Preliminary Reliability Prediction Analysis For Power Supply Model: KPS10 Series 1) INTRODUCTION This analysis and prediction is based on Part Count Reliability Prediction method as specified in MILHDBK-217F. The component list is based on the schematic diagram of the power supply unit. It must be understood that reliability prediction is of an estimation and statistical nature and much dependents on the quality factory of the components being used. In addition, the ambient temp for the MTBF prediction is based on 250C. 2) RELIABILITY PREDICTION RESULT A summary of the reliability prediction is given in the following tables. 3) COMMENTS It must be noted that however, the loading is assumed to be at worst case and 100% duty cycle for all components, together with fact that the quality factors for most of the components are estimated rather conservatively. In practice, therefore, the MTBF (hrs) can be expected to be higher than the calculated figures.

LAMBDA KPS10Series

MTBF CALCULATIONS KPS10-3R3 CAT 6.1 6.1 6.1 6.1 6.1 6.1 6.4 6.11 6.11

TYPE Diode, General Purpose Diode, Schottky Diode, Schottky Diode, Fast Diode, Zener Voltage Regulator Transistor MOSFET Optocoupler Light Emitting Diode

9.2

Resistor film or glaze

9.2 9.8 9.9 10.11 10.14 10.14 10.14 10.14 10.14 11.1 11.1 16.1 22.1 17.1 17.1

Resistor film or glaze Resistor Thermistor Resistor Variable Capacitor ceramic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Transformer power Transformer filter Circuit Board Fuses Joint hand soldered Joint machine soldered Component Count =

Q'ty 1 1 2 1 3 1 1 1 1

Designator D6 D5 D11,D12 BR1 ZD1,ZD2,ZD3 IC3 Q1 IC2 LED R1,R5,R11,R12,R13,R14, 10 R15,R16A,R16B,R17 4 R2A,R2B,R2C,R2D 2 TH1,Z1 1 VR1 4 CY1,C6,C14,C15 1 C1 1 C2 1 C3 2 C11,C12 1 C13 1 T1 2 L1,L2 1 PCB 1 F1 2 PIN 99 46

λp 0.01215 0.00148 0.00959 0.02049 0.01100 0.01100 0.13200 0.07150 0.00127

λ(λp*Q'ty) 0.01215 0.00148 0.01919 0.02049 0.03300 0.01100 0.13200 0.07150 0.00127

% 0.98 0.12 1.55 1.65 2.66 0.89 10.66 5.77 0.10

0.00836

0.08360

6.75

0.00920 0.03678 2.97 0.06500 0.13000 10.49 0.04787 0.04787 3.86 0.01633 0.06534 5.27 0.02371 0.02371 1.91 0.03131 0.03131 2.53 0.07407 0.07407 5.98 0.12543 0.25085 20.25 0.10815 0.10815 8.73 0.01763 0.01763 1.42 0.01763 0.03526 2.85 0.00780 0.00780 0.63 0.01000 0.01000 0.81 0.00028 0.00056 0.05 0.00014 0.01366 1.10 Total FR = 1.23869 MTBF = 807,307 Hours MTBF=(1/Failure Rate (FR))*10^6 Hours

LAMBDA KPS10Series

MTBF CALCULATIONS KPS10-5 CAT 6.1 6.1 6.1 6.1 6.1 6.1 6.4 6.11 6.11

TYPE Diode,General Diode, Schottky Diode, Schottky Diode, Fast Diode, Zener Voltage Regulator Transistor MOSFET Optocupler Light Emitting Diode

9.2

Resistor film or glaze

9.2 9.8 9.9 10.11 10.14 10.14 10.14 10.14 10.14 11.1 11.1 16.1 22.1 17.1 17.1

Resistor film or glaze Resistor Thermistor Resistor Variable Capacitor ceramic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Transformer power Transformer filter Circuit Board Fuses Joint hand soldered Joint machine soldered Component Count =

Q'ty 1 1 2 1 3 1 1 1 1

Designator D6 D5 D11,D12 BR1 ZD1,ZD2,ZD3 IC3 Q1 IC2 LED R1,R5,R11,R12,R13,R14, 10 R15,R16A,R16B,R17 4 R2A,R2B,R2C,R2D 2 TH1,Z1 1 VR1 4 CY1,C6,C14,C15 1 C1 1 C2 1 C3 2 C11,C12 1 C13 1 T1 2 L1,L2 1 PCB 1 F1 2 PIN 99 46

