L-934CGCK LED Lamp Specifications and Features: Full Technical Guide

Overview of the L-934CGCK LED Lamp

The L-934CGCK LED lamp is a compact lighting module commonly used in commercial signage, task lighting, and retrofit fixtures. This guide breaks down the L-934CGCK LED lamp specifications and features so makers, technicians, students, and procurement teams in South Africa can choose, size, and install the lamp reliably.

Primary specifications at a glance

Key parameters include forward voltage, nominal current, luminous flux, correlated colour temperature (CCT), colour rendering index (CRI), power consumption, beam angle, and operating temperature. These define electrical compatibility, light output, colour quality, and thermal management needs.

Why these specs matter

• Electrical matching: The forward voltage and rated current determine the correct driver or resistor network to power the lamp safely.
• Thermal management: Power dissipation and operating temperature affect lumen maintenance and lifetime; adequate heat sinking is essential.
• Photometric suitability: Lumen output, CCT and beam angle ensure the lamp meets visual needs for task or ambient lighting.

Standards, labels and part variants

The L-934CGCK designation typically groups lamps with shared footprint and optical features but multiple electrical bins. When comparing SKUs, check the exact suffix for current, CCT and CRI variations. For procurement teams, record the full part number and requested bin to avoid mismatches.

Selection criteria: matching driver and power

Select a constant-current LED driver rated at or slightly above the lamp's nominal current. If multiple L-934CGCK modules are placed in series, the driver must support total string voltage. For parallel modules, use individual current-limiting or matched drivers to ensure even brightness.

Simple calculations

Use Ohm's law and power equations for basic sizing:

Voltage per module (Vf) x number of modules = total string voltage (Vstring)

Power per module P = Vf x If. Total power Ptotal = P x number of modules.

Example (estimate): Vf = 12 V per module at If = 350 mA => P = 12 V x 0.35 A = 4.2 W. For four modules in series, Vstring = 48 V and Ptotal = 16.8 W. Use a 20% headroom for driver thermal margin: choose a 22 W driver (estimated cost example: 1 x 24 W constant-current driver ~ ZAR 150-200 depending on brand and stock; check current pricing and stock at Communica).

Wiring and connection examples (ASCII)

Series string (single driver):

+ (Driver) ----[Module1]----[Module2]----[Module3]----[Module4] ---- - (Driver)

Parallel modules (each module requires current regulation):

+ (Driver) -+-[Module1]-+
             |            |
             +- [Module2]-+
             |            |
             +- [Module3]-+
                  - (Driver)

Use appropriate gauge wire for the current and length. For runs under 2 m at <1 A, 22 AWG (0.33 mm2) may be acceptable; for higher currents or longer runs, use thicker conductors. When in doubt, consult wiring tables or an electrician for installations connected to mains.

Thermal considerations and lifetime

LED junction temperature (Tj) directly affects lumen depreciation. Provide a thermal path to a heatsink or metal enclosure. If the lamp is enclosed, derate current per the manufacturer's derating curve. Typical guidance: reduce current 10-30% above 40 degreesC ambient to maintain expected lifetime.

Troubleshooting common issues

• Flicker or dimming: verify driver is constant-current and within voltage range; inspect connections for loose wiring or poor solder joints.
• Overheating: confirm heat sinking and ambient temperature; reduce current or improve ventilation.
• Colour shift: prolonged overheating or using mismatched bins can shift CCT; match bins for consistent appearance.

Local purchasing and application notes (South Africa)

For South African makers and procurement teams: Communica stocks LED modules, drivers, connectors and thermal adhesives. Typical lead times vary by bin and CCT; allow extra time for non-standard CRI or custom assemblies. When quoting, request VAT invoices and specify branch collection (Samrand, Pretoria CBD, or Cape Town) or delivery options.

Recommended accessories stocked locally: constant-current drivers (match current and voltage), screw terminal LED holders, thermal pads, aluminium heatsinks, M3/M4 mounting hardware, and IP-rated enclosures when used outdoors (confirm enclosure suitability for your environment).

Example SA use-cases

• Student project: single L-934CGCK module powered by a 350 mA driver on a small heatsink; bench cost estimate ZAR 200-300 for module + driver (estimate only).
• Retail signage: multiple modules in series on 48 V drivers, sealed enclosures, and local assembly for weatherproofing.
• Workshop lighting: wide-beam modules with CRI 80+ and larger heatsinks for long operating hours.

Sources

• Communica LED Lighting and Modules Collection
• Understanding LED Power Supplies and Drivers (EDN)
• How to Size an LED Driver (Circuit Basics)
• Thermal Management for LED Systems (LED Professional)