Product matrix
Discrete current-regulating diodes, bare constant-current chips and fully assembled driver-free ceramic light sources - one linear technology, three levels of integration.
A diode that regulates current, in a SOD-123 footprint.
Our CRD current-regulating diodes are new SMT components developed and designed for LED drivers, packaged in the surface-mount SOD-123 form factor.
They start operating at voltages below 3 V and maintain stable current across a wide voltage fluctuation range, featuring a negative temperature coefficient. Adopting linear constant-current driving technology, they generate no EMI electromagnetic interference, and boast simple circuit design and high cost performance.
Multiple diodes can be connected in parallel to build high-power LED light sources.
- Starts below 3 V and holds current across wide voltage fluctuation
- Negative temperature coefficient for inherent thermal balance
- No EMI, simple circuit design and high cost performance
- Parallel connection builds higher-power light sources
SOD-123 outline.
Top, side and end views of the surface-mount package. All dimensions are in millimetres with an unspecified tolerance of ±0.1 mm.
Notes
1. All dimensions are in mm.
2. Unspecified tolerance: ±0.1 mm.
Six current grades, one package family.
Model codes denote nominal constant current. Each grade holds its current band across the full voltage window and is rated for a -55 °C to 150 °C junction and storage range.
| Model | Current (mA) | Shoulder characteristic | Maximum load | Power dissipation (W) | Tj & Tstg (°C) |
|---|---|---|---|---|---|
| CRD15 | 12 - 18 | 3.2 | 190 | 1.2 | -55 ~ 150 |
| CRD20 | 16 - 24 | 3.5 | 190 | 1.2 | -55 ~ 150 |
| CRD40 | 36 - 44 | 6 | 190 | 1.2 | -55 ~ 150 |
| CRD60 | 54 - 66 | 7 | 190 | 1.2 | -55 ~ 150 |
| CRD80 | 72 - 88 | 8 | 190 | 1.2 | -55 ~ 150 |
| CRD100 | 92 - 105 | 2.7 | 90 | 1.2 | -55 ~ 150 |
Specifications as published in the Lumichips brand manual. Model codes denote nominal constant current; Tj & Tstg is the junction and storage temperature range.
Driver-free light source.
Linear drive without EMI for easy EMC approval, with built-in NTC protection that cuts current at high temperatures to avoid thermal runaway.
Silicone phosphor lens cover plate
Uniform-light silicone phosphor lens - anti-yellowing and high temperature resistant, dustproof, waterproof and hermetically sealed. Soft light with anti-glare, high light transmittance and low light loss.
High-density LED chip array
A high-density chip dot matrix forming a high-efficiency light-emitting unit. Uniform light output without dark spots, anti-static and durable.
Driver control IC
AC high-voltage constant-current IC with triple circuit protection and flicker-free voltage-stabilising control. A miniature SMD integrated chip, compatible with 220 V direct drive solutions.
Ceramic COB substrate
High-purity alumina ceramic substrate with high insulation and excellent heat dissipation - the special substrate for 220 V driver-free COB.
Two substrate options
Choose 96% Al₂O₃ ceramic substrate (20 W/m·K, 4000 V withstand) or high-conductivity aluminium for different power levels.
All-solid-state construction
A chip free of fragile components with a 50,000+ hour lifespan - CE & RoHS certified and patent protected.
Customisable
Power, CCT, CRI and substrate sizes can be customised to your luminaire platform and mechanical envelope.
Tell us your power, CCT and CRI targets.
We will recommend the CRD grade and substrate that fits, and ship evaluation samples with the matching reference schematic.