Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
0.0 / 5.0
- (0 Ratings)
F4804A-G
Electronics Part Number
F4804A-G-WXManufacturer
Bel Power Solutions
F4804A-G
Description
DC-DC Converter Input Filter 4A SMD Surface MountInventory
730 Pcs New Original In Stock
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
RFQ (Request for Quotations)
Submit your RFQ directly on the product detail page or the RFQ page.
Our sales team will respond within 24 hours.
Payment method
PayPal (recommended for new customers)
Credit Cards
Wire Transfer (T/T) – Available in USD, EUR, HKD, and other currencies.
Important Notice
You'll receive a confirmation email after submitting an RFQ.
Didn't get it? Check your spam folder and whitelist Info@WINSURE-Electronics.com
Prices and stock may change; we'll reconfirm your order.
Questions? Contact us anytime.
Freight
Basic cost: USD 70.00
Actual cost may vary depending on weight and destination
Shipping method
Shipped from Hong Kong via FedEx/DHL/UPS/TNT
Delivery Time
In-stock items: Ready to ship in 1-2 days
Transit time: 3-5 business days (FedEx/DHL/UPS)
Special requests? Contact us: Info@WINSURE-Electronics.com
Quantity
Minimum 1
Minimum 1
(*) (*) is mandatory
We'll get back to you within 24 hours
Technical Specifications
Category
Board Mount Power Supply Accessories
Manufacturer
Bel Power Solutions
Packaging
Bulk
Series
F
Base Product Number
F4804A
Product Status
Active
Accessory Type
Input EMI Filter
For Use With/Related Products
DC DC Converters
Data Sheet Document (D)
Datasheets
Download F4804A-G Product Specification (PDF)
HTML Datasheet
F4804A-G-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8504.40.9580
Additional Information
Other Names
179-2439-2 179-2439-1 179-2439 179-2439-2INACTIVE 179-2439-6INACTIVE 179-2439-1-ND 179-2439-2-ND F4804AG
Standard Package
200
Reviews
0.0/5.0-(Show up to 5 Ratings)
No reviews yet
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
When designing in the F4804A-G input EMI filter for a high-density DC-DC converter layout, what are
When integrating the F4804A-G into a high-density design, maintain a solid ground plane beneath the filter to minimize loop area and reduce EMI coupling. Use wide, short traces for both input and output connections to reduce parasitic inductance. Ensure adequate copper pour for thermal dissipation, especially since the F4804A-G handles up to 4A; avoid placing heat-sensitive components nearby. Keep sensitive analog circuitry at a distance and consider placing the F4804A-G as close as possible to the DC-DC converter’s input pins to maximize filtering effectiveness before noise propagates through the board.
Can the F4804A-G be used as a drop-in replacement for the F4804A-RG in an existing design, and are t
Yes, the F4804A-G can serve as a direct replacement for the F4804A-RG, as both share identical electrical specifications and SMD footprint. However, the '-G' suffix indicates a different plating or packaging variant compliant with ROHS3, which may affect solder wetting or thermal fatigue performance in extreme thermal cycling environments. Verify reflow profile compatibility—especially peak temperature—and ensure your assembly process accounts for any minor differences in moisture sensitivity (though both are MSL1). No derating is required, but validate under operating conditions if used in mission-critical or wide-temperature applications (-40°C to +125°C).
How does the F4804A-G perform in systems with unstable input sources, such as those powered by unreg
The F4804A-G is a passive EMI filter and does not regulate voltage, so it remains functional across a wide input range typical of unregulated DC-DC bus systems (e.g., 24V or 48V buses with transient swings). However, input instability can increase high-frequency noise content, potentially stressing downstream converters despite the filter. Ensure the source impedance combined with the F4804A-G’s insertion loss profile doesn’t create resonance peaks—perform impedance stability analysis. In systems with frequent load transients, consider additional bulk capacitance upstream of the F4804A-G to dampen ringing and prevent conducted noise from bypassing the filter.
What are the failure modes of the F4804A-G under sustained overcurrent conditions, and how can desig
The F4804A-G lacks active protection, so sustained overcurrent beyond its 4A rating can lead to thermal degradation of internal ferrite components or trace delamination due to I²R heating. While it won’t fail short-circuit typically, prolonged stress reduces lifespan and EMI performance. In redundant power systems where current sharing may imbalance, monitor total input current and use upstream fusing or current-limiting circuitry. Derate to 3.2A (80% of rating) in ambient temperatures above 85°C, and avoid placing the F4804A-G downstream of hot-swap controllers without inrush limiting.
