Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Taiwan Semiconductor Corporation RS1K

Name: RS1K
Brand: Taiwan Semiconductor Corporation
SKU: RS1K
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: RS1K

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: RS1K.pdf

Description:: DIODE GEN PURP 800V 1A DO214AC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:14,873

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

RS1K from Taiwan Semiconductor is a fast-switching, glass-passivated surface-mount rectifier diode rated for 800 V repetitive peak reverse voltage, 1 A average forward current, and 30 A non-repetitive surge current, with 500 ns reverse recovery time and DO-214AC (SMA) package - used in snubber networks and DC-DC converters requiring high-voltage, medium-current rectification.

For engineers reviewing the RS1K datasheet, RS1K pinout, RS1K application, or RS1K equivalent, key selection criteria include its 800 V V_RRM, 500 ns trr, 1.3 V max forward voltage at 1 A, thermal resistance of 105 °C/W (junction-to-ambient), and compatibility with automated SMT placement per J-STD-020 Level 1 moisture sensitivity.

Technical Context

The RS1K operates as a single-die, unidirectional silicon rectifier optimized for fast switching in high-frequency power conversion. Its 500 ns reverse recovery time enables efficient operation in switching-mode supplies above 50 kHz, while the glass-passivated junction ensures stable leakage performance up to 125 °C (50 µA IR).

Thermally, it features R_θJA = 105 °C/W and R_θJL = 30 °C/W, supporting continuous 1 A conduction at ambient temperatures ≤ 75 °C without heatsinking. The DO-214AC (SMA) package provides standardized solderable matte tin-plated leads and UL 94V-0 molding compound.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - supports input rectification in 400–600 V AC line-derived SMPS or industrial DC bus interfaces
I_F	1 A continuous - suitable for low-to-medium power outputs up to ~15 W at 12 V with adequate thermal margin
t_rr	500 ns - enables use in 100–500 kHz switching topologies without excessive switching loss or ringing
V_F max	1.3 V @ 1 A, 25°C - contributes ≤1.3 W conduction loss per device at full load, critical for thermal budgeting
R_θJA	105 °C/W - requires PCB copper area ≥ 100 mm² for safe 1 A operation at 70°C ambient
I_FSM	30 A @ 8.3 ms - withstands typical inrush and fault currents in offline power supplies
Junction temp	−55°C to +175°C - allows deployment in automotive under-hood or industrial control environments

Pinout & Package

DO-214AC (SMA) package: molded plastic body, cathode indicated by band, matte tin-plated leads compliant with J-STD-002 solderability, weight ≈ 0.060 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node)
Cathode	Forward current exit / reverse-blocking terminal	Marked with band; ties to output rail or filter capacitor positive; blocks 800 V reverse bias

Key Features

Feature	Design Value
Glass-passivated junction	Ensures stable reverse leakage (<5 µA @ 25°C, <50 µA @ 125°C) and long-term reliability under humidity stress
Fast reverse recovery (500 ns)	Reduces switching losses and EMI in high-frequency flyback and forward converters
J-STD-020 Level 1 moisture sensitivity	Enables direct placement from dry pack without baking - lowers manufacturing cost and cycle time
UL 94V-0 molding compound	Meets flammability requirements for enclosed power supplies and lighting drivers
RoHS & halogen-free compliance	Supports environmental compliance for EU, China RoHS, and JEITA-MITI standards

Applications

DC-DC Converter Output Rectification	Snubber Network Diode
Use Scenario: Secondary-side rectification in isolated 12–48 V output flyback or forward converters delivering 5–15 W. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 500 ns t_rr minimizes reverse recovery charge loss; 1.3 V V_F limits conduction loss at 1 A load.	Use Scenario: Clamp diode in RCD snubber across MOSFET or IGBT in offline SMPS or motor drives. IC Role / Device Role / Timing Role: Fast turn-on to absorb voltage spikes during switch turn-off; blocks high dv/dt during steady state. Use Value: 800 V V_RRM withstands reflected transients; fast t_rr prevents snap-off oscillation during clamp discharge.
Switching Mode Inverter Input Stage	Lighting Driver (LED Ballast)
Use Scenario: Input bridge rectification in 100–240 V AC-fed inverters for solar micro-inverters or UPS systems. IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier converting AC line to bulk DC bus prior to H-bridge inversion. Use Value: 800 V rating covers 240 V AC × √2 × safety margin; 30 A I_FSM handles startup surges.	Use Scenario: Constant-current LED driver with passive PFC and buck/boost topology operating from 90–305 V AC. IC Role / Device Role / Timing Role: High-voltage rectifier feeding bulk storage capacitor in offline LED driver IC supply rails. Use Value: Glass passivation ensures low IR drift over lifetime; DO-214AC footprint fits compact LED module layouts.

DC-DC Converter Output Rectification

Snubber Network Diode

Use Scenario: Secondary-side rectification in isolated 12–48 V output flyback or forward converters delivering 5–15 W.

IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output.

Use Value: 500 ns t_rr minimizes reverse recovery charge loss; 1.3 V V_F limits conduction loss at 1 A load.

Use Scenario: Clamp diode in RCD snubber across MOSFET or IGBT in offline SMPS or motor drives.

