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.

• Thisseriesofpowerlinechokeshasinductancevaluesfrom

 100µHto680µHwithsaturationcurrentsavailablefrom

 0.70Ato2.79A

• High-saturationmaterialmakescoilsidealforusein

 switchingregulatedpowersupplyapplications

• Thesizeofthecoilsmakethemeasytoinstallinequipment

FEATURES & APPLICATIONSDESCRIPTION

• PowerlineChoke

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

Verify operation with sample in actual circuit. Order samples at www.rencousa.com.

SCHEMATICTOP VIEW SIDE VIEW

MECHANICAL DIMENSIONS

PART WEIGHT

2.9g (0.10oz)

1.7g (0.06oz)

U.S. Standard (mm)

PART NUMBER A (MAX.) B (MIN.) C (MAX.)

RL-1950 0.453 (11.51) 1.00 (25.40) 0.900 (22.86)

RL-1951 0.453 (11.51) 1.00 (25.40) 0.900 (22.86)

RL-1952 0.453 (11.51) 1.00 (25.40) 0.900 (22.86)

RL-1953 0.453 (11.51) 1.00 (25.40) 0.900 (22.86)

RL-1955 0.453 (11.51) 1.00 (25.40) 0.900 (22.86)

RL-3901 0.250 (6.35) 1.00 (25.40) 0.650 (16.51)

20 AWG

0.032 (0.81)

TINNED

COPPER

NATIONAL SEMICONDUCTOR

SIMPLE SWITCHER APPLICATIONS

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

Renco Part No. Inductance

(µH)

DCR Max.

(Ohms)

Isat

(A)

Irms

(A)

RL-1950

680.0 0.575 0.70 1.00

RL-1951

470.0 0.400 0.82 1.20

RL-1952

330.0 0.300 1.00 1.60

RL-1953

220.0 0.175 1.25 1.60

RL-1955

100.0 0.090 2.79 1.60

RL-3901

330.0 0.665 0.70 0.40

NOTES:

1. INDUCTANCE ±10% TESTED AT 10 kHz, 0.1 Vrms

2. ELECTRICAL SPECIFICATIONS MEASURED AT 25ºC

3. Isat - DC CURRENT THAT WILL CAUSE INDUCTANCE TO DROP BY 5%

4. Irms - CURRENT THAT CAUSES THE TEMPERATURE

TO RISE APPROX. 40ºC ABOVE AMBIENT OF 25ºC