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HomeProductsIntegrated Circuits (ICs)Specialized ICsESDA3.3CW-4
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ESDA3.3CW-4 - LEIDITECH

Manufacturer Part Number
ESDA3.3CW-4
Manufacturer
LEIDITECH
Allelco Part Number
32D-ESDA3.3CW-4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
17,470 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
Compare
Our certification
In stock: 17470
  • Unit Price: $0.124
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
5+ $0.124 $0.62
50+ $0.10 $5.00
150+ $0.091 $13.65
500+ $0.078 $39.00
3000+ $0.07 $210.00
6000+ $0.066 $396.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ESDA3.3CW-4 Tech Specifications
LEIDITECH - ESDA3.3CW-4 technical specifications, attributes, parameters and parts with similar specifications to LEIDITECH - ESDA3.3CW-4

Product Attribute Attribute Value
Part Number ESDA3.3CW-4
Package DAC91001
Description DAC91001
Stock Condition Get 17470 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 LEIDITECH
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 ESDA3.3CW-4 compare to other ESD protection diodes in terms of clamping voltage and peak pulse current for handling surge events?
The ESDA3.3CW-4 offers a clamping voltage of 10V at a 2.5A peak pulse current, which is typical for low-voltage signal line protection. Compared to higher-power TVS diodes rated for 10A or more, this device is optimized for transient energy levels around 100W under an 8/20µs waveform. Its lower Ipp makes it suitable for protecting sensitive interfaces like USB or HDMI, where excessive current could damage downstream ICs. Devices with higher clamping voltages may not offer sufficient margin for low-voltage rails, whereas the ESDA3.3CW-4 strikes a balance between response speed and overvoltage limitation.
What are the key differences between the ESDA3.3CW-4 and alternative ESD protection devices when considering junction capacitance and data integrity in high-speed circuits?
With a junction capacitance of only 13pF, the ESDA3.3CW-4 minimizes signal degradation in high-speed lines such as USB 2.0, Ethernet, or display interfaces. Many general-purpose TVS diodes have capacitances exceeding 50pF, which can introduce skew and attenuation. In contrast, the low capacitance of the ESDA3.3CW-4 ensures minimal impact on signal rise times and impedance matching. This characteristic makes it preferable over bulkier or higher-capacitance alternatives when preserving bandwidth and timing margins is critical.
Can the ESDA3.3CW-4 be used for surge protection in automotive applications, and what compliance standards support its deployment?
Yes, the ESDA3.3CW-4 supports surge immunity requirements aligned with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT/Burst), and IEC 61000-4-5 (Surge). These standards are commonly referenced in automotive and industrial environments. While it meets general ESD and surge criteria, full automotive qualification would require additional testing per AEC-Q101, which is not explicitly stated in the base part description. However, its robust protection up to 100W@8/20µs makes it viable for non-critical control lines or auxiliary systems where cost-sensitive design prioritizes functionality over certification.
How does the reverse leakage current of the ESDA3.3CW-4 affect power consumption in always-on sensor nodes or battery-powered IoT devices?
The ESDA3.3CW-4 exhibits a reverse leakage current of 10µA, which is relatively low for its voltage rating. In a typical IoT node drawing microamps from a 3.3V supply, this leakage represents about 33µW of wasted power. While individually small, in arrays of multiple ports or long-term deployments, cumulative leakage can slightly reduce battery life. Compared to devices with µA-level leakage, this is acceptable but not negligible; designers should assess whether lower-leakage alternatives exist if ultra-low standby power is a primary constraint.
What is the breakdown voltage threshold of the ESDA3.3CW-4, and how does it influence protection strategy for 3.3V digital lines?
The voltage breakdown is specified at 4.5V, which means the device begins conducting when the input exceeds this level by a small margin. Given the reverse stand-off voltage (Vrwm) is 3.3V, the ESDA3.3CW-4 is designed to clamp transients above 3.3V but below 10V. This implies that normal operating conditions stay safely within limits, while transient spikes are shunted before damaging connected components. Designers must ensure that no sustained overvoltage exceeds 3.3V to avoid unintended conduction or stress during normal operation.
Is the SOT-353-5 package of the ESDA3.3CW-4 suitable for space-constrained PCB layouts, and how does its footprint compare to larger packages?
Yes, the SOT-353-5 package is compact, measuring approximately 2.0 x 1.6 mm, making it ideal for modern PCB designs with high component density. It occupies significantly less area than TO-277 or DFN packages, allowing multiple protection channels to be placed near sensitive connectors or IC pins. When compared to larger alternatives, it enables better routing density without sacrificing ESD performance, though thermal dissipation is limited—making it best suited for moderate power transients rather than continuous high-current scenarios.
How does the peak pulse power rating of 100W@8/20µs inform the selection of the ESDA3.3CW-4 for specific transient environments?
The 100W capability at an 8/20µs waveform indicates the device can absorb energy typical of lightning-induced surges or inductive kickback in industrial settings. Each pulse can deliver up to 2.5A for the duration of the transient. This rating suggests suitability for environments where moderate-energy surges occur infrequently, such as factory automation or outdoor equipment. For higher-energy threats like direct lightning strikes, higher-rated TVS diodes would be required, but the ESDA3.3CW-4 provides adequate protection for most EMC test-level events.
What considerations apply when integrating the ESDA3.3CW-4 into a system with strict EMI and signal integrity requirements?
Due to its low capacitance (13pF), the ESDA3.3CW-4 introduces minimal parasitic loading on high-impedance or fast-edge-rate signals. Proper placement close to the protected port reduces trace inductance and ensures effective transient suppression. Care must be taken to maintain short, direct traces to minimize loop inductance, which could otherwise reduce the effectiveness of clamping. Grounding via a solid plane is recommended to provide a low-impedance return path for surge currents, enhancing overall robustness without degrading signal quality.
How does the Tape & Reel packaging of the ESDA3.3CW-4 benefit automated assembly processes in high-volume manufacturing?
The Tape & Reel (TR) packaging allows the ESDA3.3CW-4 to be fed directly into pick-and-place machines, streamlining SMT production. This format improves throughput, reduces manual handling errors, and supports continuous operation in automated lines. It also ensures consistent orientation and alignment during placement, critical for reliable soldering and electrical performance. For manufacturers producing thousands of units, this packaging reduces labor costs and increases yield compared to loose or tube-based alternatives.
Can the ESDA3.3CW-4 be paralleled with another diode to increase surge current handling?
While theoretically possible, paralleling the ESDA3.3CW-4 diodes is generally not recommended due to potential current imbalance caused by slight variations in forward characteristics. Unless carefully matched and thermally coupled, one device may carry disproportionate current during a surge event, leading to premature failure. Instead, designers should select a single device with higher Ipp if greater surge capacity is needed, rather than relying on parallelization for redundancy or increased rating.

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    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

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    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
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    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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ESDA3.3CW-4

LEIDITECH
32D-ESDA3.3CW-4

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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