Hammond 155G 7H 40mA Filter Choke, 400V Open Channel Mount
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Create Free Business AccountKey Features
- 7H inductance (+/- 15%) at 40 ma. rated D.C. current
- 340 ohm D.C. resistance (+/- 15%)
- 400 V DC maximum operating voltage
- Economical open bracket channel mount, C4H 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 155G is a D.C. reactor, or filter choke, from the 153-159 Series of low to medium current chokes, rated 7H (+/- 15%) at 40 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 155G gives 7H at 40 ma. with 340 ohms of resistance, rated to 400 V DC, on the C4H frame.
Electrically it offers 340 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.
Construction uses an economical open bracket channel mount. Units are vacuum impregnated with polyurethane varnish for quiet operation and long life, every unit is Hipot tested (100%) at 1,500 VAC, and leads are a minimum of 5" long.
The series table lists the C4H mounting style at A 2.38", B 1.38", C 1.38" and D 2.00" with a 0.19" mounting hole, and a unit weight of 0.3 lbs. The part page lists a shipping weight of 0.3 lbs (0.14 kg), and the 155G is RoHS and REACH compliant (UNSPSC 39121301, UPC 623980201900).
Ideal For
- 40 mA high voltage power supply filtering
- 400 V DC filter stages
- Open-bracket DC reactor
- Power supply repair and replacement
Mounting
| Mounting Style | Open bracket channel mount |
| Mounting Hole (Series Table) | 0.19" |
| Dimension Reference (Mtg. Style) | C4H |
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 7H, DC current 40 ma. |
| Short Description | CHOKE |
| Enclosed-Type Alternative | 193 Series (more sizes and voltages in enclosed-type design) |
Dimensions
| Dimension A (Series Table, C4H) | 2.38" |
| Dimension B (Series Table, C4H) | 1.38" |
| Dimension C (Series Table, C4H) | 1.38" |
| Dimension D (Series Table, C4H) | 2.00" |
Electrical
| Hipot Test | Every unit Hipot tested (100%) at 1,500 VAC |
| DC Current | 40 ma. |
| Current Dependence | Less inductance at slightly higher currents, more inductance at lower currents |
| Inductance (+/- 15%) | 7H |
| Inductance Tolerance | 15% |
| Resistance (+/- 15%) | 340 ohms |
| Resistance Tolerance | 15% |
| Inductance Measurement | Measured at rated D.C. current |
| Maximum Operating Volts DC | 400 V |
Identifiers
| UPC | 623980201900 |
| UNSPSC | 39121301 |
| Part Number | 155G |
Packaging & Shipping
| Shipping Weight | 0.3 lbs (0.14 kg) |
| Unit Weight (Series Table) | 0.3 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 155G?▾
The 155G is rated 7H (+/- 15%) at 40 ma. D.C. current, with 340 ohms (+/- 15%) of resistance.
What is the maximum operating voltage of the 155G?▾
The 155G is rated for 400 V DC maximum operating voltage.
Will the 155G hold its inductance at a different current?▾
Inductance is measured at the rated 40 ma.. The series data notes units exhibit less inductance at slightly higher currents and more inductance at lower currents.
How does the 155G mount and how big is it?▾
It uses an economical open bracket channel mount (mounting style C4H). The series table lists the C4H mounting style at A 2.38", B 1.38", C 1.38" and D 2.00" with a 0.19" mounting hole, and a unit weight of 0.3 lbs.
Is the 155G RoHS and REACH compliant?▾
Yes. The part page lists the 155G as both RoHS compliant and REACH compliant.
Is every 155G 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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