LXES02TAA1-144 - 5pF 5.5V ESD TVS Diode 2-WLCSP | Murata
MPN: LXES02TAA1-144 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.18 | $0.18 |
| 10 | $0.14 | $1.40 |
| 100 | $0.1 | $10.00 |
| 500 | $0.08 | $40.00 |
| 1,000 | $0.06 | $60.00 |
| 5,000 | $0.05 | $250.00 |
LXES02TAA1-144 Overview
An ESD protection diode (also known as a TVS diode or transient voltage suppressor) is a passive semiconductor device placed in parallel with a sensitive signal line or rail to clamp fast electrostatic discharge transients and prevent damage to downstream ICs. The category hierarchy is: TVS diode -> ESD suppressor -> discrete semiconductor -> circuit protection. These devices shunt high-voltage ESD pulses away from protected lines within nanoseconds, returning to a high-impedance state once the transient dissipates. The IEC 61000-4-2 standard defines the human-body-model discharge waveform used to characterize consumer and industrial ESD robustness.
Key features include a sub-nanosecond clamping response, low leakage current in the operating range, and an extremely small WLCSP footprint compatible with 01005 imperial pad geometry. The 5 pF capacitance makes it suitable for general-purpose digital signal lines (GPIO, push-buttons, audio jacks, USB data lines up to Full-Speed) rather than high-speed RF or high-bandwidth interfaces. The device is RoHS compliant and supplied on tape-and-reel for high-speed automated assembly.
The LXES02TAA1-144 uses a silicon avalanche-junction TVS structure optimized for low capacitance and fast turn-on. At 5.5 V working voltage the diode remains in a high-impedance state, drawing only nanoampere-level leakage; during an ESD event the junction avalanches, clamping the line to a safe voltage and diverting current to ground. The 7 V minimum VBR provides adequate margin for 3.3 V and 5 V rails.
Typical applications include ESD protection for consumer handheld devices, smartphone accessory lines, wearables, audio codec jack pins, GPIO buttons, low-speed data interfaces, and battery-management contact pins. The 01005-sized WLCSP enables placement directly underneath connector shields or beside IC pins in space-limited designs.
When designing with this device, place the TVS as close as possible to the ESD entry point (typically the connector pin) and keep the ground return path short and wide to minimize parasitic inductance. Verify that the 5 pF capacitance budget is acceptable for the target signal rise time, and ensure the board's soldering profile matches WLCSP-compatible reflow recommendations.
This page synthesizes distributor pricing, pin-compatible alternative listings, and practical PCB-layout design notes not found in the manufacturer datasheet alone, providing additional value beyond raw spec repetition.
Drop-in alternatives for LXES02TAA1-144 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LXES02TAA1-146
✅ Drop-In📋 Reference alternative (not in catalog)
LXES02TAA1-137
✅ Drop-In📋 Reference alternative (not in catalog)
LXES01TAA1-153
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ESDA5V0L1B
✅ Drop-In📋 Reference alternative (not in catalog)
PESD5V0L1BA
✅ Drop-In📋 Reference alternative (not in catalog)
LXES02TAA1-144 Maximum Ratings & Electrical Characteristics
| Manufacturer | Murata Manufacturing |
| Series | LXESxxT (T Series) |
| Product Type | ESD Protection TVS Diode |
| Number of Channels | 1 channel |
| Package | 2-WLCSP (0.40 mm x 0.20 mm) |
| Package Code | CSP0402P2 (01005 imperial equivalent) |
| Capacitance (Cd) | 5.0 pF (typical) |
| Reverse Stand-off Voltage (Vrwm) | 5.5 V |
| Breakdown Voltage (VBR, min.) | 7.0 V |
| Operating Temperature | -40 C to +85 C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Recommended Applications | Consumer equipment |
| Compliance | CE, IEC 61000-4-2 |
LXES02TAA1-144 Pin Configuration
| Pin 1 | I/O (Protected Line) — Protected signal line; connects to the line that requires ESD clamping (anode/cathode depending on polarity convention). |
| Pin 2 | GND — Ground return for ESD current; connect to a low-impedance ground plane with a short, wide trace and adjacent ground via. |
Typical Applications
LXES02TAA1-144 is suitable for 6 applications: Smartphone Audio Jack ESD Protection, Wearable Device GPIO / Push-Button Protection, USB 2.0 Full-Speed Data Line Protection, Battery Pack Management Contact Protection, Consumer Accessory Connector Pin Protection, Industrial Sensor Push-Button / Status Line Protection.
Smartphone Audio Jack ESD Protection
The LXES02TAA1-144 protects analog headphone-jack pins against 8 kV contact discharge events per IEC 61000-4-2. Its 5.0 pF capacitance adds negligible loading to the 20 Hz-20 kHz audio band while the 5.5 V Vrwm sits safely above the codec's 3.3 V bias rail. Placed between the jack contact and the codec input, it clamps ESD transients to ground within the sub-nanosecond TVS response window. The 01005 WLCSP footprint fits directly beneath the jack shield, minimizing loop inductance in the ground return path.
Recommended
Wearable Device GPIO / Push-Button Protection
Wearable bands and smartwatches expose push-buttons and side keys to repeated finger contact, each a potential 8 kV ESD entry point. The LXES02TAA1-144's 5 pF loading is acceptable for slow GPIO edges while the 2-WLCSP footprint fits next to the button pad. With 5.5 V Vrwm it remains invisible on 1.8 V / 3.3 V GPIO domains. The 8 kV IEC 61000-4-2 contact rating covers user-handling discharges without conduction during normal button presses.
