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Vishay General Semiconductor - Diodes Division VGSOT36-HG3-18
- Part No.:
- VGSOT36-HG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
VGSOT36-HG3-18.pdf
- Description:
- TVS DIODE 36VWM 71VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,143
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Product details
Overview
VGSOT36-HG3-18 from Vishay Semiconductors is a unidirectional single-line ESD protection diode in SOT-23 package, rated for 36 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2/ISO 10605 ESD immunity, and 400 W peak pulse power (8/20 μs). It delivers low 1.4 V forward clamping at 5.6 A surge and 45–60 V reverse clamping at full rated current, enabling robust transient suppression on high-voltage data or power rails such as automotive infotainment interfaces.
For engineers reviewing the VGSOT36-HG3-18 datasheet, VGSOT36-HG3-18 pinout, VGSOT36-HG3-18 application, or VGSOT36-HG3-18 equivalent, this device supports high-reliability ESD hardening of 24–36 V signal paths where low capacitance (45–65 pF at 0 V), AEC-Q101 qualification, and bidirectional asymmetrical (BiAs) clamping behavior are required.
Technical Context
VGSOT36-HG3-18 implements a unidirectional TVS diode structure optimized for asymmetrical clamping: it provides low forward-voltage conduction (<1.2 V typical at 1 A) during negative transients and controlled reverse breakdown (VBR = 39–47 V) with clamping voltages of 45–60 V at 1 A and up to 52–71 V at its 5.6 A 8/20 μs peak pulse rating. Its BiAs-MODE operation enables ground-referenced protection of single-ended lines operating near 36 V DC bias.
The device is fabricated using silicon avalanche technology, qualified per AEC-Q101 for automotive use, and packaged in RoHS-compliant, lead-free SOT-23 with MSL Level 1 moisture sensitivity and UL 94 V-0 molding compound. Thermal impedance is specified for junction-to-lead operation under pulsed conditions, supporting reliable energy dissipation in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 36 V - Maximum continuous reverse working voltage before leakage exceeds 1 μA; sets upper limit for safe DC bias on protected line. |
| VBR (min/typ/max) | 39 / 43 / 47 V - Reverse breakdown threshold at 1 mA; defines onset of clamping for positive transients above system rail. |
| VC @ IPP = 5.6 A (8/20 μs) | 52–71 V - Peak clamped voltage during worst-case surge; determines maximum overvoltage stress on downstream IC inputs. |
| VF @ IPP = 5.6 A (8/20 μs) | ≤1.4 V - Forward clamping voltage during negative transients; ensures negative excursions remain within safe ground-referenced limits. |
| Capacitance @ VR = 0 V | 45–65 pF - Signal-line loading at zero bias; impacts high-speed interface integrity (e.g., CAN FD, LIN, or sensor analog outputs). |
| ESD Immunity | ±30 kV contact/air (IEC 61000-4-2 & ISO 10605) - Validates compliance with industrial and automotive ESD stress test requirements. |
| AEC-Q101 Qualified | Yes - Confirmed reliability for automotive applications including temperature cycling, HBM (>8 kV), and mechanical shock testing. |
Pinout & Package
SOT-23 package: 3-pin surface-mount plastic case, 2.9 mm × 1.3 mm × 1.01 mm body, gull-wing leads, e3 Sn termination, MSL Level 1, peak reflow ≤260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (Anode connection) | Low-inductance return path for surge current; must be connected to solid system ground plane for effective clamping. |
| Pin 2 | No Connection (NC) | Internally isolated; no electrical function - must remain unconnected in PCB layout. |
| Pin 3 | Protected Line (Cathode connection) | Input/output node requiring ESD protection; placed directly in series with signal/power trace upstream of sensitive IC. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE clamping | Asymmetrical response: <1.2 V forward clamping for negative transients, 45–60 V reverse clamping for positive surges - preserves signal integrity across wide common-mode range. |
