{"schemaVersion":1,"slug":"pnp-darlington-transistor","name":"PNP Darlington transistor","kind":"symbol","abbreviation":"PNP-DAR","aliases":["Darlington pair PNP","high-gain PNP pair"],"category":"electronics-components","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Two PNP transistor stages connected as a compound current-amplifying device.","description":["Two PNP transistor stages connected as a compound current-amplifying device.","On a schematic, identify the common collector, input base and output emitter polarity and trace the high-side or amplification circuit. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.","A PNP Darlington has opposite operating polarity to an NPN pair; gain alone does not define an interchangeable device.","The preview is an independently drawn educational functional reference. Add the selected component’s actual power pins, terminal numbers, timing or analogue reference details when producing a construction drawing."],"readingNotes":["Identify the common collector, input base and output emitter polarity.","Trace the high-side or amplification circuit."],"drawingChecklist":["Label the common collector, input base and output emitter polarity.","Cross-reference the high-side or amplification circuit.","Add the selected device or circuit documentation revision, power/reference connections and project signal convention."],"distinction":"A PNP Darlington has opposite operating polarity to an NPN pair; gain alone does not define an interchangeable device.","facts":[{"label":"Common schematic mnemonic","value":"PNP-DAR — descriptive only; project/device documentation defines reference designations."},{"label":"Terminal / interface focus","value":"The common collector, input base and output emitter polarity"},{"label":"Artwork scope","value":"Original educational functional/circuit reference; not a selected product pinout."}],"references":[{"sourceId":"pub-electronics-darlington","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}],"related":["pnp-bipolar-transistor","diode"],"artwork":"electronics-darlington-pnp","publishedOn":"2026-10-14","updatedOn":"2026-10-14","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/pnp-darlington-transistor","illustration":{"url":"https://eloragrid.ai/library/illustrations/pnp-darlington-transistor.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-electronics-darlington","title":"TIP120/TIP125 complementary Darlington transistor documentation","publisher":"STMicroelectronics","url":"https://www.st.com/resource/en/datasheet/tip120.pdf","type":"manufacturer","scope":"Public manufacturer explanation and diagrams of NPN and PNP compound Darlington devices. Educational geometry is independently drawn; package drawings are not rehosted.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored."}]}