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

Diodes Incorporated RS2A-13-F

Name: RS2A-13-F
Brand: Diodes Incorporated
SKU: RS2A-13-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RS2A-13-F

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: RS2A-13-F.pdf

Description:: DIODE GEN PURP 50V 1.5A SMB

Quantity:: RFQ Add To RFQ list

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Inventory:725

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Product details

Overview

RS2A-13-F from Diodes Incorporated is a 1.5A surface-mount fast recovery rectifier with 50V peak repetitive reverse voltage, 1.3V forward voltage at 1.5A, and 150ns reverse recovery time, housed in an SMA package. It delivers high-efficiency AC/DC conversion in compact power supplies, DC-DC front-ends, and automotive auxiliary power modules.

For engineers reviewing the RS2A-13-F datasheet, RS2A-13-F pinout, RS2A-13-F application, or RS2A-13-F equivalent, key selection criteria include its 50V V_RRM, 1.3V V_FM at rated current, 150ns t_rr, 50A I_FSM surge capability, and SMA package thermal resistance of 20°C/W - all critical for high-frequency switching and thermally constrained layouts.

Technical Context

This device operates as a unidirectional silicon PN junction rectifier optimized for fast switching in offline and DC-DC converter outputs. Its glass-passivated die construction ensures stable leakage performance across temperature, while the 150ns reverse recovery time enables operation up to ~1 MHz without excessive switching loss.

The SMA package provides a defined thermal path (R_θJT = 20°C/W) when mounted on 5.0 mm² copper pads, supporting continuous 1.5A conduction at T_T = 120°C. Polarity is marked by a cathode band, and the lead-free matte tin finish complies with RoHS 3 and Diodes' "Green" halogen/antimony-free specification.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum repetitive reverse voltage before breakdown; sets usable input range in 24V–48V DC-DC or low-voltage AC line applications.
I_O	1.5 A - Average rectified output current at T_T = 120°C; defines continuous power handling in compact SMPS designs.
V_FM	1.3 V @ 1.5A - Forward voltage drop determines conduction loss (1.95W max at full load), directly impacting efficiency and thermal design.
t_rr	150 ns - Reverse recovery time limits minimum switching period; enables use in >500 kHz converters without excessive diode recovery loss.
I_FSM	50 A - Non-repetitive surge rating for 8.3ms half-sine; supports cold-start inrush and transient overload tolerance.
R_θJT	20 °C/W - Junction-to-terminal thermal resistance under standard PCB mounting; used to calculate junction temperature rise above terminal temp.
C_T	30 pF @ 1 MHz, 4V - Junction capacitance affects high-frequency noise coupling and snubber design in switching nodes.

Pinout & Package

RS2A-13-F uses the SMA (DO-214AC) surface-mount package: molded plastic body (UL 94V-0), cathode band polarity marking, and lead-free matte tin-plated terminals solderable per MIL-STD-202 Method 208.

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 return); must handle full 1.5A RMS current and 50A surge.
Cathode	Forward current exit / reverse blocking terminal	Connected to output rail; sustains 50V reverse bias continuously and blocks leakage <5 µA at 25°C.

Key Features

Feature	Design Value
Fast recovery time	150 ns enables high-frequency switching (>500 kHz) with minimal reverse recovery loss in SMPS output stages.
Glass passivated die	Stabilizes IR leakage across -65°C to +150°C, ensuring consistent 5 µA max reverse current at rated V_R.
50A surge rating	Withstands 8.3ms half-sine surges - sufficient for 120Hz line rectification peaks and DC-DC startup transients.
SMA package thermal performance	R_θJT = 20°C/W allows 1.5A operation at 120°C terminal temperature without heatsink, reducing board area vs. through-hole alternatives.

Applications

Industrial Power Supplies

Automotive Body Control Modules

Use Scenario: Secondary-side rectification in 24V-input isolated DC-DC converters for PLC I/O modules.

IC Role / Device Role / Timing Role: Fast recovery rectifier converting transformer secondary AC to regulated 5V/3.3V output rails.

Use Value: 150ns t_rr minimizes switching loss at 300–500 kHz, improving efficiency over standard recovery diodes by ≥3% at full load.

Use Scenario: Reverse polarity protection and load dump clamping in 12V BCM power inputs.

IC Role / Device Role / Timing Role: Unidirectional current path with 50V V_RRM and 50A I_FSM to survive ISO 7637-2 pulse 5a/b.

Use Value: Glass passivation ensures stable 5 µA leakage at 125°C ambient, preventing false shutdowns in hot under-hood environments.

Consumer AC-DC Adapters

Telecom DC-DC Brick Outputs

Use Scenario: Output rectification in 5V/2A flyback adapters for set-top boxes and routers.

