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

Taiwan Semiconductor Corporation RS2KA-T

Name: RS2KA-T
Brand: Taiwan Semiconductor Corporation
SKU: RS2KA-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RS2KA-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: RS2KA-T.pdf

Description:: 500NS, 2A, 800V, FAST RECOVERY R

Quantity:: RFQ Add To RFQ list

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Inventory:8,275

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Product details

Overview

RS2KA-T from Taiwan Semiconductor is a 2A, 800V fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 500 ns reverse recovery time, 1.03 V forward voltage at 2A/25°C, and 10 pF junction capacitance. It serves as a primary AC/DC input rectifier in compact switching power supplies.

For engineers reviewing the RS2KA-T datasheet, RS2KA-T pinout, RS2KA-T application, or RS2KA-T equivalent, key selection criteria include peak reverse voltage rating, thermal resistance (R_θJL = 14 °C/W), low leakage (<5 µA @ 25°C), and compatibility with automated SMT placement on standard PCB pads.

Technical Context

The RS2KA-T employs a glass-passivated silicon die optimized for fast recovery in high-frequency switching topologies. Its 800 V V_RRM and 500 ns t_rr enable efficient operation in 50–200 kHz SMPS designs where reverse recovery loss must be minimized.

Thermal performance is defined by R_θJL = 14 °C/W and R_θJA = 86 °C/W on a 5 mm × 5 mm Cu pad, supporting continuous 2 A conduction up to 150 °C junction temperature with appropriate board layout.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - Withstands peak reverse voltage in 560 V RMS bridge applications without breakdown
I_F	2 A - Continuous forward current rating at T_A = 75°C on standard PCB
t_rr	500 ns - Enables reduced switching losses in high-frequency converters vs. standard rectifiers
V_F @ 2A/25°C	1.03 V - Low conduction loss contributes to >90% efficiency in 12–24 V output SMPS
C_J	10 pF - Minimizes capacitive coupling noise in EMI-sensitive flyback snubber networks
R_θJL	14 °C/W - Allows direct thermal path to copper pour for reliable 2 A operation without heatsink
I_R @ 25°C	<5 µA - Ensures low standby power in energy-efficient adapters meeting Level VI standards

Pinout & Package

Package: DO-214AC (SMA), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads, JEDEC-compliant moisture level 1, UL 94V-0 molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input terminal for forward conduction	Connected to AC input or transformer secondary; requires adequate trace width for 2 A RMS
Cathode	Output terminal for forward conduction	Connected to bulk capacitor or DC bus; polarity marked by visible band on package body

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability under thermal cycling and humidity exposure per J-STD-020
Low I_R at 125°C	≤100 µA ensures stable DC bus hold-up during high-temperature operation
Fast t_rr (500 ns)	Reduces reverse recovery charge (Q_rr) to <1.2 µC, lowering diode switching loss
Halogen-free construction	Complies with IEC 61249-2-21 for environmentally regulated industrial and consumer end equipment
SMT-compatible lead finish	Matte tin plating meets J-STD-002 for consistent solder wetting in reflow profiles

Applications

AC/DC Power Adapters	Industrial DC-DC Converters
Use Scenario: 12 V/2 A wall adapter for IoT gateways with universal 90–264 VAC input. IC Role / Device Role / Timing Role: Primary-side bridge rectifier converting AC line to pulsating DC before PFC or flyback controller. Use Value: 800 V V_RRM provides 2× safety margin over 375 V peak line voltage, enabling robust surge immunity.	Use Scenario: 48 V input to 5 V/3 A isolated converter in factory automation PLC modules. IC Role / Device Role / Timing Role: Input rectifier in full-wave bridge feeding active clamp forward topology. Use Value: 500 ns t_rr minimizes cross-conduction loss during synchronous rectification transitions.
LED Driver Power Supplies	Telecom Power Rectification
Use Scenario: Constant-current LED driver for outdoor signage operating at 105°C ambient. IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous flyback stage. Use Value: R_θJL = 14 °C/W enables 2 A conduction at T_J ≤ 135°C with minimal copper area.	Use Scenario: -48 V telecom rectifier module requiring high reliability and low leakage. IC Role / Device Role / Timing Role: Bulk rectifier in redundant AC feed circuitry prior to DC distribution. Use Value: <5 µA reverse leakage at 25°C maintains system standby current below 100 µA threshold.

AC/DC Power Adapters

Industrial DC-DC Converters

Use Scenario: 12 V/2 A wall adapter for IoT gateways with universal 90–264 VAC input.

IC Role / Device Role / Timing Role: Primary-side bridge rectifier converting AC line to pulsating DC before PFC or flyback controller.

Use Value: 800 V V_RRM provides 2× safety margin over 375 V peak line voltage, enabling robust surge immunity.

Use Scenario: 48 V input to 5 V/3 A isolated converter in factory automation PLC modules.

IC Role / Device Role / Timing Role: Input rectifier in full-wave bridge feeding active clamp forward topology.

Use Value: 500 ns t_rr minimizes cross-conduction loss during synchronous rectification transitions.

