My Inquiry
My Account
Vishay General Semiconductor - Diodes Division GSOT03C-HE3-08
- Part No.:
- GSOT03C-HE3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT03C-HE3-08.pdf
- Description:
- TVS DIODE 3.3VWM 12.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,016
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
GSOT03C-HE3-08 from Vishay Semiconductors is a bidirectional, asymmetrical ESD protection diode in SOT-23 package, rated for ±30 kV IEC 61000-4-2 contact/air discharge, 3.3 V reverse stand-off voltage (VRWM), and 30 A peak pulse current (IPPM) per line-to-ground path. It protects two data lines (e.g., USB D+/D−, I²C bus) in high-reliability automotive and industrial interfaces.
For engineers reviewing the GSOT03C-HE3-08 datasheet, GSOT03C-HE3-08 pinout, GSOT03C-HE3-08 application, or GSOT03C-HE3-08 equivalent, key selection criteria include its BiAs-mode clamping behavior, low 5.7 V typical reverse clamping at 1 A, 420 pF capacitance at 0 V, AEC-Q101 qualification, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The GSOT03C-HE3-08 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pin 3 is grounded, pins 1 and 2 protect separate signal lines, each with independent 4.6 V typical breakdown (VBR) and distinct forward/reverse clamping paths. Its asymmetry enables tighter negative clamping (1.0 V VF typ.) versus positive clamping (10.0 V VC max at 30 A).
It supports dual operational modes - two-line BiAs mode (pin 3 grounded) and single-line BiSy mode (pin 3 unconnected, pins 1–2 across one line) - with verified 3.8 V VRWM and 14 V VC max at 30 A in BiSy configuration. All operation occurs within -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 immunity for external ports in automotive ECUs and industrial HMI panels. |
| Reverse Stand-off Voltage | 3.3 V (VRWM) - ensures no leakage or interference on 3.3 V logic buses like SPI, UART, or CAN FD physical layer interfaces. |
| Peak Pulse Current | 30 A per line-to-ground path (IEC 61000-4-5, 8/20 μs) - sustains high-energy surges without failure in noisy factory-floor environments. |
| Clamping Voltage | 5.7 V typ. / 12.3 V max at 30 A (pin 1–3 or 2–3) - limits transient overvoltage below 12.3 V to protect downstream 3.3 V ICs with 13.2 V absolute max rating. |
| Capacitance | 420 pF typ. at 0 V, 260 pF at 1.6 V (1 MHz) - optimized for low-speed to medium-speed data lines (≤10 Mbps); avoids signal integrity issues on I²C or RS-485. |
| Operating Temp | -55 °C to +150 °C - qualified for under-hood automotive applications and industrial motor drive control modules. |
| AEC-Q101 | Qualified - 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, 8.8 mg weight, UL 94 V-0 molding compound. Compatible with standard reflow profiles up to 260 °C 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 3). |
| Pin 2 | Line 2 Anode/Cathode (BiAs) | Connects to second protected signal line (e.g., USB D−); forms second independent ESD path to ground (pin 3). |
| Pin 3 | Ground Reference | Must be connected to system ground plane; serves as common return for both protection channels in BiAs mode. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE Protection | Enables independent, asymmetrical clamping per line - 1.0 V forward clamp for negative transients, ~10 V reverse clamp for positive transients - preserving signal integrity on bidirectional buses. |
| Space-Saving SOT-23 | Reduces PCB area by >50% vs. discrete dual-diode solutions; fits 2.8 mm × 2.35 mm footprint with 0.95 mm height - ideal for compact USB-C or sensor interface modules. |
| Low-Leakage Design | 100 μA max reverse current at 3.3 V VR - prevents DC loading on low-power microcontroller GPIOs and battery-backed real-time clocks. |
| Parallelable Architecture | Two internal diodes can be used in parallel to double IPPM (to 60 A) and halve effective series impedance - lowers clamping voltage during extreme surge events. |
| e3 Sn Plating | Lead-free, RoHS-compliant terminations with matte tin finish - eliminates lead contamination risk and ensures reliable solder wetting in automated assembly. |
Applications
| USB 2.0 Interface Protection | I²C Bus Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD events during hot-plug insertion in industrial docking stations. IC Role / Device Role / Timing Role: Two-line transient voltage suppressor placed directly at USB connector, clamping surges before they reach USB PHY or controller IC. Use Value: Maintains 480 Mbps signaling integrity with 420 pF capacitance while surviving ±30 kV contact discharge - eliminating need for external RC filters or layout compromises. | Use Scenario: Safeguarding SDA/SCL lines of I²C sensors in automotive cabin modules exposed to static discharge from human touch. IC Role / Device Role / Timing Role: Bidirectional ESD shunt between I²C lines and chassis ground, operating within 3.3 V supply domain without affecting pull-up resistor network. Use Value: 100 μA max IR prevents bus voltage droop; 5.7 V VC typ. at 1 A ensures MCU I/O pins remain within safe operating area during ESD strikes. |
| Automotive LIN Transceiver Protection | Industrial RS-485 Node Protection |
