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381LQ331M450K042
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Product Detailed Parameters
- Description：CAP ALUM 330UF 20% 450V SNAP TH
- Series：381LQ
- Mfr：Cornell Dubilier Knowles
- Package：Bulk
- Capacitance：330 µF
- Tolerance：±20%
- Voltage - Rated：450 V
- ESR (Equivalent Series Resistance)：553mOhm @ 120Hz
- Lifetime @ Temp.：2000 Hrs @ 105°C
- Operating Temperature：-25°C ~ 105°C
- Polarization：Polar
- Ratings：-
- Applications：General Purpose
- Ripple Current @ Low Frequency：1.25 A @ 120 Hz
- Ripple Current @ High Frequency：1.75 A @ 20 kHz
- Lead Spacing：0.394" (10.00mm)
- Size / Dimension：1.181" Dia (30.00mm)
- Height - Seated (Max)：1.654" (42.00mm)
- Surface Mount Land Size：-
- Mounting Type：Through Hole
- Package / Case：Radial, Can - Snap-In
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Buying Guide
Cornell Dubilier Knowles 381LQ331M450K042 is selected in Aluminum Electrolytic Capacitors category when ripple, lifetime, and operating corners must remain inside budget. Key specs include Description (CAP ALUM 330UF 20% 450V SNAP TH), Capacitance (330 µF), Rated voltage (450 V), Tolerance (±20%), and Temperature (-25°C ~ 105°C).
Selection Notes
- For 381LQ331M450K042, verify the operating temperature range (-25°C ~ 105°C) and derate as needed in your application.
- Check Size / Dimension (1.181" Dia (30.00mm)) against the datasheet conditions and your system-level constraints.
- Double-check the mounting type (Through Hole) for your intended installation method.
Alternates & Substitutions
- For 381LQ331M450K042, candidates that preserve capacitance 330 µF, rated voltage 450 V, and tolerance ±20% usually stay strongest before ESR, ripple, and lifetime trade-offs are weighed.
- For 381LQ331M450K042, the strongest alternatives usually keep capacitance 330 µF, rated voltage 450 V, and tolerance ±20% aligned at the same time, because matching only one headline number rarely preserves the whole product role (key constraints: package Radial, Can - Snap-In).
- For Aluminum Electrolytic Capacitors, give extra weight to candidates that stay strong on aluminum, electrolytic, capacitors because those details usually separate usable substitutes in this subcategory.
- When several parts look close on paper, prioritize the one that preserves the existing board fit, interface behavior, and maintenance assumptions.
FAQ
What Polarization does 381LQ331M450K042 have?
Polar
What is the Applications of 381LQ331M450K042?
General Purpose
What is the ESR (Equivalent Series Resistance) of 381LQ331M450K042?
553mOhm @ 120Hz
What voltage rating does 381LQ331M450K042 have?
450 V
Application Scenarios
Cornell Dubilier Knowles 381LQ331M450K042 is typically shortlisted in Aluminum Electrolytic Capacitors work after the team defines which mating, timing, thermal, or service condition would be most expensive to fix after build. Engineers typically derate voltage and validate thermal rise because lifetime is typically determined by core temperature in the enclosure. They provide energy storage and decoupling, shaping impedance versus frequency to stabilize rails and signal paths. Selection depends on ESR/ESL, ripple current, temperature behavior, dielectric stability, and lifetime under stress. In instrumentation, stable dielectric behavior prevents drift that would otherwise limit measurement repeatability.
Compatibility Advice
- When qualifying Cornell Dubilier Knowles 381LQ331M450K042, validate matching, grounding, and shielding in the final enclosure because RF performance is layout- and mechanics-dependent. Record the exact load, wiring, and limits so the same evidence can be regenerated during ECO or second-source review.
Project Fit
- Cornell Dubilier Knowles 381LQ331M450K042 is worth shortlisting for Aluminum Electrolytic Capacitors when the team can you can verify tolerance, derating, ESR or impedance versus frequency, and thermal rise on the assembled PCB.
