[{"data":1,"prerenderedAt":273},["ShallowReactive",2],{"component:pc817:en":3},{"component":4,"localizationFallbackIssues":227,"related":228,"equivalentSlugs":272},{"schemaVersion":5,"governance":6,"id":18,"mpn":19,"slug":18,"primaryCategory":20,"manufacturers":21,"lifecycleStatus":26,"shortDescription":27,"deepTechnicalOverview":28,"packages":29,"absoluteMaximums":65,"recommendedOperating":74,"parametricAttributes":79,"gotchas":163,"datasheetUrl":17,"documentationSources":183,"applicationCircuits":191,"equivalents":196,"mountedOnBoards":216,"seo":217},"1.0.0",{"publication":7,"verification":10,"provenance":15},{"status":8,"publishedDate":9},"published","2026-11-03",{"status":11,"verifiedDate":9,"verifiedBy":12,"checklist":13},"verified","Gemini (independent documentary review against Sharp Corporation D2-A03101EN; verified pinout, DIP-4 and SMD-4 packages, absolute maximums, electrical parametric limits, gotchas, six-locale localization sidecars, and catalog release validation; owner publication GO, no physical bench signoff)",{"schema":14,"technicalFacts":14,"relationships":14,"sources":14},true,{"sourceUrls":16},[17],"https:\u002F\u002Fglobal.sharp\u002Fproducts\u002Fdevice\u002Flineup\u002Fdata\u002Fpdf\u002Fdatasheet\u002Fpc817xxnsz1b_e.pdf","pc817","PC817","interface_bridge",[22,23,24,25],"Sharp","Everlight Electronics","Lite-On","onsemi","active","Sharp PC817 (PC817X series) 4-pin phototransistor output optocoupler in DIP-4 and SMD-4; 5000 Vrms isolation, 80 V collector-emitter breakdown, and 50% to 600% CTR current transfer ratio.","The PC817 (PC817X series) is an industry-standard 4-pin general-purpose photocoupler (optocoupler) manufactured by Sharp Corporation (datasheet D2-A03101EN). The device optically couples a gallium arsenide (GaAs) infrared emitting diode (IRED) on the input side with a high-voltage NPN silicon phototransistor on the output side, providing 5000 Vrms galvanic isolation between low-voltage logic domains and high-voltage industrial circuits. The modern PC817X series features an 80 V collector-emitter breakdown rating (VCEO) and a maximum continuous collector current of 50 mA, making it ideal for noise isolation in switching power supplies (SMPS), microcontroller input isolation from noisy 24 V PLC field lines, and driving external relay or solenoid transistors without ground loops. Current transfer ratio (CTR) is classified into four standard grading ranks: Rank A (80% to 160%), Rank B (130% to 260%), Rank C (200% to 400%), and Rank D (300% to 600%) measured at IF = 5 mA and VCE = 5 V. Standard packages include 4-pin plastic dual in-line (DIP-4) through-hole and gull-wing surface mount (SMD-4) with 2.54 mm pin pitch.",[30,57],{"packageType":31,"pinCount":32,"bodyDimensionsMm":33,"pitchMm":37,"thermalResistanceThetaJA":38,"pins":39},"DIP-4",4,{"length":34,"width":35,"height":36},4.58,6.5,3.5,2.54,350,[40,46,50,54],{"pinNumber":41,"pinName":42,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":45},1,"A","passive","none","Anode of the input GaAs infrared emitting diode (IRED); connect to positive control signal via series current-limiting resistor",{"pinNumber":47,"pinName":48,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":49},2,"K","Cathode of the input GaAs infrared emitting diode (IRED); sink to ground or logic driver to activate input