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Power Integrations CAP200DG-TL
CAP200DG-TL Supplier & Distributor
CAP200DG-TL is an electronic component from Power Integrations. TomatoElec is an in-stock independent distributor supporting original component sourcing, inventory checks and BOM purchasing needs.
We support RFQ handling, component availability confirmation and sourcing coordination for OEM, EMS, repair and electronic trading companies.
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- RFQ and availability confirmation
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- Part No.:
- CAP200DG-TL
- Manufacturer:
- Power Integrations
- Category:
- Specialized ICs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CAP200DG-TL.pdf
- Description:
- IC AUTOMATIC DISCHARGE 8-SO
- Quantity:
Unit Price:$0.280000
Ext Price:$0.280000
- Payment:
- Shipping:
Inventory:48,612
Send us your inquiry,we will respond immediately.
Stock:48,612
| Qty. | Unit Price | Ext Price |
| 1+ | $0.400000 | $0.400000 |
| 100+ | $0.329000 | $32.900000 |
| 1000+ | $0.280000 | $280.000000 |
About CAP200DG-TL
Looking for CAP200DG-TL supplier or distributor? Tomato Electronics provides high-quality electronic components including MLCC capacitors, tantalum capacitors, ICs, diodes and more.
Contact us now for quotation and availability of CAP200DG-TL.
Product Details
CAP200DG-TL (CAPZero-2) – Zero-Loss Automatic X-Capacitor Discharge IC
CAP200DG-TL is a two-terminal, self-supplied IC that blocks current through X-capacitor discharge resistors while AC is present, and automatically discharges the X capacitor when AC is removed-helping designers achieve ultra-low standby power without sacrificing EMI performance.
Engineering note: Parameter values and behaviors should be verified against the official datasheet and your final surge / safety tests.
Product Positioning
CAP200DG-TL is positioned for AC-DC converters and appliances that must meet strict standby consumption limits while still using sufficiently large X capacitors for differential-mode EMI filtering. By "disconnecting" the discharge resistor path during normal AC operation, it enables designers to use larger X capacitors (and potentially smaller inductors) without increasing no-load power.
When AC is removed: reconnects resistors → safely discharges the X capacitor automatically.
Technical Introduction
Traditional X-capacitor discharge resistors continuously dissipate power whenever AC is applied. CAP200DG-TL changes that: it blocks resistor current while AC is present, reducing standby loss to a level that is effectively negligible in typical compliance measurements, and then automatically discharges the capacitor once AC is disconnected.
Practical outcome: you can tune EMI performance (often by increasing X-capacitance) without paying for it in standby power.
Product Advantages
Blocks discharge resistor current when AC is present, targeting ultra-low standby power in offline designs.
One part supports X-capacitor values from small (100 nF) to very large (mF range), allowing broad EMI tuning.
Only two terminals (D1/D2). Can be used before or after the input fuse, simplifying safety placement decisions.
High differential surge withstand with internal 1000 V MOSFETs and high common-mode surge immunity without an external ground.
Feature Summary
No external bias supply required, reducing BOM and design complexity.
Package + PCB approach supports creepage/clearance goals and placement in high-voltage input sections.
Enables larger X capacitors (improved DM EMI performance) without increasing no-load consumption.
For demanding surge tests, an optional small HV capacitor between D1/D2 can reduce peak drain voltage.
Package & Footprint Guide
CAP200DG-TL uses an SO-8 (D) package. The pin configuration is designed so the package width supports creepage/clearance of over 4 mm when implemented correctly on the PCB.
(Use your site image / PDF snapshot)
- D1: Pins 2 & 3 (recommended to couple pins 1-4 together on PCB).
- D2: Pins 6 & 7 (recommended to couple pins 5-8 together on PCB).
- Keep creepage/clearance around the HV nodes; follow your safety standard and PCB rules.
Pin Functions (SO-8 D)
Key Specifications
| Breakdown Voltage (BVDSS) | 1000 V |
|---|---|
| Total X Capacitance Supported | 100 nF to 6 mF |
| Total Series Resistance (R1 + R2) | 7.5 MΩ to 142 kΩ (nominal range; select per X-cap value and discharge time target) |
| Discharge Behavior | Automatic discharge through external resistors when AC is disconnected (RC time constant designed to be < 1 s nominal) |
| Peak Drain Current (rating note) | 5.333 mA peak (rating conditions apply) |
| Operating Ambient | -10 °C to +105 °C |
| Package | SO-8 (D) |
Manufacturer Introduction
Power Integrations is known for power-conversion ICs and energy-efficient offline solutions. The CAPZero family targets standby-power reduction and compliance-oriented designs by addressing "always-on" losses in safety discharge networks.
For production designs, always validate safety, surge, and EMI performance using the latest official documentation and your compliance lab test results.
Applications
AC-DC Adapters & Chargers
Ultra-low no-load consumption designs where standby limits are strict and EMI filtering must remain robust.
Home Appliances
Systems requiring compliance-driven standby reduction while maintaining safety discharge behavior of X capacitors.
