The Hammond 193GP is a D.C. filter choke from the 193 Series of enclosed and potted chassis mount chokes, rated 10 henries at 150 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 193GP is the potted version of the 193G: 10 henries at 150 mA with 103 ohms resistance and an 800 VDC maximum operating voltage, housed in the P1 potted can rather than an open-ended enclosed case.
As a potted model, the 193GP 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 193GP has a resistance of 103 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 manufacturer's short description reads 5H @ 200mA DC POTTED, while the series table, long description and part attributes list 10H at 150 mA. Weight is listed as 6 lbs in the series table and 4.3 lbs (1.95 kg) as shipping weight.
| Mounting Type | Potted chassis mount, 1/4"-20 hardware (included) |
| Mounting Style (Dimension Ref.) | P1 |
| 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 @ 150mA, 193 Series |
| Short Description | CHOKE 5H @ 200mA DC POTTED |
| Dimension A | 3.31 in |
| Dimension B | 3.88 in |
| Dimension C | 4.25 in |
| Tolerance | 15% on both inductance and resistance |
| Inductance | 10H |
| Resistance | 103 Ohms |
| D.C. Current | 150 mA |
| Insulation Class | 105C |
| Inductance Measurement | Measured at rated D.C. current |
| Maximum Operating Voltage | 800 VDC |
| UPC | 623980224572 |
| UNSPSC | 39121301 |
| Part Number | 193GP |
| Shipping Weight | 4.3 lbs (1.95 kg) |
| Weight (Series Table) | 6 lbs |
| Housing | Epoxy potted, black powder paint drawn steel housing |
| Lead Length | Minimum 8 in |
| Impregnation | Vacuum impregnated with polyurethane varnish |
| Operating Temperature Range | -40C to 65C |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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The 193GP is rated 10H at 150 mA DC, with inductance measured at rated D.C. current and a 15% tolerance on inductance and resistance.
800 VDC maximum operating voltage.
It is a potted model in the P1 style and mounts with 1/4"-20 hardware, which is included.
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.
Insulation class is 105C and the operating temperature range is -40C to 65C.
For more sizes and voltages in an open, bracket mount type, the manufacturer points to its 153-159 Series.
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