When comparing the F4804A-G to alternative input filters like the Murata NFE2104B223 or TDK MPZ2012
Compared to the Murata NFE2104B223 and TDK MPZ2012B102, the F4804A-G offers higher current handling (4A vs. 1.6A–2.5A), making it more suitable for industrial DC-DC converters above 50W. However, the smaller alternatives may offer better ultra-high-frequency attenuation (>100MHz) due to lower parasitic capacitance. The F4804A-G provides balanced differential and common-mode filtering optimized for typical switch-mode noise (1–30MHz). Choose the F4804A-G when current and thermal robustness are prioritized; consider Murata or TDK for tighter space constraints and superior GHz-range suppression, but pair with an external current-handling solution.
When designing in the F4804A-G input EMI filter for a high-density DC-DC converter layout, what are
When integrating the F4804A-G into a high-density design, maintain a solid ground plane beneath the filter to minimize loop area and reduce EMI coupling. Use wide, short traces for both input and output connections to reduce parasitic inductance. Ensure adequate copper pour for thermal dissipation, especially since the F4804A-G handles up to 4A; avoid placing heat-sensitive components nearby. Keep sensitive analog circuitry at a distance and consider placing the F4804A-G as close as possible to the DC-DC converter’s input pins to maximize filtering effectiveness before noise propagates through the board.
Can the F4804A-G be used as a drop-in replacement for the F4804A-RG in an existing design, and are t
Yes, the F4804A-G can serve as a direct replacement for the F4804A-RG, as both share identical electrical specifications and SMD footprint. However, the '-G' suffix indicates a different plating or packaging variant compliant with ROHS3, which may affect solder wetting or thermal fatigue performance in extreme thermal cycling environments. Verify reflow profile compatibility—especially peak temperature—and ensure your assembly process accounts for any minor differences in moisture sensitivity (though both are MSL1). No derating is required, but validate under operating conditions if used in mission-critical or wide-temperature applications (-40°C to +125°C).
How does the F4804A-G perform in systems with unstable input sources, such as those powered by unreg
The F4804A-G is a passive EMI filter and does not regulate voltage, so it remains functional across a wide input range typical of unregulated DC-DC bus systems (e.g., 24V or 48V buses with transient swings). However, input instability can increase high-frequency noise content, potentially stressing downstream converters despite the filter. Ensure the source impedance combined with the F4804A-G’s insertion loss profile doesn’t create resonance peaks—perform impedance stability analysis. In systems with frequent load transients, consider additional bulk capacitance upstream of the F4804A-G to dampen ringing and prevent conducted noise from bypassing the filter.
What are the failure modes of the F4804A-G under sustained overcurrent conditions, and how can desig
The F4804A-G lacks active protection, so sustained overcurrent beyond its 4A rating can lead to thermal degradation of internal ferrite components or trace delamination due to I²R heating. While it won’t fail short-circuit typically, prolonged stress reduces lifespan and EMI performance. In redundant power systems where current sharing may imbalance, monitor total input current and use upstream fusing or current-limiting circuitry. Derate to 3.2A (80% of rating) in ambient temperatures above 85°C, and avoid placing the F4804A-G downstream of hot-swap controllers without inrush limiting.
When comparing the F4804A-G to alternative input filters like the Murata NFE2104B223 or TDK MPZ2012
Compared to the Murata NFE2104B223 and TDK MPZ2012B102, the F4804A-G offers higher current handling (4A vs. 1.6A–2.5A), making it more suitable for industrial DC-DC converters above 50W. However, the smaller alternatives may offer better ultra-high-frequency attenuation (>100MHz) due to lower parasitic capacitance. The F4804A-G provides balanced differential and common-mode filtering optimized for typical switch-mode noise (1–30MHz). Choose the F4804A-G when current and thermal robustness are prioritized; consider Murata or TDK for tighter space constraints and superior GHz-range suppression, but pair with an external current-handling solution.
Quality Assurance (QC)
WINSURE ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
Sep 15 2026
