My Inquiry
My Account
Taiwan Semiconductor Corporation SFT17GHA1G
- Part No.:
- SFT17GHA1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
SFT17GHA1G.pdf
- Description:
- DIODE GEN PURP 500V 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:3,762
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SFT17GHA1G from Taiwan Semiconductor is a 1 A, 500 V super fast recovery rectifier diode in TS-1 package, featuring 1.70 V typical forward voltage at 1 A and 25°C, 35 ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SFT17GHA1G datasheet, SFT17GHA1G pinout, SFT17GHA1G application, or SFT17GHA1G equivalent, this device is selected for high-efficiency DC-DC converters, switching inverters requiring low conduction loss and fast commutation, and freewheeling paths where thermal resistance (100°C/W) and surge robustness (30 A IFSM) are critical.
Technical Context
This super fast rectifier uses a single-die planar junction structure optimized for reduced reverse recovery charge and minimized switching losses in high-frequency power conversion topologies. Its 500 V VRRM rating and 150°C maximum junction temperature support operation in demanding industrial and automotive environments.
The device exhibits 10 pF typical junction capacitance at 1 MHz and 4 V reverse bias, enabling stable high-speed switching behavior. Reverse leakage remains ≤5 µA at 25°C and ≤100 µA at 125°C under rated VR, ensuring low standby power dissipation in offline and isolated converter designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 500 V - supports input rectification or freewheeling in 400 V DC bus systems with safety margin |
| IF | 1 A continuous - suitable for low-to-medium power SMPS outputs up to ~15 W at full load |
| VF (typ) | 1.70 V @ 1 A, 25°C - determines conduction loss (1.7 W per diode at full current) |
| trr | 35 ns - enables operation in 100–500 kHz switching converters with minimal recovery-related ringing |
| IFSM | 30 A (8.3 ms half-sine) - withstands startup surges and transient overloads without failure |
| RθJA | 100 °C/W - requires minimal PCB copper area for thermal management in compact layouts |
| IR (max) | 100 µA @ 125°C - ensures low leakage in high-temperature freewheeling applications |
Pinout & Package
TS-1 package: surface-mount, single-ended leadframe with cathode band marking; 0.200 g mass; UL 94V-0 molding compound; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode | Current exit terminal during forward conduction; marked by band | Connected to higher-potential node (e.g., output rail or inductor return) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics including engine control modules and body electronics |
| Super fast recovery (35 ns) | Reduces switching loss and EMI in high-frequency DC-DC stages compared to standard fast rectifiers |
| Low VF (1.70 V typ) | Minimizes conduction loss in 1 A continuous applications, improving efficiency by ~0.5–1.2% vs. 1.9 V alternatives |
| 100°C/W RθJA | Enables direct placement on 1 oz. FR-4 without thermal vias in space-constrained consumer and industrial PCBs |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and global environmental regulations for automotive and industrial shipments |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–12 V at ≤1 A. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC. Use Value: 1.70 V VF and 35 ns trr reduce both conduction and switching losses, increasing overall converter efficiency by ≥0.8% versus standard fast diodes. | Use Scenario: Freewheeling path across inductive loads in half-bridge motor drivers or UPS inverters. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when main switches turn off. Use Value: 30 A IFSM rating handles inductive kickback transients; 100°C/W thermal resistance avoids local hot spots during burst-mode operation. |
| Automotive Body Control Module Power Supply | Industrial Sensor Interface Power Rail |
Use Scenario: Input rectification and hold-up in 12 V automotive BCM auxiliary supplies subjected to load dump and cold crank. IC Role / Device Role / Timing Role: Primary rectifier in unregulated offline stage feeding LDO or buck controller. Use Value: AEC-Q101 qualification ensures reliability across -40°C to +125°C ambient; 500 V VRRM withstands ISO 7637-2 pulse 5a (load dump). | Use Scenario: Auxiliary power rail generation for 4–20 mA loop-powered sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-leakage rectifier in capacitive-input filter supplying isolated signal conditioning circuitry. Use Value: ≤100 µA IR at 125°C prevents excessive capacitor discharge drift; TS-1 footprint enables dense sensor module layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-1EWH05 | Same 500 V VRRM, 1 A IF, but 1.35 V VF (typ) at 1 A; 50 ns trr; DO-214AC package | Higher VF increases conduction loss; slower recovery may limit >200 kHz use | Select if legacy DO-214AC footprint required and efficiency less critical than cost |
| ON Semiconductor MUR105 | 50 V lower VRRM (450 V); same 1 A IF, 1.7 V VF, 35 ns trr; also TS-1 package | Reduced voltage margin may require derating in 400 V bus applications | Select only in systems with verified <400 V peak reverse stress and existing MUR105 BOM |
Compared with VS-1EWH05 and MUR105, the SFT17GHA1G delivers superior voltage margin (500 V), identical speed (35 ns), and automotive qualification-making it optimal for new automotive and industrial designs where reliability and headroom are prioritized over legacy footprint compatibility.
