LTR12 & LTM12 Ultra-Miniature Illuminated Pushbutton Switches RoHS Compliant Series Conductive Rubber ContactLTR type Mettal ContactLTM type Rating Features 1. Full Surface Illumination (LTM2, LTMG2, LTR2 Series Miniature, low-cost switch with full surface illumination by LED. Buttons available in square shape (7.5/10mm sq.) and round shape (7.5/10mm dia.) in 3 colors (Red, Green, Yellow). Non-illuminated switches also available (LTM1, LTMG1, LTR1 series). Initial Contact Resistance Dielectric Strength 250VAC 1 minute InsulationResistance 100M min ElectricalLife 2. Two Types of Contacts LTR series: Conductive rubber contact for soft tactile feel. LTM/LTMG series: Metal contact for sharp tactile feel. 3. PC Board Mount Terminal pitch is in inches (multiples of 2.54 mm) for all models. The unique terminal shape prevents the terminals from coming loose from the PC board during dip soldering. 4. Enhanced Resistance to Soldering Heat Improved terminal structure protects the contacts from soldering heat. In addition, each pole has two terminals which can be used as a jumper wire. 5. Compatible With Lead-Free Soldering (LTM Series) Heat-resistance resin for lead-free soldering. LTR 10mA 12VDC max. 10 A Min. LTM1VA max.50mA max.48VDC max 0.5mA min. LTMG1VA Max.50mA max.48VDC max. 10 A min. LTR500 max.1mA 2VDC at 1.47N150gf LTM100m max 1.5mA 200 VAC at 1.96N200gf ContactBounce Travel OperatingForce atpeakforce Operating TemperatureRange Storage TemperatureRange 100VDC LTR 100,000 operations LTM300,000 operations LTR 3 msec. max.Initial value LTM10 msec. max.Initial value LTR 1 mm LTM0.25 mm LTR 0.980.39N LTM1.370.39N -2570 -4070 LTRLTM Part Numbering Operating Force vs. Stroke Characteristics 2 01 L2 LT M G Series Code Contact Plating Type of Contact LED luminance Structure LED Color Type of Contacts and Contact Plating Code Type of Contact Contact Plating R Conductive rubber contact Gold plated M Metal contact Silver plated MG Metal contact Gold plated A/Fig.A Note : The contacts of LTR series are all gold-plated. PC Hole Layouts LTR1/LTM1 Type LTR2/LTM2 Structure 1 Fig. 2 Dimensions Top view Structure Without LED Non-illuminated LLED liminance With LED Symbol LED luminance 01 Normal luminance 31 High luminance LTR2LTM2LTMG2 Forward V (VF) Reverse Voltage (VR) Forward Current (IF) nom. max. Red 30mA 2.0V 2.5V DC5V L5 Green 25mA 2.2V 2.5V DC5V L6 Bule 30mA 3.8V 4.5V DC5V L8 Yellow 30mA 2.1V 2.5V DC5V L2 Red 30mA 1.95V 2.5V DC5V L5 Green 30mA 3.2V 4.0V DC5V L8 Yellow 30mA 2.0V 2.5V DC5V Code Color L2 Luminance Normal High Zipper Plastic Bag Table of Part Numbers LTM Series Contactplating Non-illuminated LEDcolor Silver Plated LTM1-01 LTR Gold Plated - LTMG1-01 Gold Plated LTR1-01 - Red LTM2-01-L2 LTM2-31-L2 LTMG2-01-L2 LTR2-01-L2 LTR2-31-L2 Green LTM2-01-L5 LTM2-31-L5 LTMG2-01-L5 LTR2-01-L5 LTR2-31-L5 Bule LTM2-01-L6 Yellow LTM2-01-L8 - LTM2-31-L8 LTMG2-01-L6 LTR2-01-L6 LTMG2-01-L8 LTR2-01-L8 Inquiry products. - LTR2-31-L8 Made to order products. LTRConductive Rubber Contact SPST Without LEDNon-illuminated 6 2.5 STROKE1 Switching function Circuit diagrams Part No. 6.50.3 0.4 3.50.3 0.5 0.65 7 60.2 5.080.5 6.2 4 2 LTR1-01 OFF Connecting terminals ON 1 t=0.3 3 FUJISOKU LTR1 Terminal numbers are not shown on the switch. SPST With LED 6 0.7 Switching function 2.5 STROKE1 6.50.3 0.4 73 3.50.3 0.65 0.5 6 7 60.2 5.080.5 6.2 4 t=0.3 3 0.5 Circuit diagrams Part No. FUJISOKU LTR2 2 1 LTR2-01-L LTR2-31-L OFF Connecting terminals ON 5 Terminal numbers are not shown on the switch. LED circuit LTMMetal Contact LTM1 SPST Without LEDNon-illuminated Switching function 2.5 STROKE0.25 6.50.3 0.4 3.50.3 0.5 0.65 2 3 1 5.080.5 6.2 4 LTM1-01 LTMG1-01 OFF Connecting terminals ON t=0.3 7 60.2 Circuit diagrams Part No. FUJISOKU 6 Terminal numbers are not shown on the switch. LTM2 SPST With LED 6 0.7 Switching function 2.5 STROKE0.25 6.50.3 0.4 73 3.50.3 0.65 0.5 FUJISOKU 7 60.2 5.080.5 6.2 4 t=0.3 3 