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ESD3Z12
Diotec Semiconductor
ESD SOD323F 1UA 12V UNIDIR
228490 Pcs New Original In Stock
25V Clamp 15A (8/20µs) Ipp Tvs Diode Surface Mount SOD-323
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5.0 / 5.0
- (163 Ratings)
ESD3Z12
Product Overview
9446589
DiGi Electronics Part Number
ESD3Z12-DGManufacturer
Diotec Semiconductor
ESD3Z12
Description
ESD SOD323F 1UA 12V UNIDIRInventory
228490 Pcs New Original In Stock
25V Clamp 15A (8/20µs) Ipp Tvs Diode Surface Mount SOD-323
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
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ESD3Z12 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
12V
Voltage - Breakdown (Min)
13.3V
Voltage - Clamping (Max) @ Ipp
25V
Current - Peak Pulse (10/1000µs)
15A (8/20µs)
Power - Peak Pulse
350W
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
150pF @ 1MHz
Operating Temperature
-50°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
SC-90, SOD-323F
Supplier Device Package
SOD-323
Datasheet & Documents
Datasheets
Download ESD3Z12 Product Specification (PDF)
HTML Datasheet
ESD3Z12-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
REACH Unaffected
HTSUS
8541.10.0000
Additional Information
Other Names
4878-ESD3Z12DKR
2796-ESD3Z12TR
4878-ESD3Z12CT
4878-ESD3Z12TR
2796-ESD3Z12TR-DG
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Je recommande vivement leur support après-vente, très disponible.
Dec 02, 2025
価格が魅力的で、信頼できるサポートもあり満点です。ビジネスに非常に役立っています。
Dec 02, 2025
Their support services are smooth, making my experience stress-free.
Dec 02, 2025
The products from DiGi Electronics have a solid build and excellent functionality.
Dec 02, 2025
Their ability to deliver promptly underpins our production schedules.
Dec 02, 2025
Their customer service team is knowledgeable and always ready to assist with technical issues.
Dec 02, 2025
Their team handles every concern with expert advice and genuine professionalism.
Dec 02, 2025
Navigation is intuitive, allowing me to find what I need quickly without any hassle.
Dec 02, 2025
The combination of fast shipping and low prices makes them stand out.
Dec 02, 2025
The delivery was incredibly fast, exceeding my expectations.
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Frequently Asked Questions (FAQ)
Can the ESD3Z12 be used to protect a high-speed data line like USB 2.0 without degrading signal integrity?
Yes, the ESD3Z12 can be used for USB 2.0 data line protection, but with careful consideration. With a typical capacitance of 150pF at 1MHz, it's on the higher end for high-speed signals. While acceptable for full-speed USB (12 Mbps), it may cause signal degradation in systems approaching higher bandwidths or tighter impedance tolerances. For better performance on high-speed lines, consider lower-capacitance alternatives like the SMF05C (typically 10pF) or SP3415-01UTG (5pF). If using the ESD3Z12, keep trace lengths short and avoid routing under the package to minimize parasitic effects and maintain signal fidelity.
How does the ESD3Z12 compare to the SMAJ12A when selecting a TVS diode for a 12V power rail in an automotive environment?
The ESD3Z12 and SMAJ12A both target 12V systems, but the SMAJ12A (SMA package) offers higher surge handling (400W vs 350W) and better thermal dissipation, making it more suitable for repeated transients in automotive settings. The ESD3Z12, in SOD-323F, is ideal for space-constrained, low-energy ESD events (e.g., connector interfaces), but not recommended for bulk transient suppression on power rails. Use the ESD3Z12 for board-level ESD protection on signal lines in 12V systems; for power line surges (Load Dump, ISO 7637), pair it with a higher-power device like the SMAJ12A or use the SMAJ12A alone. The ESD3Z12's 15A (8/20µs) rating is suitable only for infrequent, low-energy transients.
What are the thermal limitations of the ESD3Z12 in densely packed SMT designs?
The ESD3Z12, in the SOD-323F package, has limited thermal mass and relies on the PCB for heat dissipation. In dense layouts with minimal copper, repeated ESD events can lead to localized overheating and degradation. To mitigate risk, ensure at least 2mm² of adjacent copper pour connected to both terminals for thermal relief. Avoid placing the ESD3Z12 near high-temperature components (e.g., regulators, power FETs) and keep ambient temperatures below 105°C to maintain reliability. Derate the peak pulse current if operating above 85°C ambient. For frequent transient exposure, consider adding current-limiting resistors or selecting a device in a larger package.
Is the ESD3Z12 a reliable drop-in replacement for the ON Semiconductor ESD5Z12V2U-7 in a medical sensor interface?
The ESD3Z12 can serve as a functional replacement for the ESD5Z12V2U-7 in most cases, as both are unidirectional SOD-323F TVS diodes with 12V standoff and similar clamping voltages (~25V). However, the ESD5Z12V2U-7 is qualified to AEC-Q101 and has tighter parameter distributions, making it preferred in medical or safety-critical applications. The ESD3Z12 is not automotive-qualified and may have higher parameter variation. For medical designs requiring long-term reliability and consistency, validate the ESD3Z12 under real-world ESD stress (IEC 61000-4-2) and consider long-term aging effects. Prefer the original ESD5Z12V2U-7 for production-level designs where qualification status matters.
What design risks should be considered when using the ESD3Z12 for ESD protection on an exposed analog sensor input?
Using the ESD3Z12 on an analog sensor input introduces leakage current and capacitance risks. At maximum junction temperature (125°C), the leakage current can reach several microamps, potentially affecting high-impedance sensor measurements (e.g., pH, gas sensors). Additionally, its 150pF capacitance may filter out fast sensor transients or reduce bandwidth. Mitigate by placing the ESD3Z12 close to the connector, using a small series resistor (10–33Ω) to isolate capacitance, and ensuring sensor output impedance is low. Avoid using the ESD3Z12 in ultra-low-leakage or high-precision (>16-bit) systems without verifying performance under worst-case conditions.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
ESD3Z12 CAD Models
Diotec Semiconductor ESD3Z12 PCB symbols & footprints
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