My Inquiry
My Account
Vishay General Semiconductor - Diodes Division GSOT15C-G3-18
- Part No.:
- GSOT15C-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT15C-G3-18.pdf
- Description:
- TVS DIODE 15VWM 28.8VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,304
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
GSOT15C-G3-18 from Vishay Semiconductors is a two-line bidirectional ESD protection diode in SOT-23 package, rated for ±30 kV IEC 61000-4-2 contact/air discharge, 15 V reverse stand-off voltage (VRWM), and 8 A peak pulse current (IPPM). It protects high-speed data lines such as USB 2.0 or RS-485 interfaces against transient overvoltage events.
For engineers reviewing the GSOT15C-G3-18 datasheet, GSOT15C-G3-18 pinout, GSOT15C-G3-18 application, or GSOT15C-G3-18 equivalent, key selection criteria include clamping voltage at 8 A (24.8–28.8 V), low 45–60 pF line-to-line capacitance, AEC-Q101 qualification status, and BiAs/BiSy dual-mode configuration flexibility.
Technical Context
The GSOT15C-G3-18 implements BiAs-MODE (bidirectional asymmetrical) protection when pin 3 is grounded and pins 1/2 connect to protected signal lines - delivering distinct forward (≤1.8 V @ 8 A) and reverse (≤28.8 V @ 8 A) clamping. It also supports BiSy-MODE (bidirectional symmetrical) with pin 3 unconnected and pins 1/2 used as line-to-ground - enabling single-line protection with matched positive/negative clamping.
Its SOT-23 package complies with MSL level 1 per J-STD-020, supports peak reflow up to 260 °C, and uses Sn (e3) termination. The device meets AEC-Q101 stress testing requirements and exhibits ≤1 μA reverse leakage at 15 V VRWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD immunity | ±30 kV contact/air discharge per IEC 61000-4-2 - ensures robust system-level ESD survivability in consumer and automotive environments. |
| Reverse stand-off voltage | 15 V (VRWM) - defines maximum continuous operating voltage before conduction begins; matches 12 V nominal bus systems with margin. |
| Peak pulse current | 8 A (IPPM, 8/20 μs) - determines surge handling capability for IEC 61000-4-5 induced transients on data lines. |
| Clamping voltage | 24.8–28.8 V @ 8 A (reverse), ≤1.8 V @ 8 A (forward) - defines worst-case voltage seen by protected IC during surge, critical for downstream IC voltage tolerance. |
| Capacitance | 45–60 pF @ 0 V (line-to-line), 25 pF @ 7.5 V - low enough for USB 2.0 (≤60 pF) and RS-485 (≤100 pF) without signal integrity degradation. |
| Leakage current | ≤1 μA @ 15 V - minimizes power loss and avoids false triggering in high-impedance sensing or battery-powered circuits. |
| Operating temperature | −55 °C to +150 °C - supports under-hood automotive, industrial control, and extended-environment applications. |
Pinout & Package
SOT-23 package: 3-pin, surface-mount, e3 (Sn) plating, MSL level 1, 8.8 mg weight, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 anode / cathode | Connects to first protected signal line (L1); forms one half of dual-channel ESD path to ground (pin 3) or second line (pin 2). |
| Pin 2 | Line 2 anode / cathode | Connects to second protected signal line (L2); symmetrically configured with pin 1 for balanced two-line protection. |
| Pin 3 | Ground reference | Must be connected to system ground in BiAs mode; left floating in BiSy mode for single-line operation. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line ESD protection | Simultaneously safeguards differential or parallel data lines (e.g., D+/D−) with shared ground return, reducing component count vs. discrete diodes. |
| Bidirectional asymmetrical (BiAs) mode | Enables low forward-voltage clamping (~1.8 V) for negative transients while maintaining higher reverse clamping (≤28.8 V) - ideal for mixed-signal interfaces with asymmetric voltage rails. |
| Bidirectional symmetrical (BiSy) mode | Supports single-line protection with matched clamping in both polarities when pin 3 is unused - simplifies layout for UART, CAN, or GPIO lines. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD stress - suitable for ADAS, infotainment, and body electronics. |
| Low capacitance & leakage | 45–60 pF line-to-line capacitance and ≤1 μA IR at VRWM preserve signal integrity and minimize standby power in high-speed or battery-critical designs. |
Applications
| USB 2.0 Interface Protection | Automotive LIN Bus |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports in automotive infotainment head units against ESD events during connector insertion or cable handling. IC Role / Device Role / Timing Role: Two-line transient voltage suppressor placed between connector and USB transceiver IC, operating in BiAs mode with pin 3 grounded. Use Value: Maintains <60 pF total line capacitance to preserve 480 Mbps signaling integrity while clamping surges to ≤28.8 V - within USB PHY absolute maximum ratings. | Use Scenario: Safeguarding LIN bus master/slave nodes in vehicle door modules or seat controllers against load dump-induced transients and ESD. IC Role / Device Role / Timing Role: Single-line BiSy-mode protector on LIN signal line (pin 1 to LIN, pin 2 to ground, pin 3 open), leveraging 15.5 V VRWM to tolerate 12 V system variations. Use Value: Ensures reliable communication under −55 °C to +150 °C ambient with ≤1 μA leakage - preventing bus contention and false wake-up in low-power sleep modes. |
| Industrial RS-485 Transceivers | Smart Sensor Signal Conditioning |
