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

Taiwan Semiconductor Corporation SFT13G A1G

Name: SFT13G A1G
Brand: Taiwan Semiconductor Corporation
SKU: SFT13G A1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFT13G A1G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: T-18, Axial

Datasheet:: SFT13G A1G.pdf

Description:: DIODE GEN PURP 150V 1A TS-1

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SFT13G from Taiwan Semiconductor is a 1 A, 150 V repetitive peak reverse voltage super fast rectifier diode in TS-1 package, featuring 35 ns reverse recovery time, 0.95 V forward voltage at 1 A and 25°C, and 20 pF junction capacitance at 1 MHz/4.0 V - used in DC-DC converters and freewheeling paths in switching power supplies.

For engineers reviewing the SFT13G datasheet, SFT13G pinout, SFT13G application, or SFT13G equivalent, key selection criteria include V_RRM = 150 V, I_F = 1 A, t_rr = 35 ns, V_F = 0.95 V (at 1 A, 25°C), and TS-1 package compatibility with high-density board layouts requiring low-loss, fast-recovery rectification.

Technical Context

The SFT13G is a single-die, planar passivated silicon super fast rectifier optimized for high-frequency switching applications. Its 35 ns reverse recovery time and 20 pF junction capacitance enable efficient operation in SMPS operating up to several hundred kHz, while its 150 V V_RRM rating supports mid-voltage secondary-side rectification.

Thermal performance is defined by R_θJA = 100°C/W, and it operates across –55°C to +150°C junction temperature range. The device uses pure tin-plated leads compliant with J-STD-002 and passes JESD201 Class 2 whisker testing, supporting lead-free reflow assembly.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - maximum non-repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling clamp circuits
I_F	1 A continuous average forward current - sets thermal design margin for PCB copper area and ambient temperature derating
t_rr	35 ns - measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables low switching loss in 100–500 kHz converters
V_F	0.95 V at I_F = 1 A, T_J = 25°C - directly determines conduction loss and thermal rise in high-duty-cycle operation
C_J	20 pF at 1 MHz, V_R = 4.0 V - impacts EMI generation and snubber sizing in high-dV/dt switching nodes
I_FSM	30 A peak surge current (8.3 ms half-sine) - supports inrush and transient overload tolerance without failure

Pinout & Package

TS-1 package: surface-mount, single-anode/single-cathode configuration with cathode band marking; molded epoxy case meeting UL 94V-0; 0.200 g typical weight; tin-plated leads for RoHS-compliant soldering.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck freewheel path); polarity must align with cathode band
Cathode	Forward current exit / reverse blocking terminal	Connected to higher-potential rail (e.g., output capacitor positive); cathode band identifies this terminal on top marking

Key Features

Feature	Design Value
Super fast recovery (t_rr = 35 ns)	Reduces switching losses and EMI in high-frequency DC-DC converters vs. standard rectifiers (t_rr > 100 ns)
Low forward voltage (V_F = 0.95 V @ 1 A)	Lowers conduction loss by ~15% compared to 1.1 V alternatives at same current, improving efficiency in 5–24 V output rails
TS-1 surface-mount package	Enables automated placement and compact layout; footprint compatible with industry-standard 2.5 mm × 1.3 mm land pattern
150°C max junction temperature	Supports operation in thermally constrained environments (e.g., enclosed industrial power modules) without forced cooling

Applications

DC-DC Converter Secondary Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Used as output rectifier in isolated flyback or forward converter delivering 12 V/1 A to industrial control logic. IC Role / Device Role / Timing Role: Unidirectional current valve conducting during transformer reset phase; blocks reverse voltage during primary switch ON time. Use Value: 35 ns t_rr minimizes reverse recovery charge loss, improving full-load efficiency by ~0.8% over standard fast rectifiers.	Use Scenario: Placed across inductive load (e.g., solenoid driver) in H-bridge inverter to recirculate current during PWM off-time. IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance return path for inductive kickback; conducts only during dead-time intervals. Use Value: 0.95 V V_F limits voltage drop across diode during conduction, reducing heat generation and enabling smaller heatsinking.
AC-DC Adapter Output Stage	Automotive Body Control Module Power Supply
Use Scenario: Final-stage rectifier in 5 V/1 A USB-C adapter secondary side, followed by LC filtering. IC Role / Device Role / Timing Role: Converts transformer AC output to unidirectional pulsating DC; operates continuously under steady-state load. Use Value: 20 pF C_J reduces high-frequency noise coupling into output filter, easing EMI compliance testing.	Use Scenario: Input rectifier for 12 V-to-5 V buck converter powering microcontroller and CAN transceiver in BCM. IC Role / Device Role / Timing Role: Protects downstream regulator from reverse polarity and provides input rectification in dual-supply redundancy schemes. Use Value: AEC-Q101 qualification (available in SFT13GH variant) ensures reliability under automotive thermal cycling and vibration stress.

DC-DC Converter Secondary Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Used as output rectifier in isolated flyback or forward converter delivering 12 V/1 A to industrial control logic.

IC Role / Device Role / Timing Role: Unidirectional current valve conducting during transformer reset phase; blocks reverse voltage during primary switch ON time.

Use Value: 35 ns t_rr minimizes reverse recovery charge loss, improving full-load efficiency by ~0.8% over standard fast rectifiers.

Use Scenario: Placed across inductive load (e.g., solenoid driver) in H-bridge inverter to recirculate current during PWM off-time.

IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance return path for inductive kickback; conducts only during dead-time intervals.

Use Value: 0.95 V V_F limits voltage drop across diode during conduction, reducing heat generation and enabling smaller heatsinking.

AC-DC Adapter Output Stage

Automotive Body Control Module Power Supply

Use Scenario: Final-stage rectifier in 5 V/1 A USB-C adapter secondary side, followed by LC filtering.

IC Role / Device Role / Timing Role: Converts transformer AC output to unidirectional pulsating DC; operates continuously under steady-state load.

Use Value: 20 pF C_J reduces high-frequency noise coupling into output filter, easing EMI compliance testing.

Use Scenario: Input rectifier for 12 V-to-5 V buck converter powering microcontroller and CAN transceiver in BCM.

IC Role / Device Role / Timing Role: Protects downstream regulator from reverse polarity and provides input rectification in dual-supply redundancy schemes.

Use Value: AEC-Q101 qualification (available in SFT13GH variant) ensures reliability under automotive thermal cycling and vibration stress.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06U (STMicroelectronics)	V_RRM = 600 V, t_rr = 35 ns, V_F = 0.97 V @ 1 A, SOD-123FL package	Higher voltage rating; larger package footprint (3.7 mm × 1.7 mm vs. TS-1's 2.5 mm × 1.3 mm)	Select when >150 V blocking or legacy SOD-123FL footprint is required; not pin-compatible with TS-1
ES1J (ON Semiconductor)	V_RRM = 600 V, t_rr = 35 ns, V_F = 0.95 V @ 1 A, SMA package	Same V_F and t_rr, but 600 V rating and SMA outline (4.5 mm × 2.7 mm)	Choose for higher voltage margin or existing SMA layout; requires PCB redesign due to larger size and different pad geometry

Compared with STTH1L06U and ES1J, the SFT13G offers optimal balance of 150 V rating, ultra-compact TS-1 footprint, and verified 35 ns recovery - making it preferred for space-constrained 12–24 V industrial DC-DC designs where voltage headroom is limited and thermal density is critical.

Availability

SFT13G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.

Supply support for SFT13G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, MOSFETs, and IGBTs, with global distribution and AEC-Q101 qualified product lines.

The SFT13G belongs to TSC's SFT1xG super fast rectifier family, engineered specifically for high-efficiency, high-frequency switching power supplies where low V_F, fast t_rr, and robust surge capability are essential.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the SFT13G?

The SFT13G has a V_RRM of 150 V, meaning it can reliably block up to 150 V of reverse voltage in repetitive operation. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2104) and defines the upper limit for safe use in freewheeling or output rectification circuits without avalanche breakdown.

What is the forward voltage (V_F) of the SFT13G at rated current?

The SFT13G exhibits a typical forward voltage of 0.95 V at 1 A forward current and 25°C junction temperature. This value is specified in the Electrical Specifications table under "Forward voltage" for SFT13G, and is critical for calculating conduction losses and thermal design in continuous-duty applications like DC-DC output stages.

Does the SFT13G have AEC-Q101 qualification?

The base SFT13G is not AEC-Q101 qualified; however, the variant SFT13GH (with 'H' suffix) is explicitly qualified per AEC-Q101. Per the Ordering Information section, 'H' denotes AEC-Q101 qualification, and the SFT13GH shares identical electrical specs and TS-1 packaging - making it the recommended choice for automotive body electronics or under-hood power supplies.

What is the reverse recovery time (t_rr) of the SFT13G and how is it tested?

The SFT13G has a maximum reverse recovery time of 35 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, as stated in the Electrical Specifications table. This test method ensures consistency with industry-standard super fast rectifier characterization and reflects real-world switching behavior in high-frequency converters.

What package type does the SFT13G use and what are its key mechanical features?

The SFT13G uses the TS-1 surface-mount package: a compact, RoHS-compliant outline measuring approximately 2.5 mm × 1.3 mm, with pure tin-plated leads solderable per J-STD-002, UL 94V-0 molding compound, and cathode polarity indicated by a visible band. Its 0.200 g mass and JESD201 Class 2 whisker resistance support reliable automated assembly in high-volume production.

SFT13G A1G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: T-18, Axial

Packaging:: Tape & Box (TB)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 150 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 950 mV @ 1 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 150 V

Capacitance @ Vr, F:: 20pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TS-1

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

SFT13G A1G FAQ

1.How can I place an order for SFT13G A1G through Aetrix?

Please submit a Request for Quotation (RFQ) for SFT13G A1G 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 SFT13G A1G reliable?

The price and inventory of SFT13G A1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFT13G A1G is usually 5 days.

3.What payment methods are accepted for SFT13G A1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFT13G A1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFT13G A1G?

SFT13G A1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFT13G A1G 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 SFT13G A1G?

For technical support, including SFT13G A1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFT13G A1G requirements.

6.How does Aetrix verify that SFT13G A1G is sourced from the original manufacturer or authorized distributors?

All SFT13G A1G 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 SFT13G A1G meets industry standards.

7.What is the process for return or replacement of SFT13G A1G?

All SFT13G A1G units undergo pre-shipment inspection (PSI). If there is an issue with SFT13G A1G, 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 SFT13G A1G part is unused and in its original packaging.

Return procedure for SFT13G A1G:

1.Submit a request within 90 days.

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

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