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UET14A05L03-BK
YAGEO
TVS DIODE 5VWM 15VC SOT143
17085 Pcs New Original In Stock
15V (Typ) Clamp 3A (8/20µs) Ipp Tvs Diode Surface Mount SOT-143
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5.0 / 5.0
- (53 Ratings)
UET14A05L03-BK
Product Overview
9601920
DiGi Electronics Part Number
UET14A05L03-BK-DGManufacturer
YAGEO
UET14A05L03-BK
Description
TVS DIODE 5VWM 15VC SOT143Inventory
17085 Pcs New Original In Stock
15V (Typ) Clamp 3A (8/20µs) Ipp Tvs Diode Surface Mount SOT-143
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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UET14A05L03-BK Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
UET14A05L03-BK
Product Status
Active
Type
Steering (Rail to Rail)
Unidirectional Channels
2
Voltage - Reverse Standoff (Typ)
5V (Max)
Voltage - Breakdown (Min)
6V
Voltage - Clamping (Max) @ Ipp
15V (Typ)
Current - Peak Pulse (10/1000µs)
3A (8/20µs)
Power - Peak Pulse
-
Power Line Protection
Yes
Applications
Ethernet, USB
Capacitance @ Frequency
0.8pF @ 1MHz
Operating Temperature
-55°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
TO-253-4, TO-253AA
Supplier Device Package
SOT-143
Datasheet & Documents
HTML Datasheet
UET14A05L03-BK-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Affected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
13-UET14A05L03-BKCT
13-UET14A05L03-BKDKR
13-UET14A05L03-BKTR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Je suis très satisfait de la constance dans la qualité de leurs produits.
Dec 02, 2025
DiGi Electronics consistently impresses me with their cost-effective and eco-conscious packaging.
Dec 02, 2025
Their swift dispatch service means I often receive new supplies within a day of placing my order.
Dec 02, 2025
Excellent quality and fast shipping—highly satisfied.
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Frequently Asked Questions (FAQ)
When designing in the UET14A05L03-BK for USB 2.0 data line protection, how can I ensure the 15V typical clamping voltage won't damage sensitive downstream ICs during an ESD event?
The UET14A05L03-BK is specifically designed for low-capacitance signal lines like USB 2.0, with a 15V typical clamping voltage at 3A (8/20µs). While most USB 2.0 transceivers tolerate short-duration transients up to 18V, always verify the absolute maximum ratings of your USB controller. To mitigate risk, ensure PCB layout minimizes trace inductance between the connector and UET14A05L03-BK, keeping the transient impedance low so energy is shunted before reaching the IC. Use controlled impedance routing and avoid vias in the protection path to maintain effective clamping performance under fast ESD pulses (IEC 61000-4-2).
Can the UET14A05L03-BK replace the SMF05C or SP3012-05UTG in a rail-to-rail ESD protection circuit for Ethernet PHYs without changing the PCB footprint?
Yes, the UET14A05L03-BK can functionally replace the SMF05C or SP3012-05UTG in Ethernet 10/100BASE-TX data line protection, as all three devices feature bidirectional (steering) protection with similar 5V reverse standoff and low capacitance (~1pF). However, confirm pin compatibility: the UET14A05L03-BK in SOT-143 has a different pinout (IN+, IN-, GND, VCC) compared to the DO-214AA package of SP3012-05UTG. PCB re-layout will be required. Also, verify that the UET14A05L03-BK's 3A peak pulse rating meets your surge immunity requirements (e.g., IEC 61000-4-5) – it's suitable for ESD and EFT but not high-energy surges.
What are the thermal design risks when using the UET14A05L03-BK in a high-temperature industrial environment near 125°C ambient?
The UET14A03-BK is rated for operating junction temperatures up to 150°C, making it suitable for 125°C ambient environments if thermal dissipation is managed. However, since it lacks a specified peak pulse power rating, multiple repetitive transients (e.g., industrial EFT events) can cause cumulative heating. To mitigate thermal stress, ensure adequate copper pour on TVS traces—minimum 200 mils² connected to ground—avoid placing near hot components, and derate the number of expected surge events per hour. Simulate or measure temperature rise under sustained transient conditions to validate reliability over the product lifetime.
How does the 0.8pF capacitance of the UET14A05L03-BK impact signal integrity in 100Mbps Ethernet applications, and what layout practices should I follow?
The UET14A05L03-BK's 0.8pF capacitance per line is well below the 1.5pF typical limit for 100Mbps Ethernet magnetics, making it safe for signal integrity. However, at higher frequencies or in tightly matched differential pairs, even small capacitance imbalances can cause skew. To preserve signal fidelity, place the UET14A05L03-BK symmetrically on both D+ and D- lines, minimize trace length between the connector and the device (<10mm), and avoid stubs. Use a solid ground plane underneath and maintain consistent impedance—this ensures the low capacitance advantage of the UET14A05L03-BK is fully realized without introducing reflections or jitter.
In a compact consumer electronics design, what are the reliability risks of using the UET14A05L03-BK without additional overcurrent protection on USB VBUS lines?
The UET14A05L03-BK is intended for signal line protection (e.g., D+/D-) and is not rated for direct VBUS connection due to its 6V minimum breakdown voltage and lack of sustained overcurrent handling. Connecting it to VBUS risks failure during overvoltage or latch-up events. Always use a dedicated overvoltage protection IC or fuse in series with VBUS. The UET14A05L03-BK should only protect data lines. Misapplication to power rails—even transiently—can void protection and damage downstream circuitry; double-check net assignments during PCB bring-up to avoid incorrect TVS placement.
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.
UET14A05L03-BK CAD Models
YAGEO UET14A05L03-BK PCB symbols & footprints
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