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onsemi ESD11A3.3DT5G
- Part No.:
- ESD11A3.3DT5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOT-1123
- Datasheet:
-
ESD11A3.3DT5G.pdf
- Description:
- TVS DIODE 3.3VWM 7.8VC SOT1123
- Quantity:
- Payment:
- Shipping:
Inventory:9,344
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Product details
Overview
ESD11A3.3DT5G from onsemi is a unidirectional ESD protection diode in SOT-1123 package, featuring 3.3 V working peak reverse voltage, 7.8 V clamping voltage at 1 A pulse, <1 ns response time, and IEC 61000-4-2 Level 4 (±15 kV contact) compliance - deployed for high-density USB, HDMI, and audio line protection in smartphones and wearables.
For engineers reviewing the ESD11A3.3DT5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under 8 kV ESD stress, sub-1 ns transient response, ultra-low capacitance (25 pF), and AEC-Q101 qualification for portable and automotive infotainment interfaces.
Technical Context
This device integrates two unidirectional ESD protection diodes sharing a common anode (Pin 3) and separate cathodes (Pins 1 & 2), enabling dual-line protection without cross-coupling. Its low 3.3 V stand-off voltage ensures compatibility with 3.3 V I/O rails while maintaining robust ±15 kV IEC 61000-4-2 immunity.
The SOT-1123 package (1.0 mm × 0.6 mm × 0.4 mm) supports high-density routing on compact PCBs, and its 100% matte tin lead finish meets RoHS and MSL 1 reflow requirements up to 260°C - critical for automated assembly of portable electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage (VRWM) | 3.3 V - matches standard 3.3 V logic I/O voltage rails without leakage-induced false triggering |
| Clamping Voltage (VC) | 7.8 V @ IPP = 1 A - limits transient overvoltage to safe levels for downstream 3.3 V ICs during ESD events |
| Capacitance (C) | 25 pF @ 0 V, 1 MHz - preserves signal integrity on high-speed interfaces like USB 2.0 and I²S audio |
| ESD Rating | ±15 kV contact per IEC 61000-4-2 Level 4 - exceeds industrial and consumer system-level ESD immunity requirements |
| Response Time | <1 ns - activates before sensitive transceivers experience damaging voltage overshoot |
| Leakage Current (IR) | 1.0 µA @ VRWM - avoids DC loading on battery-powered sensor or audio bias networks |
| Package | SOT-1123 (Case 524AA) - 1.0 mm × 0.6 mm footprint enables placement adjacent to connector pins |
Pinout & Package
SOT-1123 ultra-small surface-mount package: 1.0 mm × 0.6 mm body, 0.4 mm height, 0.35 mm pitch, void-free thermoset epoxy (UL 94 V-0), matte tin lead finish, MSL 1 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Channel A) | Connects to protected signal line A; reverse-biased during normal operation, conducts only during ESD negative transients |
| Pin 2 | Cathode (Channel B) | Connects to protected signal line B; independent conduction path prevents crosstalk between adjacent lines |
| Pin 3 | Anode (Common) | Shared return path to ground or low-impedance reference; must be routed with minimal inductance for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Dual unidirectional protection | Two independent ESD paths in one package reduce board area by >50% vs. discrete diode pairs |
| Low clamping voltage | 7.8 V clamping at 1 A ensures downstream 3.3 V logic remains within absolute maximum ratings during ESD |
| AEC-Q101 qualified | Validated for automotive infotainment and telematics modules requiring extended temperature and reliability assurance |
| Pb-free and RoHS compliant | Meets global environmental regulations and supports lead-free reflow profiles up to 260°C |
| Ultra-low profile | 0.4 mm height enables use under mechanical shields and in stacked PCB assemblies |
Applications
| USB 2.0 Data Lines | HDMI Hot-Plug Detect |
|---|---|
Use Scenario: Protecting D+ and D− lines in smartphone USB ports against repeated electrostatic discharge during cable insertion. IC Role / Device Role: Unidirectional ESD clamp placed directly at the USB connector, shunting transients to ground before reaching the USB transceiver IC. Use Value: 25 pF capacitance avoids signal rise-time degradation; 7.8 V clamping prevents latch-up in the PHY layer during ±8 kV contact discharge. | Use Scenario: Safeguarding the HPD (Hot-Plug Detect) pin in portable HDMI adapters exposed to user-handled connectors. IC Role / Device Role: Standoff-rated (3.3 V) clamp that blocks normal 5 V HPD pull-up current but triggers during ESD events. Use Value: Low 1.0 µA leakage preserves HPD logic threshold margin; ±15 kV rating exceeds HDMI compliance test requirements. |
| Smartphone Audio Jack | Automotive Infotainment Display Interface |
Use Scenario: ESD protection for left/right audio and microphone sense lines in 3.5 mm TRRS jacks subject to frequent plug/unplug cycles. IC Role / Device Role: Dual-channel clamp with shared anode tied to chassis ground, minimizing trace length to ground plane. Use Value: Sub-1 ns response prevents pop-noise coupling into audio amplifiers; SOT-1123 size fits within jack's mechanical keep-out zone. | Use Scenario: Protecting LVDS or RGB data lines between head unit MCU and TFT display in automotive dashboards. IC Role / Device Role: AEC-Q101-qualified dual diode placed at display flex connector to suppress ESD induced by glove contact or dry-air environments. Use Value: Operation from −55 °C to +125 °C junction temperature ensures reliability across vehicle thermal cycling; 7.8 V clamping protects display timing controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9B3.3ST5G | Single-channel, same VRWM (3.3 V), lower capacitance (15 pF), higher clamping (12 V @ 1 A) | Better for ultra-high-speed lines where capacitance is critical; less effective for voltage-sensitive 3.3 V receivers | Select when protecting PCIe or MIPI lines where <20 pF is mandatory and clamping voltage margin allows ≥12 V |
| CM1213A-03SR | Tri-directional configuration, 3.3 V VRWM, 12 V clamping, 30 pF capacitance, SOIC-8 package | Supports bidirectional signal lines (e.g., I²C) but requires 5× board area vs. SOT-1123 | Choose for legacy designs needing through-hole or larger SMT footprints and bidirectional ESD coverage on shared bus lines |
Compared with ESD11A3.3DT5G, ESD9B3.3ST5G trades lower capacitance for higher clamping voltage and single-channel layout, while CM1213A-03SR offers tri-directional capability at the cost of footprint and higher VC - making ESD11A3.3DT5G optimal for space-constrained dual-line 3.3 V I/O protection with balanced performance.
