The 1539M09 is an EMI/RFI choke from the 1539 series, described by the manufacturer as a heavy duty RF hash choke. It is rated 2500 uH +/- 10% with a maximum DC current of 0.85 A, making it a practical choice for electronics designers and OEM engineers building filtering circuits or energy storage inductors.
The 1539M09 is the highest-inductance part in the compact 0.83 in by 0.91 in group at 2500 uH, and has the lowest DC current rating (0.85 A) in the 1539 series. Other 2500 uH values on the 1539 specification sheet are 1539M18 (1.6 A), 1539M24 (2.2 A) and 1539M30 (2.8 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 2.04 ohms and the minimum Fo is 0.43 MHz.
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 1539M09 is RoHS and REACH compliant and has a shipping weight of 0.1 lbs (0.05 kg).
| Core | High saturation flux density ferrite bobbins |
| Series | 1539 Series |
| Description | RF Choke, heavy duty hash choke |
| Typical Use | Filtering or energy storage inductors |
| Product Type | EMI/RFI Choke (RF Choke) |
| Dim. A (Maximum) | 0.83 in (21 mm) |
| Dim. B (Maximum) | 0.91 in (23 mm) |
| Dim. C (Typical) | 0.71 in (18 mm) |
| Dim. D (Typical) | 0.04 in (1 mm) |
| Fo Min. | 0.43 MHz |
| Inductance (L) | 2500 uH +/- 10% |
| Inductance Change | Typically less than 5% at twice rated current |
| DC Current (I - D.C. Max) | 0.85 A |
| Inductance Test Condition | Measured at 1 kHz with 0 A DC current |
| DC Resistance (R - D.C. Max) | 2.04 ohms |
| UPC | 623980300290 |
| UNSPSC | 39121301 |
| Part Number | 1539M09 |
| Shipping Weight | 0.1 lbs (0.05 kg) |
| Leads | 1" long, tinned to within 1/8" of body |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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The 1539M09 is rated 2500 uH +/- 10% with a maximum DC current of 0.85 A and a maximum DC resistance of 2.04 ohms.
Inductance for the 1539 series is measured at 1 kHz with 0 A DC current. Typical inductance change is less than 5% at twice the rated current.
The 1539M09 is listed at 0.43 MHz Fo minimum.
The series table lists a maximum Dim. A of 0.83 in (21 mm), maximum Dim. B of 0.91 in (23 mm), typical Dim. C of 0.71 in (18 mm) and typical Dim. D of 0.04 in (1 mm). The leads are 1 in long.
Yes. The 1539M09 is listed as both RoHS compliant and REACH compliant.
Yes. 1539M18 is rated 1.6 A, 1539M24 is rated 2.2 A, 1539M30 is rated 2.8 A, compared with 0.85 A for the 1539M09.
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