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

Taiwan Semiconductor Corporation S1JF-T

Name: S1JF-T
Brand: Taiwan Semiconductor Corporation
SKU: S1JF-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S1JF-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: S1JF-T.pdf

Description:: 1A, 600V, STANDARD RECOVERY RECT

Quantity:: RFQ Add To RFQ list

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Inventory:7,500

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Product details

Overview

S1JF-T from Taiwan Semiconductor is a 1 A, 600 V standard surface-mount silicon rectifier diode in SMAF package, featuring glass-passivated junction, low reverse leakage (≤5 µA at 25°C), and 30 A surge capability (8.3 ms); used in DC-DC converters and switching-mode inverters.

For engineers reviewing the S1JF-T datasheet, S1JF-T pinout, S1JF-T application, or S1JF-T equivalent, key selection criteria include rated repetitive peak reverse voltage (600 V), forward voltage (0.94 V max at 1 A/25°C), thermal resistance (R_θJL = 15 °C/W), and RoHS/halogen-free compliance for industrial power conversion designs.

Technical Context

The S1JF-T is a single-die, unidirectional silicon PN junction rectifier optimized for high-efficiency AC-to-DC and DC-to-DC conversion. It operates with a maximum junction temperature of 150°C and supports pulsed forward currents up to 90 A (1.0 ms).

Its glass-passivated chip junction ensures stable reverse characteristics across temperature, while the matte tin-plated SMAF leads meet J-STD-002 solderability and JESD 201 Class 1 whisker requirements - critical for automated SMT assembly and long-term reliability in power supplies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - Maximum repetitive reverse voltage the device blocks without breakdown; defines usable input voltage range in bridge or flyback topologies.
I_F	1 A continuous - Rated average forward current under specified thermal conditions; determines steady-state power handling in rectification paths.
I_FSM (8.3 ms)	30 A - Non-repetitive surge current capability; enables robustness against line transients and startup inrush in SMPS.
V_F @ 1 A, 25°C	0.94 V max - Forward voltage drop directly impacts conduction loss and thermal design; lower V_F improves efficiency vs. higher-voltage variants.
R_θJL	15 °C/W - Junction-to-lead thermal resistance; enables direct PCB copper pad heat sinking without heatsink for moderate-power applications.
I_R @ 600 V, 25°C	5 µA max - Low reverse leakage preserves efficiency in high-impedance bias networks and reduces standby loss in offline converters.

Pinout & Package

Package: SMAF (Surface Mount Axial Flat) - compact, leaded plastic package with cathode band marking; 5 mm × 5 mm Cu pad recommended per JEDEC standards for thermal performance.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to AC input or transformer secondary; polarity must align with circuit topology to avoid reverse conduction.
Cathode (Lead 2)	Forward current exit / reverse blocking terminal	Marked by visible band; ties to output rail or ground return; determines direction of rectified current flow.

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term stability of reverse leakage and breakdown voltage under humidity and thermal cycling stress.
Moisture sensitivity level 1	Eliminates need for dry-pack or baking prior to reflow, reducing manufacturing cost and process complexity.
RoHS and halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS directives; supports environmentally regulated industrial and consumer end equipment.
Junction capacitance (7 pF)	Minimizes high-frequency switching noise and EMI in fast-switching converters operating above 100 kHz.

Applications

AC-DC Adapter Power Supply	DC-DC Buck Converter Input Stage
Use Scenario: Rectifying 50/60 Hz or high-frequency AC from transformer secondary in wall adapters delivering 5–24 V output. IC Role / Device Role / Timing Role: Primary-side uncontrolled rectifier converting AC to pulsating DC before bulk capacitor filtering. Use Value: 600 V V_RRM provides 2× safety margin over 265 V_AC mains peaks; 1 A rating supports up to ~12 W output at 85% efficiency.	Use Scenario: Input rectification in isolated or non-isolated buck-derived topologies using high-frequency AC from MOSFET half-bridge. IC Role / Device Role / Timing Role: Freewheeling or synchronous rectification path depending on control scheme; handles discontinuous conduction mode (DCM) current pulses. Use Value: Low 0.94 V V_F reduces conduction loss during high-duty-cycle operation; 30 A I_FSM withstands transient load steps without failure.
Switch-Mode Inverter Auxiliary Supply	Industrial Sensor Signal Conditioning
Use Scenario: Generating isolated auxiliary 12–15 V rails for gate drivers and logic in motor drive inverters. IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback or forward converter powering control circuitry. Use Value: R_θJL = 15 °C/W allows direct thermal coupling to PCB copper, eliminating discrete heatsinks in space-constrained modules.	Use Scenario: Protection and signal-level rectification in analog front-ends for current/voltage sensing in PLC I/O modules. IC Role / Device Role / Timing Role: Reverse-polarity protection diode and precision half-wave rectifier for sensor excitation signals. Use Value: ≤5 µA reverse leakage prevents measurement drift in µA-range sensing circuits; 7 pF C_J avoids signal distortion at <1 MHz bandwidths.

AC-DC Adapter Power Supply

DC-DC Buck Converter Input Stage

Use Scenario: Rectifying 50/60 Hz or high-frequency AC from transformer secondary in wall adapters delivering 5–24 V output.

IC Role / Device Role / Timing Role: Primary-side uncontrolled rectifier converting AC to pulsating DC before bulk capacitor filtering.

Use Value: 600 V V_RRM provides 2× safety margin over 265 V_AC mains peaks; 1 A rating supports up to ~12 W output at 85% efficiency.