Use Scenario: Shielding LIN bus transceivers in body control modules from ESD induced by door latch actuation or seat adjustment motors. IC Role / Device Role / Timing Role: Asymmetrical clamping device on LIN data line (pin 1) and ground reference (pin 3), with pin 2 unused or tied off. Use Value: 3.3 V VRWM aligns with LIN's 12 V nominal but 3.3 V logic-level interface; AEC-Q101 qualification ensures compliance with automotive environmental stress requirements. | Use Scenario: Protecting RS-485 transceiver inputs in factory automation PLC I/O modules subjected to cable discharge events in dusty, high-static environments. IC Role / Device Role / Timing Role: Dual-line protector on A/B differential pair, leveraging BiAs mode to clamp both polarities independently while maintaining common-mode noise rejection. Use Value: 30 A IPPM rating handles worst-case IEC 61000-4-5 surges; 12.3 V VC max ensures transceiver input stage (typically ±12 V abs max) remains undamaged. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT03C | Successor device with identical SOT-23 package, same 3.3 V VRWM and ±30 kV ESD rating, but improved thermal robustness and extended lifecycle beyond January 2025. | Drop-in replacement for new designs; not recommended for legacy production continuity due to minor process changes affecting long-term aging behavior. | Select VGSOT03C for new designs requiring post-2025 availability; verify layout compatibility via Vishay's updated footprint recommendation. |
| TPD2E001DRYR | TI device in same SOT-23-3 package; 5.5 V VRWM, 12 pF capacitance at 0 V, lower 3.6 V clamping at 1 A - optimized for high-speed USB 2.0 but incompatible with 3.3 V bus margin. | Better suited for 5 V systems with strict capacitance limits; unsuitable where 3.3 V VRWM and higher surge tolerance (30 A) are mandatory. | Choose TPD2E001DRYR only if system operates at 5 V and requires <15 pF loading; otherwise GSOT03C-HE3-08 provides superior voltage margin and surge handling. |
Compared with VGSOT03C and TPD2E001DRYR, GSOT03C-HE3-08 delivers optimal balance of 3.3 V compatibility, 30 A surge capability, and automotive qualification - making it the preferred choice for cost-sensitive, high-reliability 3.3 V interface protection where end-of-life timing allows.
Availability
GSOT03C-HE3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, I²C bus safeguarding, and automotive LIN transceiver applications requiring stable component supply through its end-of-life date in January 2025.
Supply support for GSOT03C-HE3-08 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 power management, sensing, and circuit protection components with emphasis on automotive, industrial, and computing markets.
The GSOTxxC family was designed specifically for bidirectional, multi-line ESD protection in space-constrained, high-reliability applications - delivering AEC-Q101-qualified performance in ultra-small SOT-23 packages.
FAQ
What is the maximum clamping voltage of GSOT03C-HE3-08 under full-rated surge current?
The GSOT03C-HE3-08 exhibits a maximum reverse clamping voltage (VC) of 12.3 V when subjected to its full 30 A peak pulse current (IPPM) per line-to-ground path, measured per IEC 61000-4-5 8/20 μs waveform. This value ensures protected ICs with 13.2 V absolute maximum ratings remain within safe operating limits during surge events.
Can GSOT03C-HE3-08 be used in single-line symmetrical (BiSy) mode?
Yes, GSOT03C-HE3-08 supports BiSy-MODE operation: leave pin 3 unconnected, and connect pins 1 and 2 across a single signal line (e.g., RS-485 A/B). In this configuration, it delivers 3.8 V VRWM, 14 V VC max at 30 A, and symmetrical clamping - enabling flexible reuse in designs requiring bipolar protection on one line.
Is GSOT03C-HE3-08 qualified for automotive applications?
Yes, GSOT03C-HE3-08 is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and ESD robustness validation. Its -55 °C to +150 °C operating range and SOT-23 package meet automotive under-hood and cabin module requirements.
What is the typical capacitance of GSOT03C-HE3-08 at operating bias?
At 0 V reverse bias and 1 MHz, GSOT03C-HE3-08 has a typical capacitance of 420 pF. When biased at 1.6 V (near its 3.3 V VRWM), capacitance drops to 260 pF - a critical parameter for minimizing signal distortion on medium-speed digital buses such as I²C or UART.
How does the BiAs-MODE architecture improve protection on bidirectional data lines?
BiAs-MODE uses independent diode paths from pins 1 and 2 to pin 3 (ground), enabling asymmetrical clamping: negative transients clamp near 1.0 V (forward VF), while positive transients clamp at ~10 V (reverse VC). This preserves low-voltage logic margins on shared bidirectional lines like USB D+/D− without compromising surge handling.
GSOT03C-HE3-08 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):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 30A (8/20µs)
- Power - Peak Pulse:
- 369W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 420pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT03C-HE3-08 FAQ
1.How can I place an order for GSOT03C-HE3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT03C-HE3-08 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 GSOT03C-HE3-08 reliable?
The price and inventory of GSOT03C-HE3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT03C-HE3-08 is usually 5 days.
3.What payment methods are accepted for GSOT03C-HE3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT03C-HE3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT03C-HE3-08?
GSOT03C-HE3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT03C-HE3-08 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 GSOT03C-HE3-08?
For technical support, including GSOT03C-HE3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT03C-HE3-08 requirements.
6.How does Aetrix verify that GSOT03C-HE3-08 is sourced from the original manufacturer or authorized distributors?
All GSOT03C-HE3-08 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 GSOT03C-HE3-08 meets industry standards.
7.What is the process for return or replacement of GSOT03C-HE3-08?
All GSOT03C-HE3-08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT03C-HE3-08, 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 GSOT03C-HE3-08 part is unused and in its original packaging.
Return procedure for GSOT03C-HE3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT03C-HE3-08 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