Use Scenario: Protecting A/B differential pair of RS-485 transceivers in factory automation PLC I/O modules exposed to long cable runs and noisy plant environments. IC Role / Device Role / Timing Role: Dual-channel ESD clamp (pins 1/2 to A/B, pin 3 to ground) limiting voltage excursion during 8/20 μs surges up to 8 A. Use Value: Delivers 24.8–28.8 V clamping at full IPPM, keeping transceiver inputs within safe operating area while adding only 45–60 pF loading - no data rate derating required. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA or 0–10 V) of industrial pressure/temperature sensors from ESD during field wiring or maintenance. IC Role / Device Role / Timing Role: BiSy-mode protector on sensor output line (pin 1 to signal, pin 2 to ground, pin 3 open), using 15.5 V VRWM to accommodate supply headroom. Use Value: Adds negligible error (<0.01% FS) due to ≤1 μA leakage and avoids signal distortion with sub-60 pF capacitance - preserving measurement accuracy in precision instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT15C-G3-18 | Successor device with identical SOT-23 footprint, same 15 V VRWM and ±30 kV ESD rating, but improved thermal performance and extended lifecycle beyond January 2025. | Drop-in replacement for new designs; requires no PCB change but offers longer-term supply assurance. | Select for production programs requiring post-2025 availability and enhanced surge robustness. |
| TPD2E001DRYR | TI dual-channel ESD protector with 5.5 V VRWM, 10 pF typical capacitance, and lower 1.5 A IPPM - optimized for high-speed digital interfaces like HDMI or MIPI. | Not suitable for 12–24 V bus systems due to lower VRWM; better for low-voltage, ultra-high-speed applications. | Choose only when protecting 3.3 V logic lines where ultra-low capacitance is prioritized over high-voltage surge handling. |
Compared with VGSOT15C-G3-18, the GSOT15C-G3-18 offers identical electrical specs and pinout but reaches end-of-life in January 2025; compared with TPD2E001DRYR, it provides higher VRWM and IPPM at the cost of higher capacitance - making it preferable for industrial and automotive 12 V+ data buses.
Availability
GSOT15C-G3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive LIN bus safeguarding, and industrial RS-485 transceiver applications requiring stable component supply through Q4 2024.
Supply support for GSOT15C-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 and passive components, specializing in high-reliability devices for automotive, industrial, and computing markets.
The GSOTxxC family was engineered specifically for compact, high-efficiency ESD protection of data and signal lines in space-constrained and thermally demanding environments - emphasizing AEC-Q101 compliance, low clamping, and dual-mode flexibility.
FAQ
What is the maximum operating temperature range for the GSOT15C-G3-18?
The GSOT15C-G3-18 supports junction temperatures from −55 °C to +150 °C, validated per AEC-Q101 requirements. This range enables deployment in under-hood automotive locations, industrial motor drives, and outdoor equipment where ambient extremes exceed standard commercial limits. The GSOT15C-G3-18 maintains specified clamping and leakage performance across this full span.
Can the GSOT15C-G3-18 be used for single-line protection?
Yes, the GSOT15C-G3-18 supports BiSy-MODE (bidirectional symmetrical) operation with pin 3 left unconnected and pins 1/2 used as line-to-ground - delivering matched clamping for both polarities. In this configuration, its 15.5 V VRWM and ≤26.6 V clamping at 8 A make it suitable for LIN, CAN, or GPIO protection without requiring external biasing.
What is the reverse leakage current specification for the GSOT15C-G3-18 at its rated VRWM?
The GSOT15C-G3-18 exhibits ≤1 μA reverse leakage current at 15 V VRWM and 25 °C, per its electrical characteristics table. This low leakage ensures minimal impact on high-impedance sensor outputs or battery-powered circuits, preserving accuracy and extending operational life - a key advantage over higher-leakage alternatives in precision analog applications.
How does the GSOT15C-G3-18 achieve bidirectional asymmetrical clamping?
The GSOT15C-G3-18 achieves BiAs-MODE clamping via internal dual-diode architecture: when pin 3 is grounded, pins 1 and 2 each form independent cathode-to-ground paths. Negative transients conduct through the forward-biased diode (VF ≤1.8 V @ 8 A), while positive transients trigger reverse breakdown (VC ≤28.8 V @ 8 A), yielding inherently asymmetrical voltage limiting essential for mixed-rail interfaces.
Is the GSOT15C-G3-18 RoHS-compliant and lead-free?
Yes, the GSOT15C-G3-18 carries the "G3" environmental code indicating RoHS-compliant, lead (Pb)-free construction with pure tin (e3) plating. It meets JEDEC J-STD-020 MSL level 1 moisture sensitivity requirements and supports peak reflow temperatures up to 260 °C - fully compatible with modern lead-free assembly processes.
GSOT15C-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:
- Last Time Buy
- 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):
- 8A (8/20µs)
- Power - Peak Pulse:
- 345W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 90pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT15C-G3-18 FAQ
1.How can I place an order for GSOT15C-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT15C-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 GSOT15C-G3-18 reliable?
The price and inventory of GSOT15C-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 GSOT15C-G3-18 is usually 5 days.
3.What payment methods are accepted for GSOT15C-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT15C-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT15C-G3-18?
GSOT15C-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT15C-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 GSOT15C-G3-18?
For technical support, including GSOT15C-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT15C-G3-18 requirements.
6.How does Aetrix verify that GSOT15C-G3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT15C-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 GSOT15C-G3-18 meets industry standards.
7.What is the process for return or replacement of GSOT15C-G3-18?
All GSOT15C-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT15C-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 GSOT15C-G3-18 part is unused and in its original packaging.
Return procedure for GSOT15C-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT15C-G3-18 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
