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

Taiwan Semiconductor Corporation SFT15GH

Name: SFT15GH
Brand: Taiwan Semiconductor Corporation
SKU: SFT15GH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SFT15GH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: T-18, Axial

Datasheet:: SFT15GH.pdf

Description:: DIODE GEN PURP 300V 1A TS-1

Quantity:: RFQ Add To RFQ list

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Inventory:4,980

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Product details

Overview

SFT15GH from Taiwan Semiconductor is a 1 A, 300 V repetitive peak reverse voltage (V_RRM) AEC-Q101-qualified super fast rectifier diode in TS-1 package, featuring 35 ns reverse recovery time (t_rr), 1.30 V forward voltage at 1 A and 25°C, and 10 pF junction capacitance at 1 MHz/4.0 V - used in automotive-grade DC-DC converters and freewheeling paths.

For engineers reviewing the SFT15GH datasheet, SFT15GH pinout, SFT15GH application, or SFT15GH equivalent, key selection criteria include its AEC-Q101 qualification, 30 A surge rating (I_FSM), 150°C max junction temperature, TS-1 mechanical compatibility, and low t_rr/V_F trade-off for high-frequency switching efficiency.

Technical Context

The SFT15GH is a single-die, planar passivated silicon super fast rectifier optimized for high-speed switching in automotive power supplies. Its 300 V V_RRM and 35 ns t_rr enable operation in 100–500 kHz SMPS topologies with minimal switching loss.

It delivers 1.30 V V_F at 1 A and 25°C, with thermal resistance R_θJA = 100°C/W, and maintains ≤100 µA reverse leakage at 125°C - supporting reliable operation in under-hood environments where ambient temperatures exceed 105°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	300 V - supports 24 V automotive input rails with ≥3× safety margin against transients
I_F	1 A continuous average forward current - suitable for low-to-mid power DC-DC stages up to ~15 W
t_rr	35 ns - enables efficient operation in >200 kHz switching converters without excessive ringing or EMI
V_F	1.30 V @ 1 A, 25°C - reduces conduction loss vs. standard fast rectifiers (typically 1.5–1.7 V)
C_J	10 pF @ 1 MHz, 4.0 V - minimizes capacitive coupling and dv/dt-induced turn-on in high-side configurations
I_FSM	30 A @ 8.3 ms half-sine - withstands cold-crank and load-dump surges in automotive systems
T_J max	150°C - meets under-hood thermal requirements per AEC-Q101 stress test conditions

Pinout & Package

TS-1 package: molded epoxy case with pure tin-plated leads, polarity indicated by cathode band, UL 94V-0 rated, 0.200 g typical weight, JESD 201 Class 2 whisker compliant.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck freewheel path)
Cathode	Forward current exit / reverse blocking terminal	Marked with band; ties to output rail or ground return; blocks 300 V reverse bias

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive use including temperature cycling, HTRB, and ESD per stress test plan
Super fast recovery (35 ns)	Reduces switching loss and EMI in high-frequency converters vs. standard fast rectifiers (>100 ns)
Low forward voltage (1.30 V)	Lowers conduction loss by ~15% compared to 1.5 V alternatives at 1 A, improving thermal margin
10 pF junction capacitance	Minimizes displacement current during high dv/dt transitions, reducing gate drive disturbance
TS-1 package with tin plating	Enables lead-free reflow soldering per J-STD-002; compact footprint (4.5 × 2.7 mm) for space-constrained layouts

Applications

Automotive DC-DC Converters	Industrial Switch-Mode Inverters
Use Scenario: 12 V to 5 V/3.3 V step-down converter in engine control units (ECUs) exposed to load dump and cold crank. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or non-synchronous buck topology, conducting during low-side switch off-time. Use Value: 300 V V_RRM and 30 A I_FSM ensure robustness against ISO 7637-2 pulses; 35 ns t_rr prevents cross-conduction loss in quasi-synchronous designs.	Use Scenario: Output rectification in 24 V input industrial UPS inverters operating at 250 kHz switching frequency. IC Role / Device Role / Timing Role: High-speed output rectifier handling bidirectional energy flow during regeneration cycles. Use Value: 10 pF C_J and 1.30 V V_F jointly reduce switching + conduction losses, enabling >92% efficiency at full load.
Freewheeling in BLDC Motor Drivers	High-Frequency AC-DC Adapters
Use Scenario: Freewheel path for 3-phase BLDC gate drivers in electric power steering (EPS) modules. IC Role / Device Role / Timing Role: Clamping diode across motor phase windings, conducting flyback current during PWM dead-time. Use Value: 150°C T_J max and AEC-Q101 qualification guarantee reliability in sealed, thermally isolated EPS housings.	Use Scenario: Secondary-side rectification in compact 65 W laptop adapters using active clamp flyback architecture. IC Role / Device Role / Timing Role: Fast-recovery output rectifier synchronized with primary-side switching edge timing. Use Value: 35 ns t_rr eliminates need for snubbers; low V_F directly improves light-load efficiency per CoC Tier 2 requirements.

Automotive DC-DC Converters

Industrial Switch-Mode Inverters

Use Scenario: 12 V to 5 V/3.3 V step-down converter in engine control units (ECUs) exposed to load dump and cold crank.

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or non-synchronous buck topology, conducting during low-side switch off-time.

Use Value: 300 V V_RRM and 30 A I_FSM ensure robustness against ISO 7637-2 pulses; 35 ns t_rr prevents cross-conduction loss in quasi-synchronous designs.

