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

Taiwan Semiconductor Corporation SFAF1604G

Name: SFAF1604G
Brand: Taiwan Semiconductor Corporation
SKU: SFAF1604G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFAF1604G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-220-2 Full Pack

Datasheet:: SFAF1604G.pdf

Description:: DIODE GEN PURP 200V 16A ITO220AC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SFAF1604G from Taiwan Semiconductor is a single-die super fast rectifier diode rated for 16 A average forward current, 200 V repetitive peak reverse voltage (V_RRM), and 35 ns reverse recovery time (t_rr), with forward voltage of 0.975 V at 16 A and 25°C junction temperature - used in high-frequency switching power supplies for efficient freewheeling and output rectification.

For engineers reviewing the SFAF1604G datasheet, SFAF1604G pinout, SFAF1604G application, or SFAF1604G equivalent, key selection criteria include its ITO-220AC package thermal resistance (R_θJC = 1.3 °C/W), low VF under full load, AEC-Q101 qualification option (SFAF1604GH), and verified 200 A surge capability for transient robustness in DC-DC converters.

Technical Context

This device operates as a unidirectional, single-junction silicon rectifier optimized for high-speed switching applications where low conduction loss and fast turn-off are critical. Its glass-passivated chip junction ensures stable performance across -55°C to +150°C junction temperature range, and its 130 pF junction capacitance at 1 MHz / 4.0 V reverse bias supports minimal switching noise in SMPS topologies.

The SFAF1604G delivers 16 A continuous forward current with 0.975 V typical forward drop at rated load and 25°C, enabling reduced thermal stress in compact power stages. Its 200 A non-repetitive surge rating (8.3 ms half-sine) and 1.3 °C/W junction-to-case thermal resistance support reliable operation under short-term overload conditions without derating beyond 150°C maximum junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost converter output stage
I_F	16 A - Continuous average forward current; determines heatsink sizing and PCB copper area requirements
t_rr	35 ns - Reverse recovery time; enables >100 kHz switching frequencies with minimal switching loss and EMI
V_F	0.975 V @ 16 A, 25°C - Low forward voltage drop reduces conduction loss and improves system efficiency
R_θJC	1.3 °C/W - Junction-to-case thermal resistance; allows direct mounting to heatsink for effective thermal management
C_J	130 pF @ 1 MHz, 4.0 V - Junction capacitance impacts snubber design and high-frequency ringing behavior

Pinout & Package

Package: ITO-220AC - 3-terminal through-hole molded package with matte tin-plated leads, UL 94V-0 rated compound, and polarity marking per device body.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Forward current entry point	Connected to high-side switching node (e.g., MOSFET drain) in freewheeling path
Cathode (K)	Forward current exit point	Connected to output rail or ground return; electrically tied to metal tab for thermal conduction
Metal Tab (Case)	Thermal and electrical connection to cathode	Must be electrically isolated from heatsink unless circuit design requires cathode tie; provides primary heat path

Key Features

Feature	Design Value
Super fast recovery (t_rr ≤ 35 ns)	Enables high-frequency (>100 kHz) operation in SMPS with minimized reverse recovery loss and EMI generation
Glass passivated junction	Provides long-term reliability and moisture resistance in automotive and industrial environments
Low forward voltage (V_F = 0.975 V)	Reduces power dissipation by ~15% vs. standard fast rectifiers at 16 A, lowering thermal design burden
High surge rating (I_FSM = 200 A)	Withstands inrush and fault currents in DC-DC converters without degradation or failure
UL Recognized (E-326243)	Validates safety compliance for end-equipment certification in commercial and industrial power systems

Applications

DC–DC Converters	Switching Inverters
Use Scenario: Secondary-side synchronous rectification in isolated 48 V–12 V buck-derived converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during high-side switch off-time. Use Value: 0.975 V V_F and 35 ns t_rr reduce conduction and switching losses, improving efficiency by ≥0.8% at full load.	Use Scenario: Output rectification in 3-phase motor drive inverters with regenerative braking. IC Role / Device Role / Timing Role: Unidirectional current clamp protecting IGBTs during inductive kickback events. Use Value: 200 A I_FSM withstands regenerative surges; 1.3 °C/W R_θJC enables direct heatsink mounting for thermal stability.
Freewheeling Circuits	Industrial Power Supplies
Use Scenario: Inductor current recirculation path in step-down regulators powering FPGA or ASIC core rails. IC Role / Device Role / Timing Role: Fast-recovery path preventing voltage overshoot when PWM switch turns off. Use Value: 35 ns t_rr limits reverse recovery charge (Q_rr) to <15 nC, minimizing voltage spikes and gate driver stress.	Use Scenario: Input bridge or output rectification in DIN-rail mounted 24 V/48 V industrial PSUs. IC Role / Device Role / Timing Role: Primary rectifying element handling continuous 16 A load with ambient up to 70°C. Use Value: -55°C to +150°C T_J range and AEC-Q101 qualified variant (SFAF1604GH) support extended lifecycle in harsh environments.

DC–DC Converters

Switching Inverters

Use Scenario: Secondary-side synchronous rectification in isolated 48 V–12 V buck-derived converters for telecom and server PSUs.

IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during high-side switch off-time.

Use Value: 0.975 V V_F and 35 ns t_rr reduce conduction and switching losses, improving efficiency by ≥0.8% at full load.

Use Scenario: Output rectification in 3-phase motor drive inverters with regenerative braking.

IC Role / Device Role / Timing Role: Unidirectional current clamp protecting IGBTs during inductive kickback events.

