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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

Taiwan Semiconductor Corporation SRF1620

Name: SRF1620
Brand: Taiwan Semiconductor Corporation
SKU: SRF1620
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SRF1620

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Diode Arrays

Package:: TO-220-3 Full Pack, Isolated Tab

Datasheet:: SRF1620.pdf

Description:: DIODE ARR SCHOT 20V 16A ITO220AB

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Product details

Overview

SRF1620 from Taiwan Semiconductor is a 16A, 20V repetitive peak reverse voltage Schottky barrier rectifier in ITO-220AB package with dual-die configuration, 2.5°C/W junction-to-case thermal resistance, and AEC-Q101 qualification option (SRF1620H). It delivers low forward voltage (max 0.55V at 8A, 25°C) and high surge capability (200A, 8.3ms) for compact SMPS designs.

For engineers reviewing the SRF1620 datasheet, SRF1620 pinout, SRF1620 application, or SRF1620 equivalent, key selection factors include its 20V V_RRM, 125°C max junction temperature, UL Recognized File #E-326243 compliance, matte tin-plated leads per J-STD-002, and guard ring–enabled overvoltage protection-critical for automotive-grade power conversion reliability.

Technical Context

The SRF1620 implements a dual-die Schottky structure in a single ITO-220AB case, enabling parallel current handling while maintaining low conduction loss. Its 2.5°C/W R_θJC supports high-power density mounting on heatsinks without forced airflow.

Rated for -55°C to +125°C operation (with optional +150°C version in higher-voltage variants), it uses guard ring technology to suppress edge breakdown and withstand transient overvoltages common in DC-DC converter flyback and synchronous rectification circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	20 V - Maximum repetitive reverse blocking voltage; defines safe operating range in low-voltage DC-DC outputs and adapter secondary-side rectification.
I_F	16 A - Continuous forward current rating at case temperature; enables high-efficiency 12–24V output stages without external cooling.
I_FSM	200 A - Non-repetitive surge current (8.3ms half-sine); sustains inrush and fault transients in industrial power supplies.
V_F (max)	0.55 V @ 8A, 25°C - Low conduction loss reduces heat generation and improves system efficiency above 90% in 12V/15A converters.
R_θJC	2.5 °C/W - Junction-to-case thermal resistance; allows direct heatsink mounting with predictable temperature rise under full load.
T_J max	125 °C - Maximum junction temperature; sets thermal design margin for sealed enclosures and ambient temperatures up to 85°C.
I_R (max)	500 µA @ 20V, 25°C - Low leakage ensures minimal standby power loss in always-on auxiliary rails.

Pinout & Package

Package: ITO-220AB - Insulated TO-220 variant with internal isolation between collector (case) and emitter terminals; 1.70g weight; UL 94V-0 molding compound; matte tin-plated leads solderable per J-STD-002; polarity marked on device body.

Pin/Terminal	Circuit Role	Design Meaning
Tab / Case	Cathode (isolated)	Electrically isolated metal tab serves as cathode connection; enables direct heatsink mounting without insulating hardware.
Lead 1	Anode	Primary anode terminal; carries full forward current; designed for PCB trace or wire termination with 0.56 N·m max mounting torque.
Lead 2	Anode (dual-die common)	Second anode lead tied internally to first anode; provides redundant current path and mechanical stability for 16A continuous operation.

Key Features

Feature	Design Value
Guard ring structure	Suppresses edge avalanche breakdown, improving reliability under repetitive voltage transients in switching node applications.
AEC-Q101 qualified option (SRF1620H)	Validated for automotive power modules requiring stress-tested robustness across temperature cycling and humidity exposure.
Dual-die configuration	Shares 16A load across two parallel Schottky junctions, reducing individual die thermal stress and enhancing long-term current-carrying stability.
UL Recognized File #E-326243	Confirms flammability, electrical clearance, and material safety for end-equipment certification in Class 2 power supplies.
Halogen-free per IEC 61249-2-21	Meets environmental compliance requirements for RoHS-aligned manufacturing and end-of-life processing.

Applications

Automotive DC-DC Converters	Industrial SMPS Outputs
Use Scenario: 12V-to-5V/3.3V point-of-load conversion in engine control units and ADAS domain controllers. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement; handles high-frequency (100–500 kHz) rectification with minimal conduction loss. Use Value: 0.55V V_F reduces power dissipation by >30% vs. standard silicon diodes, lowering heatsink mass and enabling conformal coating in vibration-prone environments.	Use Scenario: Output rectification in 24V/15A open-frame industrial switch-mode power supplies. IC Role / Device Role / Timing Role: Main output freewheeling diode in forward or flyback topologies operating at 60–120 kHz. Use Value: 200A I_FSM withstands startup surges and short-circuit foldback events without degradation, supporting EN 62368-1 fault tolerance requirements.
Consumer Adapter Secondary Side	Telecom DC-DC Modules
Use Scenario: 19V/3.4A laptop adapter secondary rectification with space-constrained heatsinking. IC Role / Device Role / Timing Role: High-current Schottky rectifier replacing TO-220 silicon diodes to meet CoC Tier 2 efficiency targets. Use Value: 2.5°C/W R_θJC enables passive cooling via small aluminum extrusions, eliminating fan noise and improving MTBF.	Use Scenario: 48V-to-12V intermediate bus converter in telecom shelf power systems. IC Role / Device Role / Timing Role: Isolated output rectifier in phase-shifted full-bridge topology with 200 kHz switching frequency. Use Value: Guard ring protection maintains stable V_RRM under line transients (IEC 61000-4-5), preventing catastrophic failure during lightning-induced surges.

