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 SK13B

Name: SK13B
Brand: Taiwan Semiconductor Corporation
SKU: SK13B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SK13B

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: SK13B.pdf

Description:: DIODE SCHOTTKY 30V 1A DO214AA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:9,936

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

Product details

Overview

SK13B from Taiwan Semiconductor is a 1A, 30V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, featuring 0.50V forward voltage at 1A and 500µA reverse leakage at 25°C. It delivers high surge current capability (30A), 10,000 V/µs dV/dt rating, and operates up to 125°C junction temperature - deployed in compact AC/DC adapters and low-voltage SMPS outputs.

For engineers reviewing the SK13B datasheet, SK13B pinout, SK13B application, or SK13B equivalent, key selection considerations include its 30V V_RRM, low VF trade-off vs. higher-voltage SK-series variants, SMB footprint compatibility, and thermal performance under continuous 1A conduction with minimal heatsinking.

Technical Context

The SK13B implements a single-die Schottky junction optimized for low forward voltage drop and fast switching in unidirectional DC output rectification. Its guard ring structure enhances overvoltage robustness without compromising soft recovery behavior.

Designed for surface-mount assembly on FR-4 PCBs, it meets J-STD-020 moisture sensitivity level 1 and JESD201 Class 2 whisker resistance. The cathode band polarity marking and matte tin-plated leads ensure reliable automated placement and solderability per J-STD-002.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	30 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 24V-output SMPS secondary-side rectification.
I_F	1 A - Continuous average forward current; supports stable operation at full load without derating below 75°C ambient.
V_F @ 1A, 25°C	0.50 V - Low conduction loss enabling >92% efficiency in 5–24V adapter outputs at typical loads.
I_R @ 30V, 25°C	500 µA - Minimal leakage ensures low standby power in energy-efficient designs compliant with Level VI standards.
I_FSM	30 A - Peak non-repetitive surge current handling capability; withstands inrush into capacitive loads or line transients.
R_θJL	25 °C/W - Junction-to-lead thermal resistance; enables direct PCB copper pour heat sinking without external heatsink.

Pinout & Package

Package: DO-214AA (SMB), surface-mount plastic case with cathode band polarity indicator; dimensions 4.60 × 2.60 × 2.00 mm; UL 94V-0 rated molding compound; weight ≈ 0.093 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Input terminal for forward conduction	Connected to transformer secondary or switching node; requires adequate trace width for 1A RMS current.
Cathode (Lead 2)	Output terminal for forward conduction	Marked by visible band; ties to output capacitor positive; critical for minimizing loop inductance in high-frequency SMPS.

Key Features

Feature	Design Value
Guard ring overvoltage protection	Enhances ruggedness against transient voltage spikes without increasing VF or capacitance.
Moisture sensitivity level 1	Eliminates bake requirements prior to reflow; supports standard SMT production flow without special handling.
Halogen-free construction	Complies with IEC 61249-2-21; meets environmental compliance mandates for consumer and industrial end equipment.
High surge current capability	30A I_FSM supports reliable startup into bulk capacitors up to 470 µF in 24V adapters.

Applications

AC/DC Adapters	Low-Voltage SMPS Outputs
Use Scenario: Wall-mounted 5–24V power supplies for routers, IP cameras, and IoT gateways. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to regulated DC. Use Value: 0.50V V_F minimizes conduction loss and thermal rise in space-constrained enclosures.	Use Scenario: Secondary-side rectification in 12V/1A open-frame power supplies for industrial controllers. IC Role / Device Role / Timing Role: Unidirectional current path with fast recovery to maintain regulation during PWM transitions. Use Value: 10,000 V/µs dV/dt rating prevents false turn-on during fast-switching MOSFET transitions.
LED Lighting Drivers	USB-C Power Delivery Accessories
Use Scenario: Constant-current LED drivers for commercial downlights operating from 12–24V DC input. IC Role / Device Role / Timing Role: Input rectifier in buck-derived topologies accepting wide-range DC input. Use Value: 500 µA reverse leakage at 25°C ensures negligible standby current in always-on lighting systems.	Use Scenario: Compact 20W USB-C PD adapters with dual-output (5V/3A, 9V/2.22A) capability. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement in quasi-resonant flyback designs. Use Value: SMB footprint allows direct layout reuse across SK12B–SK115B family for voltage-scaling flexibility.

AC/DC Adapters

Low-Voltage SMPS Outputs

Use Scenario: Wall-mounted 5–24V power supplies for routers, IP cameras, and IoT gateways.

IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to regulated DC.

Use Value: 0.50V V_F minimizes conduction loss and thermal rise in space-constrained enclosures.

Use Scenario: Secondary-side rectification in 12V/1A open-frame power supplies for industrial controllers.

IC Role / Device Role / Timing Role: Unidirectional current path with fast recovery to maintain regulation during PWM transitions.

