LXES03TAA1-142
LXES03TAA1-142 - 5V Bi-Dir ESD TVS Diode, 0201 CSP | Murata
The Murata LXES03TAA1-142 is a bidirectional electrostatic discharge (ESD) protection transient voltage suppressor (TVS) diode housed in an ultra-miniature 2-bump CSP package (0.60 mm x 0.30 mm, 0.6 mm thickness) classified as an 0201 (0603 metric) footprint. It is engineered to clamp fast ESD transients on low-speed signal and data lines, offering a working voltage of 5 V and a typical breakdown voltage near 7 V with a low typical capacitance of approximately 5 pF. According to the Murata product specification, this part targets automotive powertrain and safety equipment as recommended applications and is qualified to the AEC-Q100 automotive stress-test standard.
A TVS (transient voltage suppressor) diode is a solid-state semiconductor device designed to protect downstream integrated circuits from high-voltage, fast-rise-time surge events such as ESD strikes (human-body model, IEC 61000-4-2), cable-discharge events, and load-dump transients. TVS diodes occupy a position in the broader component hierarchy of protection devices (TVS diode -> ESD suppressor -> surge protector -> circuit protection -> electromechanical/component). Unlike simple Zener clamps, TVS diodes are characterized by their peak pulse current (Ipp), clamping voltage, and response time (sub-nanosecond), making them the standard defense for USB, HDMI, antenna, and sensor interfaces in modern electronics.
Key features of the LXES03TAA1-142 include its bidirectional polarity (no orientation required during PCB assembly), a typical line capacitance near 5 pF that preserves signal integrity on low-speed lines, an extremely small 0201 footprint that minimizes PCB real estate, and compliance with IEC 61000-4-2 ESD ratings. The bidirectional construction allows it to be placed across a signal line without polarity concerns, simplifying layout. The 5 pF capacitance makes it suitable for general-purpose digital lines, keypads, control buttons, and sensor I/O rather than high-speed differential pairs.
Architecturally, the LXES03TAA1-142 uses a silicon PN-junction avalanche structure optimized for low capacitance. During an ESD event, the device transitions from a high-impedance state to a low-impedance avalanche breakdown mode within sub-nanoseconds, shunting the surge current to ground and clamping the line voltage to a safe value for the protected IC. After the transient, it returns to its high-impedance state with negligible leakage. This passive, polarity-independent behavior requires no external bias or control signals.
Typical applications include automotive CAN/LIN bus protection, keyless-entry remote receivers, USB 2.0 downstream-port ESD clamps, sensor signal-line protection, and handheld/mobile device I/O protection. The AEC-Q100 qualification makes the LXES03TAA1-142 suitable for under-hood and chassis automotive modules subject to harsh EMC environments.
A critical design consideration is capacitance: at 5 pF typical the part is appropriate for sub-100 MHz signal lines but may distort signals on high-speed interfaces such as USB 3.0, HDMI, or MIPI D-PHY/CPHY. For high-speed lines, choose a sub-1 pF TVS such as the LXES15TAA1-152 family.
This page synthesizes distributor pricing, parametric alternatives, and AEC-Q100 design notes that go beyond the manufacturer datasheet to help engineers select the right Murata LXES03 ESD device for their interface.
USD $0,14
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