Toggles Series KP Rockers General Specifications Electrical Capacity (Resistive Load) D Contact Resistance: 200 milliohms maximum Insulation Resistance: 100 megohms minimum @ 250V DC Dielectric Strength: 1,000V AC minimum between contacts for 1 minute minimum 1,500V AC minimum between contacts & case for 1 minute minimum Mechanical Life: 5,000,000 operations minimum; 1,000,000 operations minimum for custom Rectangular Switch/Cap Assembly (at center of cap) Electrical Life: 5,000,000 operations minimum Nominal Operating Force: KP01: 1.9N maximum for Tactile & Nontactile models (at center of cap) KP02: 1.6N maximum for Tactile, Nontactile & Tactile/Audible models (at center of cap) Travel: KP01: Pretravel .122" (3.1mm); Overtravel .055" (1.4mm); Total Travel .177" (4.5mm) KP02: Pretravel .091" (2.3mm); Overtravel .047" (1.2mm); Total Travel .138" (3.5mm) Materials & Finishes Plunger/Upper Housing: Lower Housing: Movable Contact: Stationary Contacts: Switch Terminals: Slides Tactiles Tilt Environmental Data Operating Temperature Range: Humidity: Vibration: Shock: Installation Touch PCB Processing Soldering: Cleaning: Standards & Certifications Flammability Standards: Accessories Indicators 100mA maximum @ 12V DC Other Ratings Rotaries Keylocks Programmable Illuminated PB Pushbuttons Low Level: Cap Installation Force : Supplement Miniature Audio/Video Pushbuttons D36 Polyacetal Glass fiber reinforced PBT (UL94V-0) Stainless steel with gold plating Gold over copper alloy Brass with tin plating -25C through +50C (-13F through +122F) 90-95% humidity for 240 hours @ 40C (104F) 10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range & returning in 1 minute; 3 right angled directions for 2 hours 51G (500m/s2) acceleration (tested in 6 right angled directions, with 5 shocks in each direction) 50.0N maximum downward force on actuator Wave Soldering. See Profile A in Supplement section. Manual Soldering. See Profile A in Supplement section. These devices are not process sealed. Hand clean locally using alcohol based solution. UL94V-0 lower housing The KP Series pushbuttons have not been tested for UL recognition or CSA certification. These switches are designed for use in a low-voltage, low-current, logic-level circuit. When used as intended in a logic-level circuit, the results do not produce hazardous energy. www.nkkswitches.com Toggles Series KP Rockers Distinctive Characteristics Pushbuttons KP series offers a complete switch solution for all broadcast panel needs, including home keys and the rectangular switch/cap assembly. Distinct, long total travel of .177" (4.5mm) for KP01 or shorter stroke of .138" (3.5mm) for KP02. D Available with super bright red/green or amber/blue bicolor LED or RGB LED. The RGB LED full color spectrum in a switch package provides unlimited color combinations. Keylocks Unique actuation guide gives positive indication of circuit transfer as well as smooth and silent operation. Programmable Illuminated PB Miniature Audio/Video Pushbuttons Rotaries Choices of tactile, nontactile or tactile/audible actuation. Slides Compact design with height of .906" (23.0mm) from PC board to top of cap. (Same height as programmable SmartSwitchTM.) Tactiles Flat, sculptured or home key square caps in