0402ESDA-05N - 5V Bidirectional Polymer ESD Suppressor | BORN
MPN: 0402ESDA-05N ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.0111 | $0.01 |
| 10 | $0.0107 | $0.11 |
| 100 | $0.0107 | $1.07 |
| 500 | $0.0107 | $5.35 |
| 1,000 | $0.0107 | $10.70 |
Drop-in alternatives for 0402ESDA-05N — 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:
0402ESDA-18N
✅ Drop-In📋 Reference alternative (not in catalog)
0402ESDA-MLP1
✅ Drop-In✓ In Stock
$0.042 / Unit
View Datasheet →0402ESDA-05N Maximum Ratings & Electrical Characteristics
| Device Type | Bidirectional polymer ESD suppressor |
| Reverse Standoff Voltage (VRWM) | 5 V |
| Maximum Withstand Voltage | 50 V |
| Capacitance | 1.5 pF |
| Leakage Current | 1 nA |
| Polarity | Bidirectional |
| ESD Standard | IEC 61000-4-2 |
| Number of Protected Lines | 1 |
| Package | 0402 (1005 Metric) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| Technology | Polymer |
| RoHS Status | Compliant |
0402ESDA-05N Pin Configuration
| Pin 1 | Terminal 1 — Bidirectional ESD terminal - connect to protected signal line (polarity-independent) |
| Pin 2 | Terminal 2 — Bidirectional ESD terminal - connect to ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
0402ESDA-05N is suitable for 6 applications: USB 2.0 Port Protection, HDMI and Display Interface ESD Protection, RF Antenna Line Protection, Smartphone and Wearable Consumer Electronics, Industrial Control Panel Field Wiring, Set-Top Box and Networking Equipment.
USB 2.0 Port Protection
The 0402ESDA-05N protects D+ and D- lines of USB 2.0 ports in smartphones, tablets, and hubs. Its 1.5 pF capacitance adds negligible loading to 480 Mbps differential signaling, preserving eye-diagram margin where silicon TVS diodes with 3-10 pF would degrade the signal. Placed between the USB connector and the PHY with 0402 land patterns directly on the data traces, the device clamps IEC 61000-4-2 contact discharges of up to the tested level within nanoseconds, diverting the surge to ground before it reaches the transceiver. The bidirectional 5V rating covers both data lines and 5V VBUS-adjacent logic. Because leakage is only 1 nA, it adds no measurable standby current in always-connected designs. Layout should follow zero-stub practice: suppressor pad 1 directly on the signal line and pad 2 directly on the ground pour to minimize series inductance and ESD overshoot.
Recommended
HDMI and Display Interface ESD Protection
HDMI TMDS pairs running at hundreds of megahertz to multi-gigabit rates demand protection capacitance well below 2 pF, which is exactly where the 0402ESDA-05N fits with its 1.5 pF rating. One device per TMDS or DDC line provides bidirectional IEC 61000-4-2 clamping without violating HDMI capacitance budgets. The 0402 body keeps the parasitic loop short when placed immediately behind the HDMI connector. During a human-body discharge to the connector shell or pins, the polymer element transitions to a conductive state in nanoseconds and recovers automatically, requiring no service action. Designers should verify total channel capacitance including trace, connector, and suppressor stays within the interface specification, and keep ground return paths solid under each device. The 5V bidirectional standoff matches the DDC line's 5V level, and the -40C to +85C range covers consumer operating conditions.
Recommended
RF Antenna Line Protection
RF front-ends in IoT modules, Wi-Fi routers, and cellular devices require ESD devices with minimal added capacitance so that impedance matching is not disturbed. At 1.5 pF, the 0402ESDA-05N introduces a small, predictable shunt susceptance that can even be absorbed into the matching network, making it viable on antenna feed lines up to several gigahertz with modest insertion loss. The bidirectional 5V rating tolerates RF swing on matched lines while the 1 nA leakage adds no DC bias disturbance. Place the device immediately at the antenna connector, ahead of the low-noise amplifier or power amplifier, using a short, wide ground return to clamp ESD strikes before they reach the sensitive transceiver. Compared with silicon ESD diodes in the same 0402 footprint, polymer technology's lower capacitance preserves noise figure and match, at the cost of no sustained overvoltage clamping.
Recommended
Smartphone and Wearable Consumer Electronics
Smartphones, earbuds charging cases, and wearables pack many exposed connector pins into a small area, raising ESD exposure per line. The 0402ESDA-05N occupies just 1.0 x 0.5 mm of board space, allowing per-line protection on button flex connectors, FPC test points, and accessory pins without layout penalty. Its sub-1 pA-scale leakage (1 nA maximum) preserves multi-month standby battery life, and the -40C to +85C range covers both outdoor and body-worn environments. In high-density boards, each device is placed at the board-to-flex transition with direct via-to-ground stitching. IEC 61000-4-2 immunity at the connector is the acceptance criterion for most consumer qualification programs, and the polymer element's nanosecond transition handles the fast rise time of contact discharge. At roughly $0.011 per unit as of 2026-09-14, per-line cost is negligible in high-volume builds.
