Toggles Lamps & LEDs RERATING Rated Voltage [Applied ] Voltage R e r a t e d Cu r r e n t = Rated Cur r en t x Voltage [Applied ] Rated Voltage Pushbuttons R e r a t e d L ife = Rated L ife x Programmable Illuminated PB Voltage [Applied ] Rated Voltage 4x 10x 8x 6x CA 4x 3x ND LE W PO ER 2x 1.5x Slides 3x LIFE .5x ER .2x PO W .4x .1x .09x .08x .07x .06x .05x .04x .03x LIFE CA ND LE .3x .2x Tilt Touch CURRENT AVERAGE LIFE (Multiplying Factor) 1.15x 1.0x - 100% .9x .8x .7x .6x .5x .4x .3x Indicators 1.0x - 100% .9x .8x .7x .6x Tactiles 1.3x 2x .02x .01x .1x 50 60 70 80 90 100 110 120 PERCENT RATIO OF DESIGN VOLTS 130 140 150 Accessories CURRENT and MSCP (Multiplying Factor) Rotaries 5x 20x 9x 7x 5x Keylocks 90% 100x 70% 80x 60x 50% 40x 30x CURRENT and MSCP (Multiplying Factor) AVERAGE LIFE (Multiplying Factor) For your convenience, the graph below illustrates the way current, candlepower, and life performance vary with percent changes in applied voltage. The graphed values are typical for miniature and subminiature lamps with the average life based on rated voltages at 60 cycles AC, in room temperature, and under static conditions. Source: General Instrument Chicago Miniature Brand Incandescent and Neon Lamps, Catalog No. 8400-Rev 1, (Chicago, Illinois: General Instrument Corporation), page 3. www.nkk.com Z Z7 Supplement R e r a t e d M S C P = Rated M SCP x Rockers When a lamp is to be operated at a voltage other than the rated or design voltage, the rerated lamp specifications should be calculated to determine suitability for the user’s application. The following formulas assist in predicting the rerated effect on luminous intensity, endurance and current. Results are most reliable for applied voltages close to the rated voltage. Toggles Lamps & LEDs APPLICATION CONSIDERATIONS Rockers LEDs green, yellow, amber, blue, white, or bicolor (red/ green) LEDs. Most of the LEDs used in our products require a ballast resistor connected in series with the LED. In addition, we offer 5-, 12-, and 24-volt lamps with internal resistors in the YB series. Programmable Illuminated PB Pushbuttons Light emitting diodes (LEDs) operate at relatively low current and DC voltage levels and have comparatively unlimited service life. Their characteristics do not change significantly with age, and they are not easily damaged by shock or vibration. A variety of NKK’s switches and indicators are offered with red, Incandescent Lamps determined for any incandescent lamp under any set of conditions. Lamps perform at their maximum when used at their rated AC voltages or below. There are many known conditions or factors that affect lamp life. Using the lamp in abusive environments such as high ambient temperatures, high shock and/or vibration, constant illumination, and DC voltage accelerates deterioration