Hammond 193MP 10H 300mA Potted DC Filter Choke, 800VDC
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Create Free Business AccountKey Features
- 10 H inductance at 300 mA rated DC current
- 63 ohm resistance; 800 VDC maximum operating voltage
- Epoxy potted black powder paint drawn steel housing, P1 style, 1/4"-20 hardware included
- Vacuum impregnated with polyurethane varnish for quiet, long-life operation
- 15% tolerance on inductance and resistance; inductance measured at rated DC
- Minimum 8 in long leads
- Insulation class 105C; operating range -40C to 65C
- RoHS and REACH compliant
The Hammond 193MP is a D.C. filter choke from the 193 Series of enclosed and potted chassis mount chokes, rated 10 henries at 300 mA DC. It is designed for high voltage power supply filtering, and is a natural fit for tube amplifier builders, audio equipment restorers and OEM engineers designing linear DC supplies.
The 193MP is the potted version of the 193M, with identical 10 henries at 300 mA, 63 ohms resistance and 800 VDC maximum operating voltage, in the P1 potted can.
As a potted model, the 193MP is epoxy potted in a black powder paint drawn steel housing and mounts with 1/4"-20 hardware, which is included. It uses the P1 mounting style, with Dimension A 3.31 in, B 3.88 in and C 4.25 in. Like every 193 Series unit it is vacuum impregnated with polyurethane varnish for quiet, long-life operation and has minimum 8 in long leads.
Electrically, the 193MP has a resistance of 63 ohms and a maximum operating voltage of 800 VDC. Inductance is measured at rated D.C. current, with a tolerance of 15% on both inductance and resistance; the unit will exhibit less inductance at slightly higher currents and more at lower currents. Insulation class is 105C and the operating temperature range is -40C to 65C. The part is RoHS and REACH compliant.
The series table lists a weight of 10.5 lbs, and the shipping weight is 5 lbs (2.27 kg).
Ideal For
- High voltage power supply filtering
- Tube audio equipment power supplies
- Tube audio equipment matching Hammond power and output transformer cases
- Chassis mount DC filter in linear power supplies
Mounting
| Mounting Type | Potted chassis mount, 1/4"-20 hardware (included) |
| Mounting Style (Dimension Ref.) | P1 |
Overview
| Style | Potted |
| Series | 193 Series (Enclosed & Potted Chassis Mount) |
| Product Type | D.C. Filter Choke |
| Long Description | DC Filter Choke, Potted chassis mount, inductance 10H @ 300mA, 193 Series |
| Short Description | CHOKE 10H @ 300mA DC POTTED |
Dimensions
| Dimension A | 3.31 in |
| Dimension B | 3.88 in |
| Dimension C | 4.25 in |
Electrical
| Tolerance | 15% on both inductance and resistance |
| Inductance | 10H |
| Resistance | 63 Ohms |
| DC Current | 300 mA |
| Insulation Class | 105C |
| Inductance Measurement | Measured at rated D.C. current |
| Maximum Operating Voltage | 800 VDC |
Identifiers
| UPC | 623980252292 |
| UNSPSC | 39121301 |
| Part Number | 193MP |
Packaging & Shipping
| Shipping Weight | 5 lbs (2.27 kg) |
| Weight (Series Table) | 10.5 lbs |
Construction & Finish
| Housing | Epoxy potted, black powder paint drawn steel housing |
| Lead Length | Minimum 8 in |
| Impregnation | Vacuum impregnated with polyurethane varnish |
Environmental & Protection
| Operating Temperature Range | -40C to 65C |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What are the inductance and current ratings of the 193MP?▾
The 193MP is rated 10H at 300 mA DC, with inductance measured at rated D.C. current and a 15% tolerance on inductance and resistance.
What is the maximum operating voltage of the 193MP?▾
800 VDC maximum operating voltage.
How is the 193MP mounted?▾
It is a potted model in the P1 style and mounts with 1/4"-20 hardware, which is included.
Why does my measured inductance differ from the rating?▾
Inductance is specified at rated D.C. current; units exhibit less inductance at slightly higher currents or more at lower currents. The manufacturer notes that proper henry testing requires an LCR meter in junction with a 25A power supply that allows DC bias and a higher applied AC drive voltage.
What temperature and insulation ratings does the 193MP have?▾
Insulation class is 105C and the operating temperature range is -40C to 65C.
Are open bracket-mount versions available?▾
For more sizes and voltages in an open, bracket mount type, the manufacturer points to its 153-159 Series.
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