Features
■ 3/8 ” Square / Single-Turn / Cermet
Industrial / Sealed High Voltage
Focus Control
■ Designed for electrostatic focus control
applications on monochrome or
color CRTs
■ Rated at 1KV D.C. and 600 VDC input
voltage
■ High stability cermet element
■ Available with optional red knob
■ Lead free version available
3386-HV2/3386-HV3 - 3/8 ” Trimming Potentiometer
3386N
Typical Focus Control Circuits
Electrical Characteristics
Common Dimensions
Standard Resistance Range
3.81
(.150)
3.81
4.83
(.190)
..............................2.5 and 5 megohms
Resistance Tolerance ...................±2ꢀ ꢁ
Contact Resistance Variation
..............................................2 ꢁ max.
Adjustability
Voltage Divider........................±ꢀ.ꢀ5 ꢁ
Rheostat..................................±ꢀ.ꢂ5 ꢁ
Resolution.....................................Infinite
Insulation Resistance @ ꢂKV D.C.
............................ꢂ,ꢀꢀꢀ megohms min.
Dielectric Strength (5,ꢀꢀꢀ foot altitude)
...................................ꢂ.5 KV A.C. min.
Adjustment Angle ..................28ꢀ ° nom.
3.81
(.150)
ANODE
VOLTAGE
10-18 KV.
TYP.
(.150)
5.97 ± .89
(.235 ± .035)
2
3
1
5.08
†
(.200)
.38
(.015)
DIA.
MIN.
3.05
(.120)
.51 ± .05
(.020 ± .002)
G4
FOCUS
0-600V
ADJ. RANGE
TYP.
ADJ. SLOT
.76
WIDE
(.030)
2.54
(.100)
3.81
X
X
DEEP
LONG
3386N-HV3-255
or
3386U-HV3-255
Environmental Characteristics
9.53
(.375)
HV2 Input Voltage
(.150)
85 °C .............................(ꢂK VDC max.)
ꢂ25 °C.........................................ꢀ watt
HV3 Input Voltage
85 °C............................(6ꢀꢀ VDC max.)
ꢂ25 °C.........................................ꢀ watt
Temperature Range
MONOCHROME
† VALUES DETERMINED BY CIRCUIT VOLTAGES
9.53
(.375)
ANODE
VOLTAGE
21-27 KV.
TYP.
3386U
.................................-55 °C to +ꢂ25 °C
Temperature Coefficient
........................................±±ꢀꢀ ppmꢃ°C
Humidity........MIL-STD-2ꢀ2 Method ꢂꢀ3
2±ꢀ Hours (ꢂꢀꢀ megohms min. IR)
Load Life
HV2 ......................ꢂ,ꢀꢀꢀ hours ꢂ KVDC
6ꢀ °C, 9ꢀ ꢁ R.H. (3 ꢁ max. ∆TR)
HV3.....................ꢂ,ꢀꢀꢀ hours 6ꢀꢀ VDC
6ꢀ °C, 9ꢀ ꢁ R.H. (3 ꢁ max. ∆TR)
Voltage Breakdown
†
5.08
(.200)
5.59
(.220)
MIN.
5.08
(.200)
3.81
(.150)
G4
FOCUS
6-7 KV.
.51 ± .05
(.020 ± .002)
DIA. PINS
†
TYP.
3
2
1
3.81
(.150)
.38
0-1 KV.
FOCUS
RANGE
MIN.
(.015)
(5,ꢀꢀꢀ foot altitude) ............ꢂ.5 KV min.
Seal Test .......................85 °C Fluorinert*
Vibration ...............No discontinuity 3ꢀ G
Shock .................No discontinuity ꢂꢀꢀ G
Rotational Life................2ꢀꢀ cycles min.
3386N-HV2-505
or
3386U-HV2-505
How To Order
3386 N - HV2 - 505 T LF
COLOR
Physical Characteristics
Model
Mechanical Angle ..................3ꢂꢀ ° nom.
Torque .............................5.ꢀ oz-in. max.
Stop Strength................ꢂ5.ꢀ oz -in. min.
Terminals ........................Solderable pins
Weight ........................................ꢀ.ꢀ± oz.
Marking ...........................Manufacturer’s
trademark, resistance code,
Style
WIPER
2
High Voltage
Construction Indicator
HV2 = ꢂꢀꢀꢀ VDC
CW
CCW
3
1
CLOCKWISE
HV3 = 6ꢀꢀ VDC
Resistance Code
-255 = 2.5 megohms
-5ꢀ5 = 5 megohms
TOLERANCES: 0.25 (.010) EXCEPT WHERE NOTED
wiring diagram, date code,
Optional Suffix Letter
T = Red Knob
MM
DIMENSIONS ARE:
manufacturer’s model
(INCHES)
number and style
Terminations
LF = ꢂꢀꢀ ꢁ Tin-plated (lead free)
Blank = 9ꢀ ꢁ Tin ꢃ ꢂꢀ ꢁ Lead-plated
Flammability ..........................U.L. 9±V-ꢀ
Standard Packaging .....5ꢀ pcs. per tube
Adjustment Tool ..............................H-9ꢀ
SHADED AREAS TYPICALLY NOT STOCKED BY
DISTRIBUTORS AND NOT RECOMMENDED FOR NEW
DESIGNS.
*”FLUORINERT” IS A REGISTERED TRADEMARK OF 3M CO.
REV. 05/04
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.