Availability
SFT17GHA1G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and automotive body control modules requiring stable component supply with AEC-Q101 assurance and consistent TS-1 packaging.
Supply support for SFT17GHA1G 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 SFT11G–SFT18G super fast rectifier family is engineered for high-frequency power conversion in automotive and industrial applications, emphasizing low VF, fast trr, and AEC-Q101 compliance without trade-offs in surge robustness or thermal performance.
FAQ
What is the maximum junction temperature rating for SFT17GHA1G?
The SFT17GHA1G has a maximum junction temperature (TJ MAX) of +150°C, validated per AEC-Q101 stress testing. This allows reliable operation in under-hood automotive environments and enclosed industrial enclosures where ambient temperatures reach +105°C, provided thermal design maintains junction temperature below this limit using its 100°C/W RθJA characteristic.
Is SFT17GHA1G pin-compatible with other TS-1 rectifiers like SFT16GHA1G?
Yes, SFT17GHA1G shares identical TS-1 package dimensions, lead pitch, and anode/cathode terminal configuration with all SFT1xGHA1G variants. The only differences are VRRM (500 V vs. 400 V for SFT16GHA1G) and VF (1.70 V vs. 1.30 V), so board-level replacement is mechanically feasible but requires verification of voltage and loss requirements.
Does SFT17GHA1G meet automotive qualification standards?
Yes, the "H" suffix in SFT17GHA1G explicitly denotes AEC-Q101 qualification. This includes stress testing for temperature cycling, humidity bias, high-temperature operating life, and mechanical shock-ensuring suitability for automotive powertrain, chassis, and body electronics applications per industry requirements.
What is the reverse recovery time (trr) specification for SFT17GHA1G?
The SFT17GHA1G has a maximum reverse recovery time (trr) of 35 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is confirmed in the official Taiwan Semiconductor datasheet (Version J2104) and enables efficient operation in switching power supplies operating up to 500 kHz with minimal recovery-related losses.
How does the forward voltage of SFT17GHA1G compare to lower-voltage SFT1xG variants?
SFT17GHA1G specifies 1.70 V typical VF at 1 A and 25°C-higher than SFT15GHA1G (1.30 V) and SFT14GHA1G (0.95 V) due to increased VRRM (500 V vs. 300 V and 200 V). This reflects the inherent trade-off between breakdown voltage and on-state conduction loss in silicon rectifier design.
SFT17GHA1G 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):
- 500 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 500 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
SFT17GHA1G FAQ
1.How can I place an order for SFT17GHA1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SFT17GHA1G 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 SFT17GHA1G reliable?
The price and inventory of SFT17GHA1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SFT17GHA1G is usually 5 days.
3.What payment methods are accepted for SFT17GHA1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SFT17GHA1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SFT17GHA1G?
SFT17GHA1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SFT17GHA1G 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 SFT17GHA1G?
For technical support, including SFT17GHA1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SFT17GHA1G requirements.
6.How does Aetrix verify that SFT17GHA1G is sourced from the original manufacturer or authorized distributors?
All SFT17GHA1G 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 SFT17GHA1G meets industry standards.
7.What is the process for return or replacement of SFT17GHA1G?
All SFT17GHA1G units undergo pre-shipment inspection (PSI). If there is an issue with SFT17GHA1G, 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 SFT17GHA1G part is unused and in its original packaging.
Return procedure for SFT17GHA1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SFT17GHA1G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
