My Inquiry
My Account
Taiwan Semiconductor Corporation S3KB R5G
- Part No.:
- S3KB R5G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S3KB R5G.pdf
- Description:
- DIODE GEN PURP 800V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,830
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
S3KB R5G from Taiwan Semiconductor is a 3A, 800V standard surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring glass-passivated junction, 1.15V max forward voltage at 3A/25°C, 80A surge capability, and 150°C max junction temperature. It serves as primary-side AC/DC rectifier in offline SMPS and industrial power adapters.
For engineers reviewing the S3KB R5G datasheet, S3KB R5G pinout, S3KB R5G application, or S3KB R5G equivalent, key selection criteria include repetitive peak reverse voltage (800V), forward current rating (3A), thermal resistance (10°C/W), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance for high-reliability power conversion designs.
Technical Context
This single-die standard recovery rectifier operates with a typical reverse recovery time of 1500 ns under IF = 0.5A, IR = 1.0A, Irr = 0.25A conditions and exhibits 40 pF junction capacitance at 1 MHz and 4.0V reverse bias. Its TJ range spans −55°C to +150°C, supporting operation in thermally constrained environments.
The device uses matte tin-plated leads compliant with J-STD-002 solderability and meets JESD201 Class 2 whisker resistance. Polarity is marked by cathode band on the DO-214AA molded case, which carries UL 94V-0 flammability rating and weighs approximately 0.090 g.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse voltage the diode blocks without breakdown in continuous operation |
| IF | 3 A - Continuous average forward current rating at TA = 25°C, derates above 25°C per curve Fig.1 |
| IFSM | 80 A - Non-repetitive peak surge current tolerance for 8.3 ms half-sine wave, critical for inrush handling |
| VF (max) | 1.15 V - Maximum forward voltage drop at 3 A and 25°C junction temperature, directly impacts conduction loss |
| IR (max) | 10 µA - Maximum reverse leakage at rated VR and 25°C, ensures low standby power loss in high-impedance circuits |
| RθJL | 10 °C/W - Junction-to-lead thermal resistance, defines temperature rise per watt dissipated into PCB copper |
| trr | 1500 ns - Reverse recovery time under specified test conditions, influences switching loss in hard-commutated topologies |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode-indicating band; molded epoxy case rated UL 94V-0; matte tin-plated leads; polarity-marked via visible cathode band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary side; must withstand full surge current and thermal stress |
| Cathode | Forward current exit point / reverse voltage reference | Connected to bulk capacitor or DC bus; cathode band identifies terminal during automated placement and inspection |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance vs. non-passivated die, critical for outdoor or humid-environment power supplies |
| J-STD-020 Level 1 moisture sensitivity | Enables standard SMT reflow without baking preconditioning, reducing manufacturing cost and cycle time |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for end equipment safety certifications including UL/EN 62368-1 |
| RoHS & halogen-free compliance | Fulfills environmental compliance mandates (EU RoHS Directive 2011/65/EU and IEC 61249-2-21) for global market access |
| Single-die configuration | Provides predictable thermal behavior and avoids mismatch-related failure modes seen in dual-die or multi-chip packages |
Applications
| AC/DC Power Adapters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: Wall-mounted 12–24 V output adapters for consumer electronics and IoT gateways. IC Role / Device Role / Timing Role: Primary-side bridge or single-phase rectifier converting universal AC input to DC bus. Use Value: 800 V VRRM provides margin against line surges and transient spikes in unregulated AC mains environments. |
Use Scenario: 100–500 W open-frame SMPS used in PLCs, motor drives, and factory automation controllers. IC Role / Device Role / Timing Role: Input rectifier in voltage-doubler or full-wave bridge configuration feeding PFC stage. Use Value: 80 A IFSM rating supports repeated cold-start surges without degradation, ensuring field reliability over 10+ year lifetimes. |
| LED Driver Power Stages | DC-DC Converter Front-Ends |
Use Scenario: Constant-voltage LED drivers for commercial lighting fixtures operating from 230 VAC mains. IC Role / Device Role / Timing Role: Rectification element before bulk capacitor in flyback or buck-derived topologies. Use Value: Low 1.15 V VF reduces conduction loss at 3 A average current, improving system efficiency by ~0.4% at full load. |
Use Scenario: Isolated DC-DC modules converting 48 V telecom or server backplane rails to intermediate 12 V or 5 V buses. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement where cost-sensitive designs prioritize BOM simplicity. Use Value: 150°C TJ max enables operation in high-ambient environments (e.g., sealed enclosures) without forced air cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3R08 | Same 3A/800V rating but faster trr (75 ns), higher VF (1.7 V typ), TO-220AC package | Requires heatsink mounting; unsuitable for space-constrained SMB layouts | Prefer when fast recovery is mandatory and board area allows through-hole footprint |
| SB380-E3/5BT | 3A/80V rating only; lower VRRM, same DO-214AA package, VF = 0.85 V max | Limited to low-line AC inputs (<120 VAC) or DC-DC front-ends with clamped inputs | Select only for 80–100 V systems where lower VF justifies reduced voltage margin |
Compared with STTH3R08 and SB380-E3/5BT, the S3KB R5G uniquely balances 800 V blocking capability, SMB surface-mount compatibility, and industry-standard thermal performance-making it optimal for compact, high-input-voltage AC/DC converters where layout density and surge robustness are prioritized over ultrafast switching.