| AEC-Q101 qualification | Validated for automotive underhood and cabin environments, including extended temperature (-55 °C to +150 °C) and mechanical stress requirements. |
| Low 45–65 pF capacitance | Minimizes signal distortion on 36 V bias lines used in CAN transceivers, battery monitoring, or industrial analog sensors without requiring RC compensation. |
| ±30 kV ESD immunity | Meets highest-tier IEC/ISO ESD test levels - eliminates need for secondary board-level protection in cost-sensitive automotive modules. |
| SOT-23 footprint compatibility | Standard 3-pin SOT-23 land pattern enables drop-in replacement across Vishay's VGSOTxx family without PCB redesign. |
Applications
| Automotive Body Control Module (BCM) | Industrial 24 V Sensor Interface |
|---|---|
Use Scenario: Protecting LIN bus transceiver I/O pins against ESD events during vehicle assembly and service. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between LIN data line and chassis ground to clamp fast transients while preserving 19.2 kbps signal fidelity. Use Value: Maintains <65 pF loading and 36 V VRWM compatibility with LIN physical layer, preventing false triggering or data corruption during ±30 kV contact discharge. |
Use Scenario: Safeguarding analog output of 24 V pressure sensor feeding PLC input card in factory automation. IC Role / Device Role / Timing Role: Ground-referenced ESD clamp on 4–20 mA loop-powered sensor output line, absorbing cable discharge without affecting loop accuracy. Use Value: Enables direct integration with 24 V supply rail and delivers stable clamping below 71 V at 5.6 A, protecting downstream ADC front-end from latch-up. |
| Automotive Infotainment Display Link | Smart Building HVAC Controller |
Use Scenario: Hardening RS-485 differential pair (single-ended side) in head-unit display interface exposed to user-accessible ports. IC Role / Device Role / Timing Role: Per-line unidirectional protection on DE/RE control signals referenced to 36 V auxiliary rail, suppressing ESD-induced reset glitches. Use Value: 45–65 pF capacitance avoids signal edge degradation at 10 Mbps rates, while ±30 kV rating meets OEM ESD test plans for consumer-facing electronics. |
Use Scenario: Securing BACnet MS/TP UART lines in HVAC controller mounted near HVAC ducts with high static charge accumulation. IC Role / Device Role / Timing Role: Single-point ESD suppressor on TX/RX lines tied to 24 V system rail, shunting transients before they reach UART transceiver ESD structures. Use Value: AEC-Q101 qualification ensures long-term reliability in thermally cycled environments, and 1 μA IR at 36 V prevents DC loading on open-drain logic lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Unidirectional, 36 V VRWM, 400 W PPPM, but higher 100 pF capacitance and no AEC-Q101 qualification. | Targeted at industrial power supplies rather than automotive signal lines; lacks BiAs clamping optimization for mixed-polarity transients. | Select SMAJ36A only for non-automotive, lower-speed applications where capacitance >80 pF is acceptable and AEC-Q101 is not mandated. |
| TPD2E001DRYR | Bidirectional, 5 V VRWM, 0.8 pF capacitance, but rated only to ±8 kV ESD and unsuitable for 36 V bias rails. | Designed for USB/low-voltage digital I/O; cannot withstand continuous 36 V DC or high-energy 8/20 μs surges. | Choose TPD2E001DRYR only for sub-5 V high-speed interfaces (e.g., USB 2.0); incompatible with VGSOT36-HG3-18's voltage and energy handling scope. |
Compared with SMAJ36A and TPD2E001DRYR, VGSOT36-HG3-18 uniquely combines AEC-Q101 qualification, 36 V VRWM, ±30 kV ESD rating, and BiAs clamping in SOT-23 - making it the only viable option for automotive 24–36 V data line protection where reliability, low capacitance, and asymmetric surge response are jointly required.
Availability
VGSOT36-HG3-18 is available at Aetrix Electronics and suitable for automotive body control modules, industrial 24 V sensor interfaces, and smart building HVAC controllers requiring stable component supply with guaranteed long-term sourcing and automotive-grade traceability.
Supply support for VGSOT36-HG3-18 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.
