Back Lighted Pushbutton Switch A3A Compact Switch Unit Allows Signal and Power Switching in the Same Model Capable of switching within the range 1mA 5VDC to 6A 125VAC. Mounting direct to PCB, or panel mounting using appropriate bezel. Requires only 14.5mm behind panel depth. Options include: – Round or Square – Momentary or Latching – Illuminated or Non–illuminated Ordering Information A3A j1 –9 j2 j Shape Square Round Type Solder PCB 3 Action Code K L 4 Pushbutton Code ER EY EG L R Y G A B 2 Terminals Code 0 1 j j 1 Pushbutton Shape Code A T j j3 1–00 j4 Action Momentary Alternate Colour Type Red Yellow Green Grey Red Yellow Green Blue Black Type Illuminated Illuminated Illuminated Non–illuminated Non–illuminated Non–illuminated Non–illuminated Non–illuminated Non–illuminated Specifications LED Ratings Absolute Maximum Characteristic Reverse Voltage Forward Current Permissable loss Operating Temp Storage Temp Unit VR IF PD TOPR TSTO Contact Ratings Voltage (V) Value 4V 25mA 70mW –20 to + 75 C –30 to + 100 C Current (A) Resistive Lamp Inductive Motor 125 AC 6 1 2 1 250 AC 2 0.5 1 0.5 8 DC 4 1 2 1 14 DC 4 1 2 1 30 DC 4 1 1.5 1 125 DC 0.4 0.05 0.4 0.05 250 DC 0.4 0.03 0.2 Note: Min. permissible load 1mA 5VDC 0.03 LED Ratings Standard Ratings Characteristic Unit Condition Typical Max Forward voltage VF IF = 15mA 2.05V 2.8V Reverse current IR VR = 4V – 100mA Characteristics Insulation resistance 100MΩ min. (at 500VDC) Dielectric strength 600 VAC, 50/60Hz for 1 minute between terminals of same polarity 2,000VAC, 50/60Hz for 1 minute between terminals of different polarity and also between each terminal and ground Vibration Mechanical and malfunction durabiltiy: 10 to 55Hz, 1.5mm double amplitude Shock Mechanical durability: 500 m/s2 (a (approx. rox. 50 G) Mechanical durability: 150 m/s2 (approx. 15 G) Ambient temperature Operating: –10_C to 55_C Humidity 35 to 85% RH Life expectancy Mechanical: Momentary action type: 1,000,000 operations min. Alternate action type: 50,000 operations min. Electrical: 50,000 operations min. Weight Approx. 3.2g Dimensions Panel cutout For separate mounting For round pushbutton Horizontal multiple mounting Flange Flange For square pushbutton 11.5 dia 15.3 min +0.2 –0 11.5 Panel +0.2 –0 +0.2 –0 14.5 3.8 min 15.3 min 11.5 dia. 11.5 Vertical Multiple mounting +0.2 –0 11.5 dia 11.5 +0.2 –0 15.3 min +0.2 –0 11.5 11.5 +0.2 –0 +0.2 –0 Note: 12.7 (n–1) +11.5 +0.3 0 12.7 min * Recommended panel thickness: 1 to 1.6 mm ** Flange dimensions: Round: 12.7 dia. Square: j 12.7 1. Unless otherwise specified, a tolerance of+/– 0.2mm applies to all dimensions. 2. The illustrations below show switches with solder terminals, without flange or leafspring. Non–lighted Illuminated Round pushbutton type 15.24 Round pushbutton type 15.24 Square pushbutton Square pushbutton 8.9 12.7 12.7 8.9 8.9 dia. 8.9 dia. Mechanical indication 18 (21.5) 12.5 Surface illumination (1.5 x 1.5) 18 (21.5) 12.5 3.5 3.5 1.7 0.8 x 2 Two 0.4 thick terminals 1.7 0.8 x 2 Two 0.3 thick LED terminals Two 0.4 thick terminals Type High capacity (SPST–NO) Type High capacity (SPST–NO) Non–lighted model Non–lighted model 1 1 3.5 0.6 3.5 0.4t 1.7 1.7 Lighted model Lighted model 1 1 Solder terminals 3.5 LED terminals are provided in the lighted models only PCB Terminals 3.5 0.3t 1.7 0.8 x 2 LED terminals are provided in the lighted models only 0.6 0.3t 1.7 0.4t 0.8 x 2 LED terminals LED terminals 10.16 10.16 4.48 4.48 10.16 10.16 Mounting holes Mounting holes are provided in the lighted models only. (0.67) Four 1. dia. holes 10.16 4.48 (1.87) (2.54) 10.16 (2.54) (bottom view) Accessories (Order Separately) Flange (select according to colour) Name Shape Classification Flange alone Flange Remarks Black A3A–251 Light grey A3A–252 Black A3A–241 Light grey A3A–242 Leaf spring Flange and leaf spring ((one each)) Note: Model A3A–200 Black A3A–221 Light grey A3A–222 Black A3A–211 Light grey A3A–212 Switch units having solder terminals are supplied with a black flange (appropriately round or square) and a metal leaf spring, used when panel mounting.