Strobe Light Transformer (CMS8D series) ■ Features ◎ Compact size, surface mount transformer. ◎ High current. ◎ Low leakage Inductance. ◎ Special winding technology for high reliability. ◎ Storage temperature range: -40℃~+85℃ ◎ Operating temperature range: -40℃~+85℃ (including coil’s self-heat). ◎ RoHS Compliance. ■ Applications ◎ Step up transformer for strobe light of Digital Single-lens Reflex Camera. ◎ IC control strobe light condenser charge mode compliance. ■ Typical Evaluation Circuit T1 1:10 VTRANS C3 56µF C2 10µF VCC 12V VCC C1 10µF VTRANS RVOUT 100k 4, 5 D1 VOUT 300V 1 • • 60.4k 6, 7 + C4 100µF 10 43k DONE RDCM LT3750 OFF ON CHARGE GATE M1 SOURCE GND RBG 25mΩ 2.49k 33pF 3750 TA02a D1: DIODES INC. MURS160 M1: PHILIPS PHT6NQ10T T1: SUMIDA CMS8D75 ※ Visit http://www.sumida.com for more information 1 Strobe Light Transformer (CMS8D series) ■Dimensions ■Land pattern 1.4±0.2 （5.7） 1.4±0.2 0.5 ±0.2 6.0 MAX 1.7 ±0.2 CMS8D57 8.5±0.5 1.7 ±0.2 1.7 8.5 ±0.5 1.7 0.9 4.9 9.5 CMS8D75 （0.85） 8.5±0.5 5.7±0.5 9.5 1.7 1.7 1.7 1.7 9.0 Max. 0.5 4.9 0.9 8.0 Max. 9.0 Max. ■Electric characteristics specification (Typical). Type Inductance (µH)(6-1) 100kHz/1V Inductance (µH)(3-4) 100kHz/1V CMS8D57 1100±20% 10.0±20% CMS8D75 10.5±20% 990(Ref.) D.C.R. (Ω) (6-1) D.C.R. (mΩ) (3-4) DC superposition Permission current(3-4)(A) ※1 12.6±20% 55.0±20% 2.5 @charge capacity 400µF Max. 58.0±20% 4.0@charge capacity 600µF Max. 18.7(Ref.) ※1 DC superposition permission current : this indicates the value of current at which the Inductance decreases to 80% of its initial value at DC superposition ※ Visit http://www.sumida.com for more information 2 Strobe Light Transformer (CMS8D series) ■ Recommendation reflow condition T( ℃) Heat Endurance Test 300 T( ℃) 260℃ 250 300 230℃ 200 200 60 150 100 100 50 0 50 0 120 60 180 240 245 ℃ PEAK 230 ℃ 250 10 150 0 Temperature Chart 300 T( s) 40s 170±10℃、60 ~ 120s 0 60 180 120 300 T(s) 240 ■ Packaging with embossed tape and Reel H D A E F 1. 5 4.0 2.0 C B G ※ Visit http://www.sumida.com for more information. 3