VGSOT36-HG3-18 belongs to Vishay's VGSOTxx family of unidirectional ESD protection diodes, engineered specifically for robust transient suppression on high-voltage signal lines in harsh automotive and industrial environments.
FAQ
What is the maximum continuous operating voltage for VGSOT36-HG3-18?
VGSOT36-HG3-18 has a maximum reverse stand-off voltage (VRWM) of 36 V, meaning it can safely block up to 36 V DC or RMS AC continuously without exceeding 1 μA leakage current. This makes it suitable for protecting circuits operating at nominal 24 V or 36 V rails, such as automotive body electronics and industrial control systems. Exceeding VRWM risks premature conduction and thermal overstress.
Does VGSOT36-HG3-18 meet automotive qualification standards?
Yes, VGSOT36-HG3-18 is AEC-Q101 qualified, confirming its suitability for automotive applications. It passes stress tests including human body model (HBM) >8 kV, temperature cycling, and mechanical shock. The device operates from −55 °C to +150 °C junction temperature and uses green, lead-free (e3 Sn) terminations compliant with RoHS directives - all verified per Vishay's qualification report for the VGSOTxx family.
How does the BiAs-MODE clamping behavior of VGSOT36-HG3-18 improve system protection?
VGSOT36-HG3-18's BiAs-MODE delivers asymmetrical clamping: <1.2 V forward voltage during negative transients and 45–60 V reverse clamping during positive surges. This preserves signal integrity on biased lines (e.g., 36 V sensor outputs), avoids forward-bias damage to downstream ICs, and reduces ground bounce compared to symmetrical TVS devices - a key advantage in automotive LIN, CAN, and analog sensor protection.
What is the capacitance of VGSOT36-HG3-18 and how does it affect high-speed signals?
VGSOT36-HG3-18 exhibits 45–65 pF capacitance at 0 V reverse bias (1 MHz), dropping to ~14 pF at 18 V. This low, voltage-dependent capacitance minimizes signal rise-time degradation and reflections on 24–36 V data lines such as RS-485 control signals or analog sensor outputs. Unlike higher-capacitance alternatives (>100 pF), it avoids mandatory RC filtering or bandwidth limiting in designs up to 10 Mbps.
Can VGSOT36-HG3-18 replace other VGSOTxx variants on the same PCB footprint?
Yes, all VGSOTxx devices including VGSOT36-HG3-18 share identical SOT-23 package dimensions, pinout (Pin 1 = ground, Pin 2 = NC, Pin 3 = protected line), and land pattern. Engineers may substitute VGSOT05-HG3-18, VGSOT12-HG3-18, or VGSOT36-HG3-18 without PCB changes - enabling scalable ESD protection across different voltage rails while maintaining layout reuse and inventory simplification.
VGSOT36-HG3-18 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V (Max)
- Voltage - Breakdown (Min):
- 39V
- Voltage - Clamping (Max) @ Ipp:
- 71V
- Current - Peak Pulse (10/1000µs):
- 5.6A (8/20µs)
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 45pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
VGSOT36-HG3-18 FAQ
1.How can I place an order for VGSOT36-HG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VGSOT36-HG3-18 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 VGSOT36-HG3-18 reliable?
The price and inventory of VGSOT36-HG3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VGSOT36-HG3-18 is usually 5 days.
3.What payment methods are accepted for VGSOT36-HG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VGSOT36-HG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VGSOT36-HG3-18?
VGSOT36-HG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VGSOT36-HG3-18 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 VGSOT36-HG3-18?
For technical support, including VGSOT36-HG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VGSOT36-HG3-18 requirements.
6.How does Aetrix verify that VGSOT36-HG3-18 is sourced from the original manufacturer or authorized distributors?
All VGSOT36-HG3-18 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 VGSOT36-HG3-18 meets industry standards.
7.What is the process for return or replacement of VGSOT36-HG3-18?
All VGSOT36-HG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VGSOT36-HG3-18, 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 VGSOT36-HG3-18 part is unused and in its original packaging.
Return procedure for VGSOT36-HG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VGSOT36-HG3-18 Tags
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