of the tungsten filament. Rotaries Keylocks Lamp life is determined in a laboratory environment where conditions are near perfect. Actual applications, unlike the test environment, involve many factors which can greatly affect the values listed in lamp specifications. Of all the operating characteristics, lamp life is the least predictable. The lamp filament must deteriorate to produce illumination, and actual life is a function of this unpredictable rate of deterioration. Thus, exact life performance cannot be Slides Neon Lamps with neon lamps. Their typical 1.5mA current drain, better than 25,000-hour service life, and good resistance to shock and vibration make them an excellent alternative in many line voltage applications. For best visibility they should be used with clear lenses and diffusers. Other suitable colors are red, orange, yellow, or white. Tilt Tactiles Neon lamps are low-current, long-life sources limited by the high ionization voltage of neon (≥80 volts) for use in line voltage circuits. A series resistor is required in all neon lamps for current limiting. Larger lamps often include an integral resistor sized for a specific voltage. Neon lamps glow with a low intensity, amber light. Bright light and vivid colors are not obtainable Touch LED & Lamp Part Numbers for Each Series Supplement Accessories Indicators PN Z Z8 Type Series PN Type Series PN Type Series AT070 LED EB M MB24 AT618 LED EB M MB24 AT630 LED HB AT602 Incand. LW MLW AT621 LED YB AT631 LED KB LB YB YB2 AT602N Neon LW MLW AT622 LED MLW AT632 LED KB LB YB YB2 AT607 Incand. LB AT624 LED HB AT633 LED HB AT607N Neon LB AT625 LED KB LB YB YB2 AT634 LED KB YB YB2 AT611 Incand. KB YB AT627 LED LB AT635 LED KB LB AT615 Neon KB AT628 LED YB YB2 AT636 LED KB YB YB2 AT617 LED EB M MB24 AT629 LED HB www.nkk.com Toggles Ballast Resistors BALLAST RESISTOR CALCULATIONS & RECOMMENDATIONS Where: R = E = VF = IF = VF E Cathode – E – VF Rockers R = Anode IF Resistor Value (Ohms) Source Voltage (V) Forward Voltage (V) Forward Current (A) Pushbuttons IF + SOURCE VOLTAGE E VF IF V mA Ω W Ω W Ω W Ω W Ω W Ω W Ω W Ω W Ω W Ω W 1.65 25 130 1/4 180 1/2 300 1/2 430 1 510 1 560 1 680 2 820 2 910 2 1.1K 2 1.70 30 110 1/2 150 1/2 240 1 360 1 430 1 470 2 560 2 680 2 750 2 910 3 360 2 3 1.75 40 82 1/2 110 1/2 180 1 270 1 300 2 1.77 20 160 1/4 220 1/4 360 1/2 510 1/2 620 3/4 1.80 48 68 1/2 91 1/2 150 1 220 2 240 1.85 20 160 1/4 220 1/4 360 1/2 510 1 620 8 390 1/8 510 1/8 910 1/4 1.2K 1/4 1.90 1.95 1.96 2.00 2.07 2.10 2.15 2.16 18V 22V 24V 28V 430 2 510 3 560 3 680 750 3/4 820 1 1.0K 1 1.1K 1 1.3K 1.5 2 300 2 330 2 430 3 470 3 560 3 1 750 1 820 1 1.0K 1 1.2K 2 1.5K 2 1.5K 1/4 1.8K 1/4 2.0K 1/2 2.4K 1/2 2.7K 1/2 3.3K 1/2 15 220 1/8 270 1/4 470 1/2 680 1/2 820 1/2 1.0K 1 1.1K 1 1.5K 1 1.5K 1 1.8K 2 16 200 1/4 220 1/4 