IC Role / Device Role / Timing Role: Fast turn-on to absorb voltage spikes during switch turn-off; blocks high dv/dt during steady state.

Use Value: 800 V V_RRM withstands reflected transients; fast t_rr prevents snap-off oscillation during clamp discharge.

Switching Mode Inverter Input Stage

Lighting Driver (LED Ballast)

Use Scenario: Input bridge rectification in 100–240 V AC-fed inverters for solar micro-inverters or UPS systems.

IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier converting AC line to bulk DC bus prior to H-bridge inversion.

Use Value: 800 V rating covers 240 V AC × √2 × safety margin; 30 A I_FSM handles startup surges.

Use Scenario: Constant-current LED driver with passive PFC and buck/boost topology operating from 90–305 V AC.

IC Role / Device Role / Timing Role: High-voltage rectifier feeding bulk storage capacitor in offline LED driver IC supply rails.

Use Value: Glass passivation ensures low IR drift over lifetime; DO-214AC footprint fits compact LED module layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R08	Same 800 V V_RRM, but 1.15 V typ V_F @ 1 A and 350 ns t_rr; TO-277 package (smaller footprint, higher R_θJA)	Better efficiency in high-duty-cycle apps; less thermal margin on standard FR4	Prefer STTH1R08 where board space is constrained and thermal design includes copper pour
ES1J	Same DO-214AC package and 600 V V_RRM; 35 ns t_rr, 1.7 V max V_F; lower voltage rating limits use to ≤300 V AC inputs	Superior speed for >1 MHz resonant converters; insufficient for 400 V DC bus clamping	Select ES1J only when V_RRM margin ≥2× peak circuit voltage and ultra-fast recovery is prioritized

Compared with STTH1R08 and ES1J, the RS1K offers balanced trade-offs: sufficient 800 V rating for universal AC input designs, proven 500 ns recovery in production flybacks, and DO-214AC manufacturability - making it optimal for cost-sensitive, thermally moderate 10–20 W industrial and lighting power supplies.

Availability

RS1K is available at Aetrix Electronics and suitable for DC-DC converters, snubber networks, and lighting drivers requiring stable component supply with consistent parametric performance across production lots.

Supply support for RS1K 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, specializing in power rectifiers, TVS diodes, and MOSFETs since 1979.

The RS1K belongs to TSC's RS1x fast rectifier family, designed specifically for high-voltage, medium-current SMT rectification in cost-sensitive industrial and consumer power supplies where reliability, manufacturability, and thermal robustness are prioritized.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the RS1K?

The RS1K has a maximum repetitive peak reverse voltage (V_RRM) of 800 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version M2304). This rating defines the highest reverse voltage the RS1K can block repeatedly without breakdown under normal operating conditions and is critical for selecting appropriate safety margins in AC-DC and DC-DC converter designs.

What is the reverse recovery time (t_rr) of the RS1K and how is it measured?

The RS1K has a reverse recovery time (t_rr) of 500 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 section of the RS1K datasheet. This value reflects the time required for the RS1K to transition from forward conduction to reverse blocking, directly impacting switching loss and EMI in high-frequency power circuits.

Is the RS1K RoHS and halogen-free compliant?

Yes, the RS1K is RoHS compliant and halogen-free, as explicitly stated in the FEATURES section of the Taiwan Semiconductor RS1A–RS1M datasheet (Version M2304). These compliance attributes meet EU Directive 2011/65/EU and JEITA-MITI standards, enabling use in environmentally regulated markets without restriction.

What package type does the RS1K use and what are its key mechanical properties?

The RS1K uses the DO-214AC (SMA) surface-mount package, with a UL 94V-0 compliant molding compound, matte tin-plated leads meeting J-STD-002 solderability, and polarity indicated by a cathode band. Its mechanical outline conforms to JEDEC DO-214, Variation AC, and weighs approximately 0.060 g - ensuring compatibility with standard SMT assembly lines and reflow profiles.

What is the maximum average forward current (I_F) rating for the RS1K and under what conditions?

The RS1K is rated for a maximum average forward current (I_F) of 1 A at case temperature T_C = 75°C, as specified in the Absolute Maximum Ratings table. This rating assumes proper PCB copper area for heat dissipation and accounts for thermal derating above ambient; actual usable current depends on layout, airflow, and duty cycle in the target application.

RS1K Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 800 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):: 500 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 800 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

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

RS1K FAQ

1.How can I place an order for RS1K through Aetrix?

Please submit a Request for Quotation (RFQ) for RS1K 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 RS1K reliable?

The price and inventory of RS1K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1K is usually 5 days.

3.What payment methods are accepted for RS1K?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1K transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RS1K?

RS1K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RS1K 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 RS1K?

For technical support, including RS1K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1K requirements.

6.How does Aetrix verify that RS1K is sourced from the original manufacturer or authorized distributors?

All RS1K 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 RS1K meets industry standards.

7.What is the process for return or replacement of RS1K?

All RS1K units undergo pre-shipment inspection (PSI). If there is an issue with RS1K, 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 RS1K part is unused and in its original packaging.

Return procedure for RS1K:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

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, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…