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Vishay General Semiconductor - Diodes Division GSOT36C-HE3-18
- Part No.:
- GSOT36C-HE3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT36C-HE3-18.pdf
- Description:
- TVS DIODE 36VWM 71VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,335
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Product details
Overview
GSOT36C-HE3-18 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) per line to ground. It protects high-speed data lines such as USB 2.0 or CAN FD interfaces against transient overvoltage events.
For engineers reviewing the GSOT36C-HE3-18 datasheet, GSOT36C-HE3-18 pinout, GSOT36C-HE3-18 application, or GSOT36C-HE3-18 equivalent, key selection criteria include clamping voltage at 3.5 A (≤71 V), low 26–33 pF capacitance at 1 MHz, AEC-Q101 qualification, RoHS-compliant Sn plating, and dual-mode operation (BiAs/BiSy).
Technical Context
The GSOT36C-HE3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pins 1 and 2 connect to protected signal lines, pin 3 to ground, enabling independent clamping of positive transients (via reverse-biased diodes) and negative transients (via forward conduction). Its asymmetry yields lower forward clamping (~1.3 V at 3.5 A) versus reverse clamping (~59–71 V).
In BiSy-MODE (single-line symmetrical), pin 3 is left unconnected; pins 1 and 2 form a series-connected back-to-back diode pair, delivering matched positive/negative clamping (e.g., 60–72 V at 3.5 A) with 26–33 pF capacitance - suitable for balanced interfaces like RS-485 or LVDS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact/air discharge (IEC 61000-4-2); meets automotive-grade immunity requirements without external filtering. |
| Reverse Stand-off Voltage | 36 V (VRWM); supports 3.3 V, 5 V, 12 V, and 24 V logic/data rails without leakage-induced signal distortion. |
| Peak Pulse Current | 3.5 A per line (IEC 61000-4-5, 8/20 μs); sustains surge energy up to 252 W in line-to-ground configuration. |
| Clamping Voltage | ≤71 V at 3.5 A (line-to-ground); limits downstream IC stress below typical 75 V absolute maximum ratings. |
| Capacitance | 26–33 pF at 1 MHz (VR = 0 V); preserves signal integrity on USB 2.0 (480 Mbps) and CAN FD (5 Mbps) buses. |
| AEC-Q101 Qualified | Qualified per AEC-Q101 Rev D; validated for automotive under-hood and infotainment applications with -55 °C to +150 °C junction range. |
| Package | SOT-23 (JEDEC TO-236AB); footprint-compatible with standard pick-and-place equipment and reflow profiles (peak ≤260 °C). |
Pinout & Package
SOT-23 package: 3-pin surface-mount plastic case (8.8 mg weight, UL 94 V-0 molding compound, MSL Level 1, 260 °C max reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 Anode / Cathode (BiAs) | Connects to first protected signal line (e.g., USB D+); forms one half of dual-channel ESD path to ground. |
| Pin 2 | Line 2 Anode / Cathode (BiAs) | Connects to second protected signal line (e.g., USB D−); enables simultaneous two-line protection with shared ground reference. |
| Pin 3 | Ground Reference (BiAs) / NC (BiSy) | In BiAs mode: common cathode connection to system ground; in BiSy mode: must remain unconnected to enable symmetrical clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line BiAs protection | Enables compact, single-device protection of differential pairs (e.g., CAN, RS-485) without cross-talk or timing skew between channels. |
| Low clamping capacitance | 26–33 pF at 0 V bias ensures minimal signal rise-time degradation on high-speed interfaces up to 500 Mbps. |
| Asymmetrical clamping | Forward clamping ≤1.3 V at 3.5 A prevents negative overshoot beyond ground, critical for CMOS input stage protection. |
| AEC-Q101 qualification | Validated for automotive environments including thermal cycling, humidity, and mechanical shock - no derating required at 125 °C ambient. |
| e3 Sn plating | RoHS-compliant matte tin termination ensures solderability stability and eliminates lead-based contamination risks in production assembly. |
Applications
| Automotive CAN FD Bus Protection | Industrial USB 2.0 Interface |
|---|---|
Use Scenario: Protecting CAN FD transceivers in ADAS domain controllers exposed to load-dump and ESD events during vehicle assembly and service. IC Role / Device Role / Timing Role: Two-line asymmetrical ESD clamp on CANH/CANL differential pair, referenced to chassis ground. Use Value: Maintains <33 pF total capacitance to preserve 5 Mbps bit rate integrity while clamping transients to ≤71 V - within TJA1057G's 75 V abs max rating. |
Use Scenario: Safeguarding USB 2.0 data lines on industrial HMIs subject to frequent operator ESD events in factory-floor environments. IC Role / Device Role / Timing Role: Dual-channel line-to-ground ESD suppressor on D+/D−, operating in BiAs mode with shared ground return. Use Value: Delivers ±30 kV ESD immunity without degrading 480 Mbps signal edge rates due to low 26–33 pF capacitance and sub-1.3 V forward clamping. |
| Telecom RS-485 Transceiver Port | Medical Sensor Data Acquisition |
Use Scenario: Securing long-haul RS-485 nodes in building automation systems where cable runs introduce lightning-induced surges. IC Role / Device Role / Timing Role: BiSy-mode configuration (pin 3 open) providing symmetrical clamping on A/B lines to protect MAX13487E inputs. Use Value: Matches ±72 V clamping at 3.5 A to RS-485 common-mode range (±7 V) and withstands 252 W surge power without thermal runaway. |
