{"id":3654,"date":"2026-06-07T13:03:27","date_gmt":"2026-06-07T13:03:27","guid":{"rendered":"https:\/\/materialparts.com\/ltst-c191kgkt\/"},"modified":"2026-06-07T13:03:27","modified_gmt":"2026-06-07T13:03:27","slug":"ltst-c191kgkt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ltst-c191kgkt\/","title":{"rendered":"LTST-C191KGKT"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The LTST-C191KGKT from Lite-On is a green surface-mount chip LED in a 0603 (1608 metric) package. With 571nm dominant wavelength, 35mcd typical luminous intensity at 20mA, 130 degree viewing angle, and 2.0V forward voltage, it is a widely used indicator LED for consumer and industrial electronics.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Color<\/td>\nGreen<\/td>\n<\/tr>\n
\u4e3b\u5bfc\u6ce2\u957f<\/td>\n571 nm (typ)<\/td>\n<\/tr>\n
\u5cf0\u503c\u6ce2\u957f<\/td>\n574 nm<\/td>\n<\/tr>\n
Luminous Intensity<\/td>\n35 mcd (typ @ 20mA)<\/td>\n<\/tr>\n
Forward Voltage<\/td>\n2.0V (typ @ 20mA)<\/td>\n<\/tr>\n
Forward Current<\/td>\n20 mA (max 30mA)<\/td>\n<\/tr>\n
\u89c6\u89d2<\/td>\n130 deg<\/td>\n<\/tr>\n
\u529f\u7387\u8017\u6563<\/td>\n75 mW<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55 to +85 C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n0603 (1.6 x 0.8 x 0.55 mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Ultra-thin 0.55mm height profile<\/li>\n
  • 0603 industry-standard footprint<\/li>\n
  • 35mcd at 20mA bright output<\/li>\n
  • 130 degree wide viewing angle<\/li>\n
  • Water clear lens<\/li>\n
  • IC-compatible forward current<\/li>\n
  • Compatible with IR and vapor phase reflow<\/li>\n
  • \u7b26\u5408 RoHS \u89c4\u8303\uff0c\u7eff\u8272\u4ea7\u54c1<\/li>\n
  • 5,000pcs per reel<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Front panel indicators<\/li>\n
    • Backlighting<\/li>\n
    • Mobile phone status LEDs<\/li>\n
    • Consumer electronics<\/li>\n
    • Industrial equipment indicators<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LTST-C191KGKT from Lite-On is a green surface-mount chip LED in a 0603 (1608 metric) package. With 571nm dominant wavelength, 35mcd typical luminous intensity at 20mA, 130 degree viewing angle, and 2.0V forward voltage, it is a widely used indicator LED for consumer and industrial electronics. Key Specifications Color Green Dominant Wavelength 571 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[212],"class_list":["post-3654","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-liteon"],"acf":{"brief_explanation":"Green 0603 chip LED, 571nm, 35mcd, 130deg, 2.0V, water clear","date_code":"","package_case":"0603 (1.6 x 0.8 x 0.55 mm)","in_stock":109581,"datasheet":"https:\/\/optoelectronics.liteon.com\/upload\/pad\/LTST-C191KGKT.pdf","price":"$0.037 @ 1ku","product_introduction":"The LTST-C191KGKT from Lite-On is a green chip LED in an industry-standard 0603 (1608 metric) surface-mount package. The suffix C191 denotes 0603 footprint, K indicates green color (571nm dominant wavelength), G indicates green LED chip, K indicates water clear lens, and T denotes tape and reel packaging. At 20mA forward current, it delivers 35mcd typical luminous intensity with a wide 130 degree viewing angle. The 2.0V typical forward voltage is compatible with 3.3V and 5V logic through a simple series resistor. Its ultra-thin 0.55mm height makes it suitable for space-constrained designs.","working_principle":"The LTST-C191KGKT operates as a GaP\/GaAsP green LED: (1) Electroluminescence: When forward-biased above the turn-on voltage (~1.8V), electrons and holes recombine in the PN junction, releasing photons at the green wavelength (571nm dominant, 574nm peak). (2) Current-Limited Operation: The LED must be driven with a current-limiting resistor calculated as R = (VSUPPLY - VF) \/ IF. For a 3.3V supply: R = (3.3V - 2.0V) \/ 20mA = 65 Ohm. (3) Wide Viewing Angle: The water-clear lens and chip construction provide a 130 degree viewing angle for wide-area visibility. (4) Low-Power: At 20mA and 2.0V, the LED dissipates only 40mW, well within the 75mW maximum rating.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>Cathode<\/td>Ground<\/td>LED cathode (connect to GND via resistor)<\/td><\/tr>
      2<\/td>Anode<\/td>Power<\/td>LED anode (connect to V+ supply)<\/td><\/tr><\/table>","application_scenarios":"
      • Power-on status indicator with 35mcd green visible from wide 130 degree angle<\/li>
      • Consumer electronics front panel green indicator with simple resistor drive from 3.3V<\/li>
      • Mobile phone notification LED in space-constrained 0603 footprint<\/li>
      • Industrial equipment status indicator with -55C to +85C operating range<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Color<\/th>Package<\/th>Notes<\/th><\/tr>
        LTST-C191KGKT-5A<\/td>Lite-On<\/td>Green<\/td>0603<\/td>Low-current 5mA version<\/td><\/tr>
        KPT-2012SGC<\/td>Kingbright<\/td>Green<\/td>0805<\/td>Larger footprint<\/td><\/tr>
        SML-D12M1WT86<\/td>Rohm<\/td>Green<\/td>0603<\/td>Alternative vendor<\/td><\/tr>
        150060VS75000<\/td>Wurth<\/td>Green<\/td>0603<\/td>Alternative vendor<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=3654"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3654\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3654"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}