return procedure for SR805:

1.Submit a request within 90 days.

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

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