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

Taiwan Semiconductor Corporation SR310

Name: SR310
Brand: Taiwan Semiconductor Corporation
SKU: SR310
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SR310

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SR310.pdf

Description:: DIODE SCHOTTKY 100V 3A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:6,423

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Product details

Overview

SR310 from Taiwan Semiconductor is a 3A, 100V Schottky barrier rectifier in DO-201AD package, featuring 0.85V forward voltage at 3A and 100µA reverse leakage at 25°C, optimized for high-efficiency DC/DC converters and automotive-grade power supplies.

For engineers reviewing the SR310 datasheet, SR310 pinout, SR310 application, or SR310 equivalent, key selection criteria include its AEC-Q101 qualification (when ordered as SR310H), 80A surge rating, 10,000 V/µs dv/dt capability, and thermal resistance profile critical for thermal design in compact SMPS layouts.

Technical Context

The SR310 operates as a single-die, unidirectional Schottky rectifier with cathode-band polarity marking and pure tin-plated leads compliant with J-STD-002. Its junction temperature range spans –55°C to +150°C, supporting operation in under-hood automotive environments.

Thermal performance is defined by R_θJA = 50°C/W and R_θJC = 15°C/W, enabling reliable 3A continuous conduction when mounted on standard PCB copper areas. The device uses guard ring technology to enhance overvoltage robustness without compromising low VF.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage; sets upper limit for DC bus or flyback clamp voltage handling
I_F	3 A - Continuous forward current rating; defines steady-state power delivery capacity
I_FSM	80 A - Non-repetitive surge current (8.3ms half-sine); supports inrush and transient overload tolerance
V_F	0.85 V @ 3A, 25°C - Low conduction loss directly reduces heat generation and improves system efficiency
I_R	100 µA @ 100V, 25°C - Low reverse leakage preserves standby power integrity in energy-sensitive designs
dv/dt	10,000 V/µs - High critical rate of rise enables stable operation in fast-switching topologies like synchronous rectification
T_J max	+150°C - Extended junction temperature rating allows use in high-ambient industrial or automotive applications

Pinout & Package

Package: DO-201AD - Axial-leaded, molded plastic case rated UL 94V-0; 1.10g weight; cathode indicated by band; RoHS and halogen-free compliant.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Input current entry point	Connected to source-side of switching node; must handle full 3A DC + ripple current
Cathode (Lead 2, banded end)	Output current exit point	Connects to output rail or ground return; polarity marking prevents reverse installation

Key Features

Feature	Design Value
Guard ring structure	Enhances edge termination robustness against transient overvoltage, improving reliability in noisy DC/DC feedback loops
AEC-Q101 qualification option	Available as SR310H - validated for automotive power modules requiring stress-tested component reliability
Low thermal resistance	R_θJC = 15°C/W enables direct heatsinking via lead frame, reducing need for supplemental thermal vias
Pure tin plating	Ensures consistent solderability per J-STD-002, eliminating lead-free assembly compatibility concerns
High surge capability	80A I_FSM supports repeated cold-start events in AC/DC adapters without degradation

Applications

Automotive DC/DC Converter	Industrial SMPS Secondary Side
Use Scenario: 12V-to-5V/3.3V buck converter in engine control unit (ECU) with 150°C ambient requirement. IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diode to reduce conduction loss and thermal load. Use Value: 0.85V V_F cuts rectifier power loss by ~40% vs. 1.1V Si diode, lowering heatsink size and enabling smaller ECU housing.	Use Scenario: Secondary-side synchronous rectification in 48V telecom power supply with 3A output current. IC Role / Device Role / Timing Role: Freewheeling path during high-side switch off-time; handles continuous 3A with minimal voltage drop. Use Value: 100µA I_R at 25°C and <2mA at 125°C ensures low standby leakage, meeting Energy Star Level VI requirements.
USB-C PD Adapter	LED Driver Power Stage
Use Scenario: Output rectification in 65W USB-C PD adapter operating at 100kHz+ switching frequency. IC Role / Device Role / Timing Role: Fast-recovery rectifier in active-clamp flyback secondary winding. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during rapid voltage transitions, eliminating spurious conduction.	Use Scenario: Constant-current LED driver for street lighting with 100V bus and 3A load. IC Role / Device Role / Timing Role: Main output rectifier in buck-derived topology handling pulsed 3A LED current. Use Value: DO-201AD mechanical robustness and 150°C T_J max support outdoor thermal cycling without derating.

Automotive DC/DC Converter

Industrial SMPS Secondary Side

Use Scenario: 12V-to-5V/3.3V buck converter in engine control unit (ECU) with 150°C ambient requirement.

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

Use Value: 0.85V V_F cuts rectifier power loss by ~40% vs. 1.1V Si diode, lowering heatsink size and enabling smaller ECU housing.

Use Scenario: Secondary-side synchronous rectification in 48V telecom power supply with 3A output current.

IC Role / Device Role / Timing Role: Freewheeling path during high-side switch off-time; handles continuous 3A with minimal voltage drop.