three common sizes for design flexibility in audio/video applications. Touch Tilt Twin contacts with gold plating assure high reliability and long life of 5,000,000 operations minimum. Supplement Accessories Indicators Actual Size www.nkkswitches.com D37 Series KP Toggles Miniature Audio/Video Pushbuttons TYPICAL SWITCH 01 15A N B K D G03 15A SPST OFF (ON) ( ) = Momentary Normally Open Contacts Travel & Force 01 Stroke: 4.5mm (.177") Actuation Force: 1.9N 02 Stroke: 3.5mm (.138") Actuation Force: 1.6N Black only Plungers Pole & Circuit A 9.2mm Plunger for 12.0mm Cap B 11.6mm Plunger for 15.0mm & 17.4mm Caps Contacts & Terminals G03 Gold Contacts and Straight PC Terminals; 100mA @ 12V DC Actuation 01 C Tactile N Nontactile 02 C Tactile N Nontactile S Tactile/Audible Tilt Tactiles Slides Rotaries K Housing Keylocks Programmable Illuminated PB Pushbuttons Rockers KP DESCRIPTION FOR TYPICAL ORDERING EXAMPLE Touch KP0115ANBKG036CF-2SJB Indicators 11.6mm Plunger and 15.0mm Sculptured Cap Clear Lens and White Diffuser Accessories SPST OFF-Momentary ON Circuit Normally Open Contacts Super Bright Red/Green Bicolor LED Nontactile Actuation Black Housing Gold Contacts with 100mA Rating Supplement Straight PC Terminals D38 www.nkkswitches.com Series KP Toggles Miniature Audio/Video Pushbuttons ORDERING EXAMPLE S JB 11 Rockers 2 LEDs 6CF Super Bright Red/Green Bicolor 6DG Super Bright Amber/Blue Bicolor RGB Red/Green/Blue Cap Colors Cap Types F Flat S Sculptured T Home Key JB Clear Lens & White Diffuser D Bicolor Alternating Legend Caps * See Note JCF Red/Green JDG Amber/Blue 2 15.0mm Square 3 17.4mm Square ** See Note Rotaries 12.0mm Square Alternating Legends Notes * RGB LED Page D44 ** Rectangular Cap Page D45 11 ON (pos) 12 ON (neg) OFF (neg) 13 START STOP 14 OPEN CLOSE OFF (pos) Slides 1 Keylocks Cap Sizes Programmable Illuminated PB Pushbuttons 6CF Tilt Tactiles Contact factory for custom options. Part Numbers for Alternating Legends Amber/Blue Home Key Cap Touch Sculptured Cap Part Number Part Number Part Number 12mm Square AT3093JCF11 ~ AT3093JCF14 AT3090JCF11 ~ AT3090JCF14 AT3096JCF11 ~ AT3096JCF14 15mm Square AT3094JCF11 ~ AT3094JCF14 AT3091JCF11 ~ AT3091JCF14 AT3097JCF11 ~ AT3097JCF14 17.4mm Square AT3095JCF11 ~ AT3095JCF14 AT3092JCF11 ~ AT3092JCF14 AT3098JCF11 ~ AT3098JCF14 12mm Square AT3093JDG11 ~ AT3093JDG14 AT3090JDG11 ~ AT3090JDG14 AT3096JDG11 ~ AT3096JDG14 15mm Square AT3094JDG11 ~ AT3094JDG14 AT3091JDG11 ~ AT3091JDG14 AT3097JDG11 ~ AT3097JDG14 17.4mm Square AT3095JDG11 ~ AT3095JDG14 AT3092JDG11 ~ AT3092JDG14 AT3098JDG11 ~ AT3098JDG14 Refer to Ordering Table for Alternating Legend that corresponds with last 2 digits of part number. Indicators Flat Cap Accessories Red/Green Cap Size Supplement Color www.nkkswitches.com D39 Series KP Toggles Miniature Audio/Video Pushbuttons POLE & CIRCUIT Rockers Plunger Position ( ) = Momentary KP0115A Down Normal (ON) Normally Open Throw & Switch Schematic Down Note: Switch terminals "1" & "1a" are actually marked on the switch. 