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

Taiwan Semiconductor Corporation S1KB R5G

Name: S1KB R5G
Brand: Taiwan Semiconductor Corporation
SKU: S1KB R5G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S1KB R5G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: S1KB R5G.pdf

Description:: DIODE GEN PURP 800V 1A DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:4,394

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Product details

Overview

S1KB R5G from Taiwan Semiconductor is a 1A, 800V repetitive peak reverse voltage (V_RRM) surface-mount standard rectifier diode in DO-214AA (SMB) package, featuring 1.1V max forward voltage at 1A, 30A surge capability, and 150°C max junction temperature - used in AC/DC front-end rectification for industrial SMPS and LED drivers.

For engineers reviewing the S1KB R5G datasheet, S1KB R5G pinout, S1KB R5G application, or S1KB R5G equivalent, key selection criteria include verified V_RRM = 800V, I_F = 1A continuous rating, I_FSM = 30A surge tolerance, thermal resistance R_θJL = 30°C/W, and RoHS/halogen-free compliance per IEC 61249-2-21.

Technical Context

This single-die standard recovery rectifier operates with a glass-passivated junction for stable performance under thermal cycling and humidity exposure. Its DO-214AA (SMB) package supports automated placement and meets J-STD-020 Level 1 moisture sensitivity.

Electrical behavior includes 5µA max reverse leakage at 25°C and 50µA at 125°C under rated V_R, 12pF typical junction capacitance at 1MHz/4V, and forward voltage tightly specified to ≤1.1V at 1A/25°C with pulse testing per JEDEC standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - maximum non-repetitive reverse blocking voltage; defines safe operating limit in bridge or single-phase rectifier topologies
I_F	1 A - average forward current rating at 75°C case temperature; determines continuous conduction capability in power supplies
I_FSM	30 A - peak non-repetitive surge current (8.3ms half-sine); enables robustness against line transients and inrush events
V_F (max)	1.1 V @ 1A, 25°C - forward voltage drop directly impacts conduction loss and thermal design in high-efficiency converters
T_J(max)	150 °C - maximum junction temperature; sets thermal derating boundary for PCB layout and heatsinking requirements
R_θJL	30 °C/W - junction-to-lead thermal resistance; used to calculate temperature rise from lead temperature measurements during validation
C_J (typ)	12 pF @ 1MHz, 4V - junction capacitance affects high-frequency switching noise and EMI filter design in SMPS

Pinout & Package

DO-214AA (SMB) surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to AC input or transformer secondary; polarity must align with circuit's conduction path
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; ties to output rail or ground return; defines direction of unidirectional current flow

Key Features

Feature	Design Value
Glass passivated junction	Enables stable reverse leakage and long-term reliability under humid or thermally cycled environments
Moisture sensitivity level 1	Eliminates bake requirement prior to reflow; supports direct use in standard SMT assembly lines
UL 94V-0 molding compound	Meets flame-retardancy safety standards for enclosed power electronics in industrial and lighting equipment
RoHS and halogen-free compliance	Fulfills environmental regulations (EU RoHS Directive 2011/65/EU and IEC 61249-2-21) for global market access

Applications

Industrial SMPS Rectification	LED Driver Input Stage
Use Scenario: AC-to-DC conversion in 30–100W industrial switch-mode power supplies with universal input (85–265VAC). IC Role / Device Role / Timing Role: Standard rectifier in voltage doubler or bridge configuration; handles full-wave rectified current before bulk capacitor. Use Value: 800V V_RRM provides margin against line surges; 30A I_FSM withstands cold-start inrush without degradation.	Use Scenario: Input rectification stage of constant-current LED drivers for streetlight and high-bay fixtures. IC Role / Device Role / Timing Role: Unidirectional current path for AC mains input; paired with PFC controller and DC-DC stage. Use Value: Low 1.1V V_F reduces conduction loss at 1A average current; DO-214AA footprint enables compact board layout.
AC Adapter Output Rectification	DC-DC Converter Input Protection
Use Scenario: Secondary-side rectification in isolated flyback adapters delivering 5–12V/1–2A for consumer electronics. IC Role / Device Role / Timing Role: Freewheeling/rectifying diode in low-cost flyback topology; conducts during transformer reset phase. Use Value: 150°C T_J(max) allows operation in sealed enclosures; 5µA I_R at 25°C minimizes standby power loss.	Use Scenario: Reverse-polarity and back-EMF protection at input of buck or boost DC-DC modules in battery-powered systems. IC Role / Device Role / Timing Role: Polarity guard diode placed between input source and converter IC; blocks fault currents during miswiring or inductive kickback. Use Value: 800V blocking rating covers transient spikes up to ±600V; glass passivation ensures stability across 10+ year field life.

Industrial SMPS Rectification

LED Driver Input Stage

Use Scenario: AC-to-DC conversion in 30–100W industrial switch-mode power supplies with universal input (85–265VAC).

IC Role / Device Role / Timing Role: Standard rectifier in voltage doubler or bridge configuration; handles full-wave rectified current before bulk capacitor.

Use Value: 800V V_RRM provides margin against line surges; 30A I_FSM withstands cold-start inrush without degradation.

Use Scenario: Input rectification stage of constant-current LED drivers for streetlight and high-bay fixtures.

