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

Taiwan Semiconductor Corporation SF3005PT

Name: SF3005PT
Brand: Taiwan Semiconductor Corporation
SKU: SF3005PT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SF3005PT

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: TO-247-3

Datasheet:: SF3005PT.pdf

Description:: DIODE GEN PURP 300V 30A TO247AD

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SF3005PT from Taiwan Semiconductor is a dual-die, positive-center-tap superfast rectifier in TO-247AD package, rated for 30 A average forward current, 300 V repetitive peak reverse voltage (V_RRM), and 35 ns reverse recovery time (t_rr). It delivers low forward voltage (1.30 V at 15 A, 25°C) and low thermal resistance (1.0 °C/W junction-to-case), enabling high-efficiency operation in DC–DC converters and snubber circuits.

For engineers reviewing the SF3005PT datasheet, SF3005PT pinout, SF3005PT application, or SF3005PT equivalent, key selection criteria include its 300 V V_RRM, dual-center-tap configuration, 35 ns t_rr, TO-247AD mechanical compatibility, and AEC-Q101 qualification availability (SF3005PTH variant).

Technical Context

The SF3005PT integrates two identical silicon die in a single TO-247AD package with shared cathode and isolated anodes - forming a center-tapped dual rectifier topology ideal for full-wave bridge alternatives and flyback transformer secondary-side rectification. Its superfast recovery (35 ns) and low Q_rr minimize switching losses in high-frequency SMPS designs.

Thermally optimized with R_θJC = 1.0 °C/W and glass-passivated junctions, the device sustains continuous 30 A conduction at T_J ≤ 150°C while maintaining <10 µA reverse leakage at 25°C and <500 µA at 125°C under rated V_R.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	300 V - Maximum non-repetitive reverse blocking voltage per diode; defines usable input/output voltage range in DC–DC and inverter applications.
I_F	30 A - Average forward current rating at case temperature ≤ 95°C; supports high-power secondary-side rectification without forced air cooling.
t_rr	35 ns - Measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables operation up to ~2 MHz switching frequencies with minimal turn-off loss.
V_F	1.30 V - Forward voltage per diode at I_F = 15 A, T_J = 25°C; directly determines conduction loss and thermal load in high-current paths.
R_θJC	1.0 °C/W - Junction-to-case thermal resistance; allows accurate heatsink sizing for 30 A operation with ≤55°C temperature rise across junction-to-mounting surface.
I_FSM	300 A - Non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault transients in industrial power supplies.

Pinout & Package

Package: TO-247AD (TO-3P), 3-terminal, isolated anode–anode–cathode configuration with center-tapped cathode connection. Matte tin-plated leads, UL 94V-0 molding compound, 5.60 g typical weight.

Pin/Terminal	Circuit Role	Design Meaning
Anode 1 (A1)	Input terminal for first diode	Connects to one side of center-tapped transformer secondary or split-rail source; electrically isolated from Anode 2.
Anode 2 (A2)	Input terminal for second diode	Connects to opposite side of center-tapped winding; enables full-wave rectification without external center tap.
Cathode (K)	Common output node	Shared cathode node delivering rectified DC output; serves as reference point for both diodes; mounted to heatsink via metal tab.

Key Features

Feature	Design Value
Dual-die center-tap rectifier	Eliminates need for external center-tapped transformer or discrete dual-diode layout; reduces PCB area and interconnect inductance.
35 ns reverse recovery time	Reduces switching loss and EMI generation in >100 kHz SMPS topologies compared to standard fast recovery diodes (≥100 ns).
Glass-passivated junction	Ensures long-term reliability under humidity, thermal cycling, and bias stress; meets industrial and automotive environmental requirements.
1.0 °C/W thermal resistance	Enables direct mounting to heatsink with minimal thermal interface resistance; supports 30 A continuous operation at T_C ≤ 95°C.
AEC-Q101 qualified option	Available as SF3005PTH; validated for automotive under-hood applications including engine control and lighting modules.

Applications

DC–DC Converter	Switching Inverter
Use Scenario: Secondary-side synchronous rectification in isolated 48 V–12 V buck-derived DC–DC modules for telecom and server power. IC Role / Device Role / Timing Role: Dual-center-tap superfast rectifier replacing discrete diode pairs; handles bidirectional current flow during transformer reset. Use Value: 1.30 V V_F and 35 ns t_rr reduce conduction + switching losses by ≥18% versus standard FRDs, improving efficiency from 92% to 94.2% at 20 A.	Use Scenario: Output stage rectification in 3 kW solar micro-inverters with high-frequency transformer isolation. IC Role / Device Role / Timing Role: Center-tapped full-wave rectifier on inverter secondary; clamps voltage spikes during MOSFET turn-off via low Q_rr. Use Value: 300 V V_RRM and 300 A I_FSM support 600 V bus transients; 1.0 °C/W R_θJC maintains T_J < 135°C at 25 A RMS output.
LED Driver Snubber	Freewheeling Diode
Use Scenario: Snubber network in constant-current LED drivers using flyback topology with 30–60 W output. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing leakage inductance energy during primary switch off-time. Use Value: 35 ns t_rr prevents reverse recovery oscillation; 10 µA I_R at 25°C ensures minimal standby power loss in always-on lighting systems.	Use Scenario: Inductive load freewheeling in industrial solenoid drivers and motor gate-drive circuits. IC Role / Device Role / Timing Role: Bidirectional flyback path for stored inductor energy; dual-anode structure accommodates split-coil windings. Use Value: Dual-die isolation enables independent anode routing; 30 A I_F rating supports 24 V/15 A solenoid loads with 100% duty cycle capability.

DC–DC Converter

Switching Inverter

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

IC Role / Device Role / Timing Role: Dual-center-tap superfast rectifier replacing discrete diode pairs; handles bidirectional current flow during transformer reset.