current",{"pinNumber":51,"pinName":52,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":53},3,"E","Emitter terminal of output NPN phototransistor; connect to isolated ground in common-emitter configuration or load in emitter-follower",{"pinNumber":32,"pinName":55,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":56},"C","Collector terminal of output NPN phototransistor; pull up to isolated DC supply rail with external resistor (withstands up to 80V VCEO)",{"packageType":58,"pinCount":32,"bodyDimensionsMm":59,"pitchMm":37,"thermalResistanceThetaJA":38,"pins":60},"SMD-4",{"length":34,"width":35,"height":36},[61,62,63,64],{"pinNumber":41,"pinName":42,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":45},{"pinNumber":47,"pinName":48,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":49},{"pinNumber":51,"pinName":52,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":53},{"pinNumber":32,"pinName":55,"electricalType":43,"isFiveVoltTolerant":14,"internalPull":44,"description":56},{"supplyVoltageMaxV":66,"inputVoltageMaxV":67,"outputCurrentMaxA":68,"powerDissipationMaxW":69,"operatingTempMinC":70,"operatingTempMaxC":71,"storageTempMinC":72,"storageTempMaxC":73},80,6,0.05,0.2,-30,100,-55,125,{"supplyVoltageMinV":51,"supplyVoltageTypV":75,"supplyVoltageMaxV":76,"ambientTempMinC":77,"ambientTempMaxC":78},5,35,-25,85,[80,86,91,95,101,107,114,121,126,132,137,144,149,154,160],{"symbol":81,"name":82,"typicalValue":83,"minValue":83,"unit":84,"testCondition":85},"V_iso","Isolation Voltage",5000,"Vrms","AC 1 min, 40-60% RH",{"symbol":87,"name":88,"typicalValue":66,"minValue":66,"unit":89,"testCondition":90},"V_CEO","Collector-Emitter Breakdown Voltage","V","IC = 0.1 mA, IF = 0",{"symbol":92,"name":93,"typicalValue":67,"minValue":67,"unit":89,"testCondition":94},"V_ECO","Emitter-Collector Breakdown Voltage","IE = 10 µA, IF = 0",{"symbol":96,"name":97,"typicalValue":98,"maxValue":99,"unit":100},"I_F","Continuous Forward Current",20,50,"mA",{"symbol":102,"name":103,"typicalValue":104,"maxValue":105,"unit":89,"testCondition":106},"V_F","Forward Voltage",1.2,1.4,"IF = 20 mA",{"symbol":108,"name":109,"typicalValue":110,"maxValue":111,"unit":112,"testCondition":113},"I_R","Reverse Current","—",10,"µA","VR = 4 V",{"symbol":115,"name":116,"typicalValue":117,"maxValue":118,"unit":119,"testCondition":120},"C_t","Terminal Capacitance",30,250,"pF","V = 0, f = 1 kHz",{"symbol":122,"name":123,"typicalValue":110,"maxValue":71,"unit":124,"testCondition":125},"I_CEO","Collector Dark Current","nA","VCE = 50 V, IF = 0",{"symbol":127,"name":128,"typicalValue":71,"minValue":99,"maxValue":129,"unit":130,"testCondition":131},"CTR","Current Transfer Ratio",600,"%","IF = 5 mA, VCE = 5 V",{"symbol":133,"name":134,"typicalValue":135,"maxValue":69,"unit":89,"testCondition":136},"V_CE(sat)","Collector-Emitter Saturation Voltage",0.1,"IF = 20 mA, IC = 1 mA",{"symbol":138,"name":139,"typicalValue":140,"minValue":141,"unit":142,"testCondition":143},"R_ISO","Isolation Resistance","1e11","5e10","Ω","DC 500 V, 40-60% RH",{"symbol":145,"name":146,"typicalValue":147,"maxValue":41,"unit":119,"testCondition":148},"C_f","Floating Capacitance",0.6,"V = 0, f = 1 MHz",{"symbol":150,"name":151,"typicalValue":66,"unit":152,"testCondition":153},"f_c","Cut-Off Frequency","kHz","VCE = 5 V, IC = 2 mA, RL = 100 Ω, -3 dB",{"symbol":155,"name":156,"typicalValue":32,"maxValue":157,"unit":158,"testCondition":159},"t_r","Rise