IC Role / Device Role / Timing Role: Primary output rectifier operating at 65–100 kHz with synchronous FET complement.

Use Value: 1.3V V_FM at 1.5A yields lower conduction loss than Schottky alternatives rated ≤40V, avoiding derating penalties.

Use Scenario: Secondary-side freewheeling path in 48V-to-12V half-bridge DC-DC bricks.

IC Role / Device Role / Timing Role: Freewheeling diode conducting during low-side FET off-time in continuous conduction mode.

Use Value: 30 pF C_T reduces capacitive coupling into control circuitry, lowering EMI filter component count vs. higher-C alternatives.

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 SMA package, 600V V_RRM, 1.7V V_FM, 50ns t_rr; higher voltage, slower V_F, faster t_rr.	Targeted at 400V PFC boost outputs, not low-voltage rectification.	Select only if system requires >50V blocking with ultra-fast recovery; avoid for 24V systems due to excess V_F loss.
MBRS140T3G	SMA package, 40V V_RRM, 0.52V V_FM, Schottky architecture; no reverse recovery, but limited to 40V.	Used in low-V_IN buck-derived rails where V_RRM margin is acceptable.	Prefer for ≤24V inputs where lowest conduction loss is critical; reject for 36V+ or surge-prone environments due to lack of surge rating.

Compared with STTH1L06S and MBRS140T3G, RS2A-13-F uniquely balances 50V V_RRM, 1.3V V_FM, and 150ns t_rr in a thermally efficient SMA package - making it optimal for cost-sensitive, space-constrained 24–48V industrial and automotive rectification where both surge robustness and mid-frequency switching matter.

Availability

RS2A-13-F is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and consumer AC-DC adapters requiring stable component supply, RoHS-compliant sourcing, and AEC-Q200-aligned manufacturing traceability.

Supply support for RS2A-13-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, application-optimized components for power management, signal integrity, and protection.

RS2A-13-F belongs to the RS2x fast recovery rectifier product line, designed specifically for high-efficiency, surface-mount AC/DC and DC-DC power conversion in thermally constrained and automotive-grade environments.

FAQ

What is the maximum junction temperature for RS2A-13-F?

The absolute maximum junction temperature is +150°C, with continuous operation supported up to T_J = 150°C. Derating begins at T_T = 120°C, where I_O drops linearly to zero at 150°C terminal temperature per Figure 1 in DS15004 Rev. 12-2.

Is RS2A-13-F qualified for automotive applications?

RS2A-13-F is manufactured in IATF 16949-certified facilities and supports PPAP documentation, but it is not formally AEC-Q101 qualified. For automotive use, Diodes recommends contacting their representative to confirm qualification status for specific change-controlled programs.

How does the SMA package affect thermal performance?

With R_θJT = 20°C/W and standard 5.0 mm² copper pads, the SMA package enables 1.5A continuous current at 120°C terminal temperature. Thermal performance degrades significantly with smaller pads or no thermal relief, requiring layout adherence to Diodes' suggested pad dimensions (C = 4.00 mm, X = 2.50 mm).

Can RS2A-13-F replace a standard recovery rectifier in an existing design?

Yes - RS2A-13-F can directly replace slower rectifiers (e.g., 1N400x series) in SMA footprint designs. Its 150ns t_rr reduces switching loss, but designers must verify that reduced reverse recovery energy doesn't induce voltage overshoot in un-snubbed circuits or interact with synchronous FET timing.

RS2A-13-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 50 V

Current - Average Rectified (Io):: 1.5A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 1.5 A

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

Reverse Recovery Time (trr):: 150 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 50 V

Capacitance @ Vr, F:: 30pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMA

Operating Temperature - Junction:: -65°C ~ 150°C

RS2A-13-F FAQ

1.How can I place an order for RS2A-13-F through Aetrix?

Please submit a Request for Quotation (RFQ) for RS2A-13-F 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 RS2A-13-F reliable?

The price and inventory of RS2A-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2A-13-F is usually 5 days.

3.What payment methods are accepted for RS2A-13-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2A-13-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RS2A-13-F?

RS2A-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RS2A-13-F 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 RS2A-13-F?

For technical support, including RS2A-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2A-13-F requirements.

6.How does Aetrix verify that RS2A-13-F is sourced from the original manufacturer or authorized distributors?

All RS2A-13-F 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 RS2A-13-F meets industry standards.

7.What is the process for return or replacement of RS2A-13-F?

All RS2A-13-F units undergo pre-shipment inspection (PSI). If there is an issue with RS2A-13-F, 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 RS2A-13-F part is unused and in its original packaging.

Return procedure for RS2A-13-F:

1.Submit a request within 90 days.

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

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