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

Taiwan Semiconductor Corporation SRA1620

Name: SRA1620
Brand: Taiwan Semiconductor Corporation
SKU: SRA1620
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SRA1620

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: SRA1620.pdf

Description:: 16A, 20V, PLANAR SCHOTTKY

Quantity:: RFQ Add To RFQ list

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Inventory:4,790

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Product details

Overview

SRA1620 from Taiwan Semiconductor is a 16A, 20V repetitive peak reverse voltage Schottky barrier rectifier in TO-220AC package, featuring 0.55V forward voltage at 16A and 25°C, 200A surge capability, and AEC-Q101 qualification option (SRA1620H), used in high-efficiency DC/DC converters and SMPS secondary-side rectification.

For engineers reviewing the SRA1620 datasheet, SRA1620 pinout, SRA1620 application, or SRA1620 equivalent, key selection criteria include forward voltage drop at rated current, thermal resistance (5°C/W junction-to-case), reverse leakage at 100°C (15mA), and compatibility with high-frequency switching topologies requiring low recovery loss.

Technical Context

This single-die Schottky rectifier operates with zero reverse recovery time and minimal switching loss, enabling high-frequency operation up to several hundred kHz. Its guard ring structure provides overvoltage protection, and matte tin-plated leads ensure reliable solderability per J-STD-002.

The device supports continuous forward current of 16A at case temperature ≤75°C, derating linearly to zero at 150°C junction temperature. Thermal performance is defined by a typical R_θJC of 5°C/W, enabling direct heatsink mounting without isolation pads in many industrial designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	20 V - Maximum reverse blocking voltage before breakdown; sets minimum input/output voltage differential for safe operation in 12V-output SMPS.
I_F	16 A - Continuous average forward current at T_C = 75°C; defines steady-state power delivery capacity in DC/DC output stage.
V_F	0.55 V @ 16A, 25°C - Low conduction loss enables >94% efficiency in 12V-to-5V buck converters at full load.
I_FSM	200 A - Non-repetitive surge rating for 8.3ms half-sine; withstands inrush and fault currents without bond-wire fusing.
R_θJC	5 °C/W - Junction-to-case thermal resistance; allows ~10W dissipation with 50°C temperature rise to heatsink at 16A.
T_J max	125°C / 150°C - Maximum operating junction temperature; dual rating indicates version-dependent thermal specification (125°C standard, 150°C for AEC-Q101 variant).
I_R @ 25°C	500 µA - Reverse leakage at rated V_RRM; low leakage minimizes standby power loss in adapter no-load conditions.

Pinout & Package

TO-220AC package: single-ended, 3-lead outline with center tab (cathode) electrically connected to case; anode and cathode terminals on outer leads; polarity marked on device body.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Input current entry point	Connected to transformer secondary or switch node; must handle full 16A RMS current and 200A surge.
Cathode (Lead 2)	Output current exit point	Electrically tied to metal tab; requires insulated mounting if referenced to non-ground potential.
Metal Tab (Cathode)	Thermal & electrical cathode path	Primary heat transfer surface; must be mounted to heatsink with thermal interface material; electrically active.

Key Features

Feature	Design Value
Guard ring structure	Enhances edge termination reliability under transient overvoltage, preventing premature avalanche failure in unregulated input conditions.
AEC-Q101 qualification option	SRA1620H variant meets automotive-grade stress testing for under-hood power modules and infotainment DC/DC supplies.
Low V_F Schottky architecture	Eliminates reverse recovery charge (Q_rr ≈ 0), removing snubber requirements and reducing EMI in high-frequency SMPS designs.
RoHS + halogen-free	Complies with IEC 61249-2-21; enables use in consumer electronics and EU medical peripherals without substance-of-concern reporting.

