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

Taiwan Semiconductor Corporation SR805H

Name: SR805H
Brand: Taiwan Semiconductor Corporation
SKU: SR805H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SR805H

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SR805H.pdf

Description:: DIODE SCHOTTKY 50V 8A DO201AD

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Inventory:6,613

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Product details

Overview

SR805H 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/25°C, 150A surge capability, and guard ring overvoltage protection-used in automotive-grade DC-DC converters and industrial SMPS.

For engineers reviewing the SR805H datasheet, SR805H pinout, SR805H application, or SR805H equivalent, key selection criteria include its 50V V_RRM, 10mA reverse leakage at 100°C, -55°C to +150°C junction range, DO-201AD mechanical compatibility, and AEC-Q101 qualification for under-hood power conversion.

Technical Context

This discrete Schottky diode uses a single-die construction with pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Its guard ring structure enhances ruggedness against transient overvoltage events.

Thermal performance is defined by R_θJA = 40°C/W and operation up to T_J = +150°C, supporting high-density board layouts where thermal management is constrained. The 8.3ms non-repetitive I_FSM rating of 150A enables robust handling of inrush and fault currents.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 48V automotive and 36V industrial bus applications.
I_F	8 A - Continuous average forward current; supports compact 50–100W converter designs without forced air cooling.
V_F (max)	0.70 V @ 8A, 25°C - Low conduction loss enabling >92% efficiency in 12V→5V/3.3V synchronous-buck auxiliary rails.
I_FSM	150 A - Peak surge current rating; withstands cold-start inrush in vehicle battery-fed systems.
T_J max	+150°C - Extended junction temperature rating allows placement near hot components in engine-control modules.
I_R (max)	10 µA @ 50V, 25°C; 10 mA @ 50V, 100°C - Low leakage preserves standby power budget in always-on ECUs.
R_θJA	40 °C/W - Thermal resistance enables ~1.5W dissipation with 60°C ambient rise; suitable for double-sided PCB mounting.

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; 1.10g mass; UL 94V-0 molding compound; polarity indicated by single black band on cathode end.

Pin/Terminal	Circuit Role	Design Meaning
Anode (lead without band)	Forward current entry	Connected to input/bus side; requires adequate copper pour for thermal relief and current handling.
Cathode (lead with black band)	Forward current exit / reverse blocking terminal	Connected to output/load side; cathode band must align with PCB silkscreen polarity indicator.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive power electronics including engine control units and ADAS domain controllers.
Guard ring structure	Improves dv/dt immunity to 10,000 V/µs, reducing risk of false turn-on during fast-switching transients.
Low V_F at high I_F	0.70V max at 8A enables <0.56W conduction loss-critical for thermally constrained under-dash modules.
Halogen-free & RoHS	Complies with IEC 61249-2-21 and EU RoHS; supports green manufacturing and end-of-life compliance.
150A I_FSM	Supports 10× rated current surge, allowing use without derating in 12V battery backup circuits with capacitive loads.

Applications

Automotive DC-DC Converters	Industrial SMPS Secondary Rectification
Use Scenario: High-efficiency 12V→3.3V/5V buck converter in automotive body control module (BCM) with ambient up to 105°C. IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diodes to reduce conduction loss and thermal stress. Use Value: 0.70V V_F cuts power loss by ~40% vs. 1.1V Si diode, lowering heatsink requirement and improving reliability at T_J = 150°C.	Use Scenario: Secondary-side freewheeling diode in 48V telecom rectifier with 8A continuous load and 150A lightning-surge exposure. IC Role / Device Role / Timing Role: Unidirectional current path with fast recovery and low stored charge to minimize switching losses. Use Value: Guard ring and 10,000 V/µs dv/dt rating prevent spurious conduction during MOSFET turn-off transients in hard-switched topologies.
USB-C PD Adapters	Motor Drive Auxiliary Power Supply
Use Scenario: Synchronous rectification replacement in 65W USB-C PD adapter secondary stage operating at 100kHz–300kHz. IC Role / Device Role / Timing Role: Low-V_F Schottky rectifier minimizing conduction loss while maintaining zero-voltage switching integrity. Use Value: 10mA I_R at 100°C ensures minimal standby leakage, meeting Energy Star Level VI and EU CoC v5 no-load power limits.	Use Scenario: Isolated auxiliary supply (24V→5V) powering gate drivers and MCU in industrial servo inverters. IC Role / Device Role / Timing Role: Input-side rectifier feeding linear regulator or buck controller; must survive motor regeneration spikes. Use Value: 150A I_FSM and 50V V_RRM tolerate 2× bus overvoltage events during regenerative braking without failure.

Automotive DC-DC Converters

Industrial SMPS Secondary Rectification

Use Scenario: High-efficiency 12V→3.3V/5V buck converter in automotive body control module (BCM) with ambient up to 105°C.

IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diodes to reduce conduction loss and thermal stress.

Use Value: 0.70V V_F cuts power loss by ~40% vs. 1.1V Si diode, lowering heatsink requirement and improving reliability at T_J = 150°C.

Use Scenario: Secondary-side freewheeling diode in 48V telecom rectifier with 8A continuous load and 150A lightning-surge exposure.