Recommended
Industrial Control Panel Field Wiring
Industrial panels route field-wired signals from sensors and operator devices through connectors that personnel touch during maintenance, creating routine ESD events. The 0402ESDA-05N protects 5V logic-level field signal lines with its bidirectional 5V standoff, clamping discharges per IEC 61000-4-2 before they reach PLC or MCU inputs. The -40C to +85C operating range matches typical industrial enclosure conditions, and the 1 nA leakage keeps analog sense lines undisturbed. Note that polymer suppressors protect against fast ESD transients, not sustained industrial surge energy per IEC 61000-4-5; combine the 0402ESDA-05N with series current limiting or a silicon TVS for combined ESD-plus-surge zones. Placement at the terminal block, ahead of any optocoupler or buffer, gives best clamping. The 0402 footprint suits dense I/O cards where per-channel protection is required on dozens of lines.
Recommended
Set-Top Box and Networking Equipment
Set-top boxes, routers, and Ethernet-adjacent consumer gateways expose HDMI, USB, and push-button lines to user contact. The 0402ESDA-05N provides per-line ESD suppression with 1.5 pF capacitance that does not impair 480 Mbps USB or gigabit-class differential signaling, and its bidirectional 5V rating suits both data and low-voltage control lines. In production, placing one device at each external connector - pad 1 on the signal trace, pad 2 on a short via to the ground plane - delivers IEC 61000-4-2 compliance with minimum overshoot. The device's automatic recovery after each transient event means field ESD strikes cause no serviceable damage and no field replacement. At approximately $0.0107 at volume as of 2026-09-14, equipping an entire external connector set adds only a few cents of BOM cost while reducing warranty returns from ESD-induced port failures, a common consumer electronics failure mode.
Recommended
Recommended Products Summary
Engineering reference data for 0402ESDA-05N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 0402ESDA-18N | 0402ESDA-MLP1 |
|---|---|---|---|
| Package | 0402 (1005 Metric) | 0402 (1005 Metric) - same | 0402 (1005 Metric) - same |
| Brand | BORN (Bourne Semicon Shenzhen) | BORN (Bourne Semicon Shenzhen) | Eaton |
| Standoff Voltage | 5 V bidirectional | 18 V bidirectional | 35 V rated |
| Capacitance | 1.5 pF | [DATA_NEEDED] | [DATA_NEEDED] |
| Leakage Current | 1 nA | [DATA_NEEDED] | [DATA_NEEDED] |
| Polarity | Bidirectional | Bidirectional | Bidirectional (polymer TVS) |
| Operating Temperature | -40C to +85C | [DATA_NEEDED] | [DATA_NEEDED] |
| Unit Price (qty 1) | $0.0111 (as of 2026-09-14) | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Lower standoff rating fits 5V logic and USB lines precisely (vs 0402ESDA-18N)
- Commodity price at high volume (vs 0402ESDA-MLP1)
- Trade-off: no sustained overvoltage clamping (vs 0402ESDA-MLP1)
Design Notes
Place the 0402ESDA-05N as close to the connector or signal entry point as possible, ahead of any other component on the protected line. Use a zero-stub pad design: the signal-side pad lands directly on the data trace and the ground-side pad connects directly to a via to the ground plane. Every nanohenry of series inductance between the suppressor and ground increases clamping voltage during the nanosecond-scale ESD transient, so keep the ground via short, wide, and multiple if space allows. This mirrors Eaton's published layout guidance for the 0402ESDA polymer family.
The 0402ESDA-05N is an ESD-event device, not a sustained overvoltage clamp. Do not use it to replace a silicon TVS on lines subject to continuous overvoltage or surge energy per longer-duration standards (e.g., lightning-induced surge); the polymer element handles fast ESD transients and recovers, but it will not absorb sustained fault energy. Also verify the standoff: applying more than 5V continuously can degrade the device. On mixed-protection lines, place the polymer suppressor at the connector and any silicon TVS farther downstream.
Budget total channel capacitance, not just the suppressor: 1.5 pF from the 0402ESDA-05N plus trace, connector, and IC pin capacitance must stay within the interface specification for USB, HDMI, or RF lines. For RF lines above 1 GHz, simulate the suppressor's shunt susceptance within the matching network; the capacitance can often be absorbed by adjusting the matching element values. Because the device is bidirectional, orientation on the PCB is irrelevant, which simplifies assembly and reduces placement errors in high-volume SMT production.
Compliance Information
RoHS compliant per LCSC and JLCPCB listings and X-On Electronics confirmation. REACH and MSL not stated in available distributor data.
