Find the right capacitor - fast, local and technically confident
When a project timeline or production run depends on a single component, waiting weeks for imports isn’t an option. Communica stocks thousands of capacitors for makers, students, technicians and procurement teams across South Africa - from everyday ceramics for decoupling to high-capacitance electrolytics for power supplies. Our value is availability, practical selection guidance, and local support including branch pickup in Samrand, Pretoria CBD and Cape Town.
Why buy capacitors from Communica
- Local stock across a broad set of dielectric types and voltage ratings, reducing lead times for projects and manufacturing.
- Specification clarity: we show working voltage, tolerance, ESR, ripple current and temperature range so you can match performance, not just capacitance.
- Practical procurement support: VAT invoices, account quotes and bulk order handling for tertiary labs and production lines.
Quick spec checklist for common use cases
Before you order, confirm these four essentials: working voltage, capacitance value, equivalent series resistance (ESR) for power applications, and temperature rating for environmental reliability. If you’re converting from a through-hole to SMD layout, note package size and ripple current limits.
| Type | When to use | Key spec calls |
|---|---|---|
| Ceramic (MLCC) | Decoupling, RF, space-constrained boards | Low ESR, small capacitance drift with temp |
| Electrolytic (Al) | Bulk energy storage in power supplies | High capacitance, check ripple current & polarity |
| Tantalum | Stable capacitance, compact power filtering | Low ESR, sensitive to surge - follow recommended de-rating |
| Film | Audio, timing, high-voltage DC | Excellent stability and low dielectric absorption |
Specification callouts and compatibility guidance
Match working voltage to the circuit’s maximum DC plus safety margin (commonly 20-50% for electrolytics; higher for harsher environments). For switching regulators, pick capacitors with low ESR and adequate ripple current rating. When replacing a part, verify polarity, package footprint and whether the original used voltage derating; physical fit and thermal behaviour matter as much as capacitance.
Explore our organized ranges to compare parts or browse brands: Shop by Category and Shop by Brand to filter capacitors by dielectric, voltage and package.