1 (COM) 1-1a SPST 1a ACTUATION D C Tactile KP01 or KP02 N HOUSING S Nontactile KP01 or KP02 K Tactile/Audible KP02 only Black only CONTACTS, TERMINALS, & RATING G03 Gold Contacts Straight PC Terminals 100mA @ 12V DC Rotaries SUPER BRIGHT BICOLOR LED SPECIFICATIONS The electrical specifications shown are determined at a basic temperature of 25C. Slides Tactiles Tilt Touch Indicators OFF KP0215A (-) L1 ATTENTION ELECTROSTATIC SENSITIVE DEVICES (+) COM 6 CF Red or Amber 6DG (-) L2 Green or Blue Colors Red Green Amber Blue Unit LEDs are an integral Minimum Luminous Intensity part of the switch and are not available Standard Luminous Intensity separately. IV 230 220 204 113 mcd IV 290 270 340 188 mcd Maximum Forward Current LED circuit is isolated and requires an external power Typical Forward Current source. I FM 30 25 mA If the source voltage exceeds the rated voltage, a ballast resistor is required. The resistor value can be calculated by using the formula in the Supplement section. 30 25 25 for Amber 22 for Amber IF 15 5 20 20 mA Forward Voltage VF 2.0 3.1 2.1 3.2 V Power Peak Dissipation PD 72 88 75 100 mW VRM 5 7 4 4 V 620 ~ 630 528 ~ 538 583 ~ 595 464 ~ 476 nm I F 0.40 0.36 0.40 0.33 mA/C Maximum Reverse Voltage Wavelength at Peak Emission Current Reduction Rate Above 25C Ambient Temperature Range Supplement Accessories Normal Model SP Keylocks Programmable Illuminated PB Pushbuttons Pole Connected Terminals -25 ~ +50 Amber can be achieved by simultaneous illumination of Red & Green. Purple can be achieved by simultaneous illumination of Amber & Blue. D40 www.nkkswitches.com -25 ~ +50 C Series KP Toggles Miniature Audio/Video Pushbuttons PLUNGERS (11.6) .457 (6.4) .252 11.6mm Plunger is designed with a wider neck to hold both the 15.0mm and 17.4mm Caps. Pushbuttons (6.4) .252 9.2mm Plunger is designed with a narrower neck to hold the 12.0mm Cap. 11.6mm Plunger for 15.0mm & 17.4mm Caps Rockers B (9.2) .362 CAP TYPES & COLORS D Caps for Bicolor and RGB (6.5) .256 (6.5) .256 (12.0) Sq .472 2 15.0mm Square F T AT3078 Sculptured Cap AT3086 Home Key Cap (2.6) Dia .102 Keylocks S AT3083 Flat Cap (6.5) .256 (12.0) Sq .472 (12.0) Sq .472 Rotaries F Used on A Plunger Used on B Plunger S AT3084 Flat Cap T AT3079 Sculptured Cap Slides 12.0mm Square AT3087 Home Key Cap (7.0) .276 (7.0) .276 (7.0) .276 Tactiles 1 Programmable Illuminated PB 9.2mm Plunger for 12.0mm Cap A (2.6) Dia .102 F S AT3085 Flat Cap (7.0) .276 Tilt Touch Used on B Plunger T AT3080 Sculptured Cap AT3088 Home Key Cap Indicators 17.4mm Square (7.0) .276 (7.0) .276 (2.6) Dia .102 (17.4) Sq .685 (17.4) Sq .685 (17.4) Sq .685 Supplement 3 (15.0) Sq .591 (15.0) Sq .591 Accessories (15.0) Sq .591 www.nkkswitches.com D41 Toggles Series KP Caps for Alternating Legends 1 12.0mm Square Rockers F F (2.6) Dia .102 (6.5) .256 N D (6.5) .256 N 15.0mm Square AT3096 Home Key Cap O (6.5) .256 (12.0) Sq .472 2 T AT3090 Sculptured Cap O Pushbuttons S AT3093 Flat Cap N (12.0) Sq .472 (12.0) Sq .472 Used on B Plunger S AT3094 Flat Cap T AT3091 Sculptured Cap AT3097 Home Key Cap (7.0) .276 N O N N (7.0) .276 O (7.0) .276 O Programmable Illuminated PB Used on A Plunger O (2.6) Dia .102 (15.0) Sq .591 (15.0) Sq .591 3 Rotaries Keylocks Miniature Audio/Video Pushbuttons 17.4mm Square Used on B Plunger S AT3095 Flat Cap T AT3092 Sculptured Cap AT3098 Home Key Cap (7.0) .276 (7.0) .276 N O N N O (7.0) .276 O Slides F (15.0) Sq .591 (2.6) Dia .102 Tactiles Tilt JB (17.4) Sq .685 (17.4) Sq .685 (17.4) Sq .685 Lens & Diffuser Colors Available: Clear Lens Clear/White Touch Standard Alternating Legend Pairs 11 Accessories Indicators White Diffuser Materials & Finishes: Lens - Polycarbonate with glossy finish Diffuser - Polycarbonate with textured finish Optional Protective Guard AT4170 available; contact factory. ON OFF Green/Red or Blue/Amber 12 ON OFF 13 Green/Red or Blue/Amber START STOP 14 Green/Red or Blue/Amber Supplement Cap illumination is alternating Green/Red or Blue/Amber; legend text is black. Contact factory for other Alternating Legends. Legend illustrations are approximate representations of the actual characters on the filters. D42 www.nkkswitches.com OPEN CLOSE Green/Red or Blue/Amber Series KP Toggles Miniature Audio/Video Pushbuttons TYPICAL SWITCH DIMENSIONS COM L2 (7.62) .300 (1.3) Dia Typ .051 1 (0.9) Dia Typ .035 (0.6) Dia Typ .024 L1 1a L1 C L2 (5.08) +- 0.5 .200 (2.54) Typ .100 (12.7) .500 (15.0) Sq .591 (6.0) .236 (4.5) .177 (12.7) .500 Pushbuttons (0.6) Typ .024 1 (12.0) Sq .472 (1.1) .043 (6.5) (5.0) (11.5) .256 .197 .453 (23.0) .906 1a (4.5) .177 (12.7) .500 (0.25) .010 (7.62) .300 (0.37) Typ .015 (12.7) .500 KP0115ACAKG036CF-1SJB 15.0mm Square Cap (3.6) .142 (0.3) .012 (0.6) Typ .024 COM L2 (7.62) .300 (1.3) Dia Typ .051 1 (0.9) Dia Typ .035 (0.6) Dia Typ .024 1 (15.0) Sq .591 (1.1) .043 (7.0) (4.5) (11.5) .276 .177 .453 (23.0) .906 (0.37) Typ .015 1a (4.5) .177 (12.7) .500 (0.25) .010 (7.62) .300 L1 1a L1 C L2 (5.08) +- 0.5 .200 (2.54) Typ .100 (12.7) .500 (15.0) Sq .591 (6.0) .236 (4.5) .177 (12.7) .500 Keylocks (6.4) .252 (12.7) .500 KP0115ANBKG036CF-2SJB 17.4mm Square Cap (0.3) .012 (0.37) Typ .015 (0.6) Typ .024 L2 COM (7.62) .300 (1.3) Dia Typ .051 1 (0.9) Dia Typ .035 (0.6) Dia Typ .024 1 (17.4) Sq .685 1a (4.5) .177 (12.7) .500 (0.25) .010 (1.1) .043 (11.5) (7.0) (4.5) .453 .276 .177 (23.0) .906 (7.62) .300 L1 1a L1 C L2 (5.08) +- 0.5 .200 (4.5) .177 (12.7) .500 (2.54) Typ .100 (12.7) .500 (15.0) Sq .591 (6.0) .236 Tactiles (3.6) .142 (12.7) .500 Tilt (6.4) .252 D Programmable Illuminated PB (0.3) .012 Rotaries (3.6) .142 Slides (6.4) .252 Rockers 12.0mm Square Cap Bicolor Alternating Legend * 15.0mm Square Cap (0.6) Typ .024 L2 COM (7.62) .300 (1.3) Dia Typ .051 (0.9) Dia Typ .035 (0.6) Dia Typ .024 1 (15.0) Sq .591 (1.1) .043 (7.0) (4.5) (11.5) .276 .177 .453 (23.0) .906 1a (4.5) .177 (12.7) .500 (0.25) .010 (7.62) .300 (0.37) Typ .015 L1 (5.08) +- 0.5 .200 (6.0) .236 (12.7) .500 (15.0) Sq .591 1 Indicators (0.3) .012 1a L1 C L2 (4.5) .177 (12.7) .500 Accessories (3.6) .142 (2.54) Typ .100 (12.7) .500 KP0115ANBKG036DG-2SJDG www.nkkswitches.com D43 Supplement (6.4) .252 Touch KP0115ANBKG036CF-3SJB Series KP Toggles Miniature Audio/Video Pushbuttons RGB Note: For applications that require white illumination, contact factory. Red ATTENTION Common Anode (+) RGB ELECTROSTATIC SENSITIVE DEVICES Green Color Red Green Blue Unit Maximum Forward Current I FM 30 30 30 mA Typical Forward Current IF 20 14 9 mA Forward Voltage VF 2.0 2.9 2.9 V Power Peak Dissipation PD 60 80 80 mW Maximum Reverse Voltage VRM 5 5 5 V Dominant Wavelength d 621.5 522.5 472.5 nm Current Reduction Rate Above 25C IF 0.50 0.50 0.50 mA/C Blue Ambient Temperature Range -25 ~ +50 C TYPICAL SWITCH DIMENSIONS 12.0mm Square Cap with RGB LED Common Anode (+) B(-) 1 Terminal Detail R(-) G(-) Rotaries D The electrical specifications shown are determined at a basic temperature of 25C. LEDs are an integral part of the switch and are not available separately. LED circuit is isolated and requires an external power source. If the source voltage exceeds the rated voltage, a ballast resistor is required. The resistor value can be calculated by using the formula in the Supplement Section. 