Hammond 1539M20 100uH 9.8A EMI/RFI Choke, Ferrite Bobbin Core
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Create Free Business AccountKey Features
- 100 uH +/- 10% inductance, measured at 1 kHz with 0 A DC
- 9.8 A maximum DC current rating
- 0.025 ohms maximum DC resistance
- 2 MHz minimum Fo
- High saturation flux density ferrite bobbin core
- 1 in long leads, tinned to within 1/8 in of body
- Typical inductance change under 5% at twice rated current
- RoHS and REACH compliant
The 1539M20 is an EMI/RFI choke from the 1539 series, described by the manufacturer as a heavy duty RF hash choke. It is rated 100 uH +/- 10% with a maximum DC current of 9.8 A, making it a practical choice for electronics designers and OEM engineers building filtering circuits or energy storage inductors.
The 1539M20 provides 100 uH at 9.8 A on the 1.50 in by 1.11 in maximum outline, with 0.025 ohms maximum DC resistance. Other 100 uH values on the 1539 specification sheet are 1539M05 (4.5 A), 1539M14 (7 A) and 1539M26 (14 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 0.025 ohms and the minimum Fo is 2 MHz.
- Inductance: 100 uH +/- 10%
- Fo minimum: 2 MHz
- Maximum DC resistance: 0.025 ohms
- Maximum DC current: 9.8 A
- Maximum Dim. A: 1.50 in (38 mm); maximum Dim. B: 1.11 in (28 mm)
- Typical Dim. C: 1.12 in (28 mm); typical Dim. D: 0.07 in (2 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 1539M20 is RoHS and REACH compliant and has a shipping weight of 0.3 lbs (0.14 kg).
Ideal For
- EMI/RFI noise filtering
- RF hash suppression
- Energy storage inductor
- DC power line filtering
Overview
| 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) |
Dimensions
| Dim. A (Maximum) | 1.50 in (38 mm) |
| Dim. B (Maximum) | 1.11 in (28 mm) |
| Dim. C (Typical) | 1.12 in (28 mm) |
| Dim. D (Typical) | 0.07 in (2 mm) |
Electrical
| Fo Min. | 2 MHz |
| Inductance (L) | 100 uH +/- 10% |
| Inductance Change | Typically less than 5% at twice rated current |
| DC Current (I - DC Max) | 9.8 A |
| Inductance Test Condition | Measured at 1 kHz with 0 A DC current |
| DC Resistance (R - DC Max) | 0.025 ohms |
Identifiers
| UPC | 623980300429 |
| UNSPSC | 39121301 |
| Part Number | 1539M20 |
Packaging & Shipping
| Shipping Weight | 0.3 lbs (0.14 kg) |
Construction & Finish
| Leads | 1" long, tinned to within 1/8" of body |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What is the inductance and current rating of the 1539M20?▾
The 1539M20 is rated 100 uH +/- 10% with a maximum DC current of 9.8 A and a maximum DC resistance of 0.025 ohms.
How is the inductance measured, and how stable is it under load?▾
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.
What is the minimum Fo of the 1539M20?▾
The 1539M20 is listed at 2 MHz Fo minimum.
How big is the 1539M20?▾
The series table lists a maximum Dim. A of 1.50 in (38 mm), maximum Dim. B of 1.11 in (28 mm), typical Dim. C of 1.12 in (28 mm) and typical Dim. D of 0.07 in (2 mm). The leads are 1 in long.
Is it RoHS and REACH compliant?▾
Yes. The 1539M20 is listed as both RoHS compliant and REACH compliant.
Are there other 100 uH chokes in the 1539 series?▾
Yes. 1539M05 is rated 4.5 A, 1539M14 is rated 7 A, 1539M26 is rated 14 A, compared with 9.8 A for the 1539M20.
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