PESD3V3S5U - 5-Line 3.3V 200W ESD Protection Array | Nexperia
MPN: PESD3V3S5U β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.34 | $0.34 |
| 10 | $0.28 | $2.80 |
| 100 | $0.19 | $19.00 |
| 500 | $0.16 | $80.00 |
| 1,000 | $0.13 | $130.00 |
PESD3V3S5U Overview
An ESD protection array is a multi-channel transient voltage suppressor (TVS) that shunts electrostatic discharge and cable-induced surge events away from sensitive downstream ICs. Within the circuit-protection hierarchy (ESD protection diode -> TVS diode array -> surge protector -> discrete semiconductor), arrays like the PESD3V3S5UD protect several signal lines at once, saving board area compared with multiple discrete SOD-882 or SOD-523 devices.
Key features include the fivefold channel density in a single 2.9 x 1.3 mm footprint, a 3.3 V reverse standoff that suits 3.3 V logic rails, an ultra-low clamping voltage of 12 V at the rated 20 A Ipp current, and unidirectional polarity that also clamps negative ESD strikes to a forward-diode drop of approximately 0.7 V.
Architecturally, the device integrates five avalanche diodes sharing a common GND connection (pin 2), so each protected line sees a low-inductance path to ground. According to the Nexperia PESD3V3S5UD datasheet, the device meets system-level ESD robustness targets such as IEC 61000-4-2, making it a workhorse for external connector protection.
Typical applications include protection of five-channel data or control lines: USB-style ports, keypad and button matrices, I2C/SPI/UART buses, and antenna or audio line protection in portable and consumer electronics.
Design consideration: place the array as the first component after the connector with a short, low-impedance ground return to pin 2; excessive ground inductance raises the effective clamping voltage during fast ESD events.
This page synthesizes distributor pricing (as of 2026-09-11), drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PESD3V3S5U β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PESD3V3S5UD,115
β Drop-Inπ Reference alternative (not in catalog)
PESD3V3S5UD,125
β Drop-Inπ Reference alternative (not in catalog)
PESD5V0S5UD
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PESD3V3S5U Specifications
| Configuration | 5-channel array |
| Direction | Unidirectional |
| Reverse Standoff Voltage (VRWM) | 3.3 V |
| Breakdown Voltage (VBR) | 5.2 V to 6 V |
| Clamping Voltage (VCL) | 12 V at 20 A (8/20 us) |
| Peak Pulse Power (PPP) | 200 W |
| Peak Pulse Current (IPP) | 20 A (8/20 us) |
| Polarity | Unidirectional (common anode / GND) |
| Package | SOT-457 (SC-74 / TSOP-6) |
| Pin Count | 6 |
| Mounting Type | Surface Mount (SMD) |
| Number of Protected Lines | 5 |
| ESD Robustness | IEC 61000-4-2 system-level targets per Nexperia datasheet |
| RoHS Status | Compliant (per LCSC listing, ROHS) |
| Packaging | Tape & Reel (ordering codes ,115 and ,125) |
PESD3V3S5U Pin Configuration
| Pin 1 | I/O1 β Protected line 1 (cathode side, connect to signal line) |
| Pin 2 | GND β Common anode / ground reference for all five diodes |
| Pin 3 | I/O2 β Protected line 2 (connect to signal line) |
| Pin 4 | I/O3 β Protected line 3 (connect to signal line) |
| Pin 5 | I/O4 β Protected line 4 (connect to signal line) |
| Pin 6 | I/O5 β Protected line 5 (connect to signal line) |
Typical Applications
PESD3V3S5U is suitable for 6 applications: USB Port Protection, Keypad and Button Matrices, I2C, SPI and UART Bus Protection, Portable and Wearable Consumer Electronics, Industrial Control I/O, Audio Line and Antenna Feed Protection.
USB Port Protection
The PESD3V3S5UD protects five-channel USB-style interfaces (VBUS sense, D+, D-, and control lines) in one SOT-457 footprint. Its 3.3 V reverse standoff is transparent to USB signaling, and its 12 V clamp at 20 A keeps strike energy well below the tolerance of USB transceivers. The fivefold integration replaces five discrete SOD-882 diodes, cutting placement cost and board area by roughly 60%. Place the array within 5 mm of the connector with a direct ground via at pin 2; a long ground return raises effective clamping voltage during sub-nanosecond ESD edges and can defeat the protection margin.
Recommended
Keypad and Button Matrices
User-accessible keys and membrane switches are prime ESD entry points because fingers discharge directly onto them. The PESD3V3S5UD guards five switch lines per package with a 3.3 V standoff matching MCU GPIO rails; negative strikes are clamped by the forward-biased diode to about 0.7 V. Its 200 W / 20 A surge rating comfortably handles human-body-model level events arriving through the switch wiring. Because keypad scans are low speed, junction capacitance is non-critical here, making the array a zero-compromise choice for matrix rows and columns on 3.3 V MCUs.
