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1202
Vishay Foil Resistors
Bulk Metal(R) Foil Technology Precision Trimming Potentiometers, 1 1/4 Inch Rectilinear, RJ12 Style, Designed to Meet or Exceed The Requirements of Mil-PRF-22097, Char. F
FEATURES
* Temperature Coefficient of Resistance (TCR): 10ppm/C Maximum4 (- 55C to + 150C Ref. @ + 25C); Through the wiper5; 25ppm/C * Load Life Stability: 0.1% Typical DR, 0.5% Maximum DR under Full Rated Power @ + 85C for 2,000 hours * Settability: 0.05% Typical; 0.1% Maximum * Setting Stability: 0.1% Typical; 0.5% Maximum, DSS
Product may not be to scale
* Power Rating: 0.5 watts @ + 85C * Resistance Range: 2W to 20KW
TABLE 1 - MODEL SELECTION *
MODEL 1202 TERMINATION STYLE AVERAGE STANDARD RESISTANCE VALUES WEIGHT (g) (in W) 2.5 2.5 3.3 5.1 2, 5, 10 20, 50, 100, 200, 250, 500 1K, 2K, 5K, 10K, 20K STANDARD TOLERANCES 10%2, 20% 0.5W 5%, 10% POWER RATING @ NO. OF + 85C AMBIENT TURNS 25 2
P-In Line PC Pins Y-Staggered PC Pins 1 L-Flexible Wire Leads LB-Flexible Wire Leads with bushings *See Figures 1 and 2 in this data sheet.
TABLE 2 - 1202 (RJ12) SERIES ELECTRICAL SPECIFICATIONS3
TABLE 3 - MECHANICAL SPECIFICATIONS
Adjustment Turns Mechanical Stops Internal Terminations Case Material 25 2 Wiper Idles - No Discontinuity All Welded - No Flux Glass Fortified Diallyl-Phthalate (DAP); Black 8 oz. in. Maximum; 3 oz. in. Typical 0.05% Typical
TRIMMERS
Temperature Coefficient of Resistance (TCR) End-to-End 4 2W 5W 10W 20W Through the Wiper
5
10ppm/C Maximum (- 55C to + 25C) 10ppm/C Maximum (+ 25C to + 150C) 20ppm/C 25ppm/C 0.1% Typical DR 0.5 % Maximum DR 0.1% Typical DR 1.0 % Maximum DR 0.5 watts @ + 85C 0.05% Typical; 0.1% Maximum 0.1% Typical; 0.5% Maximum DSS 3W Typical 10W Maximum 0.25% Typical; 1.0% Maximum To 100MHz 10ns @ 1KW 0.08mH Typical 0.5pF Typical - 55C to + 150C
Stability Load Life @ 2,000 Hours* Load Life @ 10,000 Hours* Power Rating6 Settability Setting Stability Contact Resistance Variation - CRV (noise)7 Hop-off High-Frequency Operation Rise/Decay Time Inductance Capacitance Operating Temperature Range
Shaft Torque Backlash
TABLE 4 - ORDERING INFORMATION - 1202 SERIES PARTS
Please specify Vishay Model 1202 Precision Trimming Potentiometers as follows: Example: 1202 P 100R 10%
MODEL NO.
TERMINATION STYLE
RESISTANCE VALUE
TOLERANCE
*Under Full Rated Power of 0.5 watts @ + 85C. Refer to last page in this data sheet for footnotes.
VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
See Table 1 for details. See Figure 1, next page for Standard Marking Illustration.
* ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988 * SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081
www.vishay.com 152
Document Number: 63055 Revision 26-Nov-01
1202
Bulk Metal Foil Technology Precision Trimming Potentiometers
FIGURE 1 - SCHEMATIC AND DIMENSIONS in inches (millimeters) 1202P
(In-Line Pins*)
0.093" (2.36mm) DIA (A) 2 Mtg. Holes 1.000" (25.40mm) C 0.125" (3.18mm) A 0.070" (1.78mm) C Slot 0.025" (0.64mm) W x 0.031" (0.79mm) DP (A) 0.125" (3.18mm) A 0.235" (5.97mm) C 0.325" (8.26mm) A 0.195" (4.95mm) A
(R)
Vishay Foil Resistors
0.500" (12.70mm) C 0.028" (0.71mm) DIA (B) 3 Pin Type Leads
0.700" (17.78mm) C 0.900" (22.86mm) C 2 1
0.260" (6.60mm) C
3
0.125" (3.18mm) DIA (A)
2 1
CW 3 Schematic
1.250" (31.75mm) C
1202Y
(Staggered Pins*)
0.093" (2.36mm) DIA (A) 2 Mtg. Holes 1.000" (25.40mm) C
0.125" (3.18mm) A 0.070" (1.78mm) C Slot 0.025" (0.64mm) W x 0.031" (0.79mm) DP (A) 0.125" (3.18mm) A 0.235" (5.97mm) C 0.325" (8.26mm) A 0.195" (4.95mm) A
TRIMMERS
0.500" (12.70mm) C
0.300" 0.265" (7.62mm) C (6.62mm) C 0.700" (17.78mm) C 2 0.125" (3.18mm) DIA (A)
0.028" (0.71mm) DIA (B) 3 Pin Type Leads 0.100" (2.54mm) C 1 2 CW
1
3
3
1.250" (31.75mm) C
Schematic
TOLERANCES A = 0.005" (0.13mm) B = 0.003" (0.08mm) C = 0.010" (0.25mm) *Pin leads are gold plated nickel which are solderable or weldable
STANDARD MARKING ILLUSTRATION
Model No., Resistance Value, Tolerance, TCR
Vishay Date Code 1 2 CW 3
Schematic
VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
* ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988
* SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081
Document Number: 63055 Revision 26-Nov-01
www.vishay.com 153
1202
Vishay Foil Resistors
Bulk Metal(R) Foil Technology Precision Trimming Potentiometers
FIGURE 2 - SCHEMATIC AND DIMENSIONS in inches (millimeters) 1202L
(Flexible Leads)
0.093" (2.36mm) DIA (A) 2 Mtg. Holes 3 Color Coded Leads-- # 30 AWG Teflon Coated Insulated Stranded Wire 1.000" (25.40mm) C 11.50" (292.10mm) Min. Length G Y R G Y R 1.250" (31.75mm) C 0.125" (3.18mm) DIA (A) R CW Y Schematic G 0.125" (3.18mm) A 0.070" (1.78mm) C Slot 0.025" (0.64mm) W x 0.031" (0.79mm) DP (A) 0.125" (3.18mm) A 0.235" (5.97mm) C 0.325" (8.26mm) A 0.195" (4.95mm) A
1202LB
(Panel Mounted)
0.093" (2.36mm) DIA (A) 2 Mtg. Holes 3 Color Coded Leads-- # 30 AWG Teflon Coated Insulated Stranded Wire 1.000" (25.40mm) C 11.50" (292.10mm) Min. Length G Y R 0.125" (3.18mm) C 0.325" (8.26mm) A
0.125" (3.18mm) A 0.042" (1.07mm) B 0.280" (7.11mm) B # 10 - 32 N.C. - 2 0.235" (5.97mm) A 0.400" (10.16mm) A 0.300" (7.62mm) A Slot: 0.025" (0.64mm) W x 0.031" (0.79mm) DP (A)
1.250" (31.75mm) C
TRIMMERS
G Y R
Rubber Gasket Lockwasher Hexnut R
0.195" (4.95mm) A CW Y Schematic G
TOLERANCES A = 0.005" (0.13mm) B = 0.003" (0.08mm) C = 0.010" (0.25mm) Standard marking shown on previous page.
