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SMD Switching Diode SMD Diodes Specialist CDSQR4148 (RoHS Device) High Speed Features 0402(1005) Designed for mounting on small surface. Extremely thin/leadless package. High mounting capability, strong surge withstand, high reliability. 0.041(1.05) 0.037(0.95) 0.026(0.65) 0.022(0.55) Mechanical data Case: 0402(1005) standard package, molded plastic. Terminals: Gold plated, solderable per MIL-STD-750,method 2026. Marking Code: Cathode band & S3 Mounting position: Any Weight: 0.001 gram(approx.). 0.020(0.50) Typ. 0.012(0.30) Typ. 0.022(0.55) 0.018(0.45) Dimensions in inches and (millimeter) Maximum Rating (at TA=25 C unless otherwise noted) O Parameter Repetitive peak reverse voltage Reverse voltage Average forward current Forward current,surge peak Repetitive peak forward current Power Dissipation Storage temperature Junction temperature TP = 1uS TP = 1mS Conditions Symbol Min Typ Max Unit VRRM VR IO IFSM IFRM PD TSTG Tj -40 4 1 300 125 +125 +125 100 75 150 V V mA A mA mW O C C O Electrical Characteristics (at TA=25 C unless otherwise noted) O Parameter Forward voltage Reverse current Capacitance between terminals Reverse recovery time VR = 20 V VR = 75 V Conditions IF = 50 mA DC Symbol Min Typ Max Unit VF IR CT Trr 1.0 25 2.5 4 4 V nA uA PF f = 1 MHZ,and 0VDC reverse voltage IF = IR = 10 mA, RL =100 ohms, Irr = 1mA nS REV:B QW-A0034 Page 1 Comchip Technology CO., LTD. SMD Switching Diode SMD Diodes Specialist RATING AND CHARACTERISTIC CURVES (CDSQR4148) Fig. 1 - Forward characteristics 1000 10u Fig. 2 - Reverse characteristics 125 C O Reverse current ( A ) Forward current (mA ) 100 1u 10 100n 75 C O 1 O 10n 25 C 1n O C O C 0.1 C -25 O C 125 75 25 O 0.01 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0.1n 0 10 20 30 -25 C 40 50 60 70 80 90 100 O Forward voltage (V) Reverse voltage (V) Fig. 3 - Capacitance between terminals characteristics Capacitance between terminals : (pF) 5.0 Fig. 4 - Current derating curve Average forward current ( % ) f=1MHz Ta = 25 C O Mounting on glass epoxy PCBs 100 4.0 80 3.0 60 2.0 40 1.0 20 0 0 5 10 15 20 25 30 35 0 0 25 50 75 100 125 150 Reverse voltage : (V) Ambient temperature ( C) REV:B QW-A0034 Page 2 Comchip Technology CO., LTD. SMD Switching Diode SMD Diodes Specialist Reel Taping Specification P0 P1 d Index hole E T F B Polarity W C P A 12 0 o D2 D1 D W1 Trailer ....... ....... 10 pitches (min) Device ....... ....... ....... ....... Leader ....... ....... 10 pitches (min) End Start Direction of Feed SYMBOL A 0.75 0.10 0.026 0.004 B 1.15 0.10 0.045 0.004 C 0.60 0.10 0.024 0.004 d 1.55 0.10 0.061 0.004 D 178 1 7.008 0.04 D1 60.0 MIN. 2.362 MIN. D2 13.0 0.20 0.512 0.008 QR/0402 (mm) (inch) SYMBOL E 1.75 0.10 0.069 0.004 F 3.50 0.05 0.138 0.002 P 4.00 0.10 0.157 0.004 P0 4.00 0.10 0.157 0.004 P1 2.00 0.10 0.079 0.004 T 0.22 0.05 0.009 0.002 W 8.00 0.20 0.315 0.008 W1 13.5 MAX. 0.531 MAX. QR/0402 (mm) (inch) REV:B QW-A0034 Page 3 Comchip Technology CO., LTD. SMD Switching Diode SMD Diodes Specialist Marking Code Part Number CDSQR4148 Marking Code S3 S3 Suggested PAD Layout QR/0402 SIZE (mm) A B C D E 0.750 0.500 0.700 1.250 0.250 (inch) 0.030 0.020 C D A E 0.028 0.049 0.010 B Standard Package Qty per Reel Case Type (Pcs) QR/0402 5000 Reel Size (inch) 7 REV:B QW-A0034 Page 4 Comchip Technology CO., LTD. |
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