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Vishay General Semiconductor - Diodes Division VGSOT15C-G3-18
- Part No.:
- VGSOT15C-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT15C-G3-18.pdf
- Description:
- TVS DIODE 15VWM 28.8VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,942
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Product details
Overview
VGSOT15C-G3-18 from Vishay Semiconductors is a two-line unidirectional ESD protection diode in SOT-23 package, featuring common-anode dual-channel configuration, 15 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2 ESD immunity, and 450 W peak pulse power (8/20 μs). It protects high-speed data lines such as USB 2.0 and HDMI interfaces against electrostatic discharge.
For engineers reviewing the VGSOT15C-G3-18 datasheet, VGSOT15C-G3-18 pinout, VGSOT15C-G3-18 application, or VGSOT15C-G3-18 equivalent, key selection criteria include clamping voltage at 15.5 A (23.5–28.8 V), low 100–120 pF line capacitance at 0 V, AEC-Q101 qualification, bidirectional asymmetrical (BiAs) and symmetrical (BiSy) operating modes, and SOT-23 footprint compatibility with automated assembly.
Technical Context
The VGSOT15C-G3-18 implements a dual-diode common-anode structure enabling two independent signal lines (L1/L2) to share a single ground path. Its BiAs-MODE operation provides asymmetric clamping-reverse breakdown at 16.5–20 V and forward clamping near 1 V-ideal for unidirectional data buses with defined DC bias.
In BiSy-MODE (pin 3 floating), it functions as a single-line bidirectional protector with 15.5 V VRWM and 17–20.7 V VBR, delivering matched positive/negative clamping via series diode conduction. Both modes maintain full ±30 kV ESD immunity per IEC 61000-4-2 and ISO 10605.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | Two-line unidirectional ESD protection diode, common-anode dual-channel |
| VRWM | 15 V maximum reverse working voltage - sets upper DC bias limit before leakage rises |
| VBR (min/typ/max) | 16.5 / 18 / 20 V at 1 mA - defines onset of reverse conduction during transients |
| VC @ IPPM = 15.5 A | 23.5–28.8 V (8/20 μs) - actual clamped voltage seen by protected IC under worst-case surge |
| CD @ VR = 0 V | 100–120 pF - determines high-frequency signal integrity impact on USB/HDMI lines |
| ESD Immunity | ±30 kV contact/air discharge (IEC 61000-4-2 & ISO 10605) - exceeds Level 4 industrial requirements |
| AEC-Q101 Qualified | Yes - validated for automotive under-hood and infotainment applications per stress test conditions |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin surface-mount, 9.2 mg weight, UL 94 V-0 molding compound, MSL level 1, peak reflow ≤ 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 anode | Connects to first protected signal line (e.g., USB D+); conducts transient current to ground when voltage exceeds VBR |
| Pin 2 | Line 2 anode | Connects to second protected signal line (e.g., USB D−); shares common cathode (Pin 3) for compact dual-line layout |
| Pin 3 | Common cathode / ground | Must be connected to system ground plane; serves as return path for both channels in BiAs mode |
Key Features
| Feature | Design Value |
|---|---|
| Dual-line BiAs protection | Enables simultaneous protection of differential pairs (e.g., USB, RS-485) with asymmetric clamping optimized for biased signals |
| BiSy single-line mode | Supports bipolar signal lines (e.g., audio, CAN) using pins 1–2 only; pin 3 left unconnected for symmetrical ±15.5 V standoff |
| Low clamping VF | Forward clamping ≤ 2.2 V at 15.5 A ensures minimal negative overshoot on grounded-referenced lines |
| e3 Sn termination | RoHS-compliant matte tin plating ensures solderability, wire-bond compatibility, and long-term intermetallic stability |
| High surge robustness | Withstands 15.5 A (8/20 μs) and 1.6 A (10/1000 μs) pulses - supports IEC 61000-4-5 Level 3 surge immunity |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Dual-channel transient voltage suppressor placed immediately before USB transceiver IC input pins. Use Value: 100–120 pF capacitance avoids signal integrity degradation at 480 Mbps; 23.5–28.8 V clamping prevents transceiver latch-up. |
Use Scenario: Safeguarding TMDS clock and data channels in HDMI 1.4 receivers against contact discharge. IC Role / Device Role / Timing Role: Common-anode ESD clamp between each TMDS pair and chassis ground. Use Value: Asymmetric BiAs clamping maintains DC bias margin while limiting transient excursion to <29 V, preserving eye diagram integrity. |
| Automotive Infotainment Serial Links | Industrial RS-485 Transceiver Protection |
Use Scenario: Securing LVDS or FPD-Link II video/data lines in automotive head units exposed to ISO 10605 ESD. IC Role / Device Role / Timing Role: AEC-Q101 qualified dual-line protector mounted at connector entry point. Use Value: 150 °C TJ max and ±30 kV immunity meet automotive EMC requirements; SOT-23 footprint enables dense PCB routing. |
Use Scenario: Shielding RS-485 transceiver A/B lines in factory automation gateways from cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional asymmetrical clamp referenced to local ground, handling ±15 V common-mode range. Use Value: 15.5 V VRWM aligns with RS-485 receiver input range; 450 W peak power handles repetitive 1 kV/0.5 J surges per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J15A | Single-line unidirectional TVS; 15 V VRWM; 600 W PPPM; DO-214AC package | Requires two devices for dual-line protection; higher 1.5 nF junction capacitance limits >10 Mbps data rates | Select when board space allows discrete placement per line and cost sensitivity outweighs layout density needs |
| TPD2E001DRSR | Two-line unidirectional ESD array; 5 V VRWM; 0.8 pF typical CD; 200 W PPPM; SOT-23-6 | Lower voltage rating suits 3.3 V logic; ultra-low capacitance targets USB 3.0/PCIe; not AEC-Q101 qualified | Prefer for high-speed consumer interfaces where 15 V standoff is unnecessary and sub-1 pF capacitance is critical |
Compared with SMA6J15A and TPD2E001DRSR, the VGSOT15C-G3-18 uniquely delivers dual-line protection in a 3-pin SOT-23 with AEC-Q101 validation, 15 V standoff, and balanced trade-off between clamping performance (23.5–28.8 V) and line capacitance (100–120 pF), making it optimal for automotive and industrial USB/HDMI applications.
