Toll Free Engineering Hot Line: 800.645.5828 • P: 321.637.1000 • F: 321.637.1600
595 International Place, Rockledge, FL 32955-4200 USA • www.rencousa.com • ISO 9001 Certified
RENCO ELECTRONICS INC.
REFERENCE DESIGNS
NATIONAL SEMICONDUCTOR
• Useshighsaturationfluxdensitymaterialidealforuse
 inswitchingregulatedpowersuppliesandsmall-sized
 currentchokes
• Inductancerangesfrom47µHto2200µHwithDCsaturation
 currentsupto20A
FEATURES & APPLICATIONSDESCRIPTION
• HighCurrentChokes
ENVIRONMENTAL DATA
• Storagetemperaturerange:
-55°Cto+130°C
• Operatingtemperaturerange:
-40°Cto+130°C
PACKAGING INFORMATION
• ContactCustomerSupport800.645.5828
SIMPLE SWITCHER APPLICATIONS
Verify operation with sample in actual circuit. Order samples at www.rencousa.com.
SCHEMATICFRONT VIEW SIDE VIEW
D
A
B
C
E
F
G
H
ST
FN
CLEARANCE
HOLE FOR
4/40 SCREW
REFERENCE DESIGNS
Toll Free Engineering Hot Line: 800.645.5828 • P: 321.637.1000 • F: 321.637.1600
595 International Place, Rockledge, FL 32955-4200 USA • www.rencousa.com • ISO 9001 Certified
RENCO ELECTRONICS INC.
NATIONAL SEMICONDUCTOR SIMPLE SWITCHER APPLICATIONS
PART NUMBER A (MAX.) B (MAX.) C (REF.) D (MIN.)
RL-1954 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1956 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1957 1.100 (27.94) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1958 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1959 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1960 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1961 1.100 (27.94) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1962 1.100 (27.94) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1963 1.100 (27.94) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-1964 1.600 (40.64) 1.100 (27.94) 0.290 (7.37) 0.5 (12.7)
RL-1965 1.600 (40.64) 1.100 (27.94) 0.290 (7.37) 0.5 (12.7)
RL-2442 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-2443 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-2444 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-2445 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-2446 1.100 (27.94) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-2447 1.100 (27.94) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
RL-2448 0.825 (20.96) 0.850 (21.59) 0.195 (4.95) 0.5 (12.7)
MECHANICAL DIMENSIONS
U.S. Standard (mm)
PART NUMBER E F G H
RL-1954 0.593 (15.06) 0.032 (0.813) 0.015 (0.38) 0.05 (1.27)
RL-1956 0.656 (16.66) 0.036 (0.914) 0.015 (0.38) 0.05 (1.27)
RL-1957 0.750 (19.05) 0.052 (1.320) 0.015 (0.38) 0.05 (1.27)
RL-1958 0.590 (14.97) 0.016 (0.406) 0.015 (0.38) 0.05 (1.27)
RL-1959 0.590 (14.97) 0.018 (0.457) 0.015 (0.38) 0.05 (1.27)
RL-1960 0.590 (14.97) 0.023 (0.584) 0.015 (0.38) 0.05 (1.27)
RL-1961 0.750 (19.05) 0.032 (0.813) 0.015 (0.38) 0.05 (1.27)
RL-1962 0.812 (20.62) 0.036 (0.914) 0.015 (0.38) 0.05 (1.27)
RL-1963 0.781 (19.84) 0.042 (1.830) 0.015 (0.38) 0.05 (1.27)
RL-1964 1.125 (28.59) 0.058 (1.470) 0.015 (0.38) 0.05 (1.27)
RL-1965 1.140 (28.97) 0.065 (1.650) 0.015 (0.38) 0.05 (1.27)
RL-2442 0.625 (15.88) 0.042 (1.830) 0.015 (0.38) 0.05 (1.27)
RL-2443 0.656 (16.66) 0.036 (0.914) 0.015 (0.38) 0.05 (1.27)
RL-2444 0.593 (15.06) 0.032 (0.813) 0.015 (0.38) 0.05 (1.27)
RL-2445 0.593 (15.06) 0.032 (0.813) 0.015 (0.38) 0.05 (1.27)
RL-2446 0.781 (19.84) 0.042 (1.830) 0.015 (0.38) 0.05 (1.27)
RL-2447 0.812 (20.62) 0.036 (0.914) 0.015 (0.38) 0.05 (1.27)
RL-2448 0.590 (14.97) 0.016 (0.406) 0.015 (0.38) 0.05 (1.27)
U.S. Standard (mm)
PART WEIGHT
27.0g (0.95oz)
23.9g (0.84oz)
43.8g (1.54oz)
21.2g (0.74oz)
24.6g (0.87oz)
28.6g (1.00oz)
46.8g (1.65oz)
44.1g (1.56oz)
42.5g (1.50oz)
110.1g (3.90oz)
111.2g (3.92oz)
22.1.0g (0.78oz)
25.4g (0.90oz)
24.4g (0.86oz)
26.5g (0.93oz)
43.4g (1.53oz)
47.5g (1.65oz)
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