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

Taiwan Semiconductor Corporation RS1JF-T

Name: RS1JF-T
Brand: Taiwan Semiconductor Corporation
SKU: RS1JF-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RS1JF-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: RS1JF-T.pdf

Description:: 250NS, 1A, 600V, FAST RECOVERY R

Quantity:: RFQ Add To RFQ list

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Inventory:7,480

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Product details

Overview

RS1JF-T from Taiwan Semiconductor is a 1A, 600V fast recovery surface-mount rectifier diode in SMAF package, featuring 250 ns reverse recovery time, 0.92 V forward voltage at 0.5A/25°C, and 150°C maximum junction temperature. It serves as primary output rectification in DC-DC converters requiring low conduction loss and moderate switching speed.

For engineers reviewing the RS1JF-T datasheet, RS1JF-T pinout, RS1JF-T application, or RS1JF-T equivalent, key selection criteria include its 600V V_RRM, 30A I_FSM surge rating, thermal resistance (R_θJL = 15°C/W), and compatibility with automated SMT placement on standard PCB pads.

Technical Context

The RS1JF-T employs a glass-passivated silicon PN junction optimized for fast recovery (t_rr = 250 ns) and low leakage (I_R ≤ 5 µA at 25°C). Its single-die configuration and SMAF package support high-density power conversion layouts with minimal parasitic capacitance (C_J = 9 pF at 1 MHz, 4 V).

Designed for operation across –55°C to +150°C junction range, it delivers stable forward voltage (0.84 V typ. at 1A/125°C) and maintains low thermal resistance to lead (15°C/W), enabling reliable performance in thermally constrained switch-mode power supplies without forced cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - Maximum repetitive reverse voltage before breakdown; defines safe operating limit in 48V–400V DC bus applications.
I_F	1 A continuous - Rated average forward current; supports sustained 12W dissipation at 150°C ambient with proper PCB copper area.
t_rr	250 ns - Reverse recovery time; enables efficient operation up to ~200 kHz switching frequency in flyback and forward converters.
V_F	1.00 V max @ 1A/25°C - Forward voltage drop; determines conduction loss (1W at 1A), directly impacting efficiency and thermal design.
I_R	5 µA max @ 600V/25°C - Reverse leakage current; ensures minimal standby power loss in high-impedance hold-up circuits.
R_θJL	15 °C/W - Junction-to-lead thermal resistance; allows direct heat transfer to PCB copper pad, simplifying thermal management.

Pinout & Package

Package: SMAF (Surface Mount Axial Flat), molded plastic case with matte tin-plated leads, polarity indicated by cathode band, UL 94V-0 rated, weight ≈ 0.035 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to lower-potential side (e.g., transformer secondary center-tap or MOSFET drain node); must withstand full surge current (30A).
Cathode	Forward current exit / reverse voltage blocking terminal	Connected to output rail; marked by visible band; carries full reverse voltage (600V) and defines minimum creepage distance on PCB.

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial-grade power modules.
Moisture sensitivity level 1	Enables direct use from dry pack without baking; reduces manufacturing overhead in high-volume SMT lines.
Low reverse leakage (≤5 µA)	Minimizes standby power loss in energy-sensitive applications such as IoT power adapters and battery backup systems.
RoHS & halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS directives; supports export to regulated markets without material declaration burden.

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Auxiliary Supply
Use Scenario: Secondary-side rectification in isolated 12V/1A buck-derived DC-DC converter feeding FPGA core voltage rails. IC Role / Device Role / Timing Role: Unidirectional current path converting transformer AC output to regulated DC; blocks reverse current during MOSFET off-time. Use Value: 250 ns t_rr limits switching loss and EMI generation; 0.92 V V_F at 0.5A reduces conduction loss to <0.5 W, easing thermal design on 5 mm × 5 mm Cu pad.	Use Scenario: Bias supply rectification for gate drivers in 3-phase motor inverter control board. IC Role / Device Role / Timing Role: Isolated auxiliary power source providing +15V for IGBT gate drive ICs; operates continuously at partial load. Use Value: 600V V_RRM accommodates reflected transients from inductive loads; 150°C T_JMAX ensures stability during extended overtemperature events.
General Purpose AC/DC Adapter	Industrial Sensor Power Supply
Use Scenario: Output rectifier in universal-input (90–264 VAC) 5V/1A wall adapter for smart home devices. IC Role / Device Role / Timing Role: Final-stage rectification after bridge input; handles 1A average load with peak surges during capacitor charging. Use Value: 30A I_FSM withstands cold-start inrush into bulk capacitor; SMAF footprint enables compact layout matching JEDEC MS-012 standards.	Use Scenario: Local 3.3V supply rectification in explosion-proof field transmitter powered from 24V loop. IC Role / Device Role / Timing Role: Low-leakage rectifier in linear post-regulator stage; must operate reliably at –40°C to +85°C ambient. Use Value: ≤5 µA I_R at 25°C and ≤200 µA at 125°C prevents measurable error in precision analog sensor signal chains.

DC-DC Converter Output Rectification

Switching Mode Inverter Auxiliary Supply

Use Scenario: Secondary-side rectification in isolated 12V/1A buck-derived DC-DC converter feeding FPGA core voltage rails.

IC Role / Device Role / Timing Role: Unidirectional current path converting transformer AC output to regulated DC; blocks reverse current during MOSFET off-time.

Use Value: 250 ns t_rr limits switching loss and EMI generation; 0.92 V V_F at 0.5A reduces conduction loss to <0.5 W, easing thermal design on 5 mm × 5 mm Cu pad.

Use Scenario: Bias supply rectification for gate drivers in 3-phase motor inverter control board.