Time",18,"µs","VCE = 2 V, IC = 2 mA, RL = 100 Ω",{"symbol":161,"name":162,"typicalValue":51,"maxValue":157,"unit":158,"testCondition":159},"t_f","Fall Time",[164,169,173,178],{"title":165,"severity":166,"description":167,"mitigationStrategy":168},"CTR Degradation Over Operating Lifetime and Elevated Temperature","warning","The Current Transfer Ratio (CTR) of GaAs-based infrared LEDs naturally degrades over operational lifetime (typically dropping 10% to 30% after several thousand hours at elevated temperatures) and exhibits a negative temperature coefficient at high junction temperatures.","Design input drive circuits with a 2x to 3x safety overdrive margin (e.g. driving IF = 5 to 10 mA for a required IC = 2 mA) so switching performance and saturation are preserved over the product lifecycle.",{"title":170,"severity":166,"description":171,"mitigationStrategy":172},"Slow Switching Speed and Turn-Off Delay with High Load Resistors","The PC817 is a general-purpose phototransistor coupler with typical switching times of 3 to 18 µs; using a high pull-up resistor (RL >= 10 kΩ) charges parasitic Miller capacitance slowly, extending fall\u002Fturn-off times to over 50 µs and limiting digital baud rates to below 10 kHz.","For digital communication above 10 kHz or PWM switching, lower the collector pull-up resistor (1 kΩ to 2.2 kΩ) with higher LED drive current, or use high-speed logic optocouplers such as the 6N137.",{"title":174,"severity":175,"description":176,"mitigationStrategy":177},"Input Reverse Voltage Limit of 6 V Destroys IRED on Reverse Polarity","critical","The internal GaAs infrared emitter diode has an absolute maximum reverse voltage rating VR of only 6 V; reverse polarity spikes on input control lines or AC ringing quickly cause reverse junction breakdown and destroy the internal LED.","Place an antiparallel protection diode (such as a 1N4148) directly across pins 1 and 2 to clamp negative transient excursions, or use a series blocking diode in dirty industrial 24 V input circuits.",{"title":179,"severity":180,"description":181,"mitigationStrategy":182},"CTR Bin Dispersion Across Part Suffixes (A, B, C, D)","info","PC817 parts are sorted into wide CTR ranks: A (80% to 160%), B (130% to 260%), C (200% to 400%), and D (300% to 600%). Procuring unbinned or differently ranked variants can cause marginal saturation or timing variations across production batches.","Specify the exact rank suffix (such as PC817B or PC817C) in the design Bill of Materials and verify circuit calculations using the minimum specified CTR bound of that rank.",[184],{"title":185,"url":17,"type":186,"authority":187,"publisher":188,"documentNumber":189,"releaseDate":190},"Sharp PC817X Series DIP 4pin General Purpose Photocoupler Datasheet","datasheet","primary","Sharp Corporation","D2-A03101EN","2003-09-30",[192],{"title":193,"schematicSlug":194,"topology":195},"PC817 Optocoupler Galvanically Isolated Logic Interface","pc817-optocoupler-isolated-logic-interface","Unidirectional digital logic isolator providing 5000 Vrms galvanic isolation between field input and microcontroller logic, with 390 Ω input resistor, 1N4148 antiparallel clamp diode, and 4.7 kΩ pull-up to +5 V isolated rail.",[197,201,204,207,211],{"equivalentMpn":198,"manufacturer":23,"compatibilityType":199,"parameterDifferences":200},"EL817","pin_to_pin_drop_in","Direct 