Use Scenario: Output rectification in 24 V input industrial UPS inverters operating at 250 kHz switching frequency.

IC Role / Device Role / Timing Role: High-speed output rectifier handling bidirectional energy flow during regeneration cycles.

Use Value: 10 pF C_J and 1.30 V V_F jointly reduce switching + conduction losses, enabling >92% efficiency at full load.

Freewheeling in BLDC Motor Drivers

High-Frequency AC-DC Adapters

Use Scenario: Freewheel path for 3-phase BLDC gate drivers in electric power steering (EPS) modules.

IC Role / Device Role / Timing Role: Clamping diode across motor phase windings, conducting flyback current during PWM dead-time.

Use Value: 150°C T_J max and AEC-Q101 qualification guarantee reliability in sealed, thermally isolated EPS housings.

Use Scenario: Secondary-side rectification in compact 65 W laptop adapters using active clamp flyback architecture.

IC Role / Device Role / Timing Role: Fast-recovery output rectifier synchronized with primary-side switching edge timing.

Use Value: 35 ns t_rr eliminates need for snubbers; low V_F directly improves light-load efficiency per CoC Tier 2 requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	600 V V_RRM, 35 ns t_rr, 1.35 V V_F @ 1 A - higher voltage rating but same speed and slightly higher V_F	Used in 48 V telecom PSUs; over-spec'd for 300 V automotive systems	Select when future-proofing for higher bus voltages or needing broader voltage family compatibility
SB130	30 V V_RRM, 35 ns t_rr, 0.85 V V_F - much lower voltage, lower V_F, not AEC-Q101 qualified	Consumer USB PD adapters; unsuitable for automotive transient immunity	Only consider for cost-sensitive, non-automotive, low-voltage (<40 V) applications requiring lowest possible V_F

Compared with STTH1L06S and SB130, the SFT15GH uniquely balances 300 V rating, AEC-Q101 compliance, 35 ns speed, and 1.30 V V_F - making it the only drop-in solution for automotive 24 V DC-DC freewheeling where voltage margin, reliability, and efficiency are simultaneously constrained.

Availability

SFT15GH is available at Aetrix Electronics and suitable for automotive ECUs, industrial UPS inverters, BLDC motor drivers, and high-frequency AC-DC adapters requiring stable component supply with AEC-Q101 assurance and long-term lifecycle support.

Supply support for SFT15GH 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 automotive, industrial, and consumer markets since 1979.

The SFT15GH belongs to TSC's AEC-Q101-qualified super fast rectifier family, engineered specifically for high-reliability automotive power conversion where fast recovery, thermal robustness, and transient immunity are critical.

FAQ

What is the maximum junction temperature rating for the SFT15GH?

The SFT15GH has a maximum junction temperature (T_J) of +150°C, validated per AEC-Q101 stress testing requirements. This allows continuous operation in under-hood automotive environments where ambient temperatures reach 125°C, provided PCB layout and airflow maintain junction temperature below this limit. Thermal design must account for R_θJA = 100°C/W and 1 A forward current dissipation.

Is the SFT15GH pin-compatible with other devices in the SFT1xG series?

Yes, all SFT1xG devices - including SFT15GH - share identical TS-1 package dimensions, anode/cathode pinout, and mechanical footprint. Voltage variants (SFT11G–SFT18G) differ only in V_RRM, V_F, and C_J; thus SFT15GH can be substituted within the same board layout if voltage and performance requirements align.

Does the SFT15GH meet RoHS and halogen-free standards?

Yes, the SFT15GH is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound is UL 94V-0 rated, and terminals are pure tin plated - fully compatible with lead-free reflow soldering processes per J-STD-002. Certificate of Compliance is available upon request from Aetrix Electronics.

What is the reverse recovery time (t_rr) test condition for the SFT15GH?

The SFT15GH reverse recovery time is specified as 35 ns maximum under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, measured per JEDEC standard test circuit. This value is guaranteed across the full operating temperature range and confirms suitability for 200–500 kHz switching applications without added snubber losses.

How does the SFT15GH differ from non-AEC-Q101 versions like SFT15G?

The SFT15GH includes full AEC-Q101 qualification (including HTGB, TC, HTRB, and ESD tests), while SFT15G is not qualified. Both share identical electrical specs and TS-1 packaging, but only SFT15GH is approved for automotive safety-critical systems. For production automotive designs, SFT15GH is mandatory; SFT15G may be used only in non-automotive prototypes or cost-sensitive industrial applications.

SFT15GH Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: T-18, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 1 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 300 V

Capacitance @ Vr, F:: 10pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: TS-1

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

SFT15GH FAQ

1.How can I place an order for SFT15GH through Aetrix?

Please submit a Request for Quotation (RFQ) for SFT15GH 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 SFT15GH reliable?

The price and inventory of SFT15GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFT15GH is usually 5 days.

3.What payment methods are accepted for SFT15GH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFT15GH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SFT15GH?

SFT15GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SFT15GH 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 SFT15GH?

For technical support, including SFT15GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFT15GH requirements.

6.How does Aetrix verify that SFT15GH is sourced from the original manufacturer or authorized distributors?

All SFT15GH 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 SFT15GH meets industry standards.

7.What is the process for return or replacement of SFT15GH?

All SFT15GH units undergo pre-shipment inspection (PSI). If there is an issue with SFT15GH, 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 SFT15GH part is unused and in its original packaging.

Return procedure for SFT15GH:

1.Submit a request within 90 days.

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

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