This document provides specifications for the S-35 series 35W single output switching power supply. It has 1-year warranty and protections for short circuits and overloads. It comes in 4 models with output voltages of 5V, 12V, 15V, or 24V. Key specifications include output power of 35W, voltage and current tolerance ranges, input voltage range of 85-264VAC or 240-370VDC, and operating temperature range of -10 to 60 degrees C.

1. S-35 series
35W Single output switching power supply
AC input range selected by switch
Protections:Short circuit/Over load
Cooling by free air convection
LED indicator for power on
Distribuito da:
Fixed switching frequency at 37KHz KF S.p.A.
1 year warranty Via S. Anna 88/D
41100 - Modena - Italy
www.keyfuture.com
Servizio Assistenza
Fax +39 055 3433735
service@keyfuture.com
SPECIFICATION
MODEL S-35-5 S-35-12 S-35-15 S-35-24
DC VOLTAGE 5V 12V 15V 24V
RATED CURRENT 7A 3A 2.4A 1.5A
CURRENT RANGE 0 ~ 7A 0 ~ 3A 0 ~ 2.4A 0 ~ 1.5A
RATED POWER 35W 36W 36W 36W
RIPPLE & NOISE (max.) Note.3 75mVp-p 100mVp-p 100mVp-p 100mVp-p
OUTPUT
VOLTAGE ADJ. RANGE 4.75 ~ 5.5V 10.8 ~ 13.2V 13.5 ~ 16.5V 22.6 ~ 26.4V
VOLTAGE TOLERANCE Note.2 2.0% 1.0% 1.0% 1.0%
LINE REGULATION 0.5% 0.5% 0.5% 0.5%
LOAD REGULATION 1.0% 0.5% 0.5% 0.5%
SETUP, RISE, HOLD TIME 200ms, 100ms, 30ms
VOLTAGE RANGE 85 ~ 132VAC / 170 ~ 264VAC selected by switch 240 ~ 370VDC
FREQUENCY RANGE 47 ~ 63Hz
EFFICIENCY(Typ.) 70% 76% 78% 78%
INPUT
AC CURRENT 0.8A/115VAC 0.45A/230VAC
INRUSH CURRENT(max.) COLD START 18A/115VAC 36A/230VAC
LEAKAGE CURRENT <2mA / 240VAC
105 ~ 150% of rate load
PROTECTION OVER LOAD
Protection type : Fold back current limiting, recovers automatically after fault condition is removed
WORKING TEMP., HUMIDITY -10 ~ +60 (Refer to output load derating curve), 20 ~ 90% RH
STORAGE TEMP., HUMIDITY -20 ~ +85 , 10 ~ 95% RH
ENVIRONMENT
TEMP. COEFFICIENT 0.03%/ (0 ~ 50 )
VIBRATION 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
SAFETY STANDARDS Design refer to UL1012
SAFETY & EMI CONDUCTION & RADIATION Design refer to FCC Part15 J Conduction Class B
EMC WITHSTAND VOLTAGE I/P-O/P:1.5KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE I/P-O/P, I/P-FG, O/P-FG:100M Ohms/500VDC
MTBF 435.2K hrs min. MIL-HDBK-217F (25 )
OTHERS DIMENSION 129*98*38mm (L*W*H)
PACKING 0.4Kgs/pcs, 45pcs/18Kgs/1.25CUFT
NOTE 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25 of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
File Name:S-35-SPEC 2003-07-08

2. U S PS2 3 5
- -2 series
Mechanical Specification Case No. 903 Unit:mm
122.5
7
3 .5
31
1
9 .5
2
3
3
M
2-
4
9 7 .7 5
33
8 5 .5
5
8
3 .5
4.5 73.5
129
6.5 120
9 .5
9
9
1 8 .5
3 .5
3 7 .5
3 .5
3 -M
18
3
32 77
Terminal Pin. No Assignment
Pin No. Assignment Pin No. Assignment
1 AC/L 4 DC OUTPUT -V
2 AC/N 5 DC OUTPUT +V
3 FG
Output Derating Static Characteristics (24V)
Ta=25
32 350
100 24V
OUTPUT RIPPLE (mVp-p)
28 300
OUTPUT VOLTAGE (V)
80
5V 24 250
60 20 200
12V,15V
LOAD (%)
16 150
40
12 100
20
8 50
-10 0 10 20 30 40 50 60 (VERTICAL) 80 85 90 95 100 105 110 115 120 125 130
-10 0 45 55 (HORIZONTAL) 160 170 180 190 200 210 220 230 240 250 260
AMBIENT TEMPERATURE ( ) INPUT VOLTAGE (V) 60Hz
File Name:S-35-SPEC 2003-07-08