Product Name: LED Switching Power Supply 12V 250W 300W 400W Model NO.: 12V 250W 300W 400W Brand: Shen Zhen Yinlongtenfei Pack Sealing Size: SOT-23 Power Supply Voltage: 1.5-36V In-Out: Step-down Type Modulation System: PWM Power Supply Mode: Constant Current Source Certification: CE, RoHS Circuit Structure: PWM Controlled Driving Method: LED Constant Current Output Type: Single Usage: Light, Industry, Digital Products, Vehicle Transport Package: Corten Specification: 100*85*50 Origin: Shenzhen HS Code: 8536500000 Product Description 1:COMPANY GATE2:WORKPLACE3:about PRODUCTOR4:SpecificationsModel SpecificationD-120 AD-120 BDC Output Voltage24V12V12V24VIutput Voltage Error± 2%± 6%± 2%± 7%Rated Output Current20A30A20A30AOutput Current Range2-10.4A2-155A2-10A2-10.5ATripple and Noise60mVp-p120mVp-p60mVp-p150mVp-pIniet Stability± 0.5%± 1%± 0.5%± 1%Tolerance Voltage± 0.5%± 5%± 0.5%6%DC Output Power287W279WEfficiency95%93%Adjustable Range for DC Voltage110VAC/170~264VAC selected by switch 47~63Hz; 240~370VDCInput Current2.5A/115V 1.25A/230VAC Inrush CurrentCold-Start Current: 35A/115V, 35A/230VLeakage Current<3.5mA/240VACOverload Protection105%~150% Type: Foldback Current Limiting, Reset: Auto RecoveryOver Voltage Protection......High Temperature Protection......Temperature Coefficient± 0.03% /ºC (0~50ºC)Start, Rise, Hold time200ms, 50ms, 30msVibration10~500Hz, 2G 10min,/1cycle, atotal of 60 minutes, Each axesWithstand VoltageBetween Input and Output: 1.5KVAC, Input and Shell: 1.5KVAC, Output and Shell: 0.5KVACIsolation ResistanceInput and Output Intermal: Input and Enclosute, Output and Enclosure: 500VDC/100M OhmsWorking Temperature and Humidity`-10ºC~+60ºC (Refer to Output Derating Cutve), 20%~90%RHStorage Temperature and Humidity`20ºC~+85ºC, 10%~95%RHOverall Dimension84*47*30 mmWeight0.95 kgsSafety StandardsCEEMC StandardsMeet FCC Part 15J Conduction class B 5: FAQQuestion 1: What is your payment term? Answer: T/T 30% in advance and balance 70% before shipment or L/C at sight.Question 2: What is your delivery term? Answer: EXW, FOB, CFR, CIFQuestion 3: What about Lead time? Answer: normally, it takes about 7to 30 days after receiving your advance payment.Question 4: Can you produce according to our samples? Answer: Yes, we can produce according to your samples or technical drawing, we will make the molds and fixtures.Question 5: What is your sample's policy? Answer: We provide the sample according to your requirements, and you get to pay the sample's fee and courier freight, we will return the sample fee to you once you confirm the normal order.Question 6: Do you test all your goods before delivery? Answer: Yes, we have 100% test before delivery.Question 7: How do you make our business longterm and good relationship? Answer: Firstly, we provide good quality products with competitive price, to ensure our customer's benefit; Secondly, we respect our customers as our friends, grow up together. THANKS AGAIN YOU CAN COME HERE