Availability
ESD11A3.3DT5G is available at Aetrix Electronics and suitable for smartphone interface protection, automotive display interconnects, and portable audio subsystems requiring stable component supply and long-term lifecycle support.
Supply support for ESD11A3.3DT5G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and ESD protection solutions for automotive, industrial, and portable electronics.
The ESD11A Series was developed specifically for ultra-compact, high-reliability ESD protection in space-constrained portable devices - emphasizing low clamping voltage, fast response, and AEC-Q101 qualification for infotainment and mobile platforms.
FAQ
What is the maximum ESD voltage level the ESD11A3.3DT5G can withstand?
The ESD11A3.3DT5G is rated for ±15 kV contact discharge and ±8 kV air discharge per IEC 61000-4-2 Level 4. This rating is verified using the standard ESD test setup with 150 pF/330 Ω network, and the device maintains functional integrity and clamping performance across all specified stress levels without degradation.
Does the ESD11A3.3DT5G support bidirectional signal lines like I²C or USB D+/D−?
The ESD11A3.3DT5G is a unidirectional device with two independent cathodes and a common anode - it protects only against negative transients on each line when the anode is grounded. For true bidirectional protection (e.g., I²C), a separate solution such as a bi-directional array or back-to-back diode configuration is required; ESD11A3.3DT5G is optimized for unidirectional 3.3 V I/O like USB 2.0 or HDMI HPD.
What is the thermal limit for solder reflow of the ESD11A3.3DT5G?
The ESD11A3.3DT5G is qualified for lead-free reflow with a maximum peak temperature of 260°C for 10 seconds, meeting J-STD-020 MSL 1 requirements. Its thermoset epoxy package and matte tin finish ensure reliable wetting and intermetallic formation without delamination or voiding during standard SMT processes.
How does the 25 pF capacitance of the ESD11A3.3DT5G affect USB 2.0 signal integrity?
The 25 pF capacitance of the ESD11A3.3DT5G is measured between each cathode and the common anode at 0 V bias and 1 MHz. In USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) applications, this value introduces negligible rise-time degradation (<5%) when placed within 3 mm of the connector, preserving eye diagram margins and ensuring USB-IF compliance.
Is the ESD11A3.3DT5G suitable for automotive applications?
Yes - the ESD11A3.3DT5G is AEC-Q101 qualified and PPAP capable, with guaranteed operation from −55 °C to +125 °C junction temperature. It is widely used in automotive infotainment systems for HDMI, USB, and audio interface protection where space, reliability, and ESD immunity are critical design constraints.
ESD11A3.3DT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOT-1123
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 5.2V
- Voltage - Clamping (Max) @ Ipp:
- 7.8V
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 25pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-1123
ESD11A3.3DT5G FAQ
1.How can I place an order for ESD11A3.3DT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD11A3.3DT5G 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 ESD11A3.3DT5G reliable?
The price and inventory of ESD11A3.3DT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD11A3.3DT5G is usually 5 days.
3.What payment methods are accepted for ESD11A3.3DT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD11A3.3DT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD11A3.3DT5G?
ESD11A3.3DT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD11A3.3DT5G 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 ESD11A3.3DT5G?
For technical support, including ESD11A3.3DT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD11A3.3DT5G requirements.
6.How does Aetrix verify that ESD11A3.3DT5G is sourced from the original manufacturer or authorized distributors?
All ESD11A3.3DT5G 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 ESD11A3.3DT5G meets industry standards.
7.What is the process for return or replacement of ESD11A3.3DT5G?
All ESD11A3.3DT5G units undergo pre-shipment inspection (PSI). If there is an issue with ESD11A3.3DT5G, 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 ESD11A3.3DT5G part is unused and in its original packaging.
Return procedure for ESD11A3.3DT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD11A3.3DT5G Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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ESD5Z3.3T1G
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D5V0H1B2LP-7B
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D12V0L1B2LP-7B
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PESD2V0Y1BSFYL
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