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Power Integrations CAP012DG-TL
- Part No.:
- CAP012DG-TL
- Manufacturer:
- Power Integrations
- Category:
- Specialized ICs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Description:
- IC CAPACITOR DISCHARGE 8SO
- Quantity:
Unit Price:$0
Ext Price:$0
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Product Details
CAP012DG-TL - CAPZero Automatic X-Capacitor Discharge IC
Power Integrations CAP012DG-TL is a 1000 V CAPZero device for automatic discharge of an AC-input X capacitor through external resistors after mains removal. The D package is an SO-8, and -TL denotes tape-and-reel ordering.
Technical values follow the Power Integrations CAPZero family data sheet, Rev. H (March 2018). Validate the current controlled revision and end-product safety requirements.
Overview
CAP012DG-TL is a two-terminal CAPZero family device. With AC connected, it interrupts the continuous X-capacitor discharge-resistor current. When AC is removed, it reconnects the external resistor path. The X capacitor, R1 and R2, MOV location and surge requirements are part of the complete design.
Key Advantages
Low standby dissipation
The family data sheet specifies less than 5 mW consumption at 230 VAC in its intended circuit.
Automatic discharge
AC removal reconnects the external X-capacitor discharge path without firmware.
Self-supplied
No separate bias supply or ground connection is required.
Line-side layout
The prescribed SO-8 pin arrangement supports more than 4 mm creepage and clearance across package and PCB.
Feature Summary
1000 V grade
CAP012 belongs to the 1000 V D1-to-D2 voltage grade; confirm surge margin in the actual circuit.
External resistance
Table 1 selects 1.5 MΩ nominal total R1 + R2 for the CAP012 X-capacitance row.
Two-terminal operation
Duplicated D1 and D2 pins provide the only electrical IC connections.
EMI-filter flexibility
The discharge path is disconnected during AC operation to reduce standing resistor loss.
Package & Footprint
The manufacturer's D code is plastic SO-8, matching the LCDChip registry's 8-SOIC entry. The drawing gives a 3.90 mm nominal body width and 1.27 mm lead pitch. G denotes the green material option; -TL denotes tape and reel.
- Confirm pin-1 orientation and the manufacturer land pattern.
- Preserve the specified creepage and clearance.
- Rate external resistors for normal and fault conditions.
This generic package image is not a controlled mechanical drawing.
Pin Functions
Pins 2 and 3: D1
First terminal of the internal switching path.
Pins 6 and 7: D2
Second terminal of the internal switching path.
Pins 1, 4, 5 and 8: NC
Shown as NC in the manufacturer pin drawing. Follow its same-side pad-coupling and layout guidance.
Only pins 2, 3, 6 and 7 are electrically connected to the IC.
Key Specifications
| Function | Automatic X-capacitor discharge control |
|---|---|
| Voltage grade | 1000 V D1-to-D2 breakdown-voltage grade |
| Selection-row X capacitance | Up to 500 nF total |
| Nominal total R1 + R2 | 1.5 MΩ |
| Nominal RC target | Less than 1 s with stated component tolerances |
| AC-removal detection | 22 ms typical; 31.4 ms maximum at 47–63 Hz |
| CAP012 drain saturation current | 0.25 mA per family electrical table |
| Absolute-maximum peak drain current | 0.553 mA under the stated voltage condition |
| Operating ambient | -10 °C to +105 °C |
| External bias | Not required |
| Package | SO-8 / 8-SOIC, D code |
| Order suffixes | G green material; -TL tape and reel |
Absolute-maximum ratings are not operating targets. Verify electrical-table test conditions and tolerances in the data sheet.
Replacement Considerations
CAP002DG is the manufacturer's 825 V counterpart in the same 500 nF / 1.5 MΩ selection row. This does not establish a drop-in replacement: compare surge margin, MOV placement, ordering code, land pattern and safety evidence before substitution. No internal alternative link is provided without a verified destination product page.
Manufacturer Information
Power Integrations documents CAP012 and its ordering-code structure in the CAPZero family data sheet, Rev. H. Obtain current manufacturer-controlled lifecycle and qualification information before production use.
Applications
AC/DC converter inputs
X-capacitor discharge networks in line-operated supplies.
Low-no-load adapters
Input filtering where permanent bleed-resistor loss matters.
Appliance power supplies
Line-side EMI filtering subject to system safety assessment.
EMI-filter designs
X-capacitor selection with an automatically controlled discharge path.
Quality & Authenticity
Verify device marking, package geometry and lot traceability against current manufacturer documentation. Check insulation spacing, resistor ratings and end-product safety tests separately; a generic package image does not certify a physical lot.
FAQ
Does CAP012DG-TL need a bias supply?
No separate low-voltage supply is required in the manufacturer's two-terminal circuit.
Does it replace the discharge resistors?
No. External R1 and R2 remain necessary.
What does the 1000 V grade describe?
The D1-to-D2 voltage grade; final surge testing and MOV placement still govern suitability.
Is CAP002DG a direct substitute?
No. It is an 825 V selection-row counterpart and requires an independent circuit and safety review.
Engineering Notice
AC-line circuitry carries hazardous voltages. Qualified engineers must validate X-capacitor class, resistor fault and voltage ratings, creepage, clearance, MOV location, surge waveforms and discharge time against applicable end-product standards. Component data is not blanket safety approval.
CAP012DG-TL Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Power Integrations
- Series:
- CAPZero™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Capacitor Discharge
- Applications:
- Converter, ACDC
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
- Grade:
- -
- Qualification:
- -
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