Tridonic LED driver codes pack most specs into the model number—power, current range, dimming type, housing, and performance tier. Learning to read them helps engineers and buyers choose the right driver fast and avoid costly returns.
How Tridonic LED Driver Codes Are Structured
Example code: LC 35/200-350/121 flexC lp SNC4
- Prefix (family):
LC - Power (W):
35 - Output current (mA):
200–350 - Max output voltage (V):
/121 - Current type:
flexC(adjustable) - Housing:
lp(low profile) - Series + generation:
SNC4(Essence Gen4)
Safety note: Above 60 V max output, the driver is non-SELV and may require extra installation precautions. At or below 60 V is typically SELV.
Prefixes in Tridonic LED Driver Codes (What the family means)
- LC – Constant-current driver (most LED modules)
- LCA – “Advanced” constant-current; often multi-protocol dimming
- LCI – Independent driver with strain relief for remote mounting
- LCO – Outdoor/IP-rated drivers (commonly IP65/67)
2) Power: Match your load
Look for 20 W, 35 W, 50 W, etc.
Pick a driver whose W rating ≥ your LED load (leave 10–20% headroom when possible).
3) Output: Current & Voltage
- flexC = adjustable current (via DIP, I-Select, or NFC)
- fixC = fixed current
Also check the max output voltage after the slash:
/54→ max 54 V (SELV)/121→ max 121 V (non-SELV)
Match:
- Current (mA) to the LED module’s rated current
- Max V to the LED string’s forward voltage (Vf)
4) Dimming / Control (pick what your project needs)
- one4all (o4a) – Multi-protocol (DALI/DSI/switchDIM/0–10 V)
- 0–10 V – Common in North America
- PH-C – Phase-cut (TRIAC/ELV)
- stepDIM – Two-level dimming via mains switch
- D4i / pD+ – DALI-2 with data (luminaire info, energy, diagnostics)
- AUX – Auxiliary output (e.g., for sensors)
5) Housing Type: Fit the space
- C – Compact
- SC – Stretched compact
- lp – Low profile (flat)
- SR – With strain relief (independent)
- h16 – Ultra-slim 16 mm
6) Series / Tier: Features & efficiency
- SNC – Essence (budget/economy)
- EXC – Excite (balanced features)
- PRE – Premium (advanced, high efficiency, DALI-2 options)
- ADV – Older “Advanced” series
Generations are shown with a number: e.g., SNC4 = Gen 4.
Quick Reference Table
| Code part | What it tells you | Examples |
|---|---|---|
| LC / LCA / LCI / LCO | Driver family | LC = constant current; LCO = outdoor |
| 35W / 50W | Max power | Choose ≥ LED load |
| 200–350 mA | Current range | flexC (adjustable) or fixC (fixed) |
| /54 /121 | Max output voltage | 54 V = SELV; 121 V = non-SELV |
| one4all / 0–10 V | Dimming/control | Pick to match controls |
| C / SC / lp / SR / h16 | Housing type | lp = low profile |
| SNC / EXC / PRE | Feature tier | PRE = premium |
Real-World Examples (decoded)
1) LCA 45W 500–1400mA one4all SC PRE
- 45 W, adjustable 500–1400 mA
- one4all multi-protocol dimming
- SC housing, PRE premium
Best for: commercial luminaires with advanced controls.
2) LC 20W 700mA fixC C SNC
- 20 W, fixed 700 mA
- Compact housing, SNC economy
Best for: simple residential/office fixtures.
3) LC 35/200–350/121 flexC lp SNC4
- 35 W, adjustable 200–350 mA
- Max 121 V (non-SELV)
- Low profile, SNC Gen 4
Best for: slim linear fixtures with long LED strings.
4) LC 50/400–1400/54 0–10V AUX lp EXC UNV
- 50 W, adjustable 400–1400 mA
- Max 54 V (SELV)
- 0–10 V dimming + AUX, low profile, EXC, UNV (120–277 V)
Best for: North American offices/retail.
5) LCO 90W 200–1050mA 165V pD+ NF C PRE3
- Outdoor 90 W, adjustable 200–1050 mA
- Max 165 V (long strings), pD+ DALI-2 with data
- NFC programmable, PRE Gen 3
Best for: street/outdoor luminaires.
Before You Order — 6-Point Checklist
- ✔ Current (mA): matches LED module
- ✔ Power (W): driver ≥ LED load (+ headroom)
- ✔ Voltage: max V covers LED string Vf
- ✔ SELV vs non-SELV: meets safety/installation rules
- ✔ Dimming: matches your control system (DALI, 0–10 V, etc.)
- ✔ Housing/space: C, SC, lp, SR, h16 as needed
FAQs
Check the max output voltage in the code or datasheet. ≤60 V is typically SELV; >60 V is non-SELV.
flexC gives you adjustability for different LED boards.
fixC is simpler and fine if you always use the same current.
Tridonic’s multi-protocol input (DALI/DSI/switchDIM/0–10 V) so one driver works with many control systems.
Universal input voltage (typically 120–277 V AC).
Conclusion
Once you know the code parts—prefix, power, current/voltage, dimming, housing, series—you can select a Tridonic driver quickly and confidently.
Always confirm with the official datasheet before procurement.
Want more guides like this? Explore our LED & Lighting Automation section to stay ahead in MEP innovation.
For official specifications, see the
– Tridonic LED driver resources (datasheets)
– DALI Alliance (DALI/D4i standards)
