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Vishay General Semiconductor - Diodes Division GSOT36C-G3-18
- Part No.:
- GSOT36C-G3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT36C-G3-18.pdf
- Description:
- TVS DIODE 36VWM 71VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,820
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Product details
Overview
GSOT36C-G3-18 from Vishay Semiconductors is a two-line bidirectional asymmetrical ESD protection diode in SOT-23 package, rated for ±30 kV IEC 61000-4-2 contact/air discharge, 36 V reverse stand-off voltage (VRWM), and 3.5 A peak pulse current (IPPM). It protects high-speed data lines such as USB 2.0 or CAN FD interfaces against transient overvoltage events.
For engineers reviewing the GSOT36C-G3-18 datasheet, GSOT36C-G3-18 pinout, GSOT36C-G3-18 application, or GSOT36C-G3-18 equivalent, this page delivers verified electrical characteristics, BiAs/BiSy dual-mode operation details, clamping behavior under 8/20 µs surge, capacitance vs. bias curves, and AEC-Q101-qualified alternatives for automotive and industrial interface protection.
Technical Context
The GSOT36C-G3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection when pin 3 is grounded and pins 1/2 protect two independent signal lines - delivering different forward (VF ≈ 1.3 V @ 3.5 A) and reverse (VC ≈ 59–71 V @ 3.5 A) clamping voltages. Its low 26–33 pF capacitance at VR = 0 V enables use on 480 Mbps USB 2.0 lines without signal integrity degradation.
In BiSy-MODE (single-line symmetrical), pin 3 is left unconnected and pins 1–2 form a bipolar clamp with matched positive/negative clamping (VC ≈ 60–72 V @ 3.5 A), supporting CAN FD or RS-485 bus protection where balanced transients dominate. Both modes operate across –55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact & air discharge per IEC 61000-4-2 - meets Level 4 system-level ESD immunity for automotive infotainment and industrial HMI ports. |
| Reverse Stand-off Voltage (VRWM) | 36 V - supports protection of 24 V industrial control I/O and 3.3/5 V logic interfaces without leakage-induced false triggering. |
| Peak Pulse Current (IPPM) | 3.5 A per line (8/20 µs) - handles typical lightning-induced surges in sensor nodes and fieldbus terminations. |
| Clamping Voltage (VC) | 59–71 V @ IPPM = 3.5 A (pin 1–3 or 2–3) - limits transient voltage to safe levels for downstream 36 V-rated transceivers. |
| Capacitance (CD) | 26–33 pF @ 0 V, 1 MHz - preserves signal rise time on USB 2.0, HDMI DDC, and I²C buses without added jitter. |
| Operating Temperature | –55 °C to +150 °C - qualified for under-hood automotive ECUs and industrial motor drives with extended thermal cycling. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTGB, TCT, and ESD stress testing per AEC standard. |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin, e3 Sn-plated, MSL level 1, 260 °C peak reflow compatible. Dimensions: 2.9 × 1.3 × 1.0 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 Anode/Cathode | Connects to first protected signal line (e.g., USB D+); forms one half of BiAs dual-channel clamp. |
| Pin 2 | Line 2 Anode/Cathode | Connects to second protected signal line (e.g., USB D−); symmetrically matched to Pin 1 for differential pair protection. |
| Pin 3 | Ground Reference | Must be connected to system ground in BiAs mode; left floating in BiSy mode for single-line bipolar clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line BiAs protection | Enables simultaneous protection of differential pairs (e.g., USB, CAN) with asymmetric clamping that matches signal swing polarity. |
| Single-line BiSy protection | Supports legacy RS-232/RS-485 bus protection using same device by floating pin 3 - eliminates need for separate symmetrical TVS. |
| Low leakage current | IR ≤ 1 μA @ 36 V ensures minimal power drain on battery-backed sensors and always-on communication modules. |
| Green RoHS-compliant | e3 Sn plating and halogen-free molding compound meet IPC-1752A material declaration requirements for automotive Tier 1 supply chains. |
| High surge robustness | 248–252 W peak pulse power (8/20 µs) withstands repeated EFT bursts per IEC 61000-4-4 without parameter shift. |
Applications
| USB 2.0 Interface Protection | Automotive CAN FD Bus |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines on infotainment head units exposed to user-hand ESD events during cable insertion. IC Role / Device Role / Timing Role: Two-line ESD clamp operating in BiAs mode with pin 3 grounded, limiting transients before they reach the USB PHY. Use Value: 26–33 pF capacitance avoids signal integrity loss at 480 Mbps; ±30 kV rating exceeds IEC 61000-4-2 Level 4 requirement. |
Use Scenario: Safeguarding CAN FD transceivers in ADAS domain controllers subjected to load dump and ESD in vehicle harnesses. IC Role / Device Role / Timing Role: Dual-channel transient suppressor placed at connector entry point, clamping common-mode surges between CANH/CANL and chassis ground. Use Value: 36 V VRWM accommodates CAN FD's 30 V common-mode range; AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime. |
| Industrial RS-485 Node | Smart Sensor Signal Conditioning |
Use Scenario: Protecting RS-485 transceiver inputs in factory automation PLC I/O modules exposed to 4 kV EFT noise on long field cables. IC Role / Device Role / Timing Role: Single-line BiSy configuration (pins 1–2 only, pin 3 open) providing symmetrical clamping on A/B differential lines. Use Value: Matched positive/negative VC (60–72 V @ 3.5 A) prevents receiver saturation during bidirectional transients; –55 °C to +150 °C operation suits harsh environments. |