0.5 6 2 LTM2-01-L LTMG2-01-L LTM2-31-L OFF 1 5 Connecting terminals Terminal numbers are not shown on the switch. ON Momentary Circuit diagrams Part No. . ON LED circuit Refer to "Table of Part Numbers" on P.171. LTRLTM Flux Cleaning Soldering Series LTM LTR Manualsoldering 380 Max. 3sec. Max. 275 Max. 6sec. Max. 380 Max. 3sec. Max. 265 Max. 6sec. Max. Autosoldering , 120 sec. max. Do not dip solder the switches with color buttons or Solvents : Fluorine or Alcohl type LTM and LTR series are not washable. To wash the PC board, clean the soldering surface of the PC board with a brush so that the switch is not exposed to the cleaning solution. After soldering, wait until the temperature of the terminals cool down to 90 or below or until the parts are exposed to room temperature for more than 5 min. before washing. mounting frames attached. Soldering heat may deform !# Ambient Conditions Dimensions of Assembled Switch In case of switches with silver-plated contacts, do not use in an environment where there is corrosive gas such as sulfuric or $$ $%& ' # LTM and LTR series are open-structure switches and should not be used in a dusty environment. 1.5 size A size B 10 12.5 10mm sq. 12.5mm sq. 10 12.5 10mm dia. 12.5mm dia. 7.5 10 7.5mm sq. 10mm sq. 7.5 10 7.5mm dia. 10mm dia. 2 7.5 3.5 12.5 Button 10 10mm sq. 10 10mm dia. 7.5 7.5mm sq. 7.5 7.5mm dia. Precautions LED circuit Accessories mounting Current to be applied to the LED must be lower than the forward current (IF) indicated intheLEDSpecifications ofeachswitches.Resistance valueRshouldbecalculated usingtheformulaontheright. lingtheMountingFrame all the mounting frame hatthetabontheframe n the same direction as slotontheswitch. Example:E=5V, IF=10mA R= E-VF IF R= 5-2.0 0.01 =300 UseVF=2.0Vtocalculate. InstallingtheButton Installthebuttonsothattheprotrusionsontheswitchfitinto thesquareholesonthebutton. The mounting frame cannot be installed with the switch buttoninstalled. LTRLTM Optional Accessories Sold separately PartName Color Button 10 Normalluminance Highluminance Darkgray 140007480168 140007480178 140007480188 140007480198 Gray 140007480169 140007480179 140007480189 140007480199 Lightgray 140007480170 140007480180 140007480190 140007480200 Ivory 140007480171 140007480181 140007480191 140007480201 Red 140007480172 140007480182 140007480192 140007480202 Green 140007480174 140007480184 140007480194 140007480204 Blue 140007480173 140007480183 140007480193 140007480203 Clear 140007480422 140007480451 140007480505 140007480506 Redclear 140007480205 140007480208 140007480211 140007480214 Greenclear 140007480206 140007480209 140007480212 140007480215 Yellowclear 140007480207 140007480210 140007480213 140007480216 Clear 140007480554 140007480558 140007480562 140007480566 Redclear 140007480551 140007480555 140007480559 140007480563 Greenclear 140007480552 140007480556 140007480560 140007480564 Yellowclear 140007480553 140007480557 140007480561 140007480565 PartName Dimensions /Mounting Frame 10 12.5 Darkgray 140000340170 140000340171 140000340168 140000340169 Gray 140000340179 140000340182 140000340173 140000340176 Lightgray 140000340180 140000340183 140000340174 140000340177 Ivory 140000340181 140000340184 140000340175 140000340178 Mounting frame is common to both illuminated and non-illuminated switches. PartName Color Button Dimensions LEDluminance Normal luminance Screencolor Color Illuminatedtype Illuminatedtype Non-illuminatedtype Dimensions High luminance Normal luminance Clear High luminance Clear Darkgray 140007480452 140007480567 140007480459 140007480574 Gray 140007480453 140007480568 140007480460 140007480575 Lightgray 140007480454 140007480569 140007480461 140007480576 Ivory 140007480455 140007480570 140007480462 140007480577 Red 140007480456 140007480571 140007480463 140007480578 Green 140007480457 140007480572 140007480464 140007480579 Blue 140007480458 140007480573 140007480465 140007480580 Optional Accessories