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CAP014DG-TL - 1000V X Capacitor Discharge IC | Power Integrations
The Power Integrations CAP014DG-TL is an automatic X capacitor discharge IC rated for 1000V operation supporting up to 1000 nF X capacitor capacitance, housed in an 8-pin SOIC package. It belongs to Power Integrations' CAPZero family of zero-loss automatic X capacitor discharge ICs designed for AC-DC converters. What is an X capacitor discharge IC? An X capacitor (across-the-line safety capacitor) requires a discharge path when AC mains is removed to meet safety standards such as IEC 62368-1. Traditional discharge resistors waste several milliwatts continuously, reducing standby efficiency. An X capacitor discharge IC replaces these resistors with a smart switch that blocks current during normal operation and engages discharge resistors when AC is disconnected - eliminating standby loss while maintaining safety compliance. Key features include 1000V peak voltage rating, support for up to 1000 nF X capacitors, ultra-low standby power of less than 5 mW at 230 VAC, automatic discharge activation when AC is removed, and compatibility with converter/ACDC applications across the 80 VAC to 265 VAC universal input range. The 8-SOIC package enables easy integration into existing flyback, buck, or other AC-DC converter layouts with minimal PCB area. The CAP014DG-TL uses two back-to-back high-voltage MOSFETs with intelligent sensing to detect AC presence. When AC voltage is applied, the internal switches are off and no current flows through the discharge resistors. When AC is removed, the IC detects the absence and closes the switches, allowing the discharge resistors to safely bleed the X capacitor voltage below the 34V safety threshold within one second as required by safety standards. Typical applications include adapters and chargers for consumer electronics, smart home and IoT devices, standby power supplies in white goods, ultra-low standby power AC-DC converters, and USB-PD power adapters. The device is particularly valuable in designs targeting Energy Star and EU Ecodesign standby limits below 500 mW. When designing with this device, pair the CAP014DG-TL with a matched X capacitor whose value does not exceed 1000 nF. Ensure trace spacing on the high-voltage pins complies with IEC 62368-1 creepage and clearance requirements. Confirm that the total discharge time meets the safety standard in your target region. This page synthesizes distributor pricing, drop-in CAPZero alternatives, design guidance, and IEC safety cross-references not consolidated in the manufacturer datasheet, supporting faster component selection for low-standby AC-DC designs.
MCZ33903BD3EK - SBC CAN HS 3.3V 32-SOIC EP | NXP
The NXP MCZ33903BD3EK is a second-generation System Basis Chip (SBC Gen2) integrating a high-speed CAN transceiver, a LIN transceiver, and a 3.3 V logic supply in a 32-pin SSOP-EP (exposed pad) package, designed for automotive body and chassis ECUs. It operates from a 5.5 V to 28 V supply rail, supports CAN Normal/Sleep modes, and provides a regulated 3.3 V output for microcontroller power, simplifying BOM and PCB area for nodes that previously needed discrete transceivers plus a separate LDO. A System Basis Chip is a multi-function analog/digital mixed-signal IC that consolidates the power, communication, and housekeeping blocks of a distributed automotive ECU onto one die. In the broader taxonomy, the SBC sits between discrete CAN/LIN transceivers (one function per chip) and full automotive microcontrollers (which now increasingly integrate the SBC inside the MCU package). The 33903 family is NXP's second-generation SBC, succeeding the 33390 series, and adds enhanced low-power Sleep mode current, watchdog, and SPI-configurable features. Key features include a high-speed CAN physical layer compliant with ISO 11898, a LIN 2.x physical layer, a 3.3 V / ~100 mA auxiliary regulator for the host MCU, an SPI interface for control and diagnostics, and low Sleep-mode quiescent current optimized for always-on automotive networks. The exposed thermal pad on the 32-SSOP-EP package reduces junction-to-ambient thermal resistance and improves dissipation when the SBC delivers continuous current to its MCU load. The device uses NXP's SMARTMOS technology, mixing high-voltage analog power stages with CMOS digital logic. CAN HS supports up to 1 Mbit/s bus speed, dominant output driver with slope control, and bus-fault diagnostics; the LIN block supports 20 kbit/s master/slave with integrated pull-up. Both bus pins survive automotive transient events typical of 12 V body and 24 V truck systems. Typical applications include automotive body controllers, HVAC control modules, seat and mirror controllers, lighting ECUs, door modules, and CAN/LIN gateway nodes where one chip replaces a discrete CAN + LIN + 3.3 V LDO stack. The wide 5.5 V to 28 V input range covers both 12 V passenger and 24 V commercial vehicle battery systems. When designing with this SBC, ensure the exposed pad is soldered to a sufficiently large copper pour (>=1 sq. in.) to keep junction temperature within SOA during 3.3 V regulator full load. Add bulk capacitance at VCC and a 100 nF decoupling capacitor close to each supply pin to meet automotive EMC and ESD requirements per ISO 7637. This page compiles datasheet-grade specifications, distributor stock, drop-in pin-compatible alternatives (same 32-SSOP-EP footprint), and design-embedded guidance not duplicated on NXP's product brief, saving engineering time during component selection.