Hammond 157J 10H 65mA DC Filter Choke, 400V Channel Mount
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Create Free Business AccountKey Features
- 10H inductance (+/- 15%) at 65 ma. rated D.C. current
- 205 ohm D.C. resistance (+/- 15%)
- 400 V DC maximum operating voltage
- Economical open bracket channel mount, C9H mounting style
- Every unit Hipot tested (100%) at 1,500 VAC
- Vacuum impregnated with polyurethane varnish for quiet operation and long life
- Minimum 5" long leads
- RoHS and REACH compliant
The 157J is a D.C. reactor, or filter choke, from the 153-159 Series of low to medium current chokes, rated 10H (+/- 15%) at 65 ma. D.C. current. It is intended for engineers and technicians building or repairing power supplies, and the series is described as perfect for high voltage power supply filtering. The 157J offers 10H at 65 ma. with 205 ohms of resistance and a 400 V DC maximum, on the C9H frame.
Electrically it offers 205 ohms of D.C. resistance with a 15% tolerance on both inductance and resistance, and a 400 V DC maximum operating rating. Because inductance is specified at rated current, the unit shows less inductance at slightly higher currents and more at lower ones.
The choke is built on an open bracket channel frame and vacuum impregnated with polyurethane varnish for quiet, long-life operation. Each unit is 100% Hipot tested at 1,500 VAC and supplied with leads at least 5" long.
Its drawing gives dimensions A 3.25" (82.6 mm), B 1.75" (44.5 mm), C 2" (50.8 mm) and D 2.81" (71.4 mm), with a weight of 1 lbs / 0.45 kg. The part page lists a shipping weight of 1 lbs (0.45 kg), and the 157J is RoHS and REACH compliant (UNSPSC 39121301, UPC 623980203409).
Ideal For
- 65 mA high voltage power supply filtering
- 400 V DC reactor applications
- Chassis-mounted filter chokes
- Power supply repair and replacement
Mounting
| Mounting Style | Open bracket channel mount |
| Mounting Hole (Series Table) | 0.19" |
| Dimension Reference (Mtg. Style) | C9H |
Overview
| Series | 153-159 Series D.C. Reactors or filter chokes |
| Product Type | D.C. reactor / filter choke |
| Current Class | Low to medium current |
| Long Description | DC reactor, filter choke, open channel mount, inductance 10H, DC current 65 ma. |
| Short Description | CHOKE |
| Enclosed-Type Alternative | 193 Series (more sizes and voltages in enclosed-type design) |
Dimensions
| Dimension A | 3.25” / 82.6 mm |
| Dimension B | 1.75” / 44.5 mm |
| Dimension C | 2” / 50.8 mm |
| Dimension D | 2.81” / 71.4 mm |
| Dimension G | 0.19” / 4.8 mm |
Electrical
| Hipot Test | Every unit Hipot tested (100%) at 1,500 VAC |
| DC Current | 65 ma. |
| Current Dependence | Less inductance at slightly higher currents, more inductance at lower currents |
| Inductance (+/- 15%) | 10H |
| Inductance Tolerance | 15% |
| Resistance (+/- 15%) | 205 ohms |
| Resistance Tolerance | 15% |
| Inductance Measurement | Measured at rated D.C. current |
| Maximum Operating Volts DC | 400 V |
Identifiers
| UPC | 623980203409 |
| UNSPSC | 39121301 |
| Part Number | 157J |
Packaging & Shipping
| Shipping Weight | 1 lbs (0.45 kg) |
| Weight (Drawing) | 1 lbs / 0.45 kg |
| Unit Weight (Series Table) | 1 lbs |
Construction & Finish
| Leads | Minimum 5" long leads |
| Impregnation | Vacuum impregnated with polyurethane varnish |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What are the inductance and current ratings of the 157J?▾
The 157J is rated 10H (+/- 15%) at 65 ma. D.C. current, with 205 ohms (+/- 15%) of resistance.
What is the maximum operating voltage of the 157J?▾
The 157J is rated for 400 V DC maximum operating voltage.
Will the 157J hold its inductance at a different current?▾
Inductance is measured at the rated 65 ma.. The series data notes units exhibit less inductance at slightly higher currents and more inductance at lower currents.
How does the 157J mount and how big is it?▾
It uses an economical open bracket channel mount (mounting style C9H). Its drawing gives dimensions A 3.25" (82.6 mm), B 1.75" (44.5 mm), C 2" (50.8 mm) and D 2.81" (71.4 mm), with a weight of 1 lbs / 0.45 kg.
Is the 157J RoHS and REACH compliant?▾
Yes. The part page lists the 157J as both RoHS compliant and REACH compliant.
Is every 157J tested?▾
Yes. Every unit in the series is Hipot tested (100%) at 1,500 VAC, and units are vacuum impregnated with polyurethane varnish.
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