CeraDiode General Presentation Definition 1. The CeraDiode is a - PowerPoint PPT Presentation

CeraDiode General Presentation

Definition 1. The CeraDiode is a ceramic component for the ESD protection of data-, audio- and video lines, ICs and I/O ports in electronic devices. 2. The CeraDiode is a (cost effective) alternative to semiconductor protection devices such as Zener and TVS diodes. 3. In many cases, the CeraDiode is a 1:1 replacement for these diodes (F.F.F. fit form function). 4. The CeraDiode offers several technical advantages. KB VS PM, 2007 CeraDiode 2

Benefits for customer applications CeraDiode offers several features and advantages: 1) Bi-directional protection in a single component 2) High ESD stability to IEC 61000-4-2 3) No change in ESD protection performance at temperatures > 25 ° C 4) Use of parasitic capacitance for RFI suppression and HF filtering (replacement of additional MLCC) 5) Low leakage current 6) Fast response time < 0.5 ns 7) Ruggedness against surge currents KB VS PM, 2007 CeraDiode 3

Construction of a CeraDiode Outer electrode Inner electrode Active zone Isolation zone MATERIALS Ceramic layers: Metal-oxide ceramic Inner electrodes: Silver-palladium Outer electrodes: Nickel barrier (Ag / Ni / Sn) KB VS PM, 2007 CeraDiode 4

IEC 61000-4-2 International ESD Standard ESD discharge generator ESD discharge current (Human Body Model) ESD discharge levels IEC 61000-4-2 Test voltage Test voltage test level (contact discharge) (air discharge) 1 2 kV 2 kV 2 4 kV 4 kV 3 6 kV 8 kV 4 8 kV 15 kV KB VS PM, 2007 CeraDiode 5

Comparison Semiconductor diode – CeraDiode Characteristic curves I I Forward Semiconductor CeraDiode current diode Forward working I range PP I F Forward direction I I BR V clamp V V V V CL V V V V I leak BR DC leak BR RM I I V leak V V V Reverse V F Forward leak RM DC BR clamp voltage voltage I I R BR Reverse direction I I I PP PP Reverse working range Reverse current MLV0134-B MLV0133-A uni-directional bi-directional KB VS PM, 2007 CeraDiode 6

Comparison Semiconductor diode – CeraDiode Characteristic curves: Glossary Semiconductor diode CeraDiode V RM , V RWM , V WM , V DC V DC (Reverse) stand-off voltage, working voltage, operating voltage I RM , I RM,max , I RM,max @ V RM - (Reverse) current @ maximum reverse stand-off voltage, working voltage, operating voltage (Reverse) leakage current I RM I leak (Reverse) voltage @ leakage current V RM , V RWM , V WM , V DC V leak (Reverse) breakdown voltage V BR V BR (Reverse) current @ breakdown I R , I T I BR voltage Clamping voltage V cl , V C V clamp Current @ clamping voltage I PP I PP Peak pulse power P PP P PP Peak pulse current I P , I PP I PP Forward voltage V F - Current @ forward voltage I F - KB VS PM, 2007 CeraDiode 7

Comparison Semiconductor diode - CeraDiode CeraDiodes show no change in ESD protection performance at temperature > 25 ° C Millions of pn junctions: One pn junction: Energy absorption over the Energy absorption only entire volume of the component. in this small area. No change in ESD protection ESD protection performance starts performance at temperatures > 25 ° C. to decline at 25 ° C. MLV0016-T MLV0135-C-E 110 % 90 80 ESD protection with CeraDiodes can CeraDiode Permissible percentage of max. ratings 70 dispense with a series resistance for 60 limiting the current! 50 Semiconductor diode 40 30 20 10 0 0 20 40 60 80 100 120 140 150 ˚ C T A KB VS PM, 2007 CeraDiode 8

Advantages of CeraDiode Use of parasitic capacitance for RFI suppression and HF filtering (replacement of additional capacitor, MLCC) R� C D iode� � CeraDiode� MLV0147-S-� E� resistor + capacitor CeraDiode + semiconductor diodes Space and cost saving effects KB VS PM, 2007 CeraDiode 9

Interfaces ESD protected by CeraDiode Audio Serial/Parallel ISDN/� PS/2 Push button xDSL modem ANALOG AUDIO OUTPUT AUDIO IN DIGITAL� ON / OFF 2 CH 5.1 CH sourround AUDIO L MOUSE Front Sourround Center OUT IN L KEYBOARD R R MLV0136-F Coaxial Subwoofer Video HDMI/DVI USB/� Ethernet� Memory card IEEE 1394 LAN Scart VGA Y S-VIDEO VIDEO VIDEO COMPONENT IN Pr Pb Y MLV0137-G KB VS PM, 2007 CeraDiode 10

Product range CeraDiode Device Package Lines to CeraDiode CeraDiode Semi-diode V DC C typ case size semi-diode protect photo schematic photo [V] [pF] 5.6 0.6 0402 SOD723 0603 single SOD532 1 to to 1003 SOD323 30 470 MLV0016-T 16 3 0508 array - 4 to to 0612 22 56 MLV0018-V up to 4 data 1012 array SOT23-6L 5.6 7 + MLV0020-X 1 supply KB VS PM, 2007 CeraDiode 11

Application matrix Component, S-Video, VGA) Keyboard, Pushbuttons, Analog modem / ISDN (Firewire, DV, i.Link) (Scart, Composite, xDSL modem Video analog Audio analog Memory card Audio digital Parallel port IEEE 1394 Serial port SIM card Ethernet SATA HDMI PS/2 LCD USB DVI Case size EPCOS Semi-diode Devices type code package x 1) x 1) 0402 CDS2C05GTA SOD-723 x x x x x 1) x 2) x 1) 0402 CDS2C15GTA SOD-723 x x x x x 1) x 1) 0603 CDS3C05GTA SOD-523 x x x x Single x 1) x 1) 0603 CDS3C09GTA SOD-523 x x x x standard x 1) x 2) x 2) x 1) 0603 CDS3C15GTA SOD-523 x x x x x 1) x 1) x 1) 0603 CDS3C20GTA SOD-523 x x x x x 1) x 1) 1003 CDS4C12GTA SOD-323 x x x x x 1) x 3) x 1) x 1) Array 0508 CDA4C20GTA - x x x x x x 1) x 3) x 1) x 1) standard 0612 CDA5C20GTA - x x x x x 0402 CDS2C05HDMI1 SOD-723 x x x x x x 1) 0402 CDS2C15GTH SOD-723 x x x x x x x x Single 0402 CDS2C16GTH SOD-723 x x x x x x x x x x x high-speed 0603 CDS3C16GTH SOD-523 x x x x x x x x x x x x 1) x 1) 0603 CDS3C30GTH SOD-523 x x x x x x x 1003 CDS4C16GTH SOD-323 x x x x x x x x x x x x 1) x 1) 0508 CDA4C16GTH - x x x x x x x x Array 0612 CDA5C16GTH - x x x x x x x x x x x high-speed 1012 CDA6C05GTH SOT-23 6L x x x x x x x x x x 1) Small data rates only 2) Power line 3) USB 1.1 only Customer has to test and approve parts for the application. KB VS PM, 2007 CeraDiode 12