Hammond 1539M08 1000uH 1.3A EMI/RFI Choke, Ferrite Bobbin Core

The 1539M08 is an EMI/RFI choke from the 1539 series, described by the manufacturer as a heavy duty RF hash choke. It is rated 1000 uH (1 mH) +/- 10% with a maximum DC current of 1.3 A, making it a practical choice for electronics designers and OEM engineers building filtering circuits or energy storage inductors.

The 1539M08 brings 1000 uH (1 mH) to the compact 0.83 in by 0.91 in outline, rated 1.3 A DC with 0.801 ohms maximum DC resistance. Other 1000 uH values on the 1539 specification sheet are 1539M17 (2.5 A), 1539M23 (3.5 A) and 1539M29 (4.4 A), so compare current rating and body size when choosing.

The choke is built on a high saturation flux density ferrite bobbin core. It has 1 in long leads, tinned to within 1/8 in of the body. Maximum DC resistance is 0.801 ohms and the minimum Fo is 0.7 MHz.

• Inductance: 1000 uH +/- 10%
• Fo minimum: 0.7 MHz
• Maximum DC resistance: 0.801 ohms
• Maximum DC current: 1.3 A
• Maximum Dim. A: 0.83 in (21 mm); maximum Dim. B: 0.91 in (23 mm)
• Typical Dim. C: 0.66 in (17 mm); typical Dim. D: 0.04 in (1 mm)

Inductance for the 1539 series is measured at 1 kHz with 0 A DC current, and typical inductance change is less than 5% at twice rated current. The 1539M08 is RoHS and REACH compliant and has a shipping weight of 0.1 lbs (0.05 kg).