Hammond 159S 4H 225mA Filter Choke, 500VDC Channel Mount
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Create Free Business AccountKey Features
- 4H ±15% inductance at rated 225 mA DC current
- 65 ohm ±15% DC resistance; 500 VDC maximum operating voltage
- Open-bracket channel mount, mounting style C14H (A 4.03 in x C 2.63 in)
- Vacuum impregnated with polyurethane varnish for quiet operation and long life
- Class B (130°C) insulation; operating temperature -40°C to 105°C
- Every unit Hipot tested (100%) at 1,500 VAC; leads minimum 5 in long
- RoHS and REACH compliant
The 159S is a 4 henry filter choke rated for 225 mA DC and 500 VDC maximum operating voltage, for power supply designers filtering high voltage rails.
Its drawing (Rev. 0, 05/26/26) lists a 30 V, 60 Hz inductance test at 225 mA DC and a measured DCR of 60.60 ohms, with Class B (130°C) insulation and a 2500 V hipot.
Electrically, the 159S is specified at 4H ±15% with its inductance measured at the rated 225 mA DC. DC resistance is 65 ohms ±15% and the maximum operating voltage is 500 VDC. As with every choke in the 153-159 Series, it will show less inductance at slightly higher currents and more inductance at lower currents, so size it to the actual load current.
Construction follows the series' economical open-bracket channel mount, with leads at least 5 in long. Units are vacuum impregnated with polyurethane varnish for quiet operation and long life, and every unit is Hipot tested (100%) at 1,500 VAC. The part drawing adds class B (130°C) insulation, black leads, an operating temperature of -40°C to 105°C and storage from -40°C to 85°C.
Mechanically it uses mounting style C14H: the series table lists A 4.03 in, B 2.25 in, C 2.63 in and D 3.56 in with a 0.19 in mounting hole. Weight is 2.25 lb in the series table and 2.3 lbs (1.04 kg) shipping weight. The part is RoHS and REACH compliant (UNSPSC 39121301, UPC 623980204901).
Ideal For
- High voltage power supply filtering
- DC reactor for supply rails up to 500 VDC at 225 mA
- Open-bracket channel mounting in equipment chassis
- Replacement filter choke for existing 159S designs
Overview
| Series | 153-159 Series D.C. Reactors or Filter Chokes (low to medium current) |
| Description | DC reactor, filter choke, open channel mount, inductance 4H, DC current 225 ma. |
| Part Number | 159S |
| Short Description | CHOKE |
Dimensions
| Dimension A (Part Drawing) | 4.000" ±0.063 |
| Dimension B (Part Drawing) | 2.085" ±0.125 |
| Dimension C (Part Drawing) | 2.625" ±0.063 |
| Dimension D (Part Drawing) | 3.563" ±0.063 |
| Mounting Style (Dim. Ref.) | C14H |
| Mounting Hole (Series Table) | 0.19 in |
| Mounting Hole G (Part Drawing) | 0.187" ±0.015 |
| Dimension A (C14H Series Table) | 4.03 in |
| Dimension B (C14H Series Table) | 2.25 in |
| Dimension C (C14H Series Table) | 2.63 in |
| Dimension D (C14H Series Table) | 3.56 in |
Electrical
| DCR (Drawing) | 60.60 Ω ±15% @ 20°C, BLK - BLK |
| Hipot (Drawing) | 2500V, 60Hz, 1 sec (primary - secondary) |
| Inductance (±15%) | 4H |
| Resistance (±15%) | 65 ohms |
| Hipot Test (Series) | Every unit Hipot tested (100%) at 1,500 VAC |
| DC Current (Rated) | 225 ma. |
| Inductance Measurement | Measured at rated D.C. current |
| Inductance Vs. Current | Less inductance at slightly higher currents, more inductance at lower currents |
| Label Marking (Drawing) | 4H ±15%, 225mA DC, 500VDC MAX. Op. |
| Inductance Test (Drawing) | @ 30V, 60Hz, 225mA DC, BLK - BLK: 4H ±15% |
| Maximum Operating Voltage DC | 500 VDC |
| Inductance & Resistance Tolerance | 15% |
Identifiers
| UPC | 623980204901 |
| UNSPSC | 39121301 |
| Drawing Revision | Rev. 0, released 05/26/26 |
Packaging & Shipping
| Shipping Weight | 2.3 lbs (1.04 kg) |
| Weight (Part Drawing) | 2.25 lbs |
| Weight (Series Table) | 2.25 lbs |
Construction & Finish
| Leads | Minimum 5" long |
| Mounting | Economical "open bracket" channel mount |
| Insulation | Class B (130°C) insulation |
| Impregnation | Vacuum impregnated with polyurethane varnish for quiet operation and long life |
| Channel Frame Thickness | 0.030" |
Environmental & Protection
| Storage Temperature | -40°C to 85°C |
| Operating Temperature | -40°C to 105°C |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
| Drawing Compliance Note | RoHS & REACH Compliant |
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Frequently Asked Questions
What are the inductance and current ratings of the 159S?▾
The 159S is rated 4H ±15% at 225 mA DC, and its inductance is measured at that rated DC current.
What voltage can the 159S be used at?▾
The listed maximum operating voltage is 500 VDC.
How is the choke mounted?▾
It uses an economical open-bracket channel mount in mounting style C14H, with a 0.19 in mounting hole per the series mechanical table.
What happens if my circuit draws more or less than 225 mA?▾
Per the manufacturer, units exhibit less inductance at slightly higher currents and more inductance at lower currents.
Is the 159S RoHS compliant?▾
Yes. It is listed as both RoHS and REACH compliant.
What temperatures is the 159S rated for?▾
The part drawing gives an operating temperature of -40°C to 105°C and a storage temperature of -40°C to 85°C, with class B (130°C) insulation.
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