Hammond 1538M20 100uH 10A EMI/RFI Choke, Ferrite Rod Core

The 1538M20 is an EMI/RFI choke from the 1538 series, described by the manufacturer as a heavy duty RF hash choke. It is rated 100 uH +/- 10% with a maximum DC current of 10 A, making it a practical choice for electronics designers and OEM engineers building filtering circuits or energy storage inductors.

At 100 uH and 10 A, the 1538M20 carries the highest current of any 100 uH part in the 1538 series, on a 1.62 in maximum Dim. A. Other 100 uH values on the 1538 specification sheet are 1538M05 (4.9 A) and 1538M13 (6.8 A), so compare current rating and body size when choosing.

The choke is built on a high saturation flux density ferrite rod. It has 1 in long leads, tinned to within 1/8 in of the body. The 1538 series is specified for an ambient temperature range of -60 C to +85 C.

• Inductance: 100 uH +/- 10%
• Self-resonant frequency: 2.2 MHz
• Maximum DC resistance: 0.027 ohms
• Maximum DC current: 10 A
• Maximum Dim. A: 1.62 in (41 mm); maximum Dim. B: 0.94 in (24 mm)
• Typical Dim. C: 1.31 in (33 mm); typical Dim. D: 0.07 in (2 mm)

Inductance for the 1538 series is measured at 1 kHz with 0 A DC current, and typical inductance change is less than 5% at twice rated current. The 1538M20 is RoHS and REACH compliant and has a shipping weight of 0.1 lbs (0.05 kg).