430 1/2 620 1/2 750 1 910 1 1.0K 1 1.2K 1 1.3K 1 1.6K 1 20 150 1/4 200 1/4 360 1/2 510 1/2 620 3/4 750 1 820 1 1.0K 1 1.1K 1 1.3K 2 26 120 1/4 160 1/2 300 1/2 390 1 470 1 560 1 620 1 820 2 910 2 1.1K 2 1 15 220 1/8 270 1/4 470 1/2 680 1/2 820 1/2 1.0K 1.1K 1 1.5K 1 1.5K 1 1.8K 2 20 150 1/4 200 1/4 360 1/2 510 1/2 620 3/4 680 3/4 820 1 1.0K 1 1.1K 1 1.3K 2 24 130 1/4 160 1/2 300 1/2 430 1 510 1 560 1 680 2 820 2 910 2 1.1K 2 16 200 1/4 240 1/4 430 1/2 620 1/2 750 1/2 910 1 1.0K 1 1.3K 1 1.3K 1 1.6K 1 15 200 1/8 270 1/4 470 1/2 680 1/2 820 1 910 1 1.1K 1 1.3K 1 1.5K 1 1.8K 1 20 150 1/4 200 1/4 360 1/2 510 1 620 1 750 1 820 1 1.0K 1 1.1K 2 1.3K 2 24 120 1/4 160 1/2 300 1/2 430 1 510 1 560 1 680 2 820 2 910 2 1.1K 2 25 120 1/4 160 1/2 270 1/2 390 1 470 1 560 1 620 2 820 2 910 2 1.1K 2 26 120 1/4 160 1/2 270 1/2 390 1 470 1 560 1 620 1 820 2 910 2 1.0K 2 48 62 1/2 82 1/2 150 1 200 1 240 1 300 2 330 2 430 3 470 3 560 3 16 180 1/8 240 1/4 430 1/2 620 1/2 750 1/2 910 3/4 1.0K 3/4 1.3K 1 1.3K 1 1.6K 1 15 200 1/8 270 1/4 470 1/2 680 1/2 820 1/2 1K 1 1.8K 1 1 1.1K 1 1.3K 1 1.5K 20 150 1/4 200 1/4 360 1/2 510 1 620 1 680 1 820 1 1.0K 1 1.1K 1 1.3K 1 24 120 1/4 160 1/2 300 1/2 430 1 510 1 560 1 680 2 820 2 910 2 1.1K 2 25 120 1/4 160 1/2 270 1/2 390 1 470 1 560 1 620 2 820 2 910 2 1.1K 2 30 100 1/4 130 1/2 240 1 330 1 390 1 470 2 510 2 680 2 750 2 910 2 40 75 1/2 100 1/2 180 1 270 1.5 300 1.5 360 1.5 430 2 510 2 560 3 680 3 45 68 1/2 91 1/2 160 1 220 2 270 2 330 2 360 2 430 3 510 3 620 3 16 180 1/8 240 1/4 430 1/2 620 1/2 750 1/2 910 3/4 1.1K 3/4 1.2K 1 1.3K 1 1.6K 1 20 150 1/4 200 1/4 360 1/2 510 1 620 1 680 1.0K 1 1.1K 1 1.3K 1 16 180 1/8 240 1/4 430 1/2 620 1/2 750 1/2 910 3/4 1.0K 3/4 1.2K 1 1.3K 1 1.6K 1 www.nkk.com 1 820 1 Z9 Keylocks 16V Rotaries 14V Slides 12V Tactiles 9V Tilt 6V Touch 5V Indicators VOLTAGE CURRENT Accessories FORWARD Programmable Illuminated PB Watt recommendations provide a margin to reduce heat rise and increase life. Z Supplement R If the source voltage is greater than the rated voltage of a lamp or LED, a ballast resistor must be connected in series with the lamp. The following circuit diagram and formula will assist in calculating the value of the required ballast resistor. Toggles Ballast Resistors BALLAST RESISTOR CALCULATIONS & RECOMMENDATIONS Rockers IF + VF E Where: R = E = VF = IF = Cathode Pushbuttons FORWARD Programmable Illuminated PB Keylocks Rotaries Slides IF V mA Ω W Ω W Ω W Ω W Ω W Ω W Ω W Ω W Ω W Ω W 20 150 1/4 200 1/4 360 1/2 510 1 620 1 750 1 820 1 1.0K 1 1.1K 2 1.3K 2 2.20 26 110 1/4 160 1/2 270 1/2 390 1 470 1 560 1 620 1 820 2 910 2 1.0K 2 30 91 1/2 130 1/2 220 1 330 1 390 1 470 2 510 2 680 2 750 2 820 3 2.25 20 150 1/4 200 1/4 360 1/2 510 1 620 1 750 1 820 1 1.0K 1 1.1K 2 1.3K 2 2.27 20 150 1/4 200 1/4 330 1/2 510 1/2 620 3/4 750 