Model ST-4 Surface Mount Trimming Potentiometer 4 mm Square Single Turn, Cermet SPECIFICATIONS Electrical Resistance Range Resistance Tolerance Temp. Coeff. Of Resistance Power Rating Operating Voltage Max. Wiper Current Max. Electrical Angle, Nominal Electrical Continuity End Resistance Resolution Contact Resistance Variation Operating Temp. Range Insulation Resistance, Min. Dielectric Strength Features z z z z z Sealed to Allow for Automatic Processing Vertical and Horizontal Adjustment Styles Gull Wing, J Lead and Thru Hole Pin Styles Precious Metal Alloy Contact Tape and Reel, Magazine and Bulk Packaging Part Number ST4 A 103 Mechanical Mechanical Angle, Nominal Operating Torque Stop Strength, Min. Rotational Life : 10 Ohms to 2 Meg. Ohms : 6 20% Standard : 100 Ohms to 2 Meg. 6 100 ppm, others 6 250 ppm. : 1/4 Watt at 70C : 200 VDC or Power Rating, whichever is less. : 100 mA or power rating, whichever is less. : 210 Nominal. : Continuous over full mechanical range. : 1% or 2 Ohms, whichever is greater. : Essentially infinite. : 1% or 3 Ohms, wichever is greater. : -55C to 125C. : Min. 1000 Meg. at 500 VDC for 2 minutes. : 500 VAC rms, 1 minute, 1 milliamp max. : 240 Nominal : 100 gram-cm max. (1.39 Oz-in.) : 300 gram-cm min. (4.17 Oz-in.) : 100 cycles, (m R/R < 2 V +3%) Model Package Option Blank = Bulk Pack T = Tape & Reel/500 Units M = Magazine/50 Units Pin Style Resistance Code Marking Units Marked With Resistance Code, and 2 Digit Date Code Standard Resistance Values and Codes 4 V Code V Code 10 20 50 100 200 500 1K 2K 5K 100 200 500 101 201 501 102 202 502 10 K 20 K 50 K 100 K 200 K 500 K 1M 2M 103 203 503 104 204 504 105 205 Environmental (MIL-R-22097) Thermal Shock: (-65C to 125C) m R/R < 2.00% m SS < 1.00% Humidity: (80 98% RH, 240 Hrs.) m R/R < 2.00% Mech. Shock: (100 g, 6 axes, 3 times) m R/R < 1.00% m SS < 1.00% Vibration: (20 g, 10 to 2000 Hz.) m R/R < 1.00% m SS < 1.00% Low Temp. Operation: (-55C, 2 Hrs.) m R/R < 2.00% m SS < 2.00% High Temp. Exposure: (125C, 250 Hrs.) m R/R < 3.00% m SS < 2.00% Load Life: (70C, 0.25 W, 1000 Hrs.) m R/R < 3.00% m SS < 1.00% Soldering Heat: (260C, 10 Sec. or 215C, 3 minutes) m R/R < 1.00% Immersion: Fluorocarbon Liquid, 85C, 1 min. No Leaks ST-4 Single Turn Cermet Surface Mount ST-4A J Lead Top Adjust ST-4B Gull Wing Top Adjust ST-4G J Lead Side Adjust ST4A SUGGESTED LAND PATTERNS ST4B ST4G A and B Styles Conform to Industry Standard, VRCI SMT--300, for 4 mm Single Turn Center Line of Part Falls on Center Line of Pattern Metric 1. Dimensions are in millimeters (inches in parentheses are for reference only). 2. Tolerances unless otherwise specified +/- 0.30 mm (+/- .012 inches). 3. See packaging options on following pages for packaging dimensions. 5 ST-4 Single Turn Cermet Surface Mount ST-4C Thru Hole Top Adjust ST-4D Gull Wing Bottom Adjust Semi Standard ST-4F Thru Hole Bottom Adjust Semi Standard ST-4H Gull Wing Side Adjust 6 Metric 1. Dimensions are in millimeters (inches in parentheses are for reference only). 2. Tolerances unless otherwise specified +/- 0.30 mm (+/- .012 inches). 3. See packaging options on following pages for packaging dimensions. ST-4 Single Turn Cermet Surface Mount ST-4M Magazine Packaging Dimensions ST4TA ST4TB Tape Dimensions 8.0 6 0.1mm ST4TH ST4TG (.315 6 .004) 0.30 6 0.1 mm .012 6 .002) Tape Dimensions 5.50 6 0.1 mm (.217 6 .002) 12. 6 0.3 mm (.472 6 .012) Reel Dimensions Metric 1. Dimensions are in millimeters (inches in parentheses are for reference only). 2. Tolerances unless otherwise specified +/- 0.30 mm (+/- .012 inches). 7