NXP NFC antenna protection diodes PESD18VF1Bx and PESD24VF1Bx High-performance, small form-factor devices protect the NFC antenna The best ESD protection for NFC systems - from the global leader in ESD protection and Near-Field Communication (NFC). Features `` Bidirectional configuration, allowing operating voltages up to 18 V and 24 V `` Very low capacitance, enabling easy design of the antenna matching circuit `` Very small voltage dependency of the diode capacitance, avoiding intermodulation distortion `` Small form-factor packages of 1006 (0402 inch) and 0603 (0201 inch) standard size General description NFC is the breakthrough technology that allows tags in posters, check-in signs, and contactless payment terminals to interact with mobile phones. The NFC antenna is often integrated into the battery cover or the battery itself and is connected to the NFC ICs via small contacts on the phone – an entry point for ESD strikes which are potentially hazardous to the NFC IC. These new NXP devices are optimized for the requirements of the NFC system and ensure the best-possible protection of the NFC IC. VRWM (V) Cline typ (pF) Cline max (pF) ESD rating max (kV) Configuration Package Size (mm) PESD18VF1BL PESD18VF1BSF* PESD24VF1BL PESD24VF1BSF* * in development Protected lines Type number Selection guide 1 1 1 1 18 18 24 24 0.35 0.3 0.35 0.3 0.5 0.45 0.5 0.45 10 10 10 10 Bidirectional Bidirectional Bidirectional Bidirectional DFN1006-2 DSN0603-2 DFN1006-2 DSN0603-2 1 x 0.6 x 0.48 0.6 x 0.3 x 0.3 1 x 0.6 x 0.48 0.6 x 0.3 x 0.3 The highly linear diode capacitance, with very small variation, Using tiny packages makes PCB design more flexible. minimizes signal degradation. 0.6 filter circuit matching circuit antenna terminal + ESD protection antenna coil 0.5 Diode capacitance (pF) NFC controller 0.4 0.3 0.2 0.1 0 -20 Circuit diagram -15 -10 -5 0 5 10 15 20 DC bias voltage (V) Diode capacitance versus bias voltage diagram DFN1006 and DSN0603 packages These small packages are ideally suited for use in slim, compact mobile devices. DFN1006-2 Outline DSN0603-2 Outline 0.15 0.13 1 2 0.25 0.23 0.4 0.625 0.575 0.325 0.275 0.32 0.28 0.0076 (2) Note 1. Dimension A is including coating foil thickness. 2. The marking bar indicates the cathode. More information about NXP antenna protection www.nxp.com/products/esd_emi_and_signal_conditioning/application_specific_esd_and_esd_emi_solutions/nfc_antenna_protection/ www.nxp.com © 2014 NXP Semiconductors N.V. All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The Date of release: January 2014 information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and Document order number: 9397 750 17519 may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof Printed in the Netherlands does not convey nor imply any license under patent- or other industrial or intellectual property rights.