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Vishay General Semiconductor - Diodes Division GSOT24C-HE3-18
- Part No.:
- GSOT24C-HE3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT24C-HE3-18.pdf
- Description:
- TVS DIODE 24VWM 47VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:75,360
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Product details
Overview
GSOT24C-HE3-18 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, 24 V reverse stand-off voltage (VRWM), and 5 A peak pulse current (IPPM). It delivers asymmetrical clamping (BiAs-mode) with 41 V max clamping at 5 A for data line protection in automotive infotainment interfaces.
For engineers reviewing the GSOT24C-HE3-18 datasheet, GSOT24C-HE3-18 pinout, GSOT24C-HE3-18 application, or GSOT24C-HE3-18 equivalent, key selection criteria include its 24 V VRWM, 41 V clamping at 5 A, 65–80 pF capacitance at 0 V, SOT-23 footprint compatibility, and AEC-Q101 qualification status for automotive use.
Technical Context
The GSOT24C-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 breakdown (VBR = 27–33 V) and negative transients via forward conduction (VF ≤ 1.4 V at 5 A). Its dual-diode structure supports parallel operation to double surge capability.
In BiSy-MODE (single-line symmetrical), pin 3 is left unconnected, and pins 1–2 form a bipolar clamp with 24.5 V VRWM and 40–48 V clamping at 5 A. Both modes operate across –55 °C to +150 °C junction temperature, meeting AEC-Q101 stress requirements including HBM >8 kV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - withstands worst-case handheld ESD events without degradation. |
| VRWM | 24 V - blocks normal 24 V system signals while triggering only on overvoltage transients. |
| IPPM | 5 A (8/20 μs) - handles moderate surge energy in industrial control I/O and automotive sensor lines. |
| VC @ IPPM | 41–47 V - limits transient voltage to safe levels for 24 V logic and interface ICs (e.g., CAN transceivers). |
| Capacitance | 65–80 pF @ 0 V - low enough for USB 2.0 or RS-485 data rates up to ~20 Mbps without signal integrity loss. |
| Operating Temp | –55 °C to +150 °C - qualified for under-hood automotive and industrial environments. |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HBM, and mechanical shock. |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin surface-mount, 2.8 × 2.35 × 1.15 mm body, e3 Sn plating, MSL Level 1, peak reflow ≤260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Connects to first protected signal line (L1); forms one half of BiAs protection path to ground (pin 3). |
| Pin 2 | Anode of Diode 2 | Connects to second protected signal line (L2); forms second half of BiAs protection path to ground (pin 3). |
| Pin 3 | Cathode Common | Must be connected to system ground; provides return path for both clamping currents in BiAs mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Asymmetrical Clamping (BiAs) | Enables separate optimization for positive (reverse breakdown) and negative (forward conduction) transients - reduces clamping voltage for negative spikes to ≤1.4 V. |
| Parallel Operation Support | Two GSOT24C-HE3-18 units can be paralleled to double IPPM to 10 A and halve effective series impedance - lowers clamping voltage by ~10% under surge. |
| Low-Leakage Protection | IR ≤ 1 μA at 24 V - prevents signal distortion or bias shift in high-impedance sensor interfaces like thermocouple or RTD inputs. |
| Automotive-Grade Packaging | e3 matte tin plating and MSL Level 1 rating ensure robust solderability and long-term reliability in automotive production environments. |
| Green Compliance | RoHS-compliant, lead-free, halogen-free molding compound (UL 94 V-0) - meets global environmental regulations without performance trade-offs. |
Applications
| Automotive Infotainment Data Lines | Industrial PLC Analog Inputs |
|---|---|
Use Scenario: Protecting LVDS or FPD-Link III video bus lines between head unit and display in vehicles exposed to ESD during service or assembly. IC Role / Device Role / Timing Role: Two-line ESD clamp placed directly at connector entry point, shunting transients before they reach serializer/deserializer ICs. Use Value: Maintains signal integrity with 65–80 pF capacitance while clamping to ≤47 V - prevents latch-up or damage to 24 V tolerant SerDes receivers. | Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field-induced surges and human-body ESD. IC Role / Device Role / Timing Role: Front-end transient suppressor on analog input channel, operating in BiAs mode with pin 3 grounded. Use Value: 24 V VRWM matches common loop supply rails; 5 A IPPM handles typical industrial surge threats; <1 μA leakage avoids measurement error in μA-level sensing. |
| Automotive Body Control Module I/O | Medical Sensor Interface Protection |
Use Scenario: Safeguarding LIN bus or wake-up lines in door modules and seat controllers against cable discharge events. IC Role / Device Role / Timing Role: Bidirectional clamp on single-wire LIN line using BiSy configuration (pin 3 floating, pins 1–2 across line). Use Value: 24.5 V VRWM accommodates 12 V/24 V dual-voltage architectures; 40–48 V clamping ensures MCU GPIO survival during ISO 10605 testing. | Use Scenario: Protecting differential analog outputs from patient-connected biosensors (e.g., ECG, EEG) against operator ESD in hospital equipment. IC Role / Device Role / Timing Role: Dual-channel ESD guard on isolated analog front-end, leveraging BiAs mode for low forward-voltage clamping on negative transients. Use Value: ≤1.4 V VF at 5 A minimizes disturbance to microvolt-level bio-signals; 150 °C rating supports sterilization cycle compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT24C-G3-18 | Same electrical specs and SOT-23 package; green (halogen-free) molding compound vs. standard UL 94 V-0 compound in GSOT24C-HE3-18. | No functional difference; selected when RoHS+halogen-free compliance is mandatory beyond baseline RoHS. | Drop-in replacement where green material certification is required; identical layout and thermal behavior. |
| SMF24A-T | Single-line 24 V TVS (SOD-123), 5.5 A IPPM, 44 V VC, 100 pF - higher capacitance, no dual-line integration. | Requires two devices for two-line protection; lacks integrated dual-diode architecture and BiAs functionality. | Use only when dual-line integration is unnecessary and board space allows discrete placement of two SOD-123 devices. |
Compared with VGSOT24C-G3-18, GSOT24C-HE3-18 offers identical protection performance but uses standard molding compound; compared with SMF24A-T, GSOT24C-HE3-18 saves PCB area and enables true two-line coordinated clamping, critical for differential or paired signal integrity.
