LXLZ Note: This Product Provides Solutions for Parameter Customization And Application.
General Purpose EMI Filter Wire Leads AC Line Filter
If you’re building equipment that needs clean, stable power — and you’ve been burned before by interference issues causing failures or failed compliance tests — this is the kind of component that quietly does its job and saves you headaches down the line.
The CW1B-L series is a single-phase, single-stage AC line EMI filter with wire lead termination, rated at 10A / 115-250V / 50-60Hz. It’s a straight-forward, no-frills EMI suppression solution built for general-purpose industrial and commercial applications.
From the label on the unit, you can see exactly what’s inside:
- CX: 0.1μF (across-the-line capacitor)
- CY: 2×3300pF (line-to-ground capacitors)
- L: 2×0.3mH (common-mode choke inductors)
This LC filter topology handles both common-mode and differential-mode noise — covering the typical interference frequencies that plague switching power supplies, motor drives, and other electronic equipment.
The metal enclosure is compact and solid. Wire leads (LINE side and LOAD side) are color-coded and pre-attached, making in-line installation clean and fast without needing special connectors or PCB mounting. It carries CE marking and is RoHS compliant, which matters when you’re shipping products into European markets.
Key Highlights
- ✅ Rated 10A / 115~250V AC — covers both North American and European voltage systems
- ✅ Single-stage LC filter design — effective attenuation of EMI/RFI noise on AC input lines
- ✅ Wire lead (in-line) connection — easy to integrate mid-cable without chassis cutouts
- ✅ Compact metal housing — durable, shielded, and mountable via built-in flanges
- ✅ CE certified & RoHS compliant — ready for global market compliance requirements
- ✅ Current range 1–10A — fits a wide range of light industrial and commercial equipment
- ✅ 50/60Hz compatible — universally applicable across different regional grids
- ✅ HIPOT tested — dielectric withstand testing done at factory level before shipment
Who Uses This
This filter is a solid fit for OEM manufacturers and engineering teams building:
- Industrial control panels and automation equipment
- Medical device power inputs (where EMI control is critical)
- Test & measurement instruments
- Audio/AV equipment sensitive to line noise
- Switching power supply input stages
- Motor controller and inverter input lines
- EV charging auxiliary circuits
Basically, if your product needs to pass EMC/EMI compliance testing (EN 55032, FCC Part 15, etc.) or if your end-users are complaining about interference, this goes in-line on the AC input and takes care of it.
Why Buy From Us (Factory Direct)
We manufacture these in-house — not trading company, not sourced from third parties. That means:
- Consistent quality control from raw component sourcing through finished product testing
- Custom specifications available — different current ratings, lead lengths, capacitor/inductor values on request
- OEM labeling supported — your brand on the product if needed
- MOQ flexibility for B2B orders — we work with both mid-volume and large-volume procurement
- Fast sample turnaround — engineering samples can typically ship within 5–7 business days
FAQ — What Buyers Usually Ask
Can we get custom current ratings other than 10A?
Yes. The CW1B-L series covers 1A through 10A. If your application needs a specific rating — say 3A or 6A — just let us know the specs and we’ll confirm availability or quote a custom run. We manufacture across the full range.
Do these come with CE and RoHS documentation we can use for our own product compliance?
Yes. We can provide CE declaration of conformity and RoHS compliance documentation. If you need specific test reports for your regulatory submission, reach out and we’ll discuss what’s available or what can be arranged.
What’s the minimum order quantity, and can we get samples first?
We support sample orders for qualified buyers — typically a small quantity for evaluation before you commit to a production order. MOQ for production runs varies by configuration; contact us with your target volume and we’ll work something out.
Can you do OEM/ODM put our brand name on the unit?
Yes, OEM labeling is available. We can print your brand, model number, or custom markings on the housing label. For ODM (custom circuit values or housing shape), that’s also possible depending on volume.
What’s the attenuation performance do you have insertion loss data?
We can provide insertion loss curves upon request. Performance follows standard single-stage LC filter characteristics. If you have specific attenuation requirements at certain frequencies (e.g., -40dB at 1MHz), share your spec and we can confirm whether standard product meets it or recommend an appropriate variant.