Hammond 197AA20 0.25mH 20A High Frequency Reactor, Screw Terminals
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Create Free Business AccountKey Features
- 0.25 mH ±15% at 20 A DC bias
- 1185.3 kHz self-resonant frequency, 6.28K ohms at SRF
- 14 mOhm DCR ±15% at 20°C
- Operating frequency 60 Hz to 10 kHz
- Aluminum base, stainless steel band, open-style screw terminals
- 2500 V RMS dielectric strength
- 2.50 x 2.00 in (64 x 51 mm) mounting hole pattern
The 197AA20 is a high frequency reactor rated 0.25 mH at 20 A DC with screw terminals, for high frequency filtering applications operating from 60 Hz to 10 kHz. Its self-resonant frequency of 1185.3 kHz is among the higher values in the 197 Series.
The drawing lists typical inductance with bias of 0.250 mH ±15% at 20 ADC, impedance at SRF of 6.28K ohms, ripple current of 20% peak-to-peak and DCR of 14 mOhm ±15% at 20°C. Dielectric strength is 2500 V RMS and temperature range is -40 to 105C. The high permeability carbonyl iron powder core is described as ideal for applications below 50 kHz. The label reads 0.250mH ±15%, 20A DC, 60Hz to 10kHz @ 10% ADC.
It is built with an aluminum base, stainless steel band and open-style terminals. Size is 3.31 x 3.05 x 2.50 in (84 x 77 x 64 mm), with a 2.50 x 2.00 in (64 x 51 mm) mounting hole pattern. The drawing and series table list 2.5 lbs; the shipping weight is 2 lbs (0.91 kg). It is marked Made in Canada and is RoHS and REACH compliant.
Ideal For
- High frequency filtering from 60 Hz to 10 kHz
- 20 A screw-terminal filter reactor
- High self-resonant frequency filter applications
Overview
| Series | 197 Series (High Frequency Reactors) |
| Product Type | High Frequency Reactor |
| Short Description | CHOKE |
| Country Of Manufacture | Made in Canada (per drawing label) |
| Performance Graph Conditions | Performance graphs @ 1.0 volt AC drive; results typical, subject to normal manufacturing and electrical tolerances |
Dimensions
| Dimension A | 3.31 in (84 mm) |
| Dimension B | 3.05 in (77 mm) |
| Dimension C | 2.50 in (64 mm) |
| Size A X B X C | 3.31 in x 3.05 in x 2.5 in (84 mm x 77 mm x 64 mm) |
| Mounting Hole Pattern | 2.50 in x 2.00 in (64 mm x 51 mm) |
Electrical
| DC Current | 20 A |
| Inductance | 0.25 mH |
| DCR Tolerance | ±15% @ 20°C |
| Ripple Current | 20% peak-to-peak |
| DC Resistance (DCR) | 14 mOhm |
| Dielectric Strength | 2500V RMS |
| Operating Frequency | 60Hz - 10kHz |
| Core Application Range | High permeability core ideal for applications <50kHz |
| Self-Resonant Frequency | 1185.3 kHz |
| Impedance @ SRF (Typical) | 6.28K Ohms |
| Inductance With Bias (Typical) | 0.250mH ±15% @ 20ADC |
Identifiers
| UPC | 623980436296 |
| UNSPSC | 39121301 |
| Part Number | 197AA20 |
Packaging & Shipping
| Shipping Weight | 2 lbs (0.91 kg) |
| Weight (Drawing) | 2.5 lbs. |
| Weight (Series Table) | 2.5 lbs |
Construction & Finish
| Terminals | Open-style terminal |
| Connection | Screw Terminals |
| Construction | Rugged construction with aluminum base and stainless steel band |
| Core Material | Carbonyl Iron Powder |
| Label Marking | INDUCTOR 197AA20, 0.250mH ±15%, 20A DC, 60Hz to 10kHz @ 10% ADC, date code |
Environmental & Protection
| Temperature Range | -40 to 105C |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What is the 197AA20 rated for?▾
0.25 mH at 20 A DC, with typical inductance with bias of 0.250 mH ±15% at 20 ADC.
What is the self-resonant frequency?▾
1185.3 kHz, with 6.28K ohms impedance at SRF.
What terminals does the 197AA20 have?▾
Screw terminals, described on the drawing as open-style terminals.
How much does the 197AA20 weigh?▾
The drawing and series table list 2.5 lbs; the shipping weight is 2 lbs (0.91 kg).
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