
Hammond 193D 8H 150mA Enclosed DC Filter Choke, 600VDC
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Create Free Business AccountKey Features
- 8 H inductance at 150 mA rated DC current
- 75 ohm resistance; 600 VDC maximum operating voltage
- Enclosed 4-hole chassis mount case, X8 mounting style with .203 x .38 in slots
- 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 193D is a D.C. filter choke from the 193 Series of enclosed and potted chassis mount chokes, rated 8 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 193D offers 8 henries at 150 mA with a relatively low 75 ohm DC resistance in the enclosed X8 case.
The 193D is an enclosed, 4-hole chassis mount choke using the X8 mounting style: Dimension A 2.50 in, B 3.25 in, C 3.06 in, D 2.00 in and E 2.19 in, with .203 x .38 in mounting slots. The unit is vacuum impregnated with polyurethane varnish for quiet, long-life operation, has minimum 8 in long leads, and its case matches power transformers and tube audio output transformers.
Electrically, the 193D has a resistance of 75 ohms and a maximum operating voltage of 600 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 3.25 lbs, and the shipping weight is 3.3 lbs (1.50 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 | Enclosed, 4-hole chassis mount |
| Mounting Slot (G) | .203 x .38 in |
| Mounting Style (Dimension Ref.) | X8 |
Overview
| Style | Enclosed |
| Series | 193 Series (Enclosed & Potted Chassis Mount) |
| Product Type | D.C. Filter Choke |
| Long Description | DC Filter Choke, Enclosed chassis mount, inductance 8H @ 150mA, 193 Series |
| Short Description | CHOKE 8H @ 150mA DC |
Dimensions
| Dimension A | 2.50 in |
| Dimension B | 3.25 in |
| Dimension C | 3.06 in |
| Dimension D | 2.00 in |
| Dimension E | 2.19 in |
Electrical
| Tolerance | 15% on both inductance and resistance |
| Inductance | 8H |
| Resistance | 75 Ohms |
| DC Current | 150 mA |
| Insulation Class | 105C |
| Inductance Measurement | Measured at rated D.C. current |
| Maximum Operating Voltage | 600 VDC |
Identifiers
| UPC | 623980258904 |
| UNSPSC | 39121301 |
| Part Number | 193D |
Packaging & Shipping
| Shipping Weight | 3.3 lbs (1.50 kg) |
| Weight (Series Table) | 3.25 lbs |
Construction & Finish
| 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 193D?▾
The 193D is rated 8H at 150 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 193D?▾
600 VDC maximum operating voltage.
How is the 193D mounted?▾
It is an enclosed, 4-hole chassis mount choke in the X8 mounting style with .203 x .38 in mounting slots.
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 193D 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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