Automotive DC-DC Converters

Industrial SMPS Outputs

Use Scenario: 12V-to-5V/3.3V point-of-load conversion in engine control units and ADAS domain controllers.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement; handles high-frequency (100–500 kHz) rectification with minimal conduction loss.

Use Value: 0.55V V_F reduces power dissipation by >30% vs. standard silicon diodes, lowering heatsink mass and enabling conformal coating in vibration-prone environments.

Use Scenario: Output rectification in 24V/15A open-frame industrial switch-mode power supplies.

IC Role / Device Role / Timing Role: Main output freewheeling diode in forward or flyback topologies operating at 60–120 kHz.

Use Value: 200A I_FSM withstands startup surges and short-circuit foldback events without degradation, supporting EN 62368-1 fault tolerance requirements.

Consumer Adapter Secondary Side

Telecom DC-DC Modules

Use Scenario: 19V/3.4A laptop adapter secondary rectification with space-constrained heatsinking.

IC Role / Device Role / Timing Role: High-current Schottky rectifier replacing TO-220 silicon diodes to meet CoC Tier 2 efficiency targets.

Use Value: 2.5°C/W R_θJC enables passive cooling via small aluminum extrusions, eliminating fan noise and improving MTBF.

Use Scenario: 48V-to-12V intermediate bus converter in telecom shelf power systems.

IC Role / Device Role / Timing Role: Isolated output rectifier in phase-shifted full-bridge topology with 200 kHz switching frequency.

Use Value: Guard ring protection maintains stable V_RRM under line transients (IEC 61000-4-5), preventing catastrophic failure during lightning-induced surges.

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 package; 0.52V V_F (typ), but no guard ring or AEC-Q101 option.	Lacks integrated overvoltage protection; requires external snubbing in noisy industrial environments.	Preferred where lowest V_F dominates and automotive qualification is unnecessary.
ON Semiconductor MBR1620CT	20V V_RRM, 16A I_F, TO-220AB package; 0.65V V_F (max), no AEC-Q101, higher R_θJC (3.0°C/W).	Higher conduction loss increases thermal load; not rated for automotive underhood temperature profiles.	Suitable for cost-sensitive consumer adapters where 125°C operation is not required.

Compared with VS-16CTQ020PbF and MBR1620CT, the SRF1620 offers superior transient robustness via guard ring design and AEC-Q101 availability-making it the preferred choice for automotive and industrial applications demanding long-term reliability under voltage stress and thermal cycling.

Availability

SRF1620 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and consumer adapter secondary-side rectification requiring stable component supply and consistent parametric performance across production batches.

Supply support for SRF1620 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and computing markets since 1979.

The SRF1620 belongs to TSC's AEC-Q101–qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in automotive and industrial power conversion systems.

FAQ

What is the maximum junction temperature rating for the SRF1620?

The SRF1620 has a maximum junction temperature (T_J) of +125°C under normal operating conditions. This rating applies to the standard version; higher-voltage members of the SRF16xx family (e.g., SRF16100, SRF16150) extend to +150°C. The 125°C limit defines the upper thermal boundary for derating calculations and heatsink sizing in continuous 16A operation.

Does the SRF1620 have AEC-Q101 qualification?

The base SRF1620 is not AEC-Q101 qualified; however, the SRF1620H variant-identical in all electrical and thermal specifications-is explicitly qualified per AEC-Q101. The "H" suffix denotes automotive-grade screening, including extended temperature cycling, high-temperature operating life, and unbiased high-humidity bias testing. Always specify SRF1620H for automotive applications.

What is the forward voltage specification for the SRF1620 at full rated current?

The SRF1620 specifies a maximum forward voltage (V_F) of 0.55 V at 8 A and 25°C junction temperature. At full 16 A continuous current, V_F rises due to self-heating; typical curves show ~0.62 V at 16 A and 100°C junction temperature. This value is measured under pulsed conditions (0.3 ms pulse width) to minimize thermal effects during test.

How does the guard ring feature improve reliability in the SRF1620?

The guard ring in the SRF1620 is a diffused p-type region surrounding the main Schottky junction that equalizes electric field distribution at the silicon edge. This prevents premature avalanche breakdown during voltage transients-such as those occurring in flyback snubber networks or load dump events-thereby extending device lifetime and maintaining stable V_RRM performance over 10+ years in automotive applications.

What packaging and taping options are available for the SRF1620?

The SRF1620 is supplied in ITO-220AB package, packed 50 units per tube. Tape-and-reel packaging is not offered for this part number. For automated assembly, customers may use tube-to-tape transfer equipment compatible with ITO-220AB dimensions. The "H" variant (SRF1620H) uses identical packaging and packing format.

SRF1620 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-3 Full Pack, Isolated Tab

Packaging:: Tube

Product Status:: Active

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

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

Current - Average Rectified (Io) (per Diode):: 16A

Voltage - Forward (Vf) (Max) @ If:: 550 mV @ 8 A

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

Reverse Recovery Time (trr):: -

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

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ITO-220AB

SRF1620 FAQ

1.How can I place an order for SRF1620 through Aetrix?

Please submit a Request for Quotation (RFQ) for SRF1620 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 SRF1620 reliable?

The price and inventory of SRF1620 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRF1620 is usually 5 days.

3.What payment methods are accepted for SRF1620?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRF1620 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SRF1620?

SRF1620 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SRF1620 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 SRF1620?

For technical support, including SRF1620 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRF1620 requirements.

6.How does Aetrix verify that SRF1620 is sourced from the original manufacturer or authorized distributors?

All SRF1620 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 SRF1620 meets industry standards.

7.What is the process for return or replacement of SRF1620?

All SRF1620 units undergo pre-shipment inspection (PSI). If there is an issue with SRF1620, 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 SRF1620 part is unused and in its original packaging.

Return procedure for SRF1620:

1.Submit a request within 90 days.

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

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