FIGURE 3 - POWER DERATING CURVE
+85C
Percent of Rated Power
+100 +75 +50 +25 0 -75 -50 -25 0 +25 +50
+75 +100 +125 +150 +175
Ambient Temperature C
VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
* ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988
* SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081
www.vishay.com 154
Document Number: 63055 Revision 26-Nov-01
1202
Bulk Metal Foil Technology Precision Trimming Potentiometers
TABLE 5 - COMPARISON
MIL-PRF-22097/2 CHARACTERISTIC F8 TEST GROUP I Visual and Mechanical Total Resistance Actual Effective Electrical Travel End Resistance Contact Resistance Variation - CRV (noise) Dielectric Withstanding Voltage - DWV (Atmospheric and Barometric Pressure) Insulation Resistance Shaft Torque Thermal Shock TEST GROUP II Resistance Temperature Characteristic - TCR Moisture Resistance Contact Resistance Variation - CRV (noise) TEST GROUP III Shock (Specified Pulse) Vibration (High-Frequency) Contact Resistance Variation - CRV (noise) Salt Spray TEST GROUP IV Solder Heat Life (1,000 Hours @ + 85C)10 Contact Resistance Variation - CRV (noise) TEST GROUP V Low-Temperature Operation High-Temperature Exposure Contact Resistance Variation - CRV (noise) TEST GROUP VI Rotational Life Contact Resistance Variation - CRV (noise) Terminal Strength TEST GROUP VII Solderability (excluding termination L) Immersion (excluding termination L) TEST GROUP VIII Fungus VISHAY TRIMMERS ARE INSPECTED 100% For: * Short-time overload (6.25 x rated power for 5 seconds on; and for 30 seconds off - 3 cycles) * Immersion * Resistance tolerance check * End Resistance * Visual-Mechanical * Dynamic tests for Continuity, CRV By Sample For: * TCR * DWV No Failures 10% 17 to 27 Turns 2% or 20W9 3.0% or 3W9 Per MIL-Std-202, Methods 301 and 105 1000 Megohms 8oz. in. Maximum 1.0% 0.01% ( 100ppm/C) 1.0% 3.0% or 3W9 1.0% 1.0% 3.0% or 3W9 No Corrosion 1.0% 2.0% 3.0% or 3W9 1.0% 2.0% 3.0% or 3W9 2.0% 3.0% or 3W9 2 bs. Mil-Std-202 Method 208 No continuous stream of bubbles Mil-Std-810 Method 508 No Mechanical Damage 1202 MAXIMUM (WORST CASE) No Failures 10% 25 2 Turns 2W 3W Typical, 10W Maximum Per MIL-Std-202, Methods 301 and 105 > 1000 Megohms 8oz. in. Maximum 1.0% 0.001% ( 10 ppm/C) 0.5% 3W Typical, 10 W Maximum 0.5% 0.5% 3W Typical, 10W Maximum No Corrosion 0.05% 0.5% 3W Typical, 10W Maximum 0.5% 0.5% 3W Typical, 10W Maximum 2.0% 3W Typical, 10W Maximum 2lbs. Mil-Std-202 Method 208 No continuous stream of bubbles Mil-Std-810 Method 508 No Mechanical Damage
(R)
Vishay Foil Resistors
TRIMMERS
NOTES: 1. Preferred Termination style for current 1-1/4 inch rectilinear trimmers (staggered PC pins present a sturdier mounting arrangement for shock, vibration, and impact situations) 2. 10 ohms @ 5% available on special order 3. Maximum is 1.0% A.Q.L. standard for all specifications except TCR. (For TCR information see notes 4 and 5). "Typical" is a designers reference which represents that 85% of the lots supplied, over a long period of time, will be at least the figure stated or better. 4. Maximum TCR applies to the 3s (sigma) limit or 99.73% of a production lot. (Measured end-to-end with wiper off the element.) 5. Measurements of TCR through the wiper are influenced more by setting stability and the percentage of the total resistance in use (at the wiper) than by fundamental resistance change due to temperature alone. The parameter shown in Table 2 is a 2s distribution typifying the behavior of the device when used with 40% or more of the total resistance in use. 6. Derated linearly from full power @ +85C to zero (0) watts @ +150C. See Figure 3 in this data sheet. 7. Independent of resistance value. 3 ohms maximum available on special request. 8. All DR's are measured to the tolerance specified + 0.01 ohms. 9. Whichever is greater. 10. Load-Life test performed at nominal rated power, 0.5 watts, at + 85C Special Available Options: Special Marking Special lengths for lead wires (L, LB Style) Hooked leads Alternate bushing and PC combinations Burn-in and screening operations
VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
* ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988
* SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081
Document Number: 63055 Revision 26-Nov-01
www.vishay.com 155

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