Availability
VGSOT15C-G3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI data lane safeguarding, and automotive infotainment serial links requiring stable component supply across production lifecycles.
Supply support for VGSOT15C-G3-18 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
Vishay Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The VGSOTxxC family was designed specifically for robust, space-efficient ESD protection of high-speed data lines in harsh environments, combining AEC-Q101 qualification, dual-mode operation (BiAs/BiSy), and scalable voltage ratings from 3.3 V to 36 V.
FAQ
What is the maximum reverse working voltage (VRWM) of the VGSOT15C-G3-18?
The VGSOT15C-G3-18 has a maximum reverse working voltage (VRWM) of 15 V, meaning it reliably blocks voltages up to this level in normal operation while maintaining low leakage (<1 μA at 15 V). This rating ensures compatibility with 12–15 V nominal systems like automotive infotainment data buses and industrial RS-485 interfaces without false triggering during steady-state conditions. The VGSOT15C-G3-18 remains fully functional within its specified -55 °C to +150 °C junction temperature range.
How does the VGSOT15C-G3-18 support both BiAs and BiSy protection modes?
The VGSOT15C-G3-18 supports BiAs-MODE (bidirectional asymmetrical) when Pin 3 is grounded and Pins 1 & 2 connect to separate signal lines, providing different clamping thresholds for positive and negative transients. It supports BiSy-MODE (bidirectional symmetrical) when Pin 3 is left unconnected and Pins 1 & 2 form a single protected line, delivering matched clamping in both polarities. This dual-mode flexibility allows one device to serve multiple interface types without redesign. The VGSOT15C-G3-18 achieves both modes using its internal common-anode dual-diode structure.
What is the clamping voltage of the VGSOT15C-G3-18 under a 15.5 A surge?
Under an 8/20 μs peak pulse current of 15.5 A, the VGSOT15C-G3-18 clamps to 23.5–28.8 V, as specified in its absolute maximum ratings table. This value represents the maximum voltage imposed on the protected line during worst-case surge events and is critical for ensuring downstream ICs remain within their absolute maximum input voltage limits. The VGSOT15C-G3-18 achieves this performance while maintaining ±30 kV ESD immunity per IEC 61000-4-2 and ISO 10605 standards.
Is the VGSOT15C-G3-18 qualified for automotive applications?
Yes, the VGSOT15C-G3-18 is AEC-Q101 qualified, having passed stress tests including HTGB, AC/DC life test, temperature cycling, and ESD per human body model class H3B (>8 kV). Its -55 °C to +150 °C operating temperature range, MSL level 1 moisture sensitivity, and e3 matte tin terminations meet automotive manufacturing and reliability requirements. The VGSOT15C-G3-18 is commonly deployed in automotive USB hubs, display link interfaces, and telematics control units.
What is the typical junction capacitance of the VGSOT15C-G3-18 at 0 V bias?
The VGSOT15C-G3-18 exhibits a typical junction capacitance (CD) of 100–120 pF at 0 V reverse bias and 1 MHz, as measured across each channel (Pin 1–3 or Pin 2–3). This value decreases to 43 pF at 7.5 V bias, supporting clean signal transmission on high-speed lines like USB 2.0 (480 Mbps) and HDMI 1.4. The capacitance is low enough to avoid significant signal attenuation while providing effective ESD energy absorption. The VGSOT15C-G3-18's capacitance profile is documented in its electrical characteristics table on page 7 of the Vishay datasheet.
VGSOT15C-G3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.5V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 15.5A (8/20µs)
- Power - Peak Pulse:
- 450W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 100pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT15C-G3-18 FAQ
1.How can I place an order for VGSOT15C-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT15C-G3-18 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 VGSOT15C-G3-18 reliable?
The price and inventory of VGSOT15C-G3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VGSOT15C-G3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT15C-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT15C-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT15C-G3-18?
VGSOT15C-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT15C-G3-18 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 VGSOT15C-G3-18?
For technical support, including VGSOT15C-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT15C-G3-18 requirements.
6.How does Aetrix verify that VGSOT15C-G3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT15C-G3-18 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 VGSOT15C-G3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT15C-G3-18?
All VGSOT15C-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT15C-G3-18, 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 VGSOT15C-G3-18 part is unused and in its original packaging.
Return procedure for VGSOT15C-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT15C-G3-18 Tags
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