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CAP016DG-TL is a Power Integrations CAPZero automatic X-capacitor discharge IC for AC-input equipment. The CAP016 selection is the 1000-V grade for up to 2 microfarads of total X capacitance with the specified external discharge-resistor network. DG identifies the green SO-8 package; TL identifies tape-and-reel delivery.
Mains-connected designs require a complete safety, surge and discharge-time review; this summary is not a substitute for the manufacturer's application circuit.
When AC input is present, CAPZero blocks current through the X-capacitor safety-discharge resistors to reduce standby loss. When AC is removed, the device reconnects the resistor path so the X capacitor discharges. The two-terminal function is self-supplied and does not require a separate bias rail or ground connection.
Disconnects the discharge resistors during normal AC operation to avoid continuous resistive loss.
Restores the resistor path after input removal to discharge the X capacitor.
Requires no separate control input or external bias supply.
Supports larger X capacitors while maintaining a controlled discharge network.
1000-V breakdown grade with a manufacturer table entry for 2-microfarad maximum total X capacitance.
The selection table specifies 360 kilohms nominal total series resistance for CAP016.
The SO-8 pin arrangement maintains more than 4 mm creepage across the package and PCB when laid out as specified.
Can be applied before or after the system input fuse, subject to the manufacturer's safety guidance.
The manufacturer's D package is plastic SO-8, and G denotes a halogen-free, RoHS-compliant material option. TL specifies tape and reel. LCDChip registers 8-SOIC (0.154", 3.90 mm width), consistent with the manufacturer's 3.90-mm body drawing.

This generic JPG does not show CAPZero pin connections.
The data sheet identifies D1 on pins 2 and 3 and D2 on pins 6 and 7; pins 1, 4, 5 and 8 are NC in the package diagram. The manufacturer recommends grouping pins 1-4 and pins 5-8 on the PCB to support the specified creepage arrangement. Follow the controlled application layout rather than treating the generic package JPG as a pin diagram.
| Product family | CAPZero automatic X-capacitor discharge IC |
|---|---|
| Manufacturer | Power Integrations |
| Exact order code | CAP016DG-TL |
| Breakdown grade | 1000 V |
| Maximum total X capacitance | 2 microfarads, per selection table |
| Nominal total series resistance | 360 kilohms, R1 + R2 |
| External bias | Not required; self-supplied |
| Functional terminals | D1 and D2 |
| Package | D plastic SO-8; registry 8-SOIC |
| Package material | G green / halogen-free / RoHS compliant |
| Delivery form | TL tape and reel |
Selection-table resistor values are nominal; use the complete data sheet for tolerances, surge limits and compliance testing.
Another CAPZero order code may differ in breakdown grade, supported X capacitance or nominal resistor value. The CAP006 825-V option is not a drop-in approval for a CAP016 design without reviewing MOV location, surge conditions and the discharge network. Validate the end-product safety test and packaging requirement. No unverified internal alternative link is asserted.
Power Integrations documents CAP016DG in the CAPZero Family data sheet, revision H. Its component-selection table specifies the CAP016 electrical selection, and the part-ordering section defines D, G and TL. The manufacturer also provides application considerations for MOV placement, surge measurement and X-capacitor discharge.
Reduce discharge-resistor loss in input EMI filters.
Support low-standby-power designs with X-capacitor discharge requirements.
Maintain a controlled discharge path without steady resistor loss.
Allow X-capacitor selection within the manufacturer's CAP016 table limits.
Verify the complete CAP016DG-TL order code, reel and lot labels, package marking and traceability. Incoming and end-product tests should confirm the expected circuit behavior, surge withstand and discharge time; exterior marking alone cannot establish mains-safety compliance.
No. CAPZero is self-supplied as a two-terminal functional device.
It identifies tape-and-reel delivery of the SO-8 device.
No. MOV location and measured differential surge determine the required voltage grade.
No. External discharge resistors remain necessary and must be selected using the manufacturer's table.
This device connects to a mains-related safety circuit. Use the current Power Integrations data sheet, package drawing and applicable safety standards for schematic, PCB creepage, fuse/MOV placement, fault analysis, surge testing and discharge-time verification. Only qualified engineers should approve the final implementation.
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