Use Value: 200 A I_FSM withstands regenerative surges; 1.3 °C/W R_θJC enables direct heatsink mounting for thermal stability.

Freewheeling Circuits

Industrial Power Supplies

Use Scenario: Inductor current recirculation path in step-down regulators powering FPGA or ASIC core rails.

IC Role / Device Role / Timing Role: Fast-recovery path preventing voltage overshoot when PWM switch turns off.

Use Value: 35 ns t_rr limits reverse recovery charge (Q_rr) to <15 nC, minimizing voltage spikes and gate driver stress.

Use Scenario: Input bridge or output rectification in DIN-rail mounted 24 V/48 V industrial PSUs.

IC Role / Device Role / Timing Role: Primary rectifying element handling continuous 16 A load with ambient up to 70°C.

Use Value: -55°C to +150°C T_J range and AEC-Q101 qualified variant (SFAF1604GH) support extended lifecycle in harsh environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar super fast rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1602D	200 V V_RRM, 16 A I_F, t_rr = 30 ns, VF = 0.95 V @ 16 A - slightly faster and lower VF, but TO-220AC package has higher R_θJC (1.5 °C/W)	Same freewheeling and SMPS roles; marginally better high-frequency efficiency but requires larger heatsink area	Prefer when t_rr < 30 ns is critical and thermal interface permits higher R_θJC
ON Semi MUR1620CT	200 V V_RRM, dual common-cathode configuration, t_rr = 35 ns, VF = 0.98 V - not single-die, includes internal parallel structure	Designed for dual-output or interleaved converters; unsuitable for single-path freewheeling without redesign	Select only if dual-channel topology is required; otherwise avoid due to pinout and layout mismatch

Compared with STTH1602D and MUR1620CT, the SFAF1604G offers optimal balance of speed, thermal performance (1.3 °C/W), and single-die simplicity - making it preferred for space-constrained, single-rail SMPS where predictable thermal path and layout compatibility are essential.

Availability

SFAF1604G is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for SFAF1604G 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, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.

The SFAF1604G belongs to TSC's Super Fast Rectifier family, engineered specifically for high-efficiency, high-reliability switching power conversion in automotive-grade and industrial-grade applications where thermal robustness and fast recovery are mandatory.

FAQ

What is the maximum junction temperature rating for the SFAF1604G?

The SFAF1604G has a maximum junction temperature (T_J) rating of +150°C, with operational capability down to -55°C. This wide range supports use in under-hood automotive modules and industrial enclosures where ambient temperatures exceed 85°C. Derating curves in the official datasheet define allowable I_F versus case temperature, and the 1.3 °C/W R_θJC enables precise thermal modeling for heatsink selection in the SFAF1604G design.

Is the SFAF1604G AEC-Q101 qualified?

The base SFAF1604G is not AEC-Q101 qualified; however, the variant SFAF1604GH is explicitly qualified per AEC-Q101 Rev D for automotive applications. Both share identical electrical and thermal specifications, but only SFAF1604GH undergoes stress testing including HTGB, TC, and UHAST. For automotive designs requiring qualification evidence, SFAF1604GH must be specified - the SFAF1604G remains suitable for industrial and commercial power systems.

What is the reverse recovery time (t_rr) of the SFAF1604G and how is it measured?

The SFAF1604G has a maximum reverse recovery time (t_rr) of 35 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A per the datasheet test circuit (Fig.6). This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and EMI in high-frequency converters. The 35 ns t_rr is confirmed across production lots and applies to the SFAF1604G at 25°C ambient.

Does the SFAF1604G have a built-in thermal protection feature?

No, the SFAF1604G does not include built-in thermal protection or shutdown circuitry. It is a passive silicon rectifier diode with no active monitoring or control functions. Thermal management relies entirely on external design - including heatsinking, PCB copper area, airflow, and derating per the forward current derating curve. Safe operation of the SFAF1604G requires maintaining junction temperature below +150°C using the published R_θJC = 1.3 °C/W and system-level thermal resistance calculations.

What is the marking code on the SFAF1604G device body?

The SFAF1604G is marked on the device body with "SFAF1604G", followed by a date code (YWW format), factory code "F", and "G" indicating green molding compound. This marking aligns with the ITO-220AC package outline and is visible on the top surface adjacent to the cathode band. No abbreviated or alternate markings apply - the full part number "SFAF1604G" is laser-etched or ink-stamped for traceability and verification of the SFAF1604G in production and field service.

SFAF1604G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-220-2 Full Pack

Packaging:: Tube

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 16A

Voltage - Forward (Vf) (Max) @ If:: 975 mV @ 16 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 200 V

Capacitance @ Vr, F:: 130pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ITO-220AC

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

SFAF1604G FAQ

1.How can I place an order for SFAF1604G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFAF1604G 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 SFAF1604G reliable?

The price and inventory of SFAF1604G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFAF1604G is usually 5 days.

3.What payment methods are accepted for SFAF1604G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFAF1604G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFAF1604G?

SFAF1604G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFAF1604G 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 SFAF1604G?

For technical support, including SFAF1604G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFAF1604G requirements.

6.How does Aetrix verify that SFAF1604G is sourced from the original manufacturer or authorized distributors?

All SFAF1604G 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 SFAF1604G meets industry standards.

7.What is the process for return or replacement of SFAF1604G?

All SFAF1604G units undergo pre-shipment inspection (PSI). If there is an issue with SFAF1604G, 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 SFAF1604G part is unused and in its original packaging.

Return procedure for SFAF1604G:

1.Submit a request within 90 days.

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

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