IC Role / Device Role / Timing Role: Unidirectional current path with fast recovery and low stored charge to minimize switching losses.

Use Value: Guard ring and 10,000 V/µs dv/dt rating prevent spurious conduction during MOSFET turn-off transients in hard-switched topologies.

USB-C PD Adapters

Motor Drive Auxiliary Power Supply

Use Scenario: Synchronous rectification replacement in 65W USB-C PD adapter secondary stage operating at 100kHz–300kHz.

IC Role / Device Role / Timing Role: Low-V_F Schottky rectifier minimizing conduction loss while maintaining zero-voltage switching integrity.

Use Value: 10mA I_R at 100°C ensures minimal standby leakage, meeting Energy Star Level VI and EU CoC v5 no-load power limits.

Use Scenario: Isolated auxiliary supply (24V→5V) powering gate drivers and MCU in industrial servo inverters.

IC Role / Device Role / Timing Role: Input-side rectifier feeding linear regulator or buck controller; must survive motor regeneration spikes.

Use Value: 150A I_FSM and 50V V_RRM tolerate 2× bus overvoltage events during regenerative braking without failure.

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 = 0.67V typ (vs. 0.70V max for SR805H); AEC-Q101 qualified.	Lower typical V_F	Preferred where 30mV V_F reduction justifies sourcing from alternate vendor; identical footprint and thermal profile.
ON Semiconductor SB850	DO-201AD, 8A/50V, V_F = 0.72V max, AEC-Q101 qualified; higher I_R (200µA @ 25°C) than SR805H (500µA max).	Slightly higher leakage may impact ultra-low-power standby modes.	Acceptable for cost-sensitive industrial designs where 500µA vs. 200µA leakage is not critical.

Compared with VS-8EWH05FN-M3/45 and SB850, the SR805H offers tighter V_F maximum (0.70V), lower specified I_R at elevated temperature (10mA @ 100°C), and identical AEC-Q101 validation-making it optimal for thermally aggressive automotive environments requiring guaranteed worst-case conduction and leakage behavior.

Availability

SR805H is available at Aetrix Electronics and suitable for automotive power conversion, industrial SMPS design, and USB-C PD adapter development requiring stable component supply with full AEC-Q101 traceability.

Supply support for SR805H 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 family was designed specifically for high-reliability, high-current Schottky rectification in automotive power systems and industrial switch-mode supplies-emphasizing AEC-Q101 compliance, thermal ruggedness, and consistent V_F performance across temperature.

FAQ

What is the peak repetitive reverse voltage rating of the SR805H?

The SR805H has a peak repetitive reverse voltage (V_RRM) rating of 50 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2105), and defines the maximum DC or sinusoidal AC reverse voltage the device can block continuously without breakdown. It is not interchangeable with higher-voltage variants like SR806 (60V) or SR809 (90V).

Is the SR805H qualified to AEC-Q101 standards?

Yes, the "H" suffix in SR805H explicitly denotes AEC-Q101 qualification per the Ordering Information section (Page 3, Version J2105). This includes stress testing for temperature cycling, humidity bias, ESD, and high-temperature operating life-validating suitability for automotive power electronics such as body control modules and ADAS subsystems.

What is the maximum forward voltage drop for the SR805H at 8A and 25°C?

The SR805H has a maximum forward voltage (V_F) of 0.70 V at I_F = 8 A and T_J = 25°C, as specified in the Electrical Specifications table (Page 2, Version J2105). This is a guaranteed upper limit-not a typical value-and applies under pulsed test conditions (PW = 0.3 ms), ensuring design margin for worst-case conduction loss calculation.

Does the SR805H have a guard ring structure, and what is its function?

Yes, the SR805H incorporates a guard ring structure, explicitly listed under FEATURES (Page 1, Version J2105). This design feature improves edge termination robustness, enhancing the device's ability to withstand transient overvoltage and high dv/dt stress-critical for reliability in noisy automotive and industrial switching environments where voltage spikes exceed steady-state ratings.

What is the junction-to-ambient thermal resistance (R_θJA) of the SR805H in standard mounting?

The SR805H has a typical junction-to-ambient thermal resistance (R_θJA) of 40°C/W, measured under standard JEDEC test conditions for DO-201AD packages (Page 2, Version J2105). This value assumes a minimum 1-inch² copper pad on FR-4 PCB with no internal planes; actual thermal performance improves with larger copper areas or thermal vias.

SR805H 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:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

SR805H FAQ

1.How can I place an order for SR805H through Aetrix?

Please submit a Request for Quotation (RFQ) for SR805H 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 SR805H reliable?

The price and inventory of SR805H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR805H is usually 5 days.

3.What payment methods are accepted for SR805H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR805H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SR805H?

SR805H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SR805H 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 SR805H?

For technical support, including SR805H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR805H requirements.

6.How does Aetrix verify that SR805H is sourced from the original manufacturer or authorized distributors?

All SR805H 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 SR805H meets industry standards.

7.What is the process for return or replacement of SR805H?

All SR805H units undergo pre-shipment inspection (PSI). If there is an issue with SR805H, 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 SR805H part is unused and in its original packaging.

Return procedure for SR805H:

1.Submit a request within 90 days.

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

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