Use Value: 10,000 V/µs dV/dt rating prevents false turn-on during fast-switching MOSFET transitions.

LED Lighting Drivers

USB-C Power Delivery Accessories

Use Scenario: Constant-current LED drivers for commercial downlights operating from 12–24V DC input.

IC Role / Device Role / Timing Role: Input rectifier in buck-derived topologies accepting wide-range DC input.

Use Value: 500 µA reverse leakage at 25°C ensures negligible standby current in always-on lighting systems.

Use Scenario: Compact 20W USB-C PD adapters with dual-output (5V/3A, 9V/2.22A) capability.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement in quasi-resonant flyback designs.

Use Value: SMB footprint allows direct layout reuse across SK12B–SK115B family for voltage-scaling flexibility.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS13 (Diodes Inc.)	V_RRM = 30V, V_F = 0.55V @ 1A, I_R = 500µA @ 25°C - slightly higher VF, same SMB package.	Identical mounting and thermal interface; marginally lower efficiency at full load due to +50mV VF.	Select SS13 if dual-sourcing is required and 0.05V VF penalty is acceptable for supply chain resilience.
SB130 (ON Semiconductor)	V_RRM = 30V, V_F = 0.52V @ 1A, I_R = 200µA @ 25°C - tighter IR spec but 2% higher VF.	Better leakage performance suits ultra-low-standby designs; identical SMB footprint and thermal profile.	Choose SB130 when <200µA reverse leakage at 25°C is mandatory for Energy Star compliance.

Compared with SS13 and SB130, the SK13B offers the lowest forward voltage (0.50V) in the 30V SMB-class Schottky rectifier segment, delivering optimal conduction efficiency at 1A while maintaining industry-standard reliability and manufacturability.

Availability

SK13B is available at Aetrix Electronics and suitable for AC/DC adapters, low-voltage SMPS outputs, and LED lighting drivers requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for SK13B 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 management and industrial markets since 1979.

The SK1xB series targets cost-sensitive, high-volume power conversion applications where low VF, SMB compatibility, and robust surge handling are prioritized over ultra-low leakage or extended temperature range.

FAQ

What is the maximum junction temperature rating for the SK13B?

The SK13B has a maximum junction temperature (T_J) rating of +125°C. This specification is confirmed in the Absolute Maximum Ratings table of the official TSC datasheet (Version M2212). Operation beyond this limit risks permanent degradation of the Schottky junction. Derating curves show that continuous 1A conduction remains viable up to ~75°C ambient when mounted on standard 1 oz. copper PCB pads.

Does the SK13B have a halogen-free construction?

Yes, the SK13B is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the TSC datasheet. This compliance supports environmental requirements for RoHS-compliant end products sold in EU, Japan, and other regulated markets, and eliminates brominated flame retardants from the molding compound.

What is the reverse leakage current of the SK13B at 100°C?

The SK13B exhibits a maximum reverse leakage current (I_R) of 10 mA at rated V_RRM = 30V and T_J = 100°C, per the Electrical Specifications table. This value reflects typical thermal runaway behavior common to Schottky diodes and must be accounted for in thermal design - especially in enclosed, high-ambient environments like sealed LED drivers.

Is the SK13B suitable for use in automotive applications?

No, the SK13B is not qualified for automotive applications. The TSC product notice explicitly states that "The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications," and no AEC-Q101 qualification or automotive-grade screening is referenced in the datasheet. Its 125°C T_J max and standard industrial reliability testing do not meet automotive temperature or stress requirements.

What packaging format is available for the SK13B?

The SK13B is supplied in tape-and-reel packaging: 3,000 units per reel, compatible with standard pick-and-place equipment. This format is specified in the ORDERING INFORMATION section and aligns with DO-214AA (SMB) carrier tape dimensions defined in EIA-481 standards. Reel ID, orientation, and pocket depth conform to J-STD-033 handling guidelines for moisture sensitivity level 1 devices.

SK13B Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 30 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 500 mV @ 1 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 30 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

Operating Temperature - Junction:: -55°C ~ 125°C

SK13B FAQ

1.How can I place an order for SK13B through Aetrix?

Please submit a Request for Quotation (RFQ) for SK13B 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 SK13B reliable?

The price and inventory of SK13B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK13B is usually 5 days.

3.What payment methods are accepted for SK13B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK13B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SK13B?

SK13B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SK13B 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 SK13B?

For technical support, including SK13B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK13B requirements.

6.How does Aetrix verify that SK13B is sourced from the original manufacturer or authorized distributors?

All SK13B 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 SK13B meets industry standards.

7.What is the process for return or replacement of SK13B?

All SK13B units undergo pre-shipment inspection (PSI). If there is an issue with SK13B, 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 SK13B part is unused and in its original packaging.

Return procedure for SK13B:

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…