Philips PESDxU1UT series Ultra low capacitance ESD protection diode in SOT23 package
Summary
Product datasheet for Philips PESDxU1UT series ultra-low capacitance ESD protection diodes in SOT23 package. Available in 3.3V, 5.0V, 12V, 15V, and 24V stand-off voltage variants. Features unidirectional protection of one high-speed data line, ESD protection exceeding 23 kV per IEC 61000-4-2 Level 4, surge capability up to 200W peak pulse power per IEC 61000-4-5. Ultra-low diode capacitance of 0.6 pF typical. Applications include 10/100/1000 Ethernet, FireWire, communication systems, and high-speed data lines.
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PESDx U1UT series Ultra low capacitance ESD protection diode in SOT23 package Rev. 01 — 11 May 2005 Product data sheet
1. Product profile
1.1 General description Ultra low capacitance Electro Static Discharge (ESD) protection diode in a SOT23 (TO-236AB) small SMD plastic package designed to protect one high-speed data line from the damage caused by ESD and other transients.
1.2 Features Unidirectional ESD protection of one line ESD protection > 23 k V Ultra low diode capacitance: Cd = 0.6 p F IEC 61000-4-2; level 4 (ESD) Max. peak pulse power: PPP up to 200 IEC 61000-4-5; (surge) Low clamping voltage
1.3 Applications 10/100/1000 Ethernet Local Area Network (LAN) equipment Fire Wire Computers and peripherals Communication systems High-speed datalines
1.4 Quick reference data Table 1: Quick reference data Symbol Parameter Conditions Min Typ Max Unit
VRWM reverse stand-off voltage PESD3V3U1UT 3.3 PESD5V0U1UT 5.0 PESD12VU1UT PESD15VU1UT PESD24VU1UT
Cd diode capacitance f = 1 MHz; VR 0.6 1.5 p F
[1] Measured from pin 1 to 2
Page Summary Contents For Philips PESDxU1UT series Ultra low capacitance ESD protection diode in SOT23 package
Manual Details
| Brand | Philips |
|---|---|
| Pages | 13 |
| File Size | 89.09 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What kind of systems is this diode suitable for?
It is designed for applications like Ethernet, Local Area Networks (LAN), FireWire, and general high-speed datalines.
What are the maximum ESD ratings for this component?
For PESD12VU1UT, the electrostatic discharge voltage can be up to 30 kV and the max peak pulse power is 200 W.
In what physical package is it supplied?
The diode comes in a SOT23 small SMD plastic surface mounted package with three leads.
Is there a minimum capacitance value?
No, the typical diagonal diode capacitance (CdR) values are listed, which typically range from 1.5 pF at 1 MHz for this series.