λp 0.01215 0.00148 0.00959 0.02049 0.01100 0.01100 0.13200 0.07150 0.00127

λ(λp*Q'ty) 0.01215 0.00148 0.01919 0.02049 0.03300 0.01100 0.13200 0.07150 0.00127

% 0.98 0.12 1.54 1.65 2.66 0.89 10.63 5.76 0.10

0.00836

0.08360

6.73

0.00920 0.03678 2.96 0.06500 0.13000 10.47 0.04787 0.04787 3.85 0.01633 0.06534 5.26 0.02371 0.02371 1.91 0.03131 0.03131 2.52 0.06461 0.06461 5.20 0.13104 0.26207 21.10 0.10994 0.10994 8.85 0.01763 0.01763 1.42 0.01763 0.03526 2.84 0.00780 0.00780 0.63 0.01000 0.01000 0.81 0.00028 0.00056 0.05 0.00014 0.01366 1.10 Total FR = 1.24223 MTBF = 805,004 Hours MTBF=(1/Failure Rate (FR))*10^6 Hours

LAMBDA KPS10Series

MTBF CALCULATIONS KPS10-12 CAT 6.1 6.1 6.1 6.1 6.1 6.1 6.4 6.11 6.11

TYPE Diode,General Diode, Schottky Diode, Schottky Diode, Fast Diode, Zener Voltage Regulator Transistor MOSFET Optocupler Light Emitting Diode

9.2

Resistor film or glaze

9.2 9.8 9.9 10.11 10.14 10.14 10.14 10.14 10.14 11.1 11.1 16.1 22.1 17.1 17.1

Resistor film or glaze Resistor Thermistor Resistor Variable Capacitor ceramic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Transformer power Transformer filter Circuit Board Fuses Joint hand soldered Joint machine soldered Component Count =

Q'ty 1 1 1 1 3 1 1 1 1

Designator D6 D5 D12 BR1 ZD1,ZD2,ZD3 IC3 Q1 IC2 LED R1,R5,R11,R12,R13,R14, 10 R15,R16A,R16B,R17 4 R2A,R2B,R2C,R2D 2 TH1,Z1 1 VR1 4 CY1,C6,C14,C15 1 C1 1 C2 1 C3 2 C11,C12 1 C13 1 T1 2 L1,L2 1 PCB 1 F1 2 PIN 97 45

λp 0.01215 0.00148 0.00959 0.02049 0.01100 0.01100 0.13200 0.07150 0.00127

λ(λp*Q'ty) 0.01215 0.00148 0.00959 0.02049 0.03300 0.01100 0.13200 0.07150 0.00127

% 0.84 0.10 0.66 1.42 2.28 0.76 9.12 4.94 0.09

0.00837

0.08365

5.78

0.00920 0.03681 2.54 0.06500 0.13000 8.98 0.04787 0.04787 3.31 0.01633 0.06534 4.51 0.02371 0.02371 1.64 0.03131 0.03131 2.16 0.07407 0.07407 5.12 0.21781 0.43562 30.09 0.14206 0.14206 9.81 0.01763 0.01763 1.22 0.01763 0.03526 2.44 0.00780 0.00780 0.54 0.01000 0.01000 0.69 0.00028 0.00056 0.04 0.00014 0.01339 0.92 Total FR = 1.44757 MTBF = 690,815 Hours MTBF=(1/Failure Rate (FR))*10^6 Hours

LAMBDA KPS10Series

MTBF CALCULATIONS KPS10-15 CAT 6.1 6.1 6.1 6.1 6.1 6.1 6.4 6.11 6.11

TYPE Diode, General Purpose Diode, Schottky Diode, Schottky Diode, Fast Diode, Zener Voltage Regulator Transistor MOSFET Optocoupler Light Emitting Diode