3/4 820 1 1.0K 1 1.0K 1 1.2K 1 2.30 20 130 1/4 180 1/4 330 1/2 510 1/2 620 3/4 680 3/4 820 1 1.0K 1 1.0K 1 1.2K 1 Tactiles Tilt 6V 9V 12V 14V 16V 18V 22V 24V 28V 2.35 40 68 1/4 91 1/2 160 1 240 1 300 2 330 2 390 2 510 3 560 3 620 3 20 110 1/4 160 1/4 330 1/2 470 1/2 560 1 680 1 750 1 1.0K 1 1.1K 1 1.3K 1 3.20 20 91 1/8 150 1/4 300 1/2 470 1/2 560 1/2 680 3/4 750 3/4 1.0K 1 1.0K 1 1.2K 1 3.30 20 91 1/8 150 1/4 300 1/2 430 1/2 560 1/2 680 3/4 750 3/4 1.0K 1 1.0K 1 1.2K 1 3.40 20 82 1/8 130 1/4 300 1/2 430 1/2 560 1/2 680 3/4 750 3/4 1.0K 1 1.0K 1 1.2K 1 3.50 20 75 1/4 120 1/8 270 1/4 430 1/2 560 1 620 1 750 1 1.0K 1 1.1K 2 1.3K 2 20 68 1/4 120 1/8 270 1/4 430 1/2 560 1 620 1 750 1 1.0K 1 1.1K 2 1.3K 2 30 47 1/8 82 1/4 180 1/2 270 1 360 1 430 1 470 2 620 2 680 2 820 2 4.00 4.20 4.30 Touch 5V 2.80 3.90 Indicators Resistor Value (Ohms) Source Voltage (V) Forward Voltage (V) Forward Current (A) VF 3.60 26 47 1/8 91 1/4 200 1/2 300 1/2 390 1 470 1 560 1 750 1.5 820 30 39 1/8 75 1/4 180 1/2 270 1 330 1 430 1 470 2 620 2 680 2 820 2 30 36 1/8 68 1/4 180 1/2 270 1 330 1 390 1 470 2 620 2 680 2 820 2 26 39 1/8 82 1/4 200 1/2 330 1/2 390 1 470 1 560 1 750 1.5 1.5 1.0K 2 820 1.5 1.0K 2 30 33 1/8 68 1/4 130 1/2 270 1 330 1 390 1 470 2 620 2 680 2 820 2 20 39 1/8 91 1/8 240 1/4 390 1/2 510 1 620 1 680 1 910 1 1.0K 1 1.2K 1 30 27 1/8 62 1/4 160 1/2 270 1 330 1 390 1 470 2 620 2 680 2 820 2 20 36 1/8 82 1/8 240 1/4 390 1/2 470 1/2 560 1 680 1 910 1 1.0K 1 1.2K 1 4.40 26 24 1/8 62 1/4 180 1/2 300 1/2 390 1 470 1 560 1 680 1.5 750 1.5 910 1.5 5.00 25 ––– ––– 47 1/8 160 1/2 300 1 360 1 470 1.5 560 1.5 680 2 820 2 1.0k 2.5 12.5 ––– ––– 82 1/8 330 1/2 160 1 560 1/4 910 1/2 1.1K 1 1.5K 1 1.6K 1 1.8K 1 25 ––– ––– 43 1/8 160 1/4 300 1/2 360 1/2 470 1 560 1 680 1 820 45 ––– ––– 24 1/8 91 1/2 160 1 200 1 270 1.5 300 1.5 390 2 430 1.5 270 3 330 3 390 5.50 Accessories IF SOURCE VOLTAGE E VOLTAGE CURRENT 12.00 Z E – VF R = Anode – Watt recommendations provide a margin to reduce heat rise and increase life. 3.80 Supplement R If the source voltage is greater than the rated voltage of a lamp or LED, a ballast resistor must be connected in series with the lamp. The following circuit diagram and formula will assist in calculating the value of the required ballast resistor. 24.00 Z10 1.5 1.0K 1.5 3 560 3 3 52 ––– ––– 20 1/8 82 1/2 150 1 180 1.5 220 470 3 12.5 ––– ––– ––– ––– ––– ––– ––– ––– 160 1/8 330 1/8 510 1/4 820 1/2 1/2 1.3K 1 15 ––– ––– ––– ––– ––– ––– ––– ––– 150 1/8 270 1/8 400 1/4 680 1/2 820 1/2 1.5K 1 20 ––– ––– ––– ––– ––– ––– ––– ––– 100 1/8 200 1/4 300 1/2 510 820 1 620 1 1K 1 620 1 26 ––– ––– ––– ––– ––– ––– ––– ––– 82 1/8 160 1/4 240 1 390 1 470 1 10 ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– 400 1/8 13 ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– 330 1/2 www.nkk.com