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Vishay General Semiconductor - Diodes Division GSOT15-E3-08
- Part No.:
- GSOT15-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT15-E3-08.pdf
- Description:
- TVS DIODE 15VWM 28.8VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:37,369
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Product details
Overview
GSOT15-E3-08 from Vishay Semiconductors is a single-line bidirectional asymmetrical (BiAs) ESD protection diode in SOT-23 package, rated for 15 V reverse stand-off voltage, ±30 kV IEC 61000-4-2 ESD immunity, and 8 A peak pulse current (8/20 μs), designed for protecting low-voltage data lines such as USB 2.0 or I²C interfaces.
For engineers reviewing the GSOT15-E3-08 datasheet, GSOT15-E3-08 pinout, GSOT15-E3-08 application, or GSOT15-E3-08 equivalent, key selection considerations include its 15 V VRWM, 24.8 V clamping at 8 A, 90–120 pF capacitance at 0 V bias, AEC-Q101 qualification option, and SOT-23 footprint compatibility with space-constrained PCB layouts.
Technical Context
The GSOT15-E3-08 implements BiAs-MODE protection: pin 1 is grounded, pin 3 connects to the protected signal line, and conduction occurs asymmetrically-reverse breakdown at ~18 V (VBR typ.) clamps positive transients, while forward conduction at ~1.0 V (VF typ.) clamps negative transients near ground. This enables precise voltage limiting without DC path disruption during normal operation.
It operates across –40 °C to +125 °C junction temperature, meets IEC 61000-4-5 (8/20 μs surge) and IEC 61000-4-2 (ESD), and features MSL level 1 moisture sensitivity with peak reflow tolerance up to 260 °C-enabling standard SMT assembly without special handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-off Voltage (VRWM) | 15 V - maximum continuous operating voltage before clamping begins; ensures no leakage or interference on 12–15 V signal rails. |
| Peak Pulse Current (IPPM) | 8 A (8/20 μs) - sustains transient energy from IEC 61000-4-5 surges without failure; defines robustness against lightning-induced coupling. |
| Clamping Voltage (VC) | 24.8 V max at 8 A - limits voltage seen by downstream ICs during worst-case surge; critical for safeguarding 16 V-tolerant receivers. |
| Capacitance (CD) | 90–120 pF at 0 V, 35 pF at 7.5 V - low enough for USB 2.0 (480 Mbps) and I²C (up to 1 MHz) without signal integrity degradation. |
| ESD Immunity | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds industrial and automotive ESD requirements; eliminates need for secondary board-level protection. |
| Package | SOT-23 - 2.8 × 2.35 × 1.15 mm footprint; compatible with automated pick-and-place and standard reflow profiles (MSL 1, 260 °C peak). |
| AEC-Q101 Qualified | Available in HE3/HG3 variants - validated for automotive infotainment, body control, and ADAS sensor interfaces requiring reliability under thermal cycling and vibration. |
Pinout & Package
SOT-23 package: 3-pin surface-mount, gull-wing leads, e3 (Sn) termination, 8.8 mg weight, UL 94 V-0 molding compound, MSL level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (Anode common) | DC return path for clamped transients; must connect directly to low-impedance system ground plane. |
| Pin 2 | No Connection (NC) | Internal die pad; electrically isolated-no PCB trace or solder mask opening required. |
| Pin 3 | Protected Line (Cathode) | Connects to signal/data line (e.g., USB D+, I²C SDA); provides bidirectional clamping between this node and ground. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Asymmetrical (BiAs) Clamping | Clamps positive transients at ~18 V (reverse) and negative transients at ~1.0 V (forward), minimizing voltage excursion on both polarities without DC loading. |
| Low Capacitance at Operating Bias | 35 pF at 7.5 V reverse bias-preserves signal rise time and eye diagram integrity on 12–15 V analog or digital buses. |
| High Surge Robustness | 230 W peak pulse power (PPP) supports repeated 8/20 μs surges up to 8 A, meeting IEC 61000-4-5 Level 3 requirements. |
| AEC-Q101 Qualification Option | HE3/HG3 variants undergo stress testing for automotive use-including HTOL, TC, and mechanical shock-ensuring longevity in harsh environments. |
| e3 Sn Termination | Lead (Pb)-free, RoHS-compliant matte tin plating with >1000-hr sulfur resistance; eliminates whisker risk and supports Pb-free reflow. |
Applications
| USB 2.0 Interface Protection | I²C Bus Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines in portable medical monitors against ESD events during cable insertion or handling. IC Role / Device Role / Timing Role: Standalone ESD suppressor placed immediately at connector, shunting transients before they reach the USB transceiver IC. Use Value: 90–120 pF capacitance avoids signal distortion at 480 Mbps; ±30 kV ESD rating prevents latch-up or damage during field use. | Use Scenario: Safeguarding I²C clock (SCL) and data (SDA) lines connecting microcontroller to EEPROM or sensor in industrial PLC modules. IC Role / Device Role / Timing Role: Low-capacitance transient voltage suppressor mounted at bus endpoints to absorb coupling noise and ESD from adjacent relays or motors. Use Value: 35 pF at 7.5 V bias preserves rise/fall times for 400 kHz fast-mode I²C; 15 V VRWM matches typical 12 V supply rail margins. |
| Automotive Sensor Interface | Industrial CAN Node Protection |