Applications

Server Power Supply	USB-C PD Adapter
Use Scenario: Secondary-side synchronous rectification in 48V-to-12V intermediate bus converter. IC Role / Device Role / Timing Role: Schottky rectifier replacing MOSFET-based synchronous solution where gate drive complexity outweighs marginal efficiency gain. Use Value: 0.55V V_F reduces conduction loss by 35% vs. 100V Si diode, improving full-load efficiency from 92.1% to 94.3% at 16A output.	Use Scenario: Output rectification in compact 65W USB-C PD adapter with 5V/9V/15V/20V programmable output. IC Role / Device Role / Timing Role: Primary output rectifier handling up to 16A at 5V, operating at 100–300kHz switching frequency. Use Value: 200A I_FSM withstands repeated hot-plug surges; TO-220AC package enables direct bolt-down heatsinking in space-constrained enclosures.
Industrial PLC Power Module	LED Driver Secondary Rectification
Use Scenario: 24V auxiliary rail generation in DIN-rail mounted PLC with wide ambient temperature range (-25°C to +70°C). IC Role / Device Role / Timing Role: Input-stage rectifier feeding isolated DC/DC converter; exposed to line transients and thermal cycling. Use Value: Guard ring and JESD201 Class 2 whisker resistance ensure long-term reliability under vibration and thermal stress; 150°C T_J max supports derated operation at elevated ambient.	Use Scenario: Constant-current LED driver output stage delivering 12V/1.5A to high-brightness COB arrays. IC Role / Device Role / Timing Role: Low-loss freewheeling path during PWM dimming intervals; conducts only during off-time of buck controller. Use Value: 500µA reverse leakage at 25°C prevents capacitor discharge between PWM cycles, maintaining stable current regulation without added hold-up capacitance.

Server Power Supply

USB-C PD Adapter

Use Scenario: Secondary-side synchronous rectification in 48V-to-12V intermediate bus converter.

IC Role / Device Role / Timing Role: Schottky rectifier replacing MOSFET-based synchronous solution where gate drive complexity outweighs marginal efficiency gain.

Use Value: 0.55V V_F reduces conduction loss by 35% vs. 100V Si diode, improving full-load efficiency from 92.1% to 94.3% at 16A output.

Use Scenario: Output rectification in compact 65W USB-C PD adapter with 5V/9V/15V/20V programmable output.

IC Role / Device Role / Timing Role: Primary output rectifier handling up to 16A at 5V, operating at 100–300kHz switching frequency.

Use Value: 200A I_FSM withstands repeated hot-plug surges; TO-220AC package enables direct bolt-down heatsinking in space-constrained enclosures.

Industrial PLC Power Module

LED Driver Secondary Rectification

Use Scenario: 24V auxiliary rail generation in DIN-rail mounted PLC with wide ambient temperature range (-25°C to +70°C).

IC Role / Device Role / Timing Role: Input-stage rectifier feeding isolated DC/DC converter; exposed to line transients and thermal cycling.

Use Value: Guard ring and JESD201 Class 2 whisker resistance ensure long-term reliability under vibration and thermal stress; 150°C T_J max supports derated operation at elevated ambient.

Use Scenario: Constant-current LED driver output stage delivering 12V/1.5A to high-brightness COB arrays.

IC Role / Device Role / Timing Role: Low-loss freewheeling path during PWM dimming intervals; conducts only during off-time of buck controller.

Use Value: 500µA reverse leakage at 25°C prevents capacitor discharge between PWM cycles, maintaining stable current regulation without added hold-up capacitance.

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-16CTQ020PbF	Same 20V V_RRM, 16A I_F, TO-220AC; V_F = 0.52V @ 16A (slightly lower), R_θJC = 4.5°C/W (better thermal).	Not AEC-Q101 qualified; lacks guard ring; higher IR (1mA @ 25°C) limits low-power standby use.	Preferred for cost-sensitive industrial adapters where automotive qualification is unnecessary.
ON Semiconductor MBR1620CT	20V V_RRM, 16A I_F, TO-220AB (dual-diode center-tap); V_F = 0.62V @ 16A; R_θJC = 6.5°C/W.	Center-tap configuration suits full-wave bridge replacement; not single-diode drop-in; higher V_F increases conduction loss.	Only suitable when dual-anode topology is required; otherwise inferior thermal and conduction performance vs. SRA1620.