Low-Standby Offline Power Supplies
Any converter platform targeting very low standby power, especially when X-cap value needs to be increased for EMI reasons.
EMI Filter Optimization
Designs using larger X capacitors to reduce differential-mode noise and potentially shrink inductive components.
Quality & Reliability Notes
Validate D1–D2 peak voltage during surge tests in the final system. Keep engineering margin below breakdown and confirm probe isolation practices.
Select R1/R2 with adequate voltage and power ratings for single-fault conditions (e.g., D1–D2 short), and consider splitting resistors to distribute dissipation.
Use recommended pin coupling and layout spacing. Keep HV nodes away from low-voltage nets and sensitive sensing traces.
MOV and optional CEXT placement significantly affects surge stress. Follow the proven placement approach from the reference circuits and confirm with testing.
Equivalent & Alternatives
CAP200DG-TL is a packaging option (Tape & Reel) of the CAP200DG device family. In many BOMs, the closest "equivalent" is the same electrical part with a different packing suffix.
- Direct equivalent: CAP200DG (same device, different packing option depending on supplier listing).
- Functional alternative (discrete): traditional bleeder resistors across X capacitor (simple but increases standby loss).
- Functional alternative (active): HV switch + control network to disconnect/enable discharge path (higher BOM and validation effort).
FAQ
How does CAP200DG-TL reduce standby power compared with normal discharge resistors?
Where should the MOV be placed for best surge performance?
What is CEXT and when should I consider adding it?
Can I split R1 and R2 into multiple resistors?
Is CAP200DG-TL suitable for low AC input rails like 18 VAC / 24 VAC?
Summary
CAP200DG-TL is a practical choice when you need automatic X-capacitor discharge but want to avoid the standby power penalty of traditional discharge resistors. With a 1000 V rating, two-terminal simplicity, and wide X-cap compatibility, it helps engineers optimize EMI filters while keeping no-load consumption low.
CAP200DG-TL Specifications
- Specifications
- FAQ
- The Posts
- Attributes
- Property 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:
- Automatic Discharge
- Applications:
- Converter, ACDC
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
- Grade:
- -
- Qualification:
- -
- Category:
- Specialized ICs
1. How to order CAP200DG-TL from Hong Kong Tomato Electronics Co., Limited?
You can submit an RFQ for CAP200DG-TL directly on our website. After receiving your request, our sales team will contact you with price, availability, lead time and order details. Once you confirm the quotation, we will help you complete the order process.
2. How does Hong Kong Tomato Electronics Co., Limited ensure that CAP200DG-TL is original and reliable?
Hong Kong Tomato Electronics Co., Limited works with qualified supply channels and applies strict quality control procedures for electronic components including CAP200DG-TL. We pay close attention to supplier screening, product verification and delivery quality to help customers source with confidence.
3. Are the price and inventory of CAP200DG-TL accurate?
The price and inventory of CAP200DG-TL may change due to market conditions and stock movement. We update information as frequently as possible, but final quotation and availability should be confirmed by our sales team. In most cases, quotations are valid for 3 to 5 days.
4. What payment methods are accepted?
We usually accept Wire Transfer, PayPal, Alipay, WeChat Pay, Credit Card, Western Union and other agreed payment methods, depending on the order and customer location.
Please note that some payment methods may involve additional handling charges.
5. How is the shipping arranged?
Customers can choose major international carriers such as DHL, UPS, FedEx and other available shipping methods. Shipping options depend on package size, destination and delivery urgency.
After shipment, our team will send you the shipping status and tracking number by email.
Please note that tracking information may take some time to become active after dispatch.
6. What is the return or replacement policy for CAP200DG-TL?
All shipments are checked before dispatch. If there is a confirmed issue related to the delivered CAP200DG-TL, such as incorrect quantity, wrong item or verified product problem, please contact us as soon as possible.
Return or replacement requests are usually accepted only when the part remains unused and in its original packaging, and when the issue is reported within the agreed time after delivery.
Please contact our team first before returning any goods so that we can confirm the issue and provide return instructions.
7. How can I get technical support, such as the datasheet or specifications for CAP200DG-TL?
If you need technical support for CAP200DG-TL, including datasheets, specifications or general product information, please contact our sales team. We will do our best to help you obtain the relevant information.
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- Comparison
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| Images |  |
|
| Part No. | CAP200DG-TL | CAP200DG |
| Manufacturer | Power Integrations | Power Integrations |
| Series | CAPZero™ | CAPZero™ |
| Package/Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Packaging | Tape & Reel (TR) | Tube |
| Product Status | Active | Discontinued at Digi-Key |
| Programmable | Not Verified | Not Verified |
| Type | Automatic Discharge | Automatic Discharge |
| Applications | Converter, ACDC | Converter, ACDC |
| Mounting Type | Surface Mount | Surface Mount |
| Supplier Device Package | 8-SO | 8-SO |
| Grade | - | - |
| Qualification | - | - |
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