Recommended
I2C, SPI and UART Bus Protection
Field-wired serial buses such as I2C, SPI, and UART exposed on service connectors accumulate ESD during board handling and cable hot-plug. The PESD3V3S5UD protects five bus lines (SDA, SCL, and three chip-selects or control signals) at 3.3 V logic levels with a 12 V / 20 A clamp. Designers should verify the datasheet junction capacitance against bus rise-time budgets - for I2C at 100-400 kHz this is negligible, but for fast SPI above 20 MHz it must be checked. Short stub routing from bus to array preserves signal integrity while the low-inductance GND pin shunts strikes safely.
Recommended
Portable and Wearable Consumer Electronics
Smartphones, wearables, and accessories concentrate many externally reachable lines - buttons, docking contacts, accessory connectors - into a tiny PCB area. The PESD3V3S5UD addresses this with five protected lines in a 2.9 x 1.3 mm SOT-457 body, the highest line density of the Nexperia fivefold family at 3.3 V. Its unidirectional topology also handles negative ESD through forward conduction. As of 2026-09-11, LCSC lists the ,125 reel from $0.1881, making per-line protection cost roughly four cents across a five-line port - attractive for high-volume consumer BOMs.
Recommended
Industrial Control I/O
Industrial control panels expose digital inputs and communication lines to harsher coupling than consumer products - cable runs act as antennas for both ESD and induced surge. The PESD3V3S5UD fivefold array gives panel designers a compact first-stage clamp for 3.3 V and 5 V signal lines, with 200 W peak pulse absorption per the 8/20 us rating. For heavier surge environments it can be paired with a downstream TVS such as an SMBJ series device for staged protection. Verify the IEC 61000-4-2 test level achieved in system tests against the end-application standard before release.
Recommended
Audio Line and Antenna Feed Protection
Headphone jacks and short antenna feeds are frequent ESD victims because users touch them directly. The PESD3V3S5UD shields five lines - typical stereo L/R, mic, detect, and bias - at 3.3 V with minimal added loading; its unidirectional clamp also absorbs negative strikes at the forward diode drop. For analog audio, junction capacitance can slightly attenuate high frequencies, so confirm the datasheet capacitance figure against the source impedance; for antenna feeds, place the array after any DC-block and verify insertion loss. The single SOT-457 footprint is far denser than five discrete ESD diodes in these space-limited ports.
Recommended
Recommended Products Summary
Engineering reference data for PESD3V3S5U β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PESD3V3S5UD,115 | PESD3V3S5UD,125 | PESD5V0S5UD |
|---|---|---|---|---|
| Package | SOT-457 (SC-74 / TSOP-6) | SOT-457 (SC-74) - same | SOT-457 (SC-74) - same | SOT-457 (SC-74) - same |
| Brand | Nexperia | Nexperia | Nexperia | Nexperia |
| Number of Protected Lines | 5 | 5 | 5 | 5 |
| Reverse Standoff Voltage | 3.3 V | 3.3 V | 3.3 V | 5.0 V |
| Direction | Unidirectional | Unidirectional | Unidirectional | Unidirectional |
| Packaging / Ordering Code | PESD3V3S5U family (orderable as ,115 or ,125) | Tape & Reel, standard | Tape & Reel, high volume (LCSC in stock) | Tape & Reel |
Key Differentiators
- Highest line density in family at 3.3 V (vs PESD5V0S5UD)
- Fivefold integration vs single-line diodes (vs ESD9B3.3ST5G)
- Trade-off: capacitance vs integration (vs PESD5V0S5UD)
Design Notes
Place the PESD3V3S5UD as the first component after the connector and route each protected trace to the array before any series element. Pin 2 (common GND) must tie to ground through a direct, short via to the ground plane - a shared thin trace adds inductance that elevates the effective clamp during fast ESD edges. Estimated: at 20 A peak with just 5 nH of ground inductance, L*di/dt for a 1 ns edge adds roughly 100 V of transient overshoot, defeating the 12 V clamp. Keep all five I/O stubs under 5 mm.
Verify the reverse standoff matches the rail: on a 3.3 V line the PESD3V3S5UD (VRWM = 3.3 V) is correct, but on a 5 V-tolerant line the diode would conduct leakage or partially clamp normal signals. Also confirm junction capacitance against high-speed buses (fast SPI, USB high speed) before committing the layout. When substituting, do not swap in PESD5V0S5UD on 3.3 V lines - its 5 V standoff delays clamping and may exceed the protected IC's absolute maximum pin rating.
The 200 W peak pulse power rating applies to the 8/20 us waveform only; repetitive strikes or longer surge waveforms derate it substantially. Estimated: for repetitive ESD events, respect the average power limit implied by the package thermal resistance - keep repetitive transient energy low enough that junction temperature stays within the datasheet maximum. For staged protection against long surges (10/1000 us), add a downstream higher-energy TVS such as an SMBJ6.0A so the array handles only the fast leading edge.
Compliance Information
RoHS compliance explicitly flagged on LCSC listing for PESD3V3S5UD,125. REACH, halogen-free, and conflict-minerals declarations not present in the provided web data - confirm on the Nexperia compliance portal.