Use Scenario: Shielding analog front-end ADC inputs in portable ECG monitors from electrostatic discharge during patient handling. IC Role / Device Role / Timing Role: Single-line BiSy protection on sensor signal path (e.g., electrode lead), leveraging low leakage (<1 μA at 36.5 V). Use Value: Prevents baseline shift or saturation in precision amplifiers via ultra-low IR (≤1 μA) and stable 36.5 V VRWM - compatible with ±5 V supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT36C | Successor device with identical SOT-23 package, same VRWM (36 V), but improved clamping (VC ≤ 65 V @ 3.5 A vs. 71 V) and lower capacitance (22 pF typ). | Drop-in replacement for new designs; not recommended for legacy PCBs requiring exact parametric match to GSOT36C-HE3-18. | Select VGSOT36C for enhanced surge margin and signal integrity in next-generation automotive or industrial designs. |
| SMF36A | Single-line unidirectional TVS (SOD-123), 36 V VRWM, 100 W Ppp, 12.5 A IPPM - higher surge capacity but no dual-line integration. | Requires two devices plus layout area for differential protection; lacks BiAs/BiSy flexibility and adds inter-channel skew risk. | Choose SMF36A only when discrete placement and higher single-pulse robustness outweigh space and routing constraints. |
Compared with VGSOT36C, the GSOT36C-HE3-18 offers proven field reliability and full documentation continuity, while SMF36A delivers greater per-line surge headroom at the cost of board area and design complexity - making GSOT36C-HE3-18 optimal for space-constrained differential interface protection.
Availability
GSOT36C-HE3-18 is available at Aetrix Electronics and suitable for automotive infotainment, industrial USB 2.0 peripherals, and medical sensor interfaces requiring stable component supply through its end-of-life date in January 2025.
Supply support for GSOT36C-HE3-18 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 passive and protection components for automotive, industrial, and computing markets.
The GSOTxxC family was engineered specifically for robust, space-efficient ESD protection of high-speed data lines in harsh environments - emphasizing low capacitance, AEC-Q101 compliance, and dual-mode (BiAs/BiSy) flexibility.
FAQ
What is the maximum operating temperature for the GSOT36C-HE3-18?
The GSOT36C-HE3-18 has a junction temperature range of -55 °C to +150 °C and storage temperature range of -55 °C to +150 °C. This allows reliable operation in under-hood automotive applications and industrial environments with high ambient temperatures. The device maintains specified electrical performance across this full range without derating.
Does the GSOT36C-HE3-18 support both differential and single-ended protection modes?
Yes, the GSOT36C-HE3-18 supports two distinct configurations: BiAs-MODE (pins 1 and 2 to signal lines, pin 3 to ground) for two-line differential protection, and BiSy-MODE (pin 3 unconnected, pins 1 and 2 forming a back-to-back pair) for single-line symmetrical clamping. Both modes are fully characterized in the GSOT36C-HE3-18 datasheet.
What is the reverse leakage current specification for the GSOT36C-HE3-18 at its rated voltage?
The GSOT36C-HE3-18 exhibits a maximum reverse leakage current (IR) of 1 μA at VR = 36 V in two-line mode, and 1 μA at VR = 36.5 V in single-line mode. This ultra-low leakage ensures minimal DC loading on sensitive analog or low-power digital signal paths.
Is the GSOT36C-HE3-18 RoHS-compliant and lead-free?
Yes, the GSOT36C-HE3-18 carries the "HE3" suffix indicating RoHS-compliant, lead-free construction with matte tin (e3) plating. It meets JEDEC J-STD-020 moisture sensitivity level 1 and supports standard Pb-free reflow profiles with peak temperature up to 260 °C.
How does the clamping voltage of the GSOT36C-HE3-18 compare between forward and reverse conduction?
In BiAs-MODE, the GSOT36C-HE3-18 clamps negative transients in forward conduction with VF ≤ 1.3 V at 3.5 A, while positive transients trigger reverse breakdown with VC ≤ 71 V at the same current. This asymmetry provides tighter control over negative excursions - critical for protecting grounded-input receivers.
GSOT36C-HE3-18 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:
- -
- Capacitance @ Frequency:
- 52pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT36C-HE3-18 FAQ
1.How can I place an order for GSOT36C-HE3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT36C-HE3-18 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-HE3-18 reliable?
The price and inventory of GSOT36C-HE3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT36C-HE3-18 is usually 5 days.
3.What payment methods are accepted for GSOT36C-HE3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT36C-HE3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT36C-HE3-18?
GSOT36C-HE3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT36C-HE3-18 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-HE3-18?
For technical support, including GSOT36C-HE3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT36C-HE3-18 requirements.
6.How does Aetrix verify that GSOT36C-HE3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT36C-HE3-18 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-HE3-18 meets industry standards.
7.What is the process for return or replacement of GSOT36C-HE3-18?
All GSOT36C-HE3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT36C-HE3-18, 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-HE3-18 part is unused and in its original packaging.
Return procedure for GSOT36C-HE3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT36C-HE3-18 Tags
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