Hammond 1538M23 27uH 15A EMI/RFI Choke, Ferrite Rod Core
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Create Free Business AccountKey Features
- 27 uH +/- 10% inductance, measured at 1 kHz with 0 A DC
- 15 A maximum DC current rating
- 0.01 ohms maximum DC resistance
- 6.4 MHz self-resonant frequency
- High saturation flux density ferrite rod
- 1 in long leads, tinned to within 1/8 in of body
- Typical inductance change under 5% at twice rated current
- Ambient temperature range -60 C to +85 C
The 1538M23 is an EMI/RFI choke from the 1538 series, described by the manufacturer as a heavy duty RF hash choke. It is rated 27 uH +/- 10% with a maximum DC current of 15 A, making it a practical choice for electronics designers and OEM engineers building filtering circuits or energy storage inductors.
At 27 uH and 15 A, the 1538M23 is the highest-current 27 uH option in the 1538 series, on a 1.00 in maximum Dim. B. Other 27 uH values on the 1538 specification sheet are 1538M03 (7 A), 1538M10 (9 A) and 1538M17 (12.5 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: 27 uH +/- 10%
- Self-resonant frequency: 6.4 MHz
- Maximum DC resistance: 0.01 ohms
- Maximum DC current: 15 A
- Maximum Dim. A: 1.38 in (35 mm); maximum Dim. B: 1.00 in (25 mm)
- Typical Dim. C: 0.94 in (24 mm); typical Dim. D: 0.08 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 1538M23 is RoHS and REACH compliant and has a shipping weight of 0.1 lbs (0.05 kg).
Ideal For
- EMI/RFI noise filtering
- RF hash suppression
- Energy storage inductor
- DC power line filtering
- High-current DC filtering
Overview
| Core | High saturation flux density ferrite rods |
| Series | 1538 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) | 1.38 in (35 mm) |
| Dim. B (Maximum) | 1.00 in (25 mm) |
| Dim. C (Typical) | 0.94 in (24 mm) |
| Dim. D (Typical) | 0.08 in (2 mm) |
Electrical
| Inductance (L) | 27 uH +/- 10% |
| Inductance Change | Typically less than 5% at twice rated current |
| DC Current (I - DC Max) | 15 A |
| Inductance Test Condition | Measured at 1 kHz with 0 A DC current |
| DC Resistance (R - DC Max) | 0.01 ohms |
| Self-Resonant Frequency (SRF) | 6.4 MHz |
Identifiers
| UPC | 623980300184 |
| UNSPSC | 39121301 |
| Part Number | 1538M23 |
Packaging & Shipping
| Shipping Weight | 0.1 lbs (0.05 kg) |
Construction & Finish
| Leads | 1" long, tinned to within 1/8" of body |
Environmental & Protection
| Ambient Temperature Range | -60 C to +85 C |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What is the inductance and current rating of the 1538M23?▾
The 1538M23 is rated 27 uH +/- 10% with a maximum DC current of 15 A and a maximum DC resistance of 0.01 ohms.
How is the inductance measured, and how stable is it under load?▾
Inductance for the 1538 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 self-resonant frequency of the 1538M23?▾
The 1538M23 is listed at 6.4 MHz self-resonant frequency (SRF).
How big is the 1538M23?▾
The series table lists a maximum Dim. A of 1.38 in (35 mm), maximum Dim. B of 1.00 in (25 mm), typical Dim. C of 0.94 in (24 mm) and typical Dim. D of 0.08 in (2 mm). The leads are 1 in long.
Is it RoHS and REACH compliant?▾
Yes. The 1538M23 is listed as both RoHS compliant and REACH compliant.
What temperature range is the 1538 series rated for?▾
The 1538 series is specified for an ambient temperature range of -60 C to +85 C.
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