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Potentiometer - Alpha, Audio, 3/8" Bushing image 1

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Potentiometer - Alpha, Audio, 3/8" Bushing

$1^.70

In Stock

Standard fit for most vintage American made tube amps.

For similar pots with tighter 10% tolerances, see R-V38-10TOL-XA.

SKU:

R-V38-XA

Item ID:

039698

Application:

Amp

Brand:

Alpha

Resistance:

10k, 1M, 250k, 25k, 500k

Shaft:

Taper:

Termination Style:

Type/Size:

RoHS Compliant

Accessory Items:

Dust Cover - Rubber covering for Potentiometers, black

Part Numbers
Resistance	Our Part Number	UPC/EAN
1 kΩ	R-V38-1KA	841358100512
10 kΩ	R-V38-10KA	609722122634
25 kΩ	R-V38-25KA	609722122672
100 kΩ	R-V38-100KA	609722122610
250 kΩ	R-V38-250KA	609722122658
500 kΩ	R-V38-500KA	609722123273
1 MΩ	R-V38-1MA	609722122641

Measurements by Type
Measurements by Item

Product Measurements by Type
Body Depth		11.5 mm
Body Width		24 mm
Bushing Length		6.5 mm
Bushing Thread		3/8"-32UNF
Hex Nut Thickness		2.2 mm
Hex Nut Width		12.6 mm
Insulation Resistance		＞100 MΩ at 500VDC
Life	1 MΩ version	R-V38-1MA	15,000 cycles
	1 kΩ version	R-V38-1KA	15,000 cycles
	10 kΩ version	R-V38-10KA	15,000 cycles
	25 kΩ version	R-V38-25KA	15,000 cycles
	100 kΩ version	R-V38-100KA	15,000 cycles
	250 kΩ version	R-V38-250KA	15,000 cycles
	500 kΩ version	R-V38-500KA	15,000 cycles
Manual Soldering Max Temp for 3 sec.	1 MΩ version	R-V38-1MA	350 °C
	1 kΩ version	R-V38-1KA	350 °C
	10 kΩ version	R-V38-10KA	350 °C
	25 kΩ version	R-V38-25KA	350 °C
	100 kΩ version	R-V38-100KA	300 °C
	250 kΩ version	R-V38-250KA	350 °C
	500 kΩ version	R-V38-500KA	350 °C
Max. Working Voltage		250V
Max Rotational Stopper Strength	1 MΩ version	R-V38-1MA	6Kgf
	1 kΩ version	R-V38-1KA	6Kgf
	10 kΩ version	R-V38-10KA	6Kgf
	25 kΩ version	R-V38-25KA	6Kgf
	100 kΩ version	R-V38-100KA	6Kgf
	250 kΩ version	R-V38-250KA	6Kgf
	500 kΩ version	R-V38-500KA	6Kgf
Operating (Useable) Temperature		-10 °C to +70 °C
Rated Wattage (Power)		0.25W
Rotational Torque		20-200 gf-cm
Shaft Diameter		6.35 mm
Sliding Noise		<47 mV
Tap Residual Resistance		≤100 Ω
Taper		Audio
Tolerance	1 MΩ version	R-V38-1MA	±30%
	1 kΩ version	R-V38-1KA	±20%
	10 kΩ version	R-V38-10KA	±20%
	25 kΩ version	R-V38-25KA	±20%
	100 kΩ version	R-V38-100KA	±20%
	250 kΩ version	R-V38-250KA	±20%
	500 kΩ version	R-V38-500KA	±20%
Total Rotational Angle		300° ±5°
Total Shaft Length	1 MΩ version	R-V38-1MA	15 mm
	1 kΩ version	R-V38-1KA	15 mm
	10 kΩ version	R-V38-10KA	15 mm
	25 kΩ version	R-V38-25KA	15 mm
	100 kΩ version	R-V38-100KA	15 mm
	250 kΩ version	R-V38-250KA	15 mm
	500 kΩ version	R-V38-500KA	15 mm
Washer I.D.		9.7 mm
Washer O.D.		16 mm
Washer Thickness		0.4 mm
Withstand Voltage		500 VAC for 1 min.

Packaging Information
Packaging Dimensions		1.3 in. × 0.973 in. × 1.048 in.
Weight (Packaging)		0.023 lbs.