Availability
GSOT24C-HE3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC analog inputs, and medical sensor interfaces requiring stable component supply through end-of-life in January 2025.
Supply support for GSOT24C-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 designs and manufactures discrete semiconductors, including diodes, MOSFETs, and ESD protection devices, with emphasis on reliability, precision, and automotive qualification.
The GSOTxxC family targets compact, high-reliability ESD protection for automotive and industrial data lines, delivering integrated dual-channel clamping in industry-standard SOT-23 packages with AEC-Q101 validation.
FAQ
What is the maximum clamping voltage of GSOT24C-HE3-18 during an ESD event?
The GSOT24C-HE3-18 exhibits a maximum reverse clamping voltage (VC) of 47 V at its rated 5 A peak pulse current (IPPM) per IEC 61000-4-5 8/20 μs waveform. At lower currents (e.g., 1 A), VC drops to 34–41 V. This clamping level protects downstream 24 V-tolerant interface ICs such as CAN or LIN transceivers from overvoltage damage.
Can GSOT24C-HE3-18 be used for single-line protection?
Yes - GSOT24C-HE3-18 supports BiSy-MODE (bidirectional symmetrical) operation by leaving pin 3 unconnected and using pins 1 and 2 across a single signal line. In this configuration, it provides 24.5 V VRWM and clamps to 40–48 V at 5 A, functioning as a bipolar TVS for applications like LIN bus or isolated sensor outputs.
Is GSOT24C-HE3-18 qualified for automotive applications?
Yes - GSOT24C-HE3-18 is AEC-Q101 qualified, having passed stress tests including human body model (HBM) >8 kV, temperature cycling, and mechanical shock. Its –55 °C to +150 °C operating range and SOT-23 e3 Sn plating meet automotive production and under-hood deployment requirements.
What is the capacitance of GSOT24C-HE3-18 and how does it affect high-speed signals?
GSOT24C-HE3-18 has a typical capacitance of 65–80 pF at 0 V reverse bias (1 MHz), dropping to ≤20 pF at 12 V. This low, voltage-dependent capacitance supports data rates up to ~20 Mbps in protocols like RS-485 or UART, minimizing signal rise-time degradation and jitter in protected lines.
Does GSOT24C-HE3-18 require external components for basic ESD protection?
No - GSOT24C-HE3-18 is a standalone two-line ESD suppressor requiring only proper PCB layout: short traces to protected lines, low-inductance ground connection to pin 3, and adherence to SOT-23 footprint recommendations. No series resistors, ferrites, or additional TVS devices are needed for standard IEC 61000-4-2 compliance.
GSOT24C-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):
- 24V (Max)
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 47V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 235W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 65pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT24C-HE3-18 FAQ
1.How can I place an order for GSOT24C-HE3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT24C-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 GSOT24C-HE3-18 reliable?
The price and inventory of GSOT24C-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 GSOT24C-HE3-18 is usually 5 days.
3.What payment methods are accepted for GSOT24C-HE3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT24C-HE3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT24C-HE3-18?
GSOT24C-HE3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT24C-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 GSOT24C-HE3-18?
For technical support, including GSOT24C-HE3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT24C-HE3-18 requirements.
6.How does Aetrix verify that GSOT24C-HE3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT24C-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 GSOT24C-HE3-18 meets industry standards.
7.What is the process for return or replacement of GSOT24C-HE3-18?
All GSOT24C-HE3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT24C-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 GSOT24C-HE3-18 part is unused and in its original packaging.
Return procedure for GSOT24C-HE3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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