33.0µF 4V DC UWX Surface Mount Capacitor
Part Number: 4UWX33
33.0µF • 4V DC • 85°C • Electrolytic Capacitor
Capacitance
33.0µF
Voltage
4V DC
Tolerance
±±20%
Temp Rating
85°C
Mounting
smd
Dielectric
aluminum
$9.25 each × 1
About the 33.0µF 4V DC UWX Surface Mount Capacitor
UWX Surface Mount capacitor. 33.0µF, 4V DC. 85°C rated.
Applications for 33.0µF 4V DC Electrolytic Capacitors
Typical design scenarios where the 4UWX33 (33.0µF / 4V DC) is specified:
General Electronics
Filtering and energy storage for circuits operating at 4V DC voltage levels
Industrial Equipment
Process control, PLC I/O modules, and automation system power conditioning
High-Volume Assembly
Automated pick-and-place manufacturing for consumer electronics, IoT devices, and production PCBs
Medical & Commercial
Diagnostic equipment, HVAC controls, and commercial appliance electronics
Need a Replacement for 4UWX33?
33.0µF · 4V DC · smd
Our engineers can cross-reference this part to find a compatible replacement that meets or exceeds the original specifications — with full CoC and traceability documentation.
Technical Specifications
Complete specifications for 4UWX33
Why Choose This Electrolytic Capacitor?
- Part of the UWX series — cross-reference available for equivalent parts from other manufacturers
- 100% electrically tested before shipment for guaranteed in-spec performance
- Ships same-day from US warehouse when ordered before 3 PM EST
Need Technical Assistance?
Our capacitor specialists can help with selection, cross-reference, and application questions.
Why Buy From Specap?
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- Cross-reference assistance available
Looking for an Equivalent?
We can help cross-reference 4UWX33 with alternative part numbers.
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Frequently Asked Questions
Common questions about 4UWX33 and electrolytic capacitors
What applications use a 33.0µF 4V DC electrolytic capacitor?
This 33.0µF 4V DC electrolytic capacitor serves filtering, timing, and energy storage functions in circuits operating within its voltage and temperature ratings.
Can the 4UWX33 handle high-temperature environments?
The 4UWX33 is rated for 85°C, which covers standard commercial and light-industrial environments. For installations in enclosed cabinets or hot climates where ambient temperatures exceed 65°C, consider selecting a 105°C-rated alternative for additional thermal margin.
What reflow soldering profile should I use for the 4UWX33?
Follow the standard IPC/JEDEC J-STD-020 reflow profile: preheat to 150–200°C, ramp to peak temperature of 245–260°C (lead-free) for no more than 30 seconds above 217°C. Ensure adequate pad design per the manufacturer-recommended land pattern for optimal solder joint reliability.
What capacitors can replace the 4UWX33?
Cross-referencing the 4UWX33 requires matching capacitance (33.0µF), voltage (4V DC), temperature rating (85°C), and physical dimensions. ESR and ripple current ratings must also meet or exceed the original spec for reliable operation. Contact our technical team at 800-731-1433 for verified cross-reference options — we maintain compatibility data across major manufacturers.
Should I derate the voltage when using the 4UWX33?
Yes. Industry best practice is to operate capacitors at 60–80% of their rated voltage. For the 4UWX33 rated at 4V DC, this means designing your circuit to keep the applied voltage below 3V under all conditions including transients. Voltage derating significantly extends capacitor life — each 10% reduction in applied voltage can roughly double the expected service life for electrolytic types.
What is the lead time for the 4UWX33?
In-stock items ship same-day when ordered before 3 PM EST, with standard delivery of 2–5 business days within the continental US. If the 4UWX33 shows as out of stock, our sourcing team can typically locate electrolytic capacitors within 1–2 weeks through our manufacturer and distributor network. Contact us for expedited options or large-quantity pricing.
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