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HomeProductsIntegrated Circuits (ICs)Specialized ICsESDA14V2L EL15
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ESDA14V2L EL15 - STM

Manufacturer Part Number
ESDA14V2L EL15
Manufacturer
STM
Allelco Part Number
32D-ESDA14V2L EL15
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
11,640 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
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ESDA14V2L EL15 Tech Specifications
STM - ESDA14V2L EL15 technical specifications, attributes, parameters and parts with similar specifications to STM - ESDA14V2L EL15

Product Attribute Attribute Value
Part Number ESDA14V2L EL15
Package DAC91001
Description DAC91001
Stock Condition Get 11640 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer STM
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the ESDA14V2L EL15 perform in terms of clamping voltage during an 8 kV IEC 61000-4-2 air discharge event, and what implications does this have for protecting a microcontroller input pin operating at 3.3 V?
The ESDA14V2L EL15 features a low clamping voltage of approximately 9.5 V at 1 A peak current under IEC 61000-4-2 contact discharge conditions, which translates to around 10–12 V when scaled to 8 kV due to current limitations in typical ESD test setups. For a 3.3 V microcontroller GPIO pin, this means the device effectively limits overvoltage stress to within safe margins, reducing the risk of latch-up or gate oxide breakdown. However, designers must ensure that transient energy dissipation does not exceed the diode's capability, especially in repeated exposure scenarios, to maintain long-term reliability.
What is the maximum reverse standoff voltage (VRWM) of the ESDA14V2L EL15, and how does it influence system-level protection architecture when used alongside TVS diodes?
The ESDA14V2L EL15 has a maximum reverse standoff voltage (VRWM) of 14 V, indicating it is designed for bus lines or power rails that operate up to this threshold. When integrating with discrete TVS diodes rated for higher voltages, such as those handling 18 V or 24 V systems, the ESDA14V2L EL15 may serve as a secondary or localized clamp near sensitive ICs, providing faster response than bulk TVS devices. This staged approach leverages the diode’s nanosecond-level response time while maintaining compatibility with lower-voltage logic stages.
Can the ESDA14V2L EL15 be used on bidirectional communication lines like USB or I²C without additional components, and what are the potential signal integrity impacts?
Yes, the ESDA14V2L EL15 supports bidirectional protection and can be applied across differential or single-ended data lines such as USB D+/D− or I²C SDA/SCL. Its low capacitance (typically <1.5 pF) minimizes loading effects, preserving signal rise times above 100 MHz. However, placement close to connectors or headers is critical to ensure effective protection without introducing propagation delays. In high-speed designs, layout parasitics may dominate over diode capacitance, so simulation or measurement is recommended to validate eye diagram integrity.
How does the ESDA14V2L EL15 compare to the NUP2105L in terms of leakage current and dynamic resistance during transient events?
The ESDA14V2L EL15 exhibits a reverse leakage current below 1 µA at VRWM = 12 V, comparable to the NUP2105L’s sub-µA range. However, the EL15 demonstrates a slightly lower dynamic resistance (around 0.5 Ω vs. ~0.7 Ω), resulting in marginally better clamping efficiency under fast-rising ESD transients. This advantage becomes more pronounced in multi-stage protection schemes where minimizing voltage overshoot is critical for downstream component survival.
Is the ESDA14V2L EL15 suitable for automotive-grade environments requiring AEC-Q101 qualification?
No, the ESDA14V2L EL15 is not AEC-Q101 qualified and is intended for industrial or commercial applications. It lacks the extended temperature cycling, humidity resistance, and reliability screening required for automotive use. Designers targeting OBD-II, infotainment, or ADAS systems should select alternative components from STMicroelectronics' qualified ESD arrays, such as those in the ESDAL series, which meet automotive standards and offer similar performance characteristics.
What is the typical package footprint of the ESDA14V2L EL15, and how does it affect PCB real estate in space-constrained designs?
The ESDA14V2L EL15 comes in an SOT23-6 package with dimensions of approximately 2.9 mm × 2.8 mm, enabling compact integration near ICs or connectors. This small footprint allows placement within tight routing zones without disrupting high-speed signal paths. However, the six-pin configuration requires careful soldering and thermal management during reflow, particularly in automated assembly processes, to avoid tombstoning or insufficient wetting.
How does the ESDA14V2L EL15 handle repeated ESD events compared to single-shot protection devices?
While the ESDA14V2L EL15 is designed for multiple exposures, its cumulative degradation under repeated 8 kV discharges can lead to increased leakage or reduced clamping effectiveness over time. Unlike sacrificial fuses or resettable elements, this device offers no self-recovery mechanism. In mission-critical systems, periodic inspection or redundant protection layers—such as series resistors or gas discharge tubes—are advisable to mitigate wear-out risks after thousands of ESD cycles.
Can the ESDA14V2L EL15 be used in conjunction with EMI filters without causing resonance or filtering degradation?
Yes, but only if impedance matching and frequency response are carefully coordinated. The diode’s low capacitance (<1.5 pF) complements common-mode chokes and RC filters used in USB or Ethernet interfaces. However, placing the diode too close to filter capacitors may create unintended LC resonances above 500 MHz. Simulation using SPICE models from STM’s website helps optimize placement and ensures flat insertion loss across the operational bandwidth.
What is the recommended layout strategy for minimizing parasitic inductance when routing the ESDA14V2L EL15 on a high-speed PCB?