Use Scenario: Input rectification in isolated or non-isolated buck-derived topologies using high-frequency AC from MOSFET half-bridge.

IC Role / Device Role / Timing Role: Freewheeling or synchronous rectification path depending on control scheme; handles discontinuous conduction mode (DCM) current pulses.

Use Value: Low 0.94 V V_F reduces conduction loss during high-duty-cycle operation; 30 A I_FSM withstands transient load steps without failure.

Switch-Mode Inverter Auxiliary Supply

Industrial Sensor Signal Conditioning

Use Scenario: Generating isolated auxiliary 12–15 V rails for gate drivers and logic in motor drive inverters.

IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback or forward converter powering control circuitry.

Use Value: R_θJL = 15 °C/W allows direct thermal coupling to PCB copper, eliminating discrete heatsinks in space-constrained modules.

Use Scenario: Protection and signal-level rectification in analog front-ends for current/voltage sensing in PLC I/O modules.

IC Role / Device Role / Timing Role: Reverse-polarity protection diode and precision half-wave rectifier for sensor excitation signals.

Use Value: ≤5 µA reverse leakage prevents measurement drift in µA-range sensing circuits; 7 pF C_J avoids signal distortion at <1 MHz bandwidths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R06U	Same 1 A / 600 V rating but TO-277 package; higher V_F (1.15 V typ), lower I_FSM (25 A).	Requires different footprint and thermal layout; less suitable for ultra-thin PCBs due to taller profile.	Prefer S1JF-T when SMAF footprint, lower profile, or tighter V_F tolerance is required.
MBR160F	60 V Schottky diode; lower V_F (0.52 V) but insufficient V_RRM for 600 V applications.	Only viable in low-voltage DC-DC stages; cannot replace S1JF-T in mains-connected or high-V_IN circuits.	Select only for sub-100 V systems where switching speed and ultra-low V_F outweigh voltage capability.

Compared with STTH1R06U and MBR160F, the S1JF-T uniquely balances 600 V blocking, 1 A average current, SMAF compactness, and 0.94 V forward drop - making it optimal for space-constrained, medium-voltage industrial power supplies where thermal management via PCB copper is preferred over discrete heatsinking.

Availability

S1JF-T is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose rectification requiring stable component supply, consistent parametric performance, and full traceability.

Supply support for S1JF-T 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, and MOSFETs, with global distribution and AEC-Q200 qualified lines.

The S1JF-T belongs to TSC's S1xF-T family of standard rectifiers designed specifically for cost-sensitive, high-volume industrial and consumer power conversion applications where reliability, manufacturability, and regulatory compliance are essential.

FAQ

What is the maximum junction temperature rating for the S1JF-T?

The S1JF-T has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version B2103). This allows reliable operation in enclosed industrial enclosures or near heat-generating components when mounted on a 5 mm × 5 mm copper pad. Thermal derating begins above 75°C ambient, and the S1JF-T must not exceed this limit during continuous operation.

Does the S1JF-T have a RoHS-compliant and halogen-free construction?

Yes, the S1JF-T is RoHS compliant and halogen-free according to IEC 61249-2-21, as explicitly stated in the "Features" section of the Taiwan Semiconductor datasheet (Version B2103). The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated - satisfying environmental and safety requirements for export to EU, Japan, and other regulated markets.

What is the forward voltage drop of the S1JF-T at 1 A and 125°C?

The S1JF-T exhibits a forward voltage drop of 0.83 V (typical) and 0.93 V (maximum) at 1 A and 125°C, per the "Electrical Specifications" table in the official datasheet. This elevated V_F versus room-temperature values reflects inherent semiconductor physics and must be accounted for in thermal modeling and efficiency calculations for high-ambient applications like motor drives or outdoor power supplies.

Is the S1JF-T suitable for use in automotive applications?

No - the S1JF-T is not qualified to AEC-Q101 or intended for automotive use. Taiwan Semiconductor explicitly states in the "Notice" section (Page 5, Version B2103) that products in the S1xF-T series "are not designed for use in medical, life-saving, or life-sustaining applications," and no automotive qualification data is provided. For automotive-grade rectification, consider TSC's AEC-Q101-certified alternatives or equivalents from qualified suppliers.

How many units of the S1JF-T are supplied per reel, and what packaging format is used?

The S1JF-T is supplied in tape-and-reel packaging containing 7,500 units per reel, as confirmed in the "Ordering Information" section of the Taiwan Semiconductor datasheet (Version B2103). The package type is SMAF, and the reel complies with EIA-481 standards for automated pick-and-place compatibility - supporting high-throughput SMT assembly without manual handling or rework.

S1JF-T Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-221AC, SMA Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 600 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 1 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 5 µA @ 600 V

Capacitance @ Vr, F:: 7pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMAF

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

S1JF-T FAQ

1.How can I place an order for S1JF-T through Aetrix?

Please submit a Request for Quotation (RFQ) for S1JF-T 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 S1JF-T reliable?

The price and inventory of S1JF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1JF-T is usually 5 days.

3.What payment methods are accepted for S1JF-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1JF-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1JF-T?

S1JF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1JF-T 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 S1JF-T?

For technical support, including S1JF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1JF-T requirements.

6.How does Aetrix verify that S1JF-T is sourced from the original manufacturer or authorized distributors?

All S1JF-T 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 S1JF-T meets industry standards.

7.What is the process for return or replacement of S1JF-T?

All S1JF-T units undergo pre-shipment inspection (PSI). If there is an issue with S1JF-T, 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 S1JF-T part is unused and in its original packaging.

Return procedure for S1JF-T:

1.Submit a request within 90 days.

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

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