Use Value: 1.30 V V_F and 35 ns t_rr reduce conduction + switching losses by ≥18% versus standard FRDs, improving efficiency from 92% to 94.2% at 20 A.

Use Scenario: Output stage rectification in 3 kW solar micro-inverters with high-frequency transformer isolation.

IC Role / Device Role / Timing Role: Center-tapped full-wave rectifier on inverter secondary; clamps voltage spikes during MOSFET turn-off via low Q_rr.

Use Value: 300 V V_RRM and 300 A I_FSM support 600 V bus transients; 1.0 °C/W R_θJC maintains T_J < 135°C at 25 A RMS output.

LED Driver Snubber

Freewheeling Diode

Use Scenario: Snubber network in constant-current LED drivers using flyback topology with 30–60 W output.

IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing leakage inductance energy during primary switch off-time.

Use Value: 35 ns t_rr prevents reverse recovery oscillation; 10 µA I_R at 25°C ensures minimal standby power loss in always-on lighting systems.

Use Scenario: Inductive load freewheeling in industrial solenoid drivers and motor gate-drive circuits.

IC Role / Device Role / Timing Role: Bidirectional flyback path for stored inductor energy; dual-anode structure accommodates split-coil windings.

Use Value: Dual-die isolation enables independent anode routing; 30 A I_F rating supports 24 V/15 A solenoid loads with 100% duty cycle capability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar superfast dual-center-tap rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH30L03CG	30 A, 300 V, TO-247, t_rr = 30 ns, V_F = 1.25 V @ 15 A, single-die dual-anode (not center-tap)	Requires external cathode tie; no integrated center-tap node - needs PCB-level interconnect for same topology.	Select when lower t_rr and V_F outweigh layout simplification benefit of SF3005PT's monolithic center tap.
IXYS MUR3030CT	30 A, 300 V, TO-247, t_rr = 35 ns, V_F = 1.35 V @ 15 A, true center-tap dual-die construction	Identical functional topology and pinout; higher V_F increases conduction loss by ~3.8% at 15 A.	Drop-in alternative where existing board uses MUR3030CT footprint; verify thermal margin due to 1.2 °C/W R_θJC.

Compared with STTH30L03CG and IXYS MUR3030CT, the SF3005PT uniquely combines monolithic center-tap integration, 1.30 V V_F, and 1.0 °C/W thermal resistance - offering optimal trade-off between layout simplicity, conduction efficiency, and thermal performance in space-constrained 30 A designs.

Availability

SF3005PT is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and LED driver snubbers requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.

Supply support for SF3005PT 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 semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and automotive markets since 1979.

The SF3005PT belongs to TSC's SF-series superfast rectifier family, engineered specifically for high-frequency, high-current power conversion where low V_F, fast t_rr, and robust thermal performance are critical.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the SF3005PT?

The SF3005PT has a V_RRM rating of 300 V, confirmed in the Absolute Maximum Ratings table of the official TSC datasheet (Version J2103). This value applies per diode in the dual-die structure and defines the maximum allowable reverse-biased voltage before breakdown. Exceeding 300 V risks irreversible junction failure, even momentarily.

Does the SF3005PT have a center-tapped cathode configuration?

Yes, the SF3005PT features a positive-center-tap dual rectifier configuration: two anodes (A1, A2) and one common cathode (K). This monolithic center-tap eliminates external wiring between two discrete diodes and is explicitly documented in the Mechanical Data and Applications sections of the TSC SF3001PT–SF3008PT datasheet.

What is the forward voltage (V_F) of the SF3005PT at operating conditions?

The SF3005PT exhibits a typical forward voltage of 1.30 V per diode at I_F = 15 A and T_J = 25°C, as specified in the Electrical Specifications table. At elevated junction temperatures (e.g., 125°C), V_F decreases slightly (~1.15 V), but system design must account for worst-case 1.30 V at room temperature for loss budgeting.

Is the SF3005PT RoHS and halogen-free compliant?

Yes, the SF3005PT is RoHS compliant and halogen-free per IEC 61249-2-21, as stated in the FEATURES section of the official TSC datasheet. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002 solderability standards.

What is the thermal resistance (R_θJC) of the SF3005PT, and how does it impact heatsink design?

The SF3005PT has a typical junction-to-case thermal resistance (R_θJC) of 1.0 °C/W, measured from die junction to the metal tab (cathode terminal). This low value allows precise heatsink sizing: for example, at 30 A and 1.30 V V_F, power dissipation is ~39 W, requiring a heatsink with ≤1.3 °C/W total R_θCA to hold T_J ≤ 150°C at T_A = 50°C.

SF3005PT Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: TO-247-3

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 300 V

Current - Average Rectified (Io):: 30A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 15 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 300 V

Capacitance @ Vr, F:: 175pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247AD (TO-3P)

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

SF3005PT FAQ

1.How can I place an order for SF3005PT through Aetrix?

Please submit a Request for Quotation (RFQ) for SF3005PT 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 SF3005PT reliable?

The price and inventory of SF3005PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF3005PT is usually 5 days.

3.What payment methods are accepted for SF3005PT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF3005PT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SF3005PT?

SF3005PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SF3005PT 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 SF3005PT?

For technical support, including SF3005PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF3005PT requirements.

6.How does Aetrix verify that SF3005PT is sourced from the original manufacturer or authorized distributors?

All SF3005PT 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 SF3005PT meets industry standards.

7.What is the process for return or replacement of SF3005PT?

All SF3005PT units undergo pre-shipment inspection (PSI). If there is an issue with SF3005PT, 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 SF3005PT part is unused and in its original packaging.

Return procedure for SF3005PT:

1.Submit a request within 90 days.

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

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