4-pin pin-to-pin compatible optocoupler with 5000 Vrms isolation and 80 V VCEO rating across comparable CTR bins A, B, C, D.",{"equivalentMpn":202,"manufacturer":24,"compatibilityType":199,"parameterDifferences":203},"LTV-817","Direct 4-pin pin-to-pin compatible optocoupler; check VCEO rating (35 V on standard LTV-817, 80 V on LTV-817S\u002FM series) against system operating voltage.",{"equivalentMpn":205,"manufacturer":25,"compatibilityType":199,"parameterDifferences":206},"FOD817","Direct 4-pin pin-to-pin compatible optocoupler with 5000 Vrms isolation rating and 70 V VCEO breakdown.",{"equivalentMpn":208,"manufacturer":209,"compatibilityType":199,"parameterDifferences":210},"K1010","Cosmo Electronics","Direct 4-pin pin-to-pin compatible optocoupler with 5000 Vrms isolation and 80 V VCEO breakdown.",{"equivalentMpn":212,"manufacturer":213,"compatibilityType":214,"parameterDifferences":215},"4N35","Vishay","functional_requires_bom_change","6-pin DIP package with base pin (pin 6); lower CTR (typically 100% at 10 mA) and 3550 Vrms isolation rating; requires PCB footprint layout change.",[],{"canonicalUrl":218,"metaTitle":219,"metaDescription":220,"primarySearchCluster":221,"structuredDataSchema":226},"https:\u002F\u002Fcircuitbase.tech\u002Fcomponent\u002Fpc817","PC817 Optocoupler Pinout & Isolator Specs","Sharp PC817 photocoupler pinout, 5000 Vrms isolation, 80 V VCEO breakdown, CTR ranks A-D, DIP-4 and SMD-4 package limits with verified electrical notes.",[19,222,223,224,225],"PC817 optocoupler","PC817 pinout","PC817 datasheet","photocoupler DIP-4","TechArticle",null,[229,245,255,263],{"id":230,"slug":230,"mpn":231,"primaryCategory":20,"manufacturers":232,"shortDescription":234,"packages":235,"packageTypes":239,"voltage":240,"recommendedOperating":244},"ch340g","CH340G",[233],"WCH (Jiangsu Qinheng)","USB to UART serial bridge in SOP-16 with modem signals and an external 12 MHz crystal, common on low-cost Arduino-compatible and ESP8266 boards.",[236],{"packageType":237,"pinCount":238},"SOP-16",16,[237],{"context":241,"min":242,"max":243,"typical":75},"supply",2.9,5.3,{"supplyVoltageMinV":242,"supplyVoltageTypV":75,"supplyVoltageMaxV":243},{"id":246,"slug":246,"mpn":247,"primaryCategory":248,"manufacturers":249,"shortDescription":250,"packages":251,"packageTypes":254,"voltage":-1},"2n3904","2N3904","bipolar_transistor",[25],"General-purpose small-signal NPN silicon bipolar junction transistor in a TO-92 package with E-B-C pinout, featuring 40V VCEO and 200mA IC absolute maximum ratings.",[252],{"packageType":253,"pinCount":51},"TO-92",[253],{"id":256,"slug":256,"mpn":257,"primaryCategory":248,"manufacturers":258,"shortDescription":259,"packages":260,"packageTypes":262,"voltage":-1},"2n3906","2N3906",[25],"General-purpose small-signal PNP silicon bipolar junction transistor in a TO-92 package with E-B-C pinout, featuring 40V VCEO and 200mA IC absolute maximum ratings.",[261],{"packageType":253,"pinCount":51},[253],{"id":264,"slug":264,"mpn":265,"primaryCategory":266,"manufacturers":267,"shortDescription":268,"packages":269,"packageTypes":271,"voltage":-1},"2n7000","2N7000","power_mosfet",[25],"onsemi 2N7000 N-channel MOSFET in TO-92 (CASE 135AN), S-G-D pinout; absolute VDSS limit 60 V and continuous ID limit 200 mA at TC = 25°C.",[270],{"packageType":253,"pinCount":51},[253],{},1793836426307]