9.2

Resistor film or glaze

9.2 9.8 9.9 10.11 10.14 10.14 10.14 10.14 10.14 11.1 11.1 16.1 22.1 17.1 17.1

Resistor film or glaze Resistor Thermistor Resistor Variable Capacitor ceramic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Transformer power Transformer filter Circuit Board Fuses Joint hand soldered Joint machine soldered Component Count =

Q'ty 1 1 1 1 3 1 1 1 1

Designator D6 D5 D12 BR1 ZD1,ZD2,ZD3 IC3 Q1 IC2 LED R1,R5,R11,R12,R13,R14, 10 R15,R16A,R16B,R17 4 R2A,R2B,R2C,R2D 2 TH1,Z1 1 VR1 4 CY1,C6,C14,C15 1 C1 1 C2 1 C3 2 C11,C12 1 C13 1 T1 2 L1,L2 1 PCB 1 F1 2 PIN 97 45

λp 0.01215 0.00148 0.00959 0.02049 0.01100 0.01100 0.13200 0.07150 0.00127

λ(λp*Q'ty) 0.01215 0.00148 0.00959 0.02049 0.03300 0.01100 0.13200 0.07150 0.00127

% 0.73 0.09 0.57 1.22 1.97 0.66 7.88 4.27 0.08

0.00837

0.08365

4.99

0.00920 0.03681 2.20 0.06500 0.13000 7.76 0.04787 0.04787 2.86 0.01633 0.06534 3.90 0.02371 0.02371 1.42 0.03131 0.03131 1.87 0.07407 0.07407 4.42 0.31525 0.63050 37.63 0.17508 0.17508 10.45 0.01763 0.01763 1.05 0.01763 0.03526 2.10 0.00780 0.00780 0.47 0.01000 0.01000 0.60 0.00028 0.00056 0.03 0.00014 0.01339 0.80 Total FR = 1.67547 MTBF = 596,849 Hours MTBF=(1/Failure Rate (FR))*10^6 Hours

LAMBDA KPS10Series

MTBF CALCULATIONS KPS10-24 CAT 6.1 6.1 6.1 6.1 6.1 6.1 6.4 6.11 6.11

TYPE Diode, General Purpose Diode, Schottky Diode, Schottky Diode, Fast Diode, Zener Voltage Regulator Transistor MOSFET Optocoupler Light Emitting Diode

9.2

Resistor film or glaze

9.2 9.8 9.9 10.11 10.14 10.14 10.14 10.14 10.14 11.1 11.1 16.1 22.1 17.1 17.1

Resistor film or glaze Resistor Thermistor Resistor Variable Capacitor ceramic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Capacitor electrolytic Transformer power Transformer filter Circuit Board Fuses Joint hand soldered Joint machine soldered Component Count =

Q'ty 1 1 1 1 3 1 1 1 1

Designator D6 D5 D12 BR1 ZD1,ZD2,ZD3 IC3 Q1 IC2 LED R1,R5,R11,R12,R13,R14, 10 R15,R16A,R16B,R17 4 R2A,R2B,R2C,R2D 2 TH1,Z1 1 VR1 4 CY1,C6,C14,C15 1 C1 1 C2 1 C3 2 C11,C12 1 C13 1 T1 2 L1,L2 1 PCB 1 F1 2 PIN 97 45

λp 0.01215 0.00148 0.00959 0.02049 0.01100 0.01100 0.13200 0.07150 0.00127

λ(λp*Q'ty) 0.01215 0.00148 0.00959 0.02049 0.03300 0.01100 0.13200 0.07150 0.00127

% 0.58 0.07 0.46 0.98 1.59 0.53 6.34 3.43 0.06

0.00837

0.08365

4.02

0.00920 0.03681 1.77 0.06500 0.13000 6.24 0.04787 0.04787 2.30 0.01633 0.06534 3.14 0.02371 0.02371 1.14 0.03131 0.03131 1.50 0.07407 0.07407 3.56 0.41365 0.82730 39.74 0.38453 0.38453 18.47 0.01763 0.01763 0.85 0.01763 0.03526 1.69 0.00780 0.00780 0.37 0.01000 0.01000 0.48 0.00028 0.00056 0.03 0.00014 0.01339 0.64 Total FR = 2.08171 MTBF = 480,373 Hours MTBF=(1/Failure Rate (FR))*10^6 Hours

LAMBDA KPS10Series