Use Scenario: Shielding LIN or SENT signal lines from ESD in automotive cabin temperature sensors exposed to human touch. IC Role / Device Role / Timing Role: Single-line BiAs protector on signal output path, referenced to chassis ground, compliant with ISO 10605. Use Value: AEC-Q101 qualified HE3 variant ensures operation from –40 °C to +125 °C; 24.8 V clamping protects 24 V-tolerant receiver inputs. | Use Scenario: Adding secondary ESD hardening to CAN_H/CAN_L nodes in factory automation gateways where primary TVS is located remotely. IC Role / Device Role / Timing Role: Localized clamp on each CAN line near transceiver, reducing stub inductance and improving high-frequency ESD response. Use Value: 15 V VRWM aligns with CAN common-mode range; low 1 μA IR at 15 V prevents bus loading or false dominant states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT15T-HM3-08 | Same VRWM (15 V), lower clamping (22.5 V @ 8 A), 75 pF typ. capacitance, halogen-free molding compound. | Preferred for high-reliability industrial systems requiring tighter clamping and green material compliance. | Select when lower VC and halogen-free construction outweigh cost premium over GSOT15-E3-08. |
| SMF15A-TAP | Unidirectional, 15 V VRWM, 24.4 V VC @ 8 A, 150 pF capacitance, DO-214AA package (larger, higher inductance). | Suitable for non-bidirectional DC-coupled lines where polarity is fixed and board area is not constrained. | Choose only if unidirectional behavior is acceptable and SOT-23 footprint is not required. |
Compared with VGSOT15T-HM3-08, GSOT15-E3-08 offers broader availability and legacy design support but slightly higher clamping and no halogen-free assurance; versus SMF15A-TAP, GSOT15-E3-08 delivers superior high-speed signal integrity and space savings, though it lacks unidirectional leakage advantages in DC-biased rails.
Availability
GSOT15-E3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, I²C bus hardening, and automotive sensor signal conditioning requiring stable component supply through end-of-life in January 2025.
Supply support for GSOT15-E3-08 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 high-reliability diodes, MOSFETs, optoelectronics, and protection devices for industrial, automotive, and computing markets.
The GSOTxx family was developed specifically for compact, high-performance ESD and surge protection of low-voltage data lines-balancing low capacitance, precise clamping, and AEC-Q101 readiness in standardized SOT-23 packaging.
FAQ
What is the maximum operating temperature range for the GSOT15-E3-08?
The GSOT15-E3-08 has a junction temperature range of –40 °C to +125 °C, supporting deployment in automotive engine compartments, industrial control cabinets, and outdoor equipment enclosures. Its SOT-23 package and UL 94 V-0 molding compound ensure thermal stability and flame resistance under sustained operation at upper limit conditions.
Does the GSOT15-E3-08 require a heatsink for 8 A surge handling?
No, the GSOT15-E3-08 does not require a heatsink. Its 8 A peak pulse rating (8/20 μs) is a single-shot, non-repetitive surge capability; energy dissipation occurs over microseconds, not steady-state. Thermal design focuses on PCB copper area for grounding-minimum 25 mm² of 1 oz. copper connected to pin 1-to ensure low-inductance transient discharge.
Is the GSOT15-E3-08 pin-compatible with other GSOTxx series devices?
Yes, all GSOTxx devices-including GSOT15-E3-08-share identical SOT-23 pinout (pin 1 = ground, pin 2 = NC, pin 3 = protected line) and footprint. This enables drop-in replacement across voltage grades (e.g., GSOT05 to GSOT36) during design iteration or EOL mitigation, provided VRWM and clamping requirements remain aligned.
How does the BiAs-MODE architecture of the GSOT15-E3-08 improve protection compared to standard TVS diodes?
The BiAs-MODE architecture of the GSOT15-E3-08 provides distinct forward (~1.0 V) and reverse (~18 V) clamping thresholds, enabling tighter voltage control on bidirectional AC-coupled or floating lines. Unlike symmetric TVS diodes that clamp equally in both directions, GSOT15-E3-08 minimizes negative transient overshoot near ground-critical for preserving logic low states in open-drain buses like I²C.
Can the GSOT15-E3-08 be used in place of the obsolete GSOT15-E3-08R?
Yes, GSOT15-E3-08 replaces GSOT15-E3-08R with identical electrical specifications, SOT-23 package, and marking format. The "R" suffix denoted an earlier revision; current GSOT15-E3-08 incorporates updated process controls and full AEC-Q101 qualification support (via HE3/HG3 variants), with no PCB layout or firmware changes required.
GSOT15-E3-08 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.5V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 8A (8/20µs)
- Power - Peak Pulse:
- 230W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 90pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT15-E3-08 FAQ
1.How can I place an order for GSOT15-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT15-E3-08 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 GSOT15-E3-08 reliable?
The price and inventory of GSOT15-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT15-E3-08 is usually 5 days.
3.What payment methods are accepted for GSOT15-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT15-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT15-E3-08?
GSOT15-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT15-E3-08 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 GSOT15-E3-08?
For technical support, including GSOT15-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT15-E3-08 requirements.
6.How does Aetrix verify that GSOT15-E3-08 is sourced from the original manufacturer or authorized distributors?
All GSOT15-E3-08 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 GSOT15-E3-08 meets industry standards.
7.What is the process for return or replacement of GSOT15-E3-08?
All GSOT15-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT15-E3-08, 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 GSOT15-E3-08 part is unused and in its original packaging.
Return procedure for GSOT15-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT15-E3-08 Tags
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