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

Taiwan Semiconductor Corporation SF43GHR0G

Name: SF43GHR0G
Brand: Taiwan Semiconductor Corporation
SKU: SF43GHR0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SF43GHR0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SF43GHR0G.pdf

Description:: DIODE GEN PURP 150V 4A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:2,857

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Product details

Overview

SF43GHR0G from Taiwan Semiconductor is a 150 V, 4 A super fast recovery rectifier diode in DO-201AD package, featuring 35 ns reverse recovery time, 1.0 V forward voltage at 4 A, and 125 A surge capability - deployed in DC-DC converters and switching inverters for high-efficiency power conversion.

For engineers reviewing the SF43GHR0G datasheet, SF43GHR0G pinout, SF43GHR0G application, or SF43GHR0G equivalent, key selection criteria include V_RRM = 150 V, I_F = 4 A, t_rr = 35 ns, V_F = 1.0 V @ 4 A, and DO-201AD thermal performance (R_θJA = 25 °C/W) under industrial ambient conditions.

Technical Context

This single-die, axial-leaded super fast rectifier uses optimized epitaxial construction to achieve low forward voltage and rapid carrier recombination. Its 35 ns reverse recovery time enables operation in high-frequency switching topologies up to several hundred kHz without excessive switching loss.

The device operates across –55 °C to +150 °C junction temperature range with 125 A non-repetitive surge rating (8.3 ms half-sine), and exhibits 100 pF junction capacitance at 1 MHz / 4 V reverse bias - supporting stable high-speed freewheeling and snubberless designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - maximum repetitive reverse voltage; sets upper limit for blocking capability in flyback or buck-boost stages
I_F	4 A - average forward current; defines continuous conduction mode (CCM) output rectification capacity
t_rr	35 ns - reverse recovery time; enables efficient operation in 200–500 kHz SMPS without tail current losses
V_F	1.0 V @ 4 A, 25 °C - forward voltage drop; determines conduction loss (P_cond ≈ 4 W at full load)
R_θJA	25 °C/W - junction-to-ambient thermal resistance; requires ≤ 75 °C ambient for 150 °C max T_J at full I_F
C_J	100 pF @ 1 MHz, 4 V - junction capacitance; influences EMI generation and gate-drive interaction in synchronous layouts
I_FSM	125 A - peak surge current (8.3 ms); supports cold-start and overload transients in automotive-grade supplies

Pinout & Package

DO-201AD axial package with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and pass JESD201 Class 2 whisker testing. Weight: ~1.10 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in boost, secondary winding in flyback)
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to output rail or filter capacitor positive; blocks reverse voltage up to 150 V

Key Features

Feature	Design Value
Super fast recovery (t_rr = 35 ns)	Reduces switching loss and EMI in high-frequency DC-DC converters operating above 200 kHz
Low V_F = 1.0 V @ 4 A	Lowers conduction loss by ~15% vs. standard fast rectifiers, improving efficiency in 12–48 V output stages
DO-201AD with UL 94V-0 molding	Enables through-hole mounting in industrial and automotive PCBs requiring flame-retardant compliance
125 A I_FSM surge rating	Withstands inrush and short-circuit events without failure in unregulated offline supplies
AEC-Q101 qualified option (SF43GHR0G)	Validated for automotive power modules where reliability under thermal cycling and vibration is critical

Applications

DC-DC Converters	Switching Inverters
Use Scenario: Secondary-side rectification in isolated 48 V–12 V buck-derived telecom or server PSUs. IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer during switch off-time; replaces slower diodes to reduce switching loss. Use Value: 35 ns t_rr and 1.0 V V_F cut total rectifier loss by ≥20% vs. standard FR107 at 300 kHz, improving full-load efficiency to >92%.	Use Scenario: Freewheeling path in motor drive half-bridge outputs for HVAC compressors and EV auxiliary inverters. IC Role / Device Role / Timing Role: Clamps inductive kickback during PWM dead-time; conducts reverse recovery current without oscillation. Use Value: 125 A I_FSM and 150 V V_RRM support 24 V–48 V bus systems with 2× overvoltage margin and robust fault tolerance.
Freewheeling Diodes	Switching Mode Power Supplies
Use Scenario: Inductor current recirculation in synchronous buck controllers powering FPGA or ASIC core rails. IC Role / Device Role / Timing Role: Provides low-loss return path when high-side MOSFET is off; complements control IC timing with predictable t_rr. Use Value: 100 pF C_J minimizes capacitive coupling into gate drivers, reducing false triggering risk in dense layouts.	Use Scenario: Output rectification in 65 W laptop adapters using quasi-resonant flyback topology. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; withstands 150 V reflected spikes during demagnetization. Use Value: AEC-Q101 qualification (SF43GHR0G) ensures long-term reliability under 85 °C ambient and 1000-cycle thermal stress.

DC-DC Converters

Switching Inverters

Use Scenario: Secondary-side rectification in isolated 48 V–12 V buck-derived telecom or server PSUs.

IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer during switch off-time; replaces slower diodes to reduce switching loss.

Use Value: 35 ns t_rr and 1.0 V V_F cut total rectifier loss by ≥20% vs. standard FR107 at 300 kHz, improving full-load efficiency to >92%.

Use Scenario: Freewheeling path in motor drive half-bridge outputs for HVAC compressors and EV auxiliary inverters.

