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Vishay General Semiconductor - Diodes Division GSOT05C-E3-18
- Part No.:
- GSOT05C-E3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT05C-E3-18.pdf
- Description:
- TVS DIODE 5VWM 16VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,884
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Product details
Overview
GSOT05C-E3-18 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, 5 V reverse stand-off voltage (VRWM), and 30 A peak pulse current (IPPM) per line-to-ground path. It delivers 12 V clamping voltage at 30 A and 260–350 pF capacitance at 0 V bias, used in USB 2.0, HDMI, and industrial I/O port protection.
For engineers reviewing the GSOT05C-E3-18 datasheet, GSOT05C-E3-18 pinout, GSOT05C-E3-18 application, or GSOT05C-E3-18 equivalent, key selection criteria include its BiAs-mode dual-line asymmetrical clamping behavior, AEC-Q101 qualification option, SOT-23 footprint compatibility, and trade-offs between VRWM (5 V), VC (12 V @ 30 A), and CD (260–350 pF).
Technical Context
The GSOT05C-E3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pin 1 and pin 2 connect to protected signal lines, pin 3 to ground, enabling independent clamping of positive transients via reverse breakdown (VBR = 6–8 V) and negative transients via forward conduction (VF ≈ 1–4.5 V). Its dual-diode structure supports parallel use for doubled IPPM and reduced clamping voltage.
It also supports BiSy-MODE (Bidirectional Symmetrical) when pin 3 is left unconnected and pin 1/pin 2 form a single-line path with VRWM = 5.5 V, VBR = 6.5–8.7 V, and VC = 17–20.4 V at 30 A - enabling flexible deployment across differential and single-ended interfaces without redesign.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD immunity | ±30 kV contact/air discharge per IEC 61000-4-2 - meets highest system-level ESD robustness requirements for consumer and automotive ports. |
| Reverse stand-off voltage (VRWM) | 5 V - compatible with 3.3 V and 5 V logic systems while preventing leakage during normal operation. |
| Peak pulse current (IPPM) | 30 A per line-to-ground path - handles severe surge events per IEC 61000-4-5 (8/20 μs waveform). |
| Clamping voltage (VC) | 12 V max at 30 A - limits transient overvoltage to safe levels for downstream 5 V-tolerant ICs. |
| Capacitance (CD) | 260–350 pF at 0 V, 150 pF at 2.5 V - optimized for high-speed data lines up to ~100 Mbps without signal integrity degradation. |
| Operating temperature | −55 °C to +150 °C - supports under-hood automotive, industrial control, and extended-environment deployments. |
| AEC-Q101 qualified | Available in AEC-Q101-qualified variants - enables direct use in automotive electronics requiring stress-tested reliability. |
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 | Line 1 anode / cathode | Connects to first protected signal line (L1); forms one half of BiAs protection path to ground (pin 3). |
| Pin 2 | Line 2 anode / cathode | Connects to second protected signal line (L2); forms second half of BiAs protection path to ground (pin 3). |
| Pin 3 | Ground reference | Must be connected to system ground to enable BiAs mode; left floating for BiSy single-line mode. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line ESD protection | Simultaneously safeguards two independent data/signal lines (e.g., D+ and D−) with shared ground return, reducing component count vs. discrete diodes. |
| Bidirectional asymmetrical (BiAs) clamping | Clamps positive transients at ~12 V (reverse) and negative transients near 0 V (forward), minimizing voltage overshoot on both polarities. |
| Parallelable architecture | Two internal diodes can be operated in parallel to double IPPM (to 60 A) and halve effective series impedance, lowering clamping voltage by ~10–15 %. |
| Low-leakage design | IR ≤ 10 μA at VR = 5 V - prevents signal distortion or power drain in battery-powered or high-impedance circuits. |
| Space-saving SOT-23 footprint | Standard 3-pin SOT-23 layout enables drop-in replacement in existing PCB designs without layout revision. |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD events during hot-plug insertion or handling. IC Role / Device Role / Timing Role: Two-line asymmetrical transient voltage suppressor placed directly at connector, before USB transceiver IC. Use Value: Maintains signal integrity with 260–350 pF capacitance while clamping ±30 kV discharges to ≤12 V, ensuring USB eye diagram compliance and link reliability. | Use Scenario: Safeguarding TMDS data channels (0/1/2) in HDMI 1.4 receivers/transmitters against ESD in AV equipment and set-top boxes. IC Role / Device Role / Timing Role: Per-channel BiAs protector with ground-referenced dual-diode structure, mounted adjacent to HDMI connector pins. Use Value: Enables full 2.25 Gbps HDMI bandwidth by limiting capacitance to ≤350 pF and clamping surges within 5 V logic tolerance of SerDes inputs. |
| Industrial RS-485 Transceiver Port | Automotive CAN FD Node Protection |
Use Scenario: Shielding RS-485 A/B differential pair in factory automation gateways exposed to cable-induced surges and field ESD. IC Role / Device Role / Timing Role: Dual-line TVS array configured in BiAs mode, placed between connector and isolated RS-485 transceiver. Use Value: Withstands 30 A 8/20 μs surges while holding clamping voltage ≤12 V, preserving common-mode range and preventing transceiver latch-up. | Use Scenario: Protecting CAN_H/CAN_L lines of automotive body control modules where AEC-Q101 qualification and ±30 kV ESD are mandatory. IC Role / Device Role / Timing Role: AEC-Q101-qualified dual-line ESD suppressor deployed at vehicle harness entry point before CAN controller. Use Value: Delivers certified automotive reliability with −55 °C to +150 °C operation and 12 V clamping at 30 A, meeting ISO 10605 and OEM ESD test plans. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT05C-E3-18 | Successor device with identical SOT-23 footprint, same VRWM (5 V), but improved VC (11.5 V max @ 30 A) and lower CD (220–300 pF). | Direct replacement for new designs; requires validation for legacy board rework due to minor parameter shifts. | Select for new designs needing marginally better clamping and lower capacitance; verify layout compatibility with VGSOTxxC family footprints. |
| SMF05CT1G | Single-line SOT-23 TVS (not dual-line); VRWM = 5 V, VC = 14.5 V @ 12 A, CD = 350 pF - lower surge rating and no integrated dual-path architecture. | Requires two devices per differential pair, increasing BOM count and PCB area; lacks BiAs/BiSy mode flexibility. | Choose only if dual-line integration is unnecessary and cost-per-line is prioritized over space and performance. |
Compared with VGSOT05C-E3-18, the GSOT05C-E3-18 offers proven field reliability and identical pinout but slightly higher clamping voltage and capacitance; versus SMF05CT1G, it provides true two-line integration and superior surge handling, justifying its use in compact, high-density interface protection.