Use Scenario: Shielding analog front-end inputs of MEMS pressure sensors in HVAC control systems from board-level ESD during handling and assembly. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) clamp on sensor output lines, preserving microamp-level bias currents in precision amplifiers. Use Value: 36 V VRWM allows direct placement after 24 V supply-referenced signal conditioning stages; SOT-23 footprint minimizes PCB area in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT36C-G3-18 | Successor series with identical SOT-23 footprint, same VRWM (36 V), but improved clamping uniformity and extended AEC-Q101 test coverage. | Drop-in replacement for new designs; requires no layout change but offers enhanced surge consistency per production lot. | Select for new automotive programs requiring full PPAP support and extended lifecycle beyond January 2025 EOL date of GSOT36C-G3-18. |
| SMF36AHE3_A/H | Single-line 36 V TVS diode (SOD-123FL), 3.5 A IPPM, but no dual-line capability or BiSy mode; higher CD (≈50 pF). | Limited to single-wire protection; unsuitable for differential bus protection without pairing two devices and doubling capacitance. | Use only when protecting isolated signals (e.g., GPIO, reset line) where dual-channel integration is unnecessary and cost-per-line is prioritized. |
Compared with GSOT36C-G3-18, VGSOT36C-G3-18 provides guaranteed continuity and enhanced test coverage for automotive programs, while SMF36AHE3_A/H trades integration and mode flexibility for lower unit cost in non-differential applications.
Availability
GSOT36C-G3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive CAN FD bus safeguarding, and industrial RS-485 node hardening requiring stable component supply through its End of Life in January 2025.
Supply support for GSOT36C-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 GSOTxxC family was engineered specifically for high-density, low-capacitance ESD protection of high-speed serial interfaces - balancing surge robustness, signal fidelity, and AEC-Q101 compliance in miniature SOT-23 packages.
FAQ
What is the maximum operating temperature for GSOT36C-G3-18?
The GSOT36C-G3-18 has a specified junction temperature range of –55 °C to +150 °C, making it suitable for under-hood automotive applications and industrial environments with extreme thermal cycling. This rating is validated per AEC-Q101 stress tests including high-temperature operating life and temperature cycling.
Does GSOT36C-G3-18 support both differential and single-ended protection modes?
Yes, GSOT36C-G3-18 supports two distinct configurations: BiAs-MODE (pins 1 & 2 to signal lines, pin 3 grounded) for two-line differential protection, and BiSy-MODE (pins 1 & 2 only, pin 3 open) for single-line symmetrical clamping. Both modes are fully characterized in the official Vishay datasheet Rev. 3.0.
What is the clamping voltage of GSOT36C-G3-18 at its rated peak pulse current?
At IPPM = 3.5 A (8/20 µs waveform), the reverse clamping voltage (VC) of GSOT36C-G3-18 is 59–71 V when measured between pin 1–3 or pin 2–3. In BiSy mode (pin 1–2), VC is 60–72 V under identical conditions - values confirmed in the "ELECTRICAL CHARACTERISTICS GSOT36C" section of document 85824.
Is GSOT36C-G3-18 qualified to AEC-Q101 standards?
Yes, GSOT36C-G3-18 is AEC-Q101 qualified. The qualification includes stress tests for high-temperature reverse bias, temperature cycling, mechanical shock, and ESD - all performed per the AEC-Q101-001 and AEC-Q101-004 standards. This is explicitly stated in the "FEATURES" section and "PACKAGE DATA" table of the Vishay document.
What is the capacitance of GSOT36C-G3-18 at zero bias and 1 MHz?
The typical capacitance of GSOT36C-G3-18 is 26–33 pF at VR = 0 V and f = 1 MHz, as specified in the "ELECTRICAL CHARACTERISTICS GSOT36C" table for the pin 1–2 configuration (BiSy mode). For BiAs mode (pin 1–3 or 2–3), CD is 52–65 pF under the same conditions.
GSOT36C-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):
- 36V (Max)
- Voltage - Breakdown (Min):
- 39V
- Voltage - Clamping (Max) @ Ipp:
- 71V
- Current - Peak Pulse (10/1000µs):
- 3.5A (8/20µs)
- Power - Peak Pulse:
- 248W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 52pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT36C-G3-18 FAQ
1.How can I place an order for GSOT36C-G3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT36C-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 GSOT36C-G3-18 reliable?
The price and inventory of GSOT36C-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 GSOT36C-G3-18 is usually 5 days.
3.What payment methods are accepted for GSOT36C-G3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT36C-G3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT36C-G3-18?
GSOT36C-G3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT36C-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 GSOT36C-G3-18?
For technical support, including GSOT36C-G3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT36C-G3-18 requirements.
6.How does Aetrix verify that GSOT36C-G3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT36C-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 GSOT36C-G3-18 meets industry standards.
7.What is the process for return or replacement of GSOT36C-G3-18?
All GSOT36C-G3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT36C-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 GSOT36C-G3-18 part is unused and in its original packaging.
Return procedure for GSOT36C-G3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT36C-G3-18 Tags
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