Availability
S3KB R5G is available at Aetrix Electronics and suitable for switching mode power supplies, industrial adapters, and LED lighting applications requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance across production volumes.
Supply support for S3KB 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, industrial, and consumer markets since 1979.
The S3KB R5G belongs to TSC's S3x series of standard recovery rectifiers, engineered specifically for cost-effective, high-yield AC/DC front-end rectification in energy-efficient power supplies meeting international safety and environmental standards.
FAQ
What is the maximum junction temperature rating for the S3KB R5G?
The S3KB R5G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet revision M2102. This allows reliable operation in enclosed or high-ambient-temperature environments when thermal design accounts for its 10°C/W junction-to-lead resistance. The S3KB R5G must not exceed this limit during steady-state or transient conditions to ensure long-term reliability.
Does the S3KB R5G have a halogen-free construction?
Yes, the S3KB R5G is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the "Features" section of the Taiwan Semiconductor datasheet. Its molding compound contains no chlorine or bromine-based flame retardants, satisfying strict environmental requirements for export to EU, Japan, and other regulated markets. This halogen-free status applies to the S3KB R5G specifically and is confirmed in the official product documentation.
What does the 'R5G' suffix in S3KB R5G indicate?
The 'R5G' suffix in S3KB R5G denotes Taiwan Semiconductor's internal tape-and-reel packaging and marking variant: 'R5' specifies 3,000-piece tape-and-reel packaging per the ordering information table, and 'G' indicates green compound (halogen-free epoxy). This suffix does not affect electrical parameters-the S3KB R5G shares identical VRRM, IF, VF, and trr specifications with other S3KB variants in DO-214AA packaging.
Is the S3KB R5G suitable for use in a PFC boost diode position?
No, the S3KB R5G is not recommended for PFC boost diode applications due to its 1500 ns reverse recovery time and standard recovery characteristics. PFC stages require fast or ultrafast recovery diodes (e.g., <100 ns trr) to minimize switching losses and EMI. The S3KB R5G is optimized for general-purpose rectification in offline SMPS front-ends-not high-frequency, high-dV/dt PFC circuits where the S3KB R5G would generate excessive heat and noise.
How is polarity identified on the S3KB R5G package?
Polarity on the S3KB R5G is indicated by a visible cathode band printed on the DO-214AA (SMB) package body, consistent with JEDEC standard marking conventions. The banded end corresponds to the cathode terminal, while the opposite end is the anode. This marking is clearly shown in the "Marking Diagram" section of the Taiwan Semiconductor datasheet and is machine-readable for automated optical inspection (AOI) and pick-and-place systems.
S3KB 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):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 800 V
- Capacitance @ Vr, F:
- 40pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S3KB R5G FAQ
1.How can I place an order for S3KB R5G through Aetrix?
Please submit a Request for Quotation (RFQ) for S3KB 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 S3KB R5G reliable?
The price and inventory of S3KB R5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3KB R5G is usually 5 days.
3.What payment methods are accepted for S3KB R5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3KB R5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3KB R5G?
S3KB R5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3KB 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 S3KB R5G?
For technical support, including S3KB R5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3KB R5G requirements.
6.How does Aetrix verify that S3KB R5G is sourced from the original manufacturer or authorized distributors?
All S3KB 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 S3KB R5G meets industry standards.
7.What is the process for return or replacement of S3KB R5G?
All S3KB R5G units undergo pre-shipment inspection (PSI). If there is an issue with S3KB 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 S3KB R5G part is unused and in its original packaging.
Return procedure for S3KB R5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S3KB R5G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
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, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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.
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.
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…
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…
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…
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 …
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…
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…