Availability
GSOT05C-E3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI data lane safeguarding, and industrial RS-485 transceiver port hardening requiring stable component supply through its end-of-life date in January 2025.
Supply support for GSOT05C-E3-18 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 diodes, MOSFETs, optoelectronics, and ESD protection solutions.
The GSOTxxC family was engineered specifically for compact, high-performance ESD protection of high-speed data lines in automotive, industrial, and consumer electronics - emphasizing low capacitance, precise clamping, and AEC-Q101 readiness.
FAQ
What is the maximum clamping voltage of GSOT05C-E3-18 at 30 A peak pulse current?
The GSOT05C-E3-18 has a maximum reverse clamping voltage (VC) of 16 V at 30 A peak pulse current (IPPM) per line-to-ground path, measured per IEC 61000-4-5 8/20 μs waveform. Typical VC is 12 V under the same conditions, making it suitable for protecting 5 V logic interfaces without overstressing downstream ICs.
Can GSOT05C-E3-18 be used for single-line protection, and how is it configured?
Yes, GSOT05C-E3-18 supports BiSy-MODE for single-line protection: leave pin 3 unconnected, and use pin 1 and pin 2 as a bidirectional path with VRWM = 5.5 V and VC = 17–20.4 V at 30 A. This configuration is ideal for protecting individual lines like UART TX/RX or CAN signals where dual-line symmetry is required.
Is GSOT05C-E3-18 qualified to AEC-Q101, and what does that mean for automotive use?
GSOT05C-E3-18 is available in AEC-Q101-qualified versions (e.g., GSOT05C-HE3-18). AEC-Q101 qualification confirms rigorous stress testing for temperature cycling, humidity, ESD, and mechanical shock - enabling direct use in automotive infotainment, body electronics, and ADAS modules without additional qualification effort.
What is the capacitance of GSOT05C-E3-18 at 2.5 V reverse bias, and why does it matter?
The GSOT05C-E3-18 exhibits 150 pF typical capacitance at 2.5 V reverse bias and 1 MHz. This low-bias capacitance is critical for high-speed data lines (e.g., USB 2.0), as it minimizes signal attenuation and jitter - ensuring eye diagram compliance and reliable bit-error-rate performance at 480 Mbps.
How does the BiAs-MODE operation of GSOT05C-E3-18 improve ESD protection compared to symmetrical TVS diodes?
BiAs-MODE enables GSOT05C-E3-18 to clamp negative transients near 0 V (via forward conduction) while clamping positive transients at ~12 V (via reverse breakdown), resulting in tighter overall voltage excursions than symmetrical diodes. This asymmetry reduces risk of forward-bias damage to downstream receivers and improves noise immunity in mixed-signal environments.
GSOT05C-E3-18 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):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- Current - Peak Pulse (10/1000µs):
- 30A (8/20µs)
- Power - Peak Pulse:
- 480W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 260pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT05C-E3-18 FAQ
1.How can I place an order for GSOT05C-E3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT05C-E3-18 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 GSOT05C-E3-18 reliable?
The price and inventory of GSOT05C-E3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT05C-E3-18 is usually 5 days.
3.What payment methods are accepted for GSOT05C-E3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT05C-E3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT05C-E3-18?
GSOT05C-E3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT05C-E3-18 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 GSOT05C-E3-18?
For technical support, including GSOT05C-E3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT05C-E3-18 requirements.
6.How does Aetrix verify that GSOT05C-E3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT05C-E3-18 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 GSOT05C-E3-18 meets industry standards.
7.What is the process for return or replacement of GSOT05C-E3-18?
All GSOT05C-E3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT05C-E3-18, 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 GSOT05C-E3-18 part is unused and in its original packaging.
Return procedure for GSOT05C-E3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT05C-E3-18 Tags
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