IC Role / Device Role / Timing Role: Unidirectional current path for AC mains input; paired with PFC controller and DC-DC stage.

Use Value: Low 1.1V V_F reduces conduction loss at 1A average current; DO-214AA footprint enables compact board layout.

AC Adapter Output Rectification

DC-DC Converter Input Protection

Use Scenario: Secondary-side rectification in isolated flyback adapters delivering 5–12V/1–2A for consumer electronics.

IC Role / Device Role / Timing Role: Freewheeling/rectifying diode in low-cost flyback topology; conducts during transformer reset phase.

Use Value: 150°C T_J(max) allows operation in sealed enclosures; 5µA I_R at 25°C minimizes standby power loss.

Use Scenario: Reverse-polarity and back-EMF protection at input of buck or boost DC-DC modules in battery-powered systems.

IC Role / Device Role / Timing Role: Polarity guard diode placed between input source and converter IC; blocks fault currents during miswiring or inductive kickback.

Use Value: 800V blocking rating covers transient spikes up to ±600V; glass passivation ensures stability across 10+ year field life.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R08	V_RRM = 800V, I_F = 1A, but fast recovery (t_rr ≈ 75ns); higher V_F ≈ 1.3V	Better suited for high-frequency PFC stages where switching loss dominates; less optimal for low-frequency, high-surge scenarios	Choose STTH1R08 only if t_rr < 100ns is required; S1KB R5G preferred for cost-sensitive, thermally constrained SMPS
ON Semi MUR108	V_RRM = 800V, I_F = 1A, ultrafast recovery (t_rr ≈ 50ns); VF ≈ 1.25V; SMB package same footprint	Designed for snubberless flyback and resonant topologies needing minimal reverse recovery charge	MUR108 offers faster switching but higher conduction loss; S1KB R5G delivers lower thermal stress in continuous conduction mode

Compared with STTH1R08 and MUR108, the S1KB R5G prioritizes low forward voltage and surge robustness over speed - making it optimal for cost-driven, thermally sensitive 50/60Hz rectification where recovery time is not critical.

Availability

S1KB R5G is available at Aetrix Electronics and suitable for industrial SMPS, LED driver input stages, and AC adapter rectification requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for S1KB R5G 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 electronics and industrial markets since 1979.

The S1KB R5G belongs to TSC's S1x series of standard surface-mount rectifiers - engineered for high-volume, cost-sensitive AC/DC conversion applications where reliability, thermal stability, and regulatory compliance are foundational requirements.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the S1KB R5G?

The S1KB R5G 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 I2102). This rating defines the highest reverse voltage the S1KB R5G can block continuously without breakdown under normal operating conditions and is critical for selecting appropriate safety margins in rectifier circuits.

Does the S1KB R5G meet RoHS and halogen-free requirements?

Yes, the S1KB R5G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor documentation. These certifications ensure the S1KB R5G meets environmental compliance standards for sale and use in the EU, China, and other regulated markets without requiring material declarations or exemptions.

What is the forward voltage (V_F) specification for the S1KB R5G at rated current?

The S1KB R5G has a maximum forward voltage (V_F) of 1.1 V at 1 A forward current and 25°C junction temperature, measured using a 0.3 ms pulse test. This value is critical for calculating conduction losses and thermal design in power supply applications where the S1KB R5G is deployed as a primary rectifier.

Is the S1KB R5G suitable for automated SMT assembly?

Yes, the S1KB R5G is designed for automated placement, as noted in its FEATURES list. Its DO-214AA (SMB) package, matte tin-plated leads, and J-STD-020 Level 1 moisture sensitivity rating allow direct use in standard reflow processes without pre-baking - enabling reliable, high-yield SMT assembly for the S1KB R5G in volume manufacturing.

What is the junction-to-lead thermal resistance (R_θJL) of the S1KB R5G?

The junction-to-lead thermal resistance (R_θJL) of the S1KB R5G is 30°C/W, as specified in the THERMAL PERFORMANCE section of the datasheet. This parameter enables thermal modeling from measured lead temperature to estimate actual junction temperature during operation - a key input when validating thermal performance of the S1KB R5G in real-world PCB layouts.

S1KB R5G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 800 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 1 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

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

Capacitance @ Vr, F:: 12pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

S1KB R5G FAQ

1.How can I place an order for S1KB R5G through Aetrix?

Please submit a Request for Quotation (RFQ) for S1KB R5G 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 S1KB R5G reliable?

The price and inventory of S1KB R5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1KB R5G is usually 5 days.

3.What payment methods are accepted for S1KB R5G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1KB R5G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1KB R5G?

S1KB R5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1KB R5G 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 S1KB R5G?

For technical support, including S1KB R5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1KB R5G requirements.

6.How does Aetrix verify that S1KB R5G is sourced from the original manufacturer or authorized distributors?

All S1KB R5G 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 S1KB R5G meets industry standards.

7.What is the process for return or replacement of S1KB R5G?

All S1KB R5G units undergo pre-shipment inspection (PSI). If there is an issue with S1KB R5G, 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 S1KB R5G part is unused and in its original packaging.

Return procedure for S1KB R5G:

1.Submit a request within 90 days.

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

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