Product Measurements by Item
R-V38-1KA - 1 kΩ version	Body Depth	11.5 mm
	Body Width	24 mm
	Bushing Length	6.5 mm
	Bushing Thread	3/8"-32UNF
	Hex Nut Thickness	2.2 mm
	Hex Nut Width	12.6 mm
	Insulation Resistance	＞100 MΩ at 500VDC
	Life	15,000 cycles
	Manual Soldering Max Temp for 3 sec.	350 °C
	Max. Working Voltage	250V
	Max Rotational Stopper Strength	6Kgf
	Operating (Useable) Temperature	-10 °C to +70 °C
	Rated Wattage (Power)	0.25W
	Rotational Torque	20-200 gf-cm
	Shaft Diameter	6.35 mm
	Sliding Noise	<47 mV
	Tap Residual Resistance	≤100 Ω
	Taper	Audio
	Tolerance	±20%
	Total Rotational Angle	300° ±5°
	Total Shaft Length	15 mm
	Washer I.D.	9.7 mm
	Washer O.D.	16 mm
	Washer Thickness	0.4 mm
	Withstand Voltage	500 VAC for 1 min.
R-V38-10KA - 10 kΩ version	Body Depth	11.5 mm
	Body Width	24 mm
	Bushing Length	6.5 mm
	Bushing Thread	3/8"-32UNF
	Hex Nut Thickness	2.2 mm
	Hex Nut Width	12.6 mm
	Insulation Resistance	＞100 MΩ at 500VDC
	Life	15,000 cycles
	Manual Soldering Max Temp for 3 sec.	350 °C
	Max. Working Voltage	250V
	Max Rotational Stopper Strength	6Kgf
	Operating (Useable) Temperature	-10 °C to +70 °C
	Rated Wattage (Power)	0.25W
	Rotational Torque	20-200 gf-cm
	Shaft Diameter	6.35 mm
	Sliding Noise	<47 mV
	Tap Residual Resistance	≤100 Ω
	Taper	Audio
	Tolerance	±20%
	Total Rotational Angle	300° ±5°
	Total Shaft Length	15 mm
	Washer I.D.	9.7 mm
	Washer O.D.	16 mm
	Washer Thickness	0.4 mm
	Withstand Voltage	500 VAC for 1 min.
R-V38-25KA - 25 kΩ version	Body Depth	11.5 mm
	Body Width	24 mm
	Bushing Length	6.5 mm
	Bushing Thread	3/8"-32UNF
	Hex Nut Thickness	2.2 mm
	Hex Nut Width	12.6 mm
	Insulation Resistance	＞100 MΩ at 500VDC
	Life	15,000 cycles
	Manual Soldering Max Temp for 3 sec.	350 °C
	Max. Working Voltage	250V
	Max Rotational Stopper Strength	6Kgf
	Operating (Useable) Temperature	-10 °C to +70 °C
	Rated Wattage (Power)	0.25W
	Rotational Torque	20-200 gf-cm
	Shaft Diameter	6.35 mm
	Sliding Noise	<47 mV
	Tap Residual Resistance	≤100 Ω
	Taper	Audio
	Tolerance	±20%
	Total Rotational Angle	300° ±5°
	Total Shaft Length	15 mm
	Washer I.D.	9.7 mm
	Washer O.D.	16 mm
	Washer Thickness	0.4 mm
	Withstand Voltage	500 VAC for 1 min.
R-V38-100KA - 100 kΩ version	Body Depth	11.5 mm
	Body Width	24 mm
	Bushing Length	6.5 mm
	Bushing Thread	3/8"-32UNF
	Hex Nut Thickness	2.2 mm
	Hex Nut Width	12.6 mm
	Insulation Resistance	＞100 MΩ at 500VDC
	Life	15,000 cycles
	Manual Soldering Max Temp for 3 sec.	300 °C
	Max. Working Voltage	250V
	Max Rotational Stopper Strength	6Kgf
	Operating (Useable) Temperature	-10 °C to +70 °C
	Rated Wattage (Power)	0.25W
	Rotational Torque	20-200 gf-cm
	Shaft Diameter	6.35 mm
	Sliding Noise	<47 mV
	Tap Residual Resistance	≤100 Ω
	Taper	Audio
	Tolerance	±20%
	Total Rotational Angle	300° ±5°
	Total Shaft Length	15 mm
	Washer I.D.	9.7 mm
	Washer O.D.	16 mm
	Washer Thickness	0.4 mm
	Withstand Voltage	500 VAC for 1 min.
R-V38-250KA - 250 kΩ version	Body Depth	11.5 mm
	Body Width	24 mm
	Bushing Length	6.5 mm
	Bushing Thread	3/8"-32UNF
	Hex Nut Thickness	2.2 mm
	Hex Nut Width	12.6 mm
	Insulation Resistance	＞100 MΩ at 500VDC
	Life	15,000 cycles
	Manual Soldering Max Temp for 3 sec.	350 °C
	Max. Working Voltage	250V
	Max Rotational Stopper Strength	6Kgf
	Operating (Useable) Temperature	-10 °C to +70 °C
	Rated Wattage (Power)	0.25W
	Rotational Torque	20-200 gf-cm
	Shaft Diameter	6.35 mm
	Sliding Noise	<47 mV
	Tap Residual Resistance	≤100 Ω
	Taper	Audio
	Tolerance	±20%
	Total Rotational Angle	300° ±5°
	Total Shaft Length	15 mm
	Washer I.D.	9.7 mm
	Washer O.D.	16 mm
	Washer Thickness	0.4 mm
	Withstand Voltage	500 VAC for 1 min.
R-V38-500KA - 500 kΩ version	Body Depth	11.5 mm
	Body Width	24 mm
	Bushing Length	6.5 mm
	Bushing Thread	3/8"-32UNF
	Hex Nut Thickness	2.2 mm
	Hex Nut Width	12.6 mm
	Insulation Resistance	＞100 MΩ at 500VDC
	Life	15,000 cycles
	Manual Soldering Max Temp for 3 sec.	350 °C
	Max. Working Voltage	250V
	Max Rotational Stopper Strength	6Kgf
	Operating (Useable) Temperature	-10 °C to +70 °C
	Rated Wattage (Power)	0.25W
	Rotational Torque	20-200 gf-cm
	Shaft Diameter	6.35 mm
	Sliding Noise	<47 mV
	Tap Residual Resistance	≤100 Ω
	Taper	Audio
	Tolerance	±20%
	Total Rotational Angle	300° ±5°
	Total Shaft Length	15 mm
	Washer I.D.	9.7 mm
	Washer O.D.	16 mm
	Washer Thickness	0.4 mm
	Withstand Voltage	500 VAC for 1 min.
R-V38-1MA - 1 MΩ version	Body Depth	11.5 mm
	Body Width	24 mm
	Bushing Length	6.5 mm
	Bushing Thread	3/8"-32UNF
	Hex Nut Thickness	2.2 mm
	Hex Nut Width	12.6 mm
	Insulation Resistance	＞100 MΩ at 500VDC
	Life	15,000 cycles
	Manual Soldering Max Temp for 3 sec.	350 °C
	Max. Working Voltage	250V
	Max Rotational Stopper Strength	6Kgf
	Operating (Useable) Temperature	-10 °C to +70 °C
	Rated Wattage (Power)	0.25W
	Rotational Torque	20-200 gf-cm
	Shaft Diameter	6.35 mm
	Sliding Noise	<47 mV
	Tap Residual Resistance	≤100 Ω
	Taper	Audio
	Tolerance	±30%
	Total Rotational Angle	300° ±5°
	Total Shaft Length	15 mm
	Washer I.D.	9.7 mm
	Washer O.D.	16 mm
	Washer Thickness	0.4 mm
	Withstand Voltage	500 VAC for 1 min.