1a Keylocks Programmable Illuminated PB Pushbuttons Rockers LED SPECIFICATIONS (6.4) .252 (7.62) .300 (0.3) .012 (3.6) .142 (0.5) Typ .020 (0.6) Typ .024 (7.62) .300 (1.3) Dia Typ .051 Tactiles KP0115ACAKG03RGB-1SJB (12.0) Sq .472 (1.1) .043 (11.5) (6.5) (5.0) .256 .197 .453 (23.0) .906 (4.5) .177 1 (3.81) .150 1a Slides 1 (12.7) .500 See Terminal Detail (1.52) Typ .060 (0.2) .008 (0.9) Dia Typ .035 (0.7) Dia Typ .028 R(-) G(-) (4.5) .177 (12.7) .500 (3.81) .150 (1.52) Typ .060 (12.7) .500 (12.7) .500 (15.0) Sq .591 (4.0) .157 1a B(-) (+) Tilt 15.0mm & 17.4mm Square Caps with RGB LED Common Anode (+) B(-) 1 1a Touch 15.0mm Cap Terminal Detail R(-) G(-) (0.5) Typ .020 (6.4) .252 KP0115ANBKG03RGB-2SJB (7.62) .300 (0.3) .012 (0.6) Typ .024 (17.4) Sq .685 KP0115ANBKG03RGB-3SJB D44 (1.1) .043 (11.5) (7.0) (4.5) .276 .177 .453 (23.0) .906 1 (3.81) .150 (12.7) .500 1a Supplement (3.6) .142 (7.62) .300 (1.3) Dia Typ .051 1 Accessories Indicators (15.0) Sq .591 See Terminal Detail (1.52) Typ .060 (0.2) .008 (4.0) .157 17.4mm Cap www.nkkswitches.com (4.5) .177 (12.7) .500 (15.0) Sq .591 (0.9) Dia Typ .035 (0.7) Dia Typ .028 1a B(-) (+) R(-) G(-) (1.52) Typ .060 (12.7) .500 (4.5) .177 (12.7) .500 (3.81) .150 Series KP Toggles Miniature Audio/Video Pushbuttons RECTANGULAR CAP ASSEMBLY Switch/Rectangular Cap Assembly 1 L- 1a (0.6) .024 (0.45) Sq Typ .018 D (0.3) .012 (7.0) .276 (17.4) .685 (23.0) .906 (12.7) .500 (15.0) Sq .591 (6.0) .236 KP0115ACBKG03CJB for Tactile KP0115ANBKG03CJB for Nontactile See below for complete assembly of switch, LEDs and LED holders. (+) (-) Color Red Unit Maximum Forward Current I FM 30 mA Typical Forward Current IF 20 mA Forward Voltage VF 2.0 V Maximum Reverse Voltage VRM 4 V Dominant Wavelength d 623 nm Current Reduction Rate Above 25C I F 0.32 mA/C -25 ~ +50 C Ambient Temperature Range Rotaries The electrical specifications shown are determined at a basic temperature of 25C. Center LED is an integral part of the switch. LEDs are not sold separately. LED circuits are isolated and require an external power source. If the source voltage exceeds the rated voltage, a ballast resistor is required. The resistor value can be calculated by using the formula in the Supplement Section. Keylocks LED SPECIFICATIONS Tactiles Contact factory for other LED colors. ASSEMBLY & INSTALLATION INSTRUCTIONS (0.9) Dia Typ .035 (2.54) .100 Cathode LED (4.5) .177 Tilt (3.1) Dia .122 (1.3) Dia Typ .051 (2.54) .100 (5.9) .232 (4.8) .189 LED (6.7) .264 (10.4) .409 1 L- 1a (0.8) Dia Typ .031 (12.7) .500 (7.62) (12.7) (22.86) .300 .500 .900 (2.54) .100 LED Holder Switch/Rectangular Cap assembly has 3 LEDs to achieve bright and even illumination. One LED (in center of switch bottom) is an integral part of the switch; the other 2 LEDs and 2 LED Holders are packaged separately. Switch L+ Touch LED Holder Footprint Indicators (12.7) .500 PCB www.nkkswitches.com Slides (2.54) .100 L+ 1 Install LED into LED Holder (quantity 2). 