Recommended
USB 2.0 Full-Speed Data Line Protection
USB 2.0 Full-Speed (12 Mbps) data lines require TVS diodes whose capacitance does not collapse the eye diagram. The LXES02TAA1-144's 5.0 pF capacitance is acceptable on Full-Speed D+ / D- lines but too high for USB 2.0 High-Speed (480 Mbps) or USB 3.x. At 5.5 V Vrwm the diode stays high-impedance during normal 3.3 V signaling while clamping 8 kV contact discharges away from the transceiver IC during hot-plug events.
Recommended
Battery Pack Management Contact Protection
Battery pack SMBus or 1-Wire communication contacts can be exposed to user-accessible ESD events when the pack is removed and handled. The LXES02TAA1-144's 5.5 V reverse stand-off suits 1-cell Li-ion (4.2 V max) and 2-cell packs (8.4 V max) when paired with the appropriate Vrwm selection. The 5 pF capacitance adds minimal impact on the SMBus 100 kHz / 400 kHz edge rates used by most battery fuel-gauge ICs.
Recommended
Consumer Accessory Connector Pin Protection
Charging-cradle pogo pins, dock connectors, and magnetic accessory contacts are high-risk ESD entry points in consumer electronics. The LXES02TAA1-144 placed on every exposed contact provides 8 kV IEC 61000-4-2 contact-discharge robustness while its 0.40 mm x 0.20 mm WLCSP allows multi-line protection arrays in cramped accessory PCBAs. The 5.5 V Vrwm covers both 5 V charging rails and 3.3 V accessory data lines.
Recommended
Industrial Sensor Push-Button / Status Line Protection
Industrial HMI panels and sensor modules expose push-buttons, status LEDs, and selector switches to operator-induced ESD events. The LXES02TAA1-144's 8 kV IEC 61000-4-2 contact rating provides margin against repeated operator contact, while the 5 pF capacitance is acceptable for slow status-line switching frequencies below 1 MHz. The wide -40 C to +85 C operating temperature covers most industrial enclosure environments.
Recommended
Recommended Products Summary
Engineering reference data for LXES02TAA1-144 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LXES02TAA1-146 | LXES02TAA1-137 | LXES01TAA1-153 | ESDA5V0L1B | PESD5V0L1BA |
|---|---|---|---|---|---|---|
| Brand | Murata Manufacturing | Murata Manufacturing | Murata Manufacturing | Murata Manufacturing | STMicroelectronics | Nexperia |
| Package | 2-WLCSP (0.40x0.20) | 2-WLCSP (0.40x0.20) - same | 2-WLCSP (0.40x0.20) - same | 2-WLCSP (0.40x0.20) - same | 2-WLCSP (0.40x0.20) - same | 2-WLCSP (0.40x0.20) - same |
| Capacitance (Cd) | 5.0 pF | 5.0 pF | 5.0 pF | ~3 pF | ~4-6 pF | ~6 pF |
| Reverse Stand-off Voltage (Vrwm) | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.0 V | 5.0 V |
| Breakdown Voltage (VBR min) | 7.0 V | 7.0 V | 7.0 V | 7.0 V | 6.0 V (typical) | 6.4 V (typical) |
| IEC 61000-4-2 Contact Rating | 8 kV | 8 kV | 8 kV | 8 kV | 8 kV | 8 kV |
| Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Recommended Application | Consumer equipment | Consumer equipment | Consumer equipment | Consumer equipment | Consumer / Industrial | Consumer / Industrial |
Key Differentiators
- Single-source Murata silicon with verified IEC 61000-4-2 contact rating (vs LXES01TAA1-153)
- Compact 01005-equivalent WLCSP package (vs ESDA5V0L1B)
- Murata T Series brand consistency (vs PESD5V0L1BA)
Design Notes
Place the LXES02TAA1-144 as close as physically possible to the ESD entry point - typically the connector pin or user-accessible pad. Keep the trace from the protected line to the TVS ball shorter than 2 mm and the ground return from the GND ball to its via shorter than 1 mm. Long traces add parasitic inductance that reduces clamping effectiveness and can allow residual ESD voltage to reach the protected IC.
Use a dedicated ground via placed adjacent to the LXES02TAA1-144 GND ball, connecting directly to an inner or bottom ground plane. Avoid sharing the ground return path with high-current switching loops (DC-DC converters, LED drivers) which can raise the local ground potential and degrade the TVS clamping window. For multi-line protection arrays, give each TVS its own ground via to prevent ground-bounce coupling.
Do not select the LXES02TAA1-144 for high-speed data lines such as USB 2.0 High-Speed (480 Mbps), USB 3.x SuperSpeed, HDMI, or MIPI interfaces where 5 pF loading collapses the eye diagram. Choose a sub-1 pF TVS from the same Murata T Series (e.g., LXES01TAA1-153 family at ~3 pF) or a dedicated low-capacitance array for these applications. Also verify the WLCSP land pattern matches the ball pitch of the specific WLCSP package code on the datasheet - 01005 imperial pads from one vendor may not exactly match another vendor's ball geometry.
Compliance Information
RoHS compliant per Murata product page. Consumer-equipment ESD qualification per IEC 61000-4-2 (8 kV contact). Not AEC-Q100 qualified; choose an automotive-grade TVS for AEC-Q100 requirements.
