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Taiwan Semiconductor Corporation S3GB-K
- Part No.:
- S3GB-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S3GB-K.pdf
- Description:
- 3A, 400V, STANDARD RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:9,856
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Product details
Overview
S3GB-K from Taiwan Semiconductor is a 3A, 400V repetitive peak reverse voltage (VRRM) standard surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring glass-passivated junction, low reverse leakage (≤5 µA @ 25°C), and 80A surge capability (t = 8.3 ms), used in DC-DC converters and switching-mode inverters.
For engineers reviewing the S3GB-K datasheet, S3GB-K pinout, S3GB-K application, or S3GB-K equivalent, key selection criteria include VRRM = 400 V, IF = 3 A continuous, VF ≤ 0.93 V @ 3 A / 25°C, thermal resistance RθJL = 20 °C/W, and SMB package compatibility with automated placement.
Technical Context
The S3GB-K is a single-die, unidirectional standard recovery rectifier optimized for medium-voltage power conversion. Its glass-passivated junction ensures stable reverse characteristics across -55°C to +150°C operating range, and its DO-214AA (SMB) package supports high-density PCB layouts with J-STD-002 solderability and JESD 201 Class 1 whisker resistance.
Electrical behavior is defined by forward voltage of 0.93 V max at 3 A/25°C and 0.99 V max at 3 A/125°C, reverse current ≤300 µA at 125°C, and junction capacitance of 60 pF at 4 V reverse bias - parameters critical for EMI control and efficiency in high-frequency switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking voltage; defines safe DC/peak AC input voltage limit in bridge or freewheeling applications |
| IF | 3 A - average forward current rating at TL = 75°C on 10 mm × 10 mm Cu pad; sets continuous power-handling capacity |
| IFSM | 80 A - non-repetitive surge current (8.3 ms half-sine); determines short-circuit robustness in SMPS startup/fault conditions |
| VF | 0.93 V max @ 3 A, 25°C - forward conduction loss directly impacts conduction efficiency and thermal rise in high-duty-cycle operation |
| TJ max | +150°C - maximum junction temperature; enables operation in thermally constrained industrial environments without derating |
| RθJL | 20 °C/W - junction-to-lead thermal resistance; enables direct heat transfer to PCB copper, supporting compact thermal design |
| CJ | 60 pF @ 1 MHz, 4 V - junction capacitance affects high-frequency switching losses and EMI filter sizing in >100 kHz converters |
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 1 whisker resistance; UL 94V-0 molding compound; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter); polarity must match PCB silkscreen marking |
| Cathode | Forward current exit point | Marked by band; connects to higher-potential rail (e.g., output capacitor positive); defines unidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable reverse leakage (<5 µA @ 25°C) and long-term reliability under humidity and thermal cycling stress |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; supports standard SMT assembly without special handling |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS directives; suitable for environmentally regulated industrial and consumer end equipment |
| Automated placement compatibility | DO-214AA (SMB) footprint and lead geometry conform to IPC-7351B standards for pick-and-place accuracy and yield |
Applications
| DC-DC Converters | Switching Inverters |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 12–48 V outputs at up to 36 W. IC Role / Device Role / Timing Role: Unidirectional power conversion element conducting during transformer reset phase; replaces synchronous MOSFET where cost and simplicity are prioritized. Use Value: Low VF (0.93 V max) minimizes conduction loss; 400 V VRRM accommodates reflected voltage spikes in 24 V input systems. | Use Scenario: Freewheeling diode in H-bridge motor drives or solar microinverters operating at 10–50 kHz switching frequency. IC Role / Device Role / Timing Role: Clamp inductive kickback and provide current recirculation path during PWM off-time; operates in standard recovery mode with predictable turn-off tail. Use Value: 80 A IFSM withstands motor stall surges; 60 pF CJ limits capacitive coupling noise in gate-drive loops. |
| Industrial Power Supplies | General-Purpose Rectification |