Use Value: 100µA I_R at 25°C and <2mA at 125°C ensures low standby leakage, meeting Energy Star Level VI requirements.

USB-C PD Adapter

LED Driver Power Stage

Use Scenario: Output rectification in 65W USB-C PD adapter operating at 100kHz+ switching frequency.

IC Role / Device Role / Timing Role: Fast-recovery rectifier in active-clamp flyback secondary winding.

Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during rapid voltage transitions, eliminating spurious conduction.

Use Scenario: Constant-current LED driver for street lighting with 100V bus and 3A load.

IC Role / Device Role / Timing Role: Main output rectifier in buck-derived topology handling pulsed 3A LED current.

Use Value: DO-201AD mechanical robustness and 150°C T_J max support outdoor thermal cycling 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-3EJH01-M3/5AT	Same DO-201AD package, 100V V_RRM, but 0.72V V_F @ 3A and 200µA I_R @ 25°C	Lower VF improves efficiency but higher leakage may affect ultra-low-power standby	Prefer for efficiency-critical, lower-temperature environments where leakage is less constrained
ON Semiconductor SB3100-E3/54	DO-201AD, 100V, 3A, 0.82V V_F @ 3A, 100µA I_R @ 25°C, no AEC-Q101 option	Lacks automotive qualification path; identical thermal specs and leakage behavior	Select when AEC-Q101 is not required and cost sensitivity favors ON Semi's channel pricing

Compared with VS-3EJH01-M3/5AT and SB3100-E3/54, the SR310 offers the only AEC-Q101-qualified variant in this voltage/current class, making it uniquely suitable for automotive power modules where qualification traceability is mandatory.

Availability

SR310 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS designs, and USB-C PD adapters requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant variants.

Supply support for SR310 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 global power electronics and automotive markets since 1979.

The SR302–SR320 series was designed specifically for high-reliability, medium-current Schottky rectification in space-constrained power supplies where thermal efficiency, surge resilience, and automotive qualification converge.

FAQ

What is the maximum junction temperature rating for the SR310?

The SR310 has a maximum junction temperature (T_J) rating of +150°C, verified per the absolute maximum ratings table in the official TSC datasheet Version J2105. This extended rating enables reliable operation in under-hood automotive environments and high-ambient industrial enclosures where thermal management is constrained. The SR310 maintains full 3A current capability up to this temperature when properly heatsinked.

Is the SR310 pin-compatible with other parts in the SR302–SR320 family?

Yes, all parts in the SR302–SR320 family-including the SR310-share identical DO-201AD packaging, anode/cathode pinout, and mechanical dimensions. This uniformity allows direct substitution across voltage grades (20V–200V) without PCB layout changes, provided electrical parameters such as V_RRM and V_F meet the target design requirements.

Does the SR310 have AEC-Q101 qualification?

The base SR310 is not AEC-Q101 qualified; however, the variant SR310H is explicitly qualified per AEC-Q101. Per TSC's ordering information, the "H" suffix denotes automotive qualification, including stress testing for temperature cycling, humidity, and mechanical shock. Engineers requiring automotive compliance must specify SR310H-not SR310-to ensure qualification traceability.

What is the forward voltage of the SR310 at 3A and 100°C junction temperature?

The SR310 datasheet specifies V_F = 0.85V maximum at 3A and 25°C. While no exact V_F value is given at 100°C, typical Schottky behavior shows V_F decreases ~2mV/°C; thus, V_F at 100°C is estimated near 0.71V. For design-critical thermal analysis, engineers should reference Figure 4 (Typical Forward Characteristics) in the SR302–SR320 datasheet, which confirms reduced V_F across temperature for SR309–SR310.

How does the SR310's reverse leakage compare to lower-voltage variants like SR305?

At 25°C and rated V_R, the SR310 exhibits 100µA maximum reverse leakage (I_R), while SR305 (50V) shows 500µA. This reflects the higher barrier height and optimized doping profile used in 100V+ Schottky devices. At 125°C, SR310's I_R remains ≤2mA, whereas SR305's is ≤5mA-confirming tighter leakage control in the SR310 for high-temperature standby performance.

SR310 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):: 100 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 850 mV @ 3 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:: Through Hole

Supplier Device Package:: DO-201AD

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

SR310 FAQ

1.How can I place an order for SR310 through Aetrix?

Please submit a Request for Quotation (RFQ) for SR310 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 SR310 reliable?

The price and inventory of SR310 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR310 is usually 5 days.

3.What payment methods are accepted for SR310?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR310 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SR310?

SR310 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SR310 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 SR310?

For technical support, including SR310 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR310 requirements.

6.How does Aetrix verify that SR310 is sourced from the original manufacturer or authorized distributors?

All SR310 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 SR310 meets industry standards.

7.What is the process for return or replacement of SR310?

All SR310 units undergo pre-shipment inspection (PSI). If there is an issue with SR310, 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 SR310 part is unused and in its original packaging.

Return procedure for SR310:

1.Submit a request within 90 days.

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

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