Buy 1N5404 Diode Online in South Africa | Fast Local Stock at Communica

Need 1N5404 Diodes in South Africa?

The 1N5404 is a widely used general-purpose silicon rectifier diode, supporting up to 3A of average forward current and a peak reverse voltage of 400V. Trusted in South African industrial repairs, student projects, and prototyping, this diode is an excellent fit for power rectification, AC mains adaptation, and various low- to medium-power DC circuits.

Communica stocks genuine 1N5404 diodes, sourced from reputable manufacturers, with immediate local availability. Makers, technicians, and buyers can benefit from:

• Substantial stock on hand in South Africa - no import delays
• Pickup options at Samrand, Pretoria-CBD, or Cape Town branches
• VAT-compliant invoices for business and institutional procurement
• Fast quotes and bulk purchasing for production or educational needs

1N5404 Diode Specifications at a Glance

Common brands stocked at Communica include Diodes Incorporated, MCC, and Vishay, all suitable for new installs or maintenance repairs. Find bulk packs or singles to suit your build, whether for rapid school lab projects, tertiary engineering training, or critical repair benches.

Choosing and Applying the 1N5404 Diode

When selecting rectifier diodes, consider your circuit's maximum repetitive peak reverse voltage and continuous load current. The 1N5404 comfortably handles most transformer-based power supply rectification tasks up to its 400V/3A thresholds. For higher voltage needs, adjacent models like the 1N5406/1N5408 may be required.

Example: Bridge Rectifier Calculation (SA 230V AC Mains)

Suppose you're building a 12V, 2A DC supply from a step-down transformer:

• Secondary winding: 12V AC, rated for at least 2A
• 4 x 1N5404 diodes in a standard full-wave bridge formation
• Peak repetitive reverse voltage: 12V x 2 ~ 17V (the 400V rating of the 1N5404 is ample margin)
• Each diode conducts the load current during its phase cycle; ensure good airflow if running near 3A

Basic polarity marking for installation (side view):

        |------|      (Silver band = Cathode "-")
Input --|      |----|>|---- Output (+12V DC)
        |------|

Locally Relevant Benefits

• All diodes supplied with clear part-markings and traceable source for institutional use
• Competitive lead times for re-stocking on large orders
• Accessible technical support during branch trading hours
• VAT-compliant documentation for companies, municipalities, and universities

Start your order by browsing the Semiconductors and All Products sections. Confirm local branch stock online or by phone to expedite pickup or plan your next project build-out efficiently.

Sources

• Communica - Semiconductors Category
• Vishay 1N5400/1N5408 Datasheet
• Diodes Incorporated - 1N5404 Datasheet
• Communica - Branches & Trading Hours
• ON Semiconductor 1N5404 Datasheet