IC Role / Device Role / Timing Role: Isolated auxiliary power source providing +15V for IGBT gate drive ICs; operates continuously at partial load.

Use Value: 600V V_RRM accommodates reflected transients from inductive loads; 150°C T_JMAX ensures stability during extended overtemperature events.

General Purpose AC/DC Adapter

Industrial Sensor Power Supply

Use Scenario: Output rectifier in universal-input (90–264 VAC) 5V/1A wall adapter for smart home devices.

IC Role / Device Role / Timing Role: Final-stage rectification after bridge input; handles 1A average load with peak surges during capacitor charging.

Use Value: 30A I_FSM withstands cold-start inrush into bulk capacitor; SMAF footprint enables compact layout matching JEDEC MS-012 standards.

Use Scenario: Local 3.3V supply rectification in explosion-proof field transmitter powered from 24V loop.

IC Role / Device Role / Timing Role: Low-leakage rectifier in linear post-regulator stage; must operate reliably at –40°C to +85°C ambient.

Use Value: ≤5 µA I_R at 25°C and ≤200 µA at 125°C prevents measurable error in precision analog sensor signal chains.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	Same 1A/600V rating, but TO-277 package (higher R_θJA = 110°C/W vs. RS1JF-T's 89°C/W); t_rr = 200 ns.	Better recovery speed but larger footprint and higher thermal resistance; requires larger copper area for same power dissipation.	Prefer RS1JF-T for space-constrained SMT designs; STTH1L06S suits through-hole legacy upgrades.
ON Semi MUR1060	1A/600V, SMA package (not SMAF); t_rr = 35 ns (faster), but V_F = 1.7 V max @ 1A - 70% higher conduction loss.	Superior switching performance at cost of efficiency; unsuitable where thermal budget is tight or input voltage is low.	Select RS1JF-T when balancing speed, loss, and size; choose MUR1060 only if <100 ns t_rr is mandatory and efficiency penalty is acceptable.

Compared with STTH1L06S and MUR1060, the RS1JF-T offers optimal trade-off between recovery speed (250 ns), forward loss (1.00 V), and thermal performance (R_θJL = 15°C/W) in ultra-compact SMAF packaging-making it ideal for modern high-density power modules where board space and thermal headroom are equally constrained.

Availability

RS1JF-T is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose AC/DC adapters requiring stable component supply and consistent parametric performance across production lots.

Supply support for RS1JF-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 products.

The RS1JF-T belongs to TSC's RS1x series of fast recovery rectifiers, engineered specifically for high-efficiency, surface-mount power conversion in consumer, industrial, and computing power supplies.

FAQ

What is the maximum junction temperature rating for the RS1JF-T?

The RS1JF-T has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in Taiwan Semiconductor's B2103 datasheet. This allows continuous operation in high-ambient environments such as enclosed power supplies or industrial enclosures, provided thermal design meets R_θJL = 15°C/W requirements. The RS1JF-T maintains specified electrical parameters up to this limit.

Does the RS1JF-T have a halogen-free construction?

Yes, the RS1JF-T is halogen-free in accordance with IEC 61249-2-21, as confirmed in the "Features" section of the official Taiwan Semiconductor datasheet (Version B2103). This applies to both molding compound and internal materials, supporting compliance with environmental regulations in EU, Japan, and North America. The RS1JF-T also meets RoHS Directive 2011/65/EU.

What is the reverse recovery time (t_rr) of the RS1JF-T and how is it measured?

The RS1JF-T has a reverse recovery time (t_rr) of 250 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_RR = 0.25 A, per the Electrical Specifications table in the B2103 datasheet. This value reflects typical performance at 25°C and is critical for estimating switching losses in hard-switched topologies like flyback converters operating below 200 kHz.

Is the RS1JF-T suitable for automated SMT assembly?

Yes, the RS1JF-T is explicitly designed for automated placement, as stated in its features list. Its SMAF package, matte tin-plated leads, and moisture sensitivity level 1 (per J-STD-020) allow direct placement from dry pack without baking. The RS1JF-T's standardized footprint and cathode band marking ensure compatibility with vision-guided pick-and-place systems and AOI inspection.

What is the forward voltage drop of the RS1JF-T at elevated temperature?

At 1.0 A and 125°C junction temperature, the RS1JF-T exhibits a typical forward voltage (V_F) of 0.84 V, with a maximum of 1.07 V, per the Electrical Specifications table. This reduced V_F versus room temperature (1.00 V max) is due to the negative temperature coefficient of silicon diodes and confirms stable conduction behavior across its full operating range. The RS1JF-T's V_F remains within specification up to 150°C.

RS1JF-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:: 1.3 V @ 1 A

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

Reverse Recovery Time (trr):: 250 ns

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

Capacitance @ Vr, F:: 9pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMAF

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

RS1JF-T FAQ

1.How can I place an order for RS1JF-T through Aetrix?

Please submit a Request for Quotation (RFQ) for RS1JF-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 RS1JF-T reliable?

The price and inventory of RS1JF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1JF-T is usually 5 days.

3.What payment methods are accepted for RS1JF-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1JF-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RS1JF-T?

RS1JF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RS1JF-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 RS1JF-T?

For technical support, including RS1JF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1JF-T requirements.

6.How does Aetrix verify that RS1JF-T is sourced from the original manufacturer or authorized distributors?

All RS1JF-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 RS1JF-T meets industry standards.

7.What is the process for return or replacement of RS1JF-T?

All RS1JF-T units undergo pre-shipment inspection (PSI). If there is an issue with RS1JF-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 RS1JF-T part is unused and in its original packaging.

Return procedure for RS1JF-T:

1.Submit a request within 90 days.

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

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