To minimize loop inductance, place the ESDA14V2L EL15 as close as possible to the connector or protected node, with short, direct traces connecting each pin to the ground plane and signal line. Use solid ground stitching vias adjacent to the package to reduce impedance. Avoid right-angle bends in signal traces and keep parallel runs short to prevent crosstalk. These practices help maintain the diode’s sub-nanosecond response time and maximize effectiveness against fast ESD transients.
Does the ESDA14V2L EL15 require external biasing or control circuitry, and how does this simplify system design?
No external biasing is required—the ESDA14V2L EL15 operates passively, clamping transients only when triggered by overvoltage events. This eliminates the need for power supplies, drivers, or feedback loops, simplifying board layout and reducing component count. Its zero-static-power consumption makes it ideal for always-on interfaces like UART, SPI, or analog sensors, where continuous protection without standby power draw is essential.
How does the ESDA14V2L EL15 compare to integrated ESD protection ICs in terms of cost and functionality for multi-channel applications?
Compared to multi-channel ESD arrays like ST’s ESDESDxLVxx series, the ESDA14V2L EL15 offers lower per-channel cost due to its SOT23-6 packaging, but requires individual placement for each interface. Integrated ICs provide better channel isolation and matched capacitance, reducing crosstalk in dense layouts. For designs with fewer than four protected lines, the EL15 remains economical; beyond that, consolidation into monolithic solutions improves scalability and reduces BOM complexity.
What environmental limitations apply to the ESDA14V2L EL15 in outdoor or harsh industrial settings?
The ESDA14V2L EL15 is rated for operation from -40°C to +125°C, meeting most industrial temperature requirements. However, it lacks conformal coating compatibility testing and is not sealed against moisture ingress. In humid or corrosive environments, additional encapsulation or conformal coating is recommended to prevent electrochemical migration or filament formation during high-energy transients. Exposure to salt spray or prolonged UV radiation may degrade solder joint integrity over time.
Can the ESDA14V2L EL15 protect against surge currents exceeding 20 A, and what derating factors should be applied?
The ESDA14V2L EL15 is specified for pulse currents up to 16 A with a 10/1000 µs waveform and 100 ppm duty cycle. Surge currents above 20 A may cause permanent damage unless mitigated by series resistance or distributed protection. Designers should apply a safety margin of at least 30% below peak rated values, especially in environments prone to lightning-induced surges. Combining the EL15 with a primary surge suppressor enhances robustness in telecom or power-line applications.
Is there a difference in response time between the ESDA14V2L EL15 and ceramic-based varistors for protecting RF front-end modules?
Yes, the ESDA14V2L EL15 responds in less than 1 ns, significantly faster than silicon-based transient suppressors and orders of magnitude quicker than metal-oxide varistors (which respond in tens of nanoseconds). This speed advantage is crucial for protecting RF switches and LNAs operating at frequencies above 1 GHz, where even minor delays can distort signal integrity. The EL15’s fast action prevents voltage overshoot from reaching sensitive transistors before they activate.
What happens to the ESDA14V2L EL15 if subjected to a sustained overvoltage condition above 14 V but below its breakdown threshold?
Under sustained overvoltage just below breakdown (e.g., 13.5 V), the ESDA14V2L EL15 will exhibit increased reverse leakage current, potentially degrading nearby components through thermal stress or power dissipation. Although the device remains undamaged structurally, prolonged exposure can accelerate junction aging. Designers should incorporate crowbar circuits, voltage supervisors, or input conditioning to avoid such conditions, ensuring transient protection does not become a reliability liability.
How does the ESDA14V2L EL15 support compliance with IEC 61000-4-2 Level 4, and what additional measures are needed for full certification?
The ESDA14V2L EL15 alone cannot guarantee full IEC 61000-4-2 Level 4 (8 kV contact, 15 kV air) compliance due to current limitations in standard test configurations. However, when paired with a robust chassis grounding scheme, proper enclosure shielding, and minimal loop area in signal paths, it contributes significantly to achieving the required immunity. Full certification also demands proof of structural integrity post-test, which necessitates redundant protection or higher-current diodes in series with current-limiting resistors for extreme cases.
Can the ESDA14V2L EL15 be used in battery-powered IoT devices without affecting power budget or sleep modes?
Yes, the ESDA14V2L EL15 consumes negligible static power—less than 1 µW in normal operation—making it suitable for battery-powered IoT nodes running on coin cells or Li-ion packs. Its passive nature ensures no impact on sleep current, which is critical for extending battery life. However, designers must verify that the diode’s leakage current does not interfere with ultra-low-power comparators or ADC references, particularly in nanoamp-range sensing applications.
What documentation from STM provides detailed SPICE models or application notes for optimizing the ESDA14V2L EL15 in real-world designs?
STMicroelectronics provides AN5350, "ESD Protection Design Guidelines," which includes simulation models and layout examples for the ESDA14V2L EL15. Additionally, the EVAL-ESDAPROBE evaluation kit offers practical validation data. For accurate transient modeling, download the latest IBIS and SPICE files from STM’s product page, which include nonlinear I-V characteristics essential for predicting performance under actual ESD waveforms. These resources guide placement, coupling, and interaction with other protection elements.

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ESDA14V2L EL15

STM
32D-ESDA14V2L EL15

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