Specification Sheet for 1 MΩ	R-V38-1MA
Specification Sheet for 1 kΩ	R-V38-1KA
Specification Sheet for 10 kΩ	R-V38-10KA
Specification Sheet for 100 kΩ	R-V38-100KA
Specification Sheet for 25 kΩ	R-V38-25KA
Specification Sheet for 250 kΩ	R-V38-250KA
Specification Sheet for 500 kΩ	R-V38-500KA

My Project Lists

Specifications, Files, and Documents

Specification Sheet for 1 MΩ (R-V38-1MA)

1.38 MB

Specification Sheet for 1 kΩ (R-V38-1KA)

1.37 MB

Specification Sheet for 10 kΩ (R-V38-10KA)

1.37 MB

Specification Sheet for 100 kΩ (R-V38-100KA)

1.37 MB

Specification Sheet for 25 kΩ (R-V38-25KA)

1.37 MB

Specification Sheet for 250 kΩ (R-V38-250KA)

1.37 MB

Specification Sheet for 500 kΩ (R-V38-500KA)

1.37 MB

Questions and Answers

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1 answers Should these pots be used only for amp projects or could they be used for guitars as well?

Asked by kjt1776 on December 16th, 2018.

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BradWbr

December 18th, 2018

Staff Member

They are perfectly acceptable replacements for guitar potentiometers.

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Product Reviews

5.00 out of 5 based on 1 reviews

J T - June 9th, 2021

5 out of 5

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I didn't use any of these yet...but as almost all alpha pots do,they feel nice and tight and smooth to turn, and I am pretty sure they will be just fine,as I have used a lot of alpha pots and they all were very good...and a lot of them were solder to and re soldered to many times without any issues.