LED Driver Power Supplies

Telecom Power Rectification

Use Scenario: Constant-current LED driver for outdoor signage operating at 105°C ambient.

IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous flyback stage.

Use Value: R_θJL = 14 °C/W enables 2 A conduction at T_J ≤ 135°C with minimal copper area.

Use Scenario: -48 V telecom rectifier module requiring high reliability and low leakage.

IC Role / Device Role / Timing Role: Bulk rectifier in redundant AC feed circuitry prior to DC distribution.

Use Value: <5 µA reverse leakage at 25°C maintains system standby current below 100 µA threshold.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R08	Same 800 V V_RRM, but t_rr = 75 ns; VF = 1.15 V @ 2A/25°C; TO-220AC package	Requires through-hole mounting and heatsink for 2 A; lower t_rr suits >300 kHz designs	Choose STTH2R08 only if board supports TO-220 footprint and higher switching frequency justifies added cost and size
ES2D-E3/57T	Same DO-214AC package; 200 V V_RRM; t_rr = 35 ns; VF = 0.95 V @ 2A/25°C	Not suitable for 800 V line applications; limited to low-voltage DC-DC outputs	Select ES2D-E3/57T only for secondary-side rectification where V_RRM ≤ 200 V and ultra-fast recovery is critical

Compared with STTH2R08 and ES2D-E3/57T, the RS2KA-T uniquely balances 800 V capability, SMT compatibility, and thermally efficient DO-214AC packaging-making it optimal for space-constrained, medium-frequency AC/DC front-ends where cost and manufacturability are prioritized over sub-100 ns recovery.

Availability

RS2KA-T is available at Aetrix Electronics and suitable for AC/DC power adapters, industrial DC-DC converters, and LED driver power supplies requiring stable component supply across production volumes.

Supply support for RS2KA-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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power and protection markets since 1979.

The RS2KA-T belongs to TSC's RS2x series of fast recovery rectifiers, engineered specifically for high-efficiency, high-reliability switch-mode power conversion in consumer, industrial, and telecom infrastructure.

FAQ

What is the maximum junction temperature rating for RS2KA-T?

The RS2KA-T has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table. This allows continuous 2 A operation in environments up to 75°C ambient when mounted on a 5 mm × 5 mm Cu pad, as confirmed by thermal resistance data (R_θJA = 86 °C/W). Derating curves in the RS2KA-T datasheet define safe current limits above 75°C ambient.

Does RS2KA-T support automated SMT assembly?

Yes, RS2KA-T supports automated surface-mount assembly. Its DO-214AC (SMA) package features matte tin-plated leads compliant with J-STD-002 solderability requirements, and its moisture sensitivity level is rated Class 1 per J-STD-020-eliminating bake requirements before reflow. The device is supplied in 7,500-piece tape-and-reel format compatible with standard pick-and-place equipment.

What is the reverse recovery time (t_rr) specification for RS2KA-T?

The RS2KA-T has a reverse recovery time (t_rr) of 500 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A per the electrical specifications table. This value is confirmed for both RS2KA-T and RS2MA-T variants and reflects typical performance under standard test conditions-enabling predictable loss modeling in 100–200 kHz switching converters.

Is RS2KA-T halogen-free and RoHS compliant?

Yes, RS2KA-T is halogen-free per IEC 61249-2-21 and RoHS compliant. These compliance statements are explicitly documented in the FEATURES section of the official Taiwan Semiconductor datasheet (Version D2111). The molding compound meets UL 94V-0 flammability rating, and all materials declarations align with EU Directive 2011/65/EU and amendment (EU) 2015/863.

How does RS2KA-T compare to RS2JA-T in forward voltage performance?

At 2 A and 25°C, RS2KA-T exhibits a typical forward voltage (V_F) of 1.03 V, compared to 1.12 V for RS2JA-T-representing a 0.09 V reduction. At 125°C and 2 A, RS2KA-T's V_F drops to 0.90 V versus 1.01 V for RS2JA-T. This lower V_F directly reduces conduction loss and improves thermal margin in high-temperature applications, as validated in the ELECTRICAL SPECIFICATIONS table.

RS2KA-T 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):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 2 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

RS2KA-T FAQ

1.How can I place an order for RS2KA-T through Aetrix?

Please submit a Request for Quotation (RFQ) for RS2KA-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 RS2KA-T reliable?

The price and inventory of RS2KA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2KA-T is usually 5 days.

3.What payment methods are accepted for RS2KA-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2KA-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RS2KA-T?

RS2KA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RS2KA-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 RS2KA-T?

For technical support, including RS2KA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2KA-T requirements.

6.How does Aetrix verify that RS2KA-T is sourced from the original manufacturer or authorized distributors?

All RS2KA-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 RS2KA-T meets industry standards.

7.What is the process for return or replacement of RS2KA-T?

All RS2KA-T units undergo pre-shipment inspection (PSI). If there is an issue with RS2KA-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 RS2KA-T part is unused and in its original packaging.

Return procedure for RS2KA-T:

1.Submit a request within 90 days.

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

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