Compared with VS-16CTQ020PbF and MBR1620CT, the SRA1620 offers balanced trade-offs: AEC-Q101 readiness, guard ring robustness, and 0.55V V_F that delivers measurable efficiency gain in 12V-output SMPS while maintaining industry-standard TO-220AC mechanical fit.

Availability

SRA1620 is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C PD adapters, and industrial DC/DC converters requiring stable component supply, automotive-grade variants (SRA1620H), and RoHS-compliant discrete rectification.

Supply support for SRA1620 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 industrial, computing, and consumer markets since 1979.

The SRA1620 belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact, thermally constrained power supplies.

FAQ

What is the maximum junction temperature rating for the SRA1620?

The SRA1620 has a maximum junction temperature (T_J) rating of 125°C for the standard version. A higher 150°C rating applies to the AEC-Q101 qualified SRA1620H variant. Both versions specify storage temperature from –55°C to +150°C. Thermal design must account for R_θJC = 5°C/W and derating curves shown in the official SRA1620 datasheet.

Is the SRA1620 pin-compatible with other TO-220AC Schottky rectifiers?

Yes, the SRA1620 uses the standard TO-220AC outline with anode–cathode–cathode-tab pin assignment (Lead 1 = anode, Lead 2 = cathode, metal tab = cathode). It shares mechanical footprint and mounting hole pattern with industry-standard TO-220AC rectifiers such as VS-16CTQ020PbF and STPS1620CT, enabling direct board-level substitution where electrical specs align.

Does the SRA1620 have AEC-Q101 qualification?

The base SRA1620 is not AEC-Q101 qualified; however, the SRA1620H variant is explicitly qualified per AEC-Q101. The "H" suffix denotes automotive-grade screening including temperature cycling, highly accelerated life testing (HALT), and mechanical shock validation. Designers requiring automotive compliance must specify SRA1620H, not SRA1620.

What is the forward voltage of the SRA1620 at 16A and 100°C junction temperature?

The SRA1620 datasheet specifies V_F = 0.55V maximum at I_F = 16A and T_J = 25°C. At T_J = 100°C, V_F decreases to approximately 0.47V due to negative temperature coefficient of Schottky diodes. This reduction improves conduction efficiency at elevated temperatures but requires verification against actual thermal design.

How does the guard ring in the SRA1620 improve reliability?

The guard ring in the SRA1620 enhances edge termination robustness by distributing electric field stress away from the active junction periphery. This prevents premature avalanche breakdown during transient overvoltage events-such as load dump or inductive kickback-and extends device lifetime in unregulated or poorly filtered input stages common in industrial power supplies.

SRA1620 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 20 V

Current - Average Rectified (Io):: 16A

Voltage - Forward (Vf) (Max) @ If:: 550 mV @ 16 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 20 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

Operating Temperature - Junction:: -55°C ~ 125°C

SRA1620 FAQ

1.How can I place an order for SRA1620 through Aetrix?

Please submit a Request for Quotation (RFQ) for SRA1620 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 SRA1620 reliable?

The price and inventory of SRA1620 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRA1620 is usually 5 days.

3.What payment methods are accepted for SRA1620?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRA1620 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SRA1620?

SRA1620 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SRA1620 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 SRA1620?

For technical support, including SRA1620 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRA1620 requirements.

6.How does Aetrix verify that SRA1620 is sourced from the original manufacturer or authorized distributors?

All SRA1620 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 SRA1620 meets industry standards.

7.What is the process for return or replacement of SRA1620?

All SRA1620 units undergo pre-shipment inspection (PSI). If there is an issue with SRA1620, 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 SRA1620 part is unused and in its original packaging.

Return procedure for SRA1620:

1.Submit a request within 90 days.

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

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