The PESD1CAN from Nexperia is a CAN bus ESD protection diode in SOT-23 that protects two automotive CAN bus lines up to 23kV ESD with low clamping voltage and ultra-low leakage.<\/p>\n
| \u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/td>\n | CAN Bus ESD Protection Diode<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| \u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n | 2 (protects 2 CAN lines)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| Reverse Standoff Voltage (VRWM)<\/td>\n | 24V<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| Breakdown Voltage (VBR)<\/td>\n | 25.4V ~ 30.3V @ 5mA<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| Clamping Voltage (VCL)<\/td>\n | 40V @ IPP=1A; 70V @ IPP=3A<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| ESD Protection<\/td>\n | Up to 23kV (IEC 61000-4-2 contact)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| Peak Pulse Current (IPP)<\/td>\n | 3A @ 8\/20us<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| Peak Pulse Power (PPP)<\/td>\n | 200W @ 8\/20us<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| Leakage Current (IRM)<\/td>\n | <1nA (typ) \/ 50nA (max)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| Diode Capacitance (Cd)<\/td>\n | 11pF (typ) @ 1MHz<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| Capacitance Matching<\/td>\n | 0.1% (typ)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| \u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n | SOT-23 (TO-236AB)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||
| \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n | -65 to +150 C<\/td>\n<\/tr>\n<\/table>\n\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\nProduct Overview The PESD1CAN from Nexperia is a CAN bus ESD protection diode in SOT-23 that protects two automotive CAN bus lines up to 23kV ESD with low clamping voltage and ultra-low leakage. Key Specifications Function CAN Bus ESD Protection Diode Channels 2 (protects 2 CAN lines) Reverse Standoff Voltage (VRWM) 24V Breakdown Voltage (VBR) […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[57,13],"tags":[],"chip_brand":[140],"class_list":["post-3807","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","chip_brand-nexperia"],"acf":{"brief_explanation":"Dual CAN bus ESD protection diode, 24V standoff, 23kV ESD, SOT-23","date_code":"","package_case":"SOT-23 (TO-236AB, 2.9 x 1.3 x 1.0 mm, 3 leads)","in_stock":11311,"datasheet":"https:\/\/assets.nexperia.com\/documents\/data-sheet\/PESD1CAN.pdf","price":"$0.095 @ 3ku","product_introduction":"The PESD1CAN from Nexperia is a dedicated ESD protection diode array designed specifically for protecting two Controller Area Network (CAN) bus lines from electrostatic discharge and other transient voltage events in automotive and industrial applications. The device integrates two steering diodes in a single SOT-23 package, with both cathodes connected to a common ground pin (pin 3), providing a compact and cost-effective solution for bidirectional CAN bus protection. The 24V reverse standoff voltage is compatible with both 5V and 12V CAN bus systems, while the 25.4-30.3V breakdown voltage ensures the protection device does not conduct during normal CAN bus operation (which uses 2.5V typical common-mode voltage with 1V differential). The ultra-low leakage current of less than 1nA typical ensures the protection device does not load the CAN bus or affect the transceiver's recessive bus state. The 0.1% typical capacitance matching between the two diodes is critical for maintaining the symmetry and signal integrity of the differential CAN bus, preventing common-mode to differential-mode conversion that would degrade EMC performance. The device provides ESD protection up to 23kV per IEC 61000-4-2 (contact discharge), far exceeding the 8kV Level 4 requirement, making it suitable for harsh automotive environments.","working_principle":"The PESD1CAN operates as a bidirectional transient voltage suppression device for CAN bus lines. Key subsystems include: (1) Steering Diode Pair - two identical steering diodes are connected between each CAN line (CANH and CANL) and a common ground; the diodes are normally reverse-biased at the CAN bus common-mode voltage (typically 2.5V), well below the 24V standoff voltage; when a positive transient exceeds the breakdown voltage (25.4V min), the diode avalanches and clamps the voltage; when a negative transient pulls the line below -0.6V, the diode forward-biases and clamps; (2) ESD Clamping - during an ESD event, the fast-rising transient (0.7-1ns rise time) is clamped by the diode's avalanche mechanism; the clamping voltage at 1A (40V) is well below the CAN transceiver's maximum rating (typically -27V to +40V), protecting the transceiver; at higher currents (3A surge), the clamping voltage rises to 70V; (3) Capacitance Matching - the 0.1% typical capacitance matching between the two diodes ensures that CANH and CANL see identical capacitive loading, which is critical for the differential signaling scheme; any mismatch would convert common-mode noise to differential noise, degrading the CAN bus signal-to-noise ratio; the 11pF typical capacitance per diode is low enough to not significantly load the CAN bus at the 1Mbps maximum CAN data rate.","pin_description":"
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