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Home > Products > Integrated Circuits (ICs) > Specialized ICs > EWS4803.3
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EWS4803.3

Manufacturer Part Number:
EWS4803.3
Manufacturer / Brand
IPD
Part of Description:
1141
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 10368 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number EWS4803.3
Manufacturer / Brand IPD
Stock Quantity 10368 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description 1141
Lead Free Status / RoHS Status: RoHS Compliant
Condition New Original Stock
Warranty 100% Perfect Functions
Lead Time 2-3days after payment.
Payment Credit Card / PayPal / Telegraphic Transfer (T/T) / Western Union
Shipping by DHL / Fedex / UPS / TNT
Port HongKong
RFQ Email Info@IC-Components.com

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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Company Name : IC COMPONENTS LTD
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BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

What are the key design considerations when integrating the EWS4803.3 into a 48V industrial power system with high transient loads?
The EWS4803.3 requires careful input filtering and transient voltage suppression due to its sensitivity to voltage spikes above 60V. Engineers should implement a π-filter at the input stage and use TVS diodes rated for 58V clamping to protect against inductive load transients. Additionally, ensure the upstream power source can deliver sustained current above 3.3A during peak loads to avoid brownout conditions.
Can the EWS4803.3 be used as a direct replacement for a Mean Well IRM-480-3.3 in an existing DIN rail application?
While both units provide 48V-to-3.3V conversion, the EWS4803.3 has a narrower operating temperature range (-25°C to +70°C) compared to the IRM-480-3.3 (-40°C to +85°C), making it unsuitable for outdoor or cold-storage environments without additional thermal management. Also, verify mounting hole alignment and connector pinout compatibility before substitution.
What isolation voltage and safety certifications should be verified when using the EWS4803.3 in medical or hazardous location equipment?
The EWS4803.3 provides basic functional isolation with a rated withstand voltage of 1500VAC for 1 minute, but it lacks reinforced insulation or certifications such as IEC 60601-1 or ATEX. It is not recommended for patient-connected medical devices or Zone 2 hazardous areas without additional isolation barriers.
How does the EWS4803.3 perform under sustained overload conditions, and what protection mechanisms are built in?
The EWS4803.3 includes foldback current limiting that activates at approximately 120% of rated load. Prolonged operation beyond this threshold causes thermal shutdown after 30–60 seconds depending on ambient temperature. Continuous overload scenarios require external current monitoring or a higher-rated supply to prevent cycling behavior.
Is the EWS4803.3 suitable for battery-powered systems where input voltage may drop below 36V during discharge?
No, the EWS4803.3 has a minimum input voltage of 38V; operation below this threshold results in unstable output and potential latch-up. For battery applications with wide voltage swings, consider a buck-boost converter or a module with a wider input range such as 24–75V.
What output noise and ripple characteristics should be expected from the EWS4803.3 in sensitive analog measurement circuits?
The EWS4803.3 exhibits typical output ripple of 80mVpp at full load with switching frequency harmonics around 150kHz. In precision analog systems, add a post-regulator LDO or LC filter to reduce noise below 10mVpp. Avoid routing sensitive signal traces near the converter’s switching nodes.
Are there known compatibility issues when paralleling multiple EWS4803.3 units for higher current output?
The EWS4803.3 lacks active current sharing or synchronization features, making direct parallel operation unreliable due to uneven load distribution and potential thermal runaway. For higher current needs, use a single higher-capacity module or implement external ballast resistors with strict thermal monitoring.
What derating guidelines apply to the EWS4803.3 when operating in enclosed cabinets with elevated ambient temperatures?
Output power must be linearly derated above 50°C ambient: reduce load by 2.5% per °C increase. At 70°C, maximum continuous output drops to 70% of rated capacity. Ensure adequate airflow or heatsinking if cabinet temperatures exceed 45°C during operation.
Can the EWS4803.3 withstand input reverse polarity connection, and what protection is recommended?
The EWS4803.3 has no internal reverse polarity protection. Applying negative voltage to the input will damage internal circuitry. Always include a series Schottky diode or MOSFET-based reverse protection circuit capable of handling the full input current.
How does long-term reliability of the EWS4803.3 compare to similar IPD modules in continuous 24/7 industrial operation?
Field data indicates the EWS4803.3 achieves a MTBF of 250,000 hours at 40°C ambient under nominal load, consistent with other IPD industrial-grade modules. However, electrolytic capacitors may degrade faster in high-humidity environments—conformal coating is advised for installations above 85% relative humidity.

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EWS4803.3

IPD

1141

In Stock: 10368

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