Use Scenario: Input bridge rectification in 100–240 VAC front-end supplies for PLCs and HMIs with 3 A average load demand. IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier in discrete AC-DC stages; leverages SMB footprint for high-power density versus through-hole alternatives. Use Value: RθJL = 20 °C/W enables direct thermal coupling to heatsink pads; 150°C TJ max supports operation in sealed enclosures. | Use Scenario: Reverse-polarity protection and bulk rectification in battery-powered instrumentation and sensor nodes. IC Role / Device Role / Timing Role: Polarity guard and AC-to-DC conversion element; cathode band provides unambiguous orientation for manual or automated assembly. Use Value: ≤5 µA reverse leakage at 25°C preserves standby battery life; moisture level 1 simplifies inventory management and line setup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L04S | VRRM = 400 V, IF = 3 A, VF = 0.95 V @ 3 A, RθJA = 65 °C/W (SMB) | Higher VF and slightly lower thermal performance; same SMB footprint | Select when STMicroelectronics supply chain alignment is required; verify layout thermal margin due to higher RθJA |
| ES3G | VRRM = 400 V, IF = 3 A, VF = 0.92 V @ 3 A, RθJL = 22 °C/W (SMB) | Near-identical electrical specs; minor thermal resistance difference (22 vs. 20 °C/W) | Drop-in alternative with comparable forward loss and thermal behavior; validated for same PCB land pattern |
Compared with STTH3L04S and ES3G, the S3GB-K offers the lowest RθJL (20 °C/W) and tightest VF spec (0.93 V max), making it preferable for thermally constrained or efficiency-critical 3 A rectification tasks where junction temperature margin is limited.
Availability
S3GB-K is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for S3GB-K 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and consumer markets.
The S3GB-K belongs to TSC's S3x series of standard surface-mount rectifiers, designed specifically for cost-sensitive, high-volume power conversion applications demanding reliable 3 A current handling and robust 400 V reverse blocking in compact SMB packages.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the S3GB-K?
The S3GB-K has a VRRM rating of 400 V, as specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version D2102). This value is fixed per part number and distinguishes S3GB-K from other variants in the S3x family (e.g., S3DB-K = 200 V, S3JB-K = 600 V). Exceeding 400 V risks irreversible avalanche breakdown.
Does the S3GB-K have a RoHS-compliant and halogen-free construction?
Yes, the S3GB-K meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, as confirmed in the FEATURES section of the Taiwan Semiconductor documentation. The molding compound is UL 94V-0 rated, and terminals are matte tin-plated - all verified for compliance in Version D2102.
What is the forward voltage (VF) of the S3GB-K at 3 A and 25°C?
The S3GB-K exhibits a maximum forward voltage of 0.93 V at IF = 3 A and TJ = 25°C, with a typical value of 0.88 V under the same conditions. These values are measured per pulse test (PW = 0.3 ms) and are documented in the ELECTRICAL SPECIFICATIONS table of the S3GB-K datasheet.
Can the S3GB-K be used in automated SMT assembly lines?
Yes, the S3GB-K is explicitly designed for automated placement, as stated in its FEATURES list. It carries moisture sensitivity level 1 (per J-STD-020), requires no pre-bake, and its DO-214AA (SMB) package conforms to standard pick-and-place tolerances and J-STD-002 solderability requirements.
What is the junction-to-lead thermal resistance (RθJL) of the S3GB-K?
The S3GB-K has a typical junction-to-lead thermal resistance of 20 °C/W, measured under standard test conditions (mounted on 10 mm × 10 mm Cu pad). This parameter is critical for estimating temperature rise from power dissipation and is listed in the THERMAL PERFORMANCE section of the official datasheet.
S3GB-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 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):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S3GB-K FAQ
1.How can I place an order for S3GB-K through Aetrix?
Please submit a Request for Quotation (RFQ) for S3GB-K 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 S3GB-K reliable?
The price and inventory of S3GB-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3GB-K is usually 5 days.
3.What payment methods are accepted for S3GB-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3GB-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3GB-K?
S3GB-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3GB-K 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 S3GB-K?
For technical support, including S3GB-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3GB-K requirements.
6.How does Aetrix verify that S3GB-K is sourced from the original manufacturer or authorized distributors?
All S3GB-K 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 S3GB-K meets industry standards.
7.What is the process for return or replacement of S3GB-K?
All S3GB-K units undergo pre-shipment inspection (PSI). If there is an issue with S3GB-K, 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 S3GB-K part is unused and in its original packaging.
Return procedure for S3GB-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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