Round Shape Triac dimming Constant Voltage LED Driver 25W
This 25W constant-voltage TRIAC-dimmable LED power supply features multiple protections against short-circuit, over-temperature, and overload conditions. It utilizes natural air cooling and delivers smooth, stable, and flicker-free dimming across a 0–100% range. Model SMT-R12025-VT-P SMT-R24025-VT-P Certificate UL pending / ROHS / SELV Output DC Voltage 12V 24V Rated current 2.08A 1.04A Rated power 25W Voltage Tolerance ±0.5V Input Voltage Range 120-277VAC Frequency Range 47 - 63Hz Power Factor @ full load ≥0.98@120VAC ≥0.91@277VAC ≥0.97@120VAC ≥0.92@277VAC THD(Typ.) @ full load ≤10%@120VAC ≤15%@277VAC ≤15%@120VAC ≤20%@277VAC Efficiency @ full load ≥74%@120VAC ≥73%@277VAC ≥78%@120VAC ≥75%@277VAC AC Current (Max.) 0.29A Inrush Current (Typ.) 1.92A, 68us @50%Ipeak 120VAC 6.08A, 44us @50%Ipeak 277VAC Protection Short Circuit Hiccup mode, recovers automatically after fault condition is removed. Over Load 105%~120% Hiccup mode, recovers automatically after fault condition is removed. Over temperature Ambient temperature over 55℃±5℃, output reduce to 50%; Ambient temperature over 60℃±5℃, output off; When the temperature is reduced to 45℃±5℃ the output returns to 100%. Environment Working TEMP. -40~+50℃ (see below derating curve) Working Humidity 20 - 90%RH non-condensing Storage TEM.,Humidity -40 - +80℃,10 - 95% RH non-condensing TEMP.coefficient ±0.03%/℃(0 - 50℃) Vibration 10 ~ 500Hz, 2G 12 minutes/cycle, X Y Z axis 72 minutes each Safety & EMC Safety standards UL8750; CAN/CSA-C22.2 No.250.13 Withstand voltage I/P-O/P:1.88KVAC Isolation resistance I/P-O/P:100MΩ / 500VDC / 25℃ / 70% RH EMC Immunity FCC/ICES do not request this test. EMC Emission FCC 47 CFR Part 15, Subpart B Surge Immunity Test AC Power Line: Differential Mode 1KV Others Net Weight 0.15KG Dimension 69.4*62.9*24mm(Φ*W*H) Packing 385*290*190mm 80pcs/CTN Notes 1. All parameters NOT specially mentioned are measured at rated load for 120VAC and 25℃of ambient temperature. 2. Derated output is required at low input voltage to ensure long service life. [Custom Product Tab] When the input voltage is 120Vac, the number of LED Driver matched by circuit breakers is as follows: MCB Type Level The number of LED Driver B type 10A 66 13A 86 16A 105 20A 132 When the input voltage is 277Vac, the number of LED Driver matched by circuit breakers is as follows: MCB Type Level The number of LED Driver B type 10A 125 13A 163 16A 200 20A 250 When the input voltage is 120Vac, the number of LED Driver matched by circuit breakers is as follows: MCB Type Level The number of LED Driver C type 10A 66 13A 86 16A 105 20A 132 When the input voltage is 277Vac, the number of LED Driver matched by circuit breakers is as follows: MCB Type Level The number of LED Driver C type 10A 140 13A 183 16A 225 20A 281 Note： 1. The above quantities of the led drivers connected on the Type C is recommended base on the maximum ambient temperature is 50 °C. 2. The breaker should be selected according to the input rated voltage, input rated current, ambient temperature, and trip characteristic curve. ■ Mechanical Specification American wire gauge Input wire Black(L) White(N) (2*18AWG) Output wire Red(V+) Black(V-) (2*22AWG) ■ Dimming Operation and Connecting Diagram Using one dimming ---TRIAC/Phase cut dimming 1. The Pulse-Width Modulation (PWM) of output voltage can be adjusted through input terminal of the AC phase line(L) by connection a phase /Triac dimmer or lighting system. 2. Working with forward phase /leading edge, MLV and Reverse phase /trailing edge, ELV, TRIAC dimmers or light system. 3. Min. loading is about 10% 4. Please try to use dimmers with power at least 1.5 times as the output power of the driver. [/Custom Product Tab]