F4804A POWER ONE, F4804A Datasheet - Page 32

• Manufacturer Part Number: F4804A
• Description: DC-DC CONV INP FILTER 4A SMD
• Manufacturer: POWER ONE
• Series: Fr

Specifications of F4804A

• Filter Type: Power Line
• Voltage - Rated: 80V
• Current: 4A
• Mounting Type: Surface Mount
• Termination Style: Surface Mount (SMD,SMT)
• Operating Temperature Min Deg. C: -40C
• Operating Temperature Max Deg. C: 85C
• Rad Hardened: No
• Input Voltage Range: 0 V to 80 V
• Input Voltage (nominal): 48 V
• Package / Case Size: 21.59 mm x 19.05 mm x 6.78 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Inductance: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4089730

The F4804 is not recommended for
new designs and has been replaced
by the F4804A. Please refer to the
F4804A data sheet for new product
specifications.
F4804 Applications
Differential and Common Mode filtering for dc-dc
converters with 48 V and 24 V input:
 Telecommunications
 Data communications
 Distributed power solutions
Description
The F4804 Input Filter minimizes the conducted and radiated emissions generated by switch mode dc-dc
converters, and allows board designs utilizing dc-dc converters to easily meet stringent Class B conducted
emissions requirements.
Unlike most available off-the-shelf filter modules, the F4804 contains, in addition to common mode noise reduction
components, a differential LC-filter stage, which guarantees compliance with conducted noise standards in the
whole frequency range from 150 kHz to 30 MHz, including fundamental switching frequency and its harmonics.
Test results show headroom of 15-20 dB for conducted noise quasi-peak levels, in relation to Class B
requirements; see Figs. 2-8.
The F4804 filter is designed specifically for distributed power solutions in conjunction with dc-dc converters. Low
profile and small size (only 0.75 sq. in.) in a surface mount package helps the system designer save real estate on
the system board, and simplifies the layout.
A single F4804 filter can be used with multiple converters, and is capable of providing up to a nominal 4 A to the
converter input bus. It can provide up to 3 A at 85 °C ambient with no airflow.
MCD10059 Rev. 1.1, 21-Jan-10
F & FC Series DC-DC Converter Input Filters
Page 32 of 41
Features
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RoHS lead free solder and lead solder exempted
products are available
Maximum current 4 A
Maximum operating input voltage 80 V
100V/50V 100 ms transient withstand capability
Differential LC-filter stage
Surface mounted design
Small footprint – only 0.75 sq. in.
Low profile: 0.339” [8.61 mm] maximum
Low weight: 0.18 oz [5 g]
-40 °C to 85 °C ambient temperature range
No airflow required up to 3 A current @ 85 °C
Enables DC-DC converter compliance with
EN55022 and FCC Class B requirements
conducted emissions
UL60950 recognition in U.S. & Canada, and
DEMKO certification per IEC/EN60950
F4804, Not for New Designs
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