IC Role / Device Role / Timing Role: Clamps inductive kickback during PWM dead-time; conducts reverse recovery current without oscillation.

Use Value: 125 A I_FSM and 150 V V_RRM support 24 V–48 V bus systems with 2× overvoltage margin and robust fault tolerance.

Freewheeling Diodes

Switching Mode Power Supplies

Use Scenario: Inductor current recirculation in synchronous buck controllers powering FPGA or ASIC core rails.

IC Role / Device Role / Timing Role: Provides low-loss return path when high-side MOSFET is off; complements control IC timing with predictable t_rr.

Use Value: 100 pF C_J minimizes capacitive coupling into gate drivers, reducing false triggering risk in dense layouts.

Use Scenario: Output rectification in 65 W laptop adapters using quasi-resonant flyback topology.

IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; withstands 150 V reflected spikes during demagnetization.

Use Value: AEC-Q101 qualification (SF43GHR0G) ensures long-term reliability under 85 °C ambient and 1000-cycle thermal 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
STTH4L06D	V_RRM = 600 V, t_rr = 30 ns, V_F = 1.15 V @ 4 A, TO-220AC package	Higher voltage rating but larger footprint and higher V_F; suited for universal input offline SMPS	Select when >400 V blocking is required and board space allows TO-220 mounting
ON Semi MUR460E	V_RRM = 600 V, t_rr = 35 ns, V_F = 1.25 V @ 4 A, DO-201AD package	Same package and t_rr, but higher V_F and no AEC-Q101 option; RoHS-compliant only	Use where cost sensitivity outweighs 0.25 V V_F penalty and automotive qualification is not needed

Compared with STTH4L06D and MUR460E, SF43GHR0G delivers optimal balance of 150 V rating, 1.0 V V_F, DO-201AD form factor, and AEC-Q101 validation - making it preferred for space-constrained, efficiency-critical 48 V automotive and industrial DC-DC stages.

Availability

SF43GHR0G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, automotive-grade reliability, and consistent DO-201AD lead-forming.

Supply support for SF43GHR0G 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, automotive, and computing markets since 1979.

The SF4xG series was designed specifically for high-frequency, high-reliability power conversion - targeting efficiency-critical rectification in compact, thermally constrained DC-DC and inverter applications.

FAQ

What is the maximum junction temperature rating for SF43GHR0G?

The SF43GHR0G has a maximum junction temperature (T_J) of +150 °C and a minimum of –55 °C. This rating is validated across its full operating current range and supports use in under-hood automotive environments and sealed industrial enclosures where ambient temperatures reach 85–105 °C. Derating curves confirm 4 A average current is sustainable up to 75 °C ambient with standard PCB copper area.

Is SF43GHR0G pin-compatible with other DO-201AD rectifiers like SF42G or SF44G?

Yes, SF43GHR0G shares identical DO-201AD mechanical dimensions, lead spacing, and cathode-band polarity marking with SF42G and SF44G. All three use the same axial package and soldering profile, allowing direct substitution on existing footprints - though V_RRM (150 V), V_F, and leakage differ per variant, so electrical validation is required.

Does SF43GHR0G meet AEC-Q101 requirements for automotive use?

Yes, the "HR0G" suffix in SF43GHR0G explicitly denotes AEC-Q101 qualification. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature reverse bias - confirming suitability for automotive power modules, body control units, and ADAS subsystems where reliability is mission-critical.

What is the reverse recovery time (t_rr) test condition for SF43GHR0G?

The SF43GHR0G reverse recovery time of 35 ns is measured under standardized conditions: I_F = 0.5 A forward bias, I_R = 1.0 A reverse step, and I_rr = 0.25 A peak reverse recovery current. This reflects real-world behavior in hard-switched topologies and is verified per JEDEC JESD24-10 methodology.

How does the junction capacitance of SF43GHR0G affect EMI in high-frequency designs?

SF43GHR0G exhibits 100 pF junction capacitance at 1 MHz and 4 V reverse bias. In 300–500 kHz SMPS, this value interacts with layout parasitics to influence high-frequency common-mode noise; keeping trace lengths short and separating from gate loops reduces radiated emissions. It is 20% lower than legacy FR107 devices, aiding EMI filter simplification.

SF43GHR0G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

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

Current - Average Rectified (Io):: 4A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 4 A

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

Reverse Recovery Time (trr):: 35 ns

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

Capacitance @ Vr, F:: 100pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

SF43GHR0G FAQ

1.How can I place an order for SF43GHR0G through Aetrix?

Please submit a Request for Quotation (RFQ) for SF43GHR0G 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 SF43GHR0G reliable?

The price and inventory of SF43GHR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF43GHR0G is usually 5 days.

3.What payment methods are accepted for SF43GHR0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF43GHR0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SF43GHR0G?

SF43GHR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SF43GHR0G 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 SF43GHR0G?

For technical support, including SF43GHR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF43GHR0G requirements.

6.How does Aetrix verify that SF43GHR0G is sourced from the original manufacturer or authorized distributors?

All SF43GHR0G 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 SF43GHR0G meets industry standards.

7.What is the process for return or replacement of SF43GHR0G?

All SF43GHR0G units undergo pre-shipment inspection (PSI). If there is an issue with SF43GHR0G, 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 SF43GHR0G part is unused and in its original packaging.

Return procedure for SF43GHR0G:

1.Submit a request within 90 days.

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

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