2 Solder LEDs and LED Holders into PCB. 3 Solder switch into PCB making sure that the two outer LEDs and LED Holders clear the bottom side opening of the cap. D45 Accessories (7.62) .300 Supplement (12.7) .500 (34.8) 1.370 Programmable Illuminated PB Pushbuttons (4.5) .177 (3.6) .142 Rockers CAP ASSEMBLY DIMENSIONS Toggles Series KP ASSEMBLY INSTRUCTIONS FOR SQUARE CAPS Rockers ATTENTION Cap Orientation ELECTROSTATIC SENSITIVE DEVICES Notch Pushbuttons As shown in the accompanying illustration, the cap and plunger are designed with tabs and notches to assure proper orientation of the cap on the switch. D Tab Step Plunger Notches Removal of Cap Assembly & Separation of Lens & Diffuser Holding the switch tightly, pull the cap off the switch. Once the cap assembly is released from the plunger, the lens and diffuser can be separated. Pry up the lens with fingernail or flat tip screwdriver inserted at the step on the diffuser. Keylocks Programmable Illuminated PB Miniature Audio/Video Pushbuttons Installation or Replacement of Cap Rotaries Cap Assembly Supplement Accessories Indicators Touch Tilt Tactiles Slides After aligning notches with tabs, join the lens and diffuser. Hold the switch tightly without touching the terminals. Firmly press the cap onto the plunger by applying pressure from one side to the other until both are snapped together. D46 www.nkkswitches.com Plunger Switch Series KP Toggles Miniature Audio/Video Pushbuttons LEGENDS Rockers NKK Switches can provide custom legends for caps. Contact factory for more information. Suggested Printable Areas for KP Lens Recommended Methods: OP ST Printing on Diffuser is not advisable. Film Insert Diffuser D Rectangular Cap Lens Keylocks Shaded areas are suggested printable areas for Lens. Sculptured Cap Lens (28.75) 1.132 (8.97) Dia .353 (10.5) Dia .413 (0.76) Typ .030 (11.48) Dia .452 (13.0) Dia .512 (0.76) Typ .030 (13.77) Dia .542 (15.3) Dia .602 (0.76) Typ .030 (13.77) .542 (15.3) .602 (0.76) Typ .030 Suggested Printable Areas for KP Film Insert Shaded areas are suggested printable areas for Film Insert. Rectangular Film Insert (0.5) R .020 (0.76) Typ .030 (11.28) Sq .444 (12.8) Sq .504 (0.76) Typ .030 (11.88) Dia .468 (13.4) Sq .528 (0.76) Typ .030 (8.28)Dia .326 (9.8) Sq .386 (0.76) Typ .030 (11.28) Dia .444 (12.8) Sq .504 (0.76) Typ .030 (11.88) Dia .468 (13.4) Sq .528 Touch (0.5) R .020 (0.5) R .020 (0.5) R .020 (28.75) 1.132 (33.0) 1.299 (0.76) Typ .030 (13.77) .542 (15.6) .614 (0.91) Typ .036 Film Insert Material and Thickness: Clear Polyester; 4 mil (100) maximum thickness Supplement (8.28) Sq .326 (9.8) Sq .386 (0.5) R .020 (0.5) R .020 (0.5) R .020 (2.125) Typ .084 Accessories Sculptured or Home Key Cap Film Inserts Flat Cap Film Inserts Slides (13.4) Sq .528 (17.4) Sq .685 (12.8) Sq .504 (15.0) Sq .591 Tactiles (9.8) Sq .386 (12.0) Sq .472 Rotaries (30.28) 1.192 Tilt Flat Cap Lens Indicators Laser Etch on clear lens, Screen Print, or Pad Print on lens. Laser Print on film insert. Epoxy based ink is recommended. Programmable Illuminated PB Pushbuttons Lens www.nkkswitches.com D47