{"type":"product","schema_version":"1.0","item_id":"101375137097","canonical_url":"https://tw.bid.yahoo.com/item/101375137097","title":"EHE】ST原裝7812 12V穩壓IC。含稅開發票，適合車用12V LED模組之限壓、電源穩壓等用途","subtitle":null,"condition":"全新品","currency":"TWD","observed_at":"2026-04-23T18:07:20.097Z","current_price":5,"original_price":null,"stock_status":"in_stock","available_quantity":79,"sold_quantity":1,"seller":{"id":"Y3089739191","name":"EHE專業LED電子零件銷售","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/b8866625-52fc-4348-8165-67103177370b.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/fb7ebb0b-05ad-4ce7-ab99-018eac1efc2a.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/382d11be-7664-4c43-a64c-a5aac8b1b06b.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/6bbd83ae-d00b-4d2f-bd4d-510f71c8e5ed.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null}],"description":"ST全新原裝 【7812 12V穩壓IC】 \n\n ※不含圖中展示之散熱片\n\n \n\n==================================\n\n■ ST(意法半導體)全新原裝L7812CV，可互換一般7812、LM7812等穩壓IC\n\n■ 使用簡便，即可達到穩壓或限壓之效果，防止LED燈組因電壓過高產生過熱\n\n■ 內含限流、短路、過熱等保護功能，IC過熱時自動減少電流，防止IC燒毀\n\n■ 適合車用12V LED模組之限壓、電原穩壓、產品維修等用途\n\n※不加散熱片時，建議輸入14V以下且電流300mA以內。超過此條件時，請加裝適合之散熱片\n\n==================================\n\n⟁輸入電壓須比輸出高約1.5V以上才有穩壓效果，若輸入電壓較低，輸出電壓會略低於12V。\n\n⟁若用於車用時，一般熄火時電瓶電壓約為12.8V，此時輸出約為11.5V，一般LED燈組仍可正常動作。\n\n⟁當引擎運轉時，發電機輸出約為13V~14.5V，此時輸出電壓被限制在12V，達到恆定亮度之效果。\n\n==================================\n\n詳細規格  ( 電壓電流為無散熱片時之建議上限值 )\n\n►輸入電壓： 12.8 ~ 14.5 V\n\n►輸出電壓： 12V+/- 0.5V\n\n►輸出電流： 300 mA\n\n►封裝： TO-220\n\n►寬度：10 mm\n\n►螺絲孔直徑：3.6 mm\n\n※若根據原廠數據，安裝無限大散熱片時，輸入電壓最高為 35 V，輸出電流最大為 1 . 5 A\n\n==================================\n\n※頁面標示價格已含稅，可兌獎二聯式發票會隨貨一併附上，如需開立統編/抬頭請主動留言告知","shipping_methods":[{"name":"郵局掛號","fee":0,"currency":"TWD"},{"name":"7-ELEVEN取貨不付款","fee":0,"currency":"TWD"},{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"},{"name":"萊爾富取貨付款","fee":0,"currency":"TWD"},{"name":"宅配/貨運","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","信用卡一次付清","萊爾富取貨付款","7-ELEVEN取貨付款"],"category_id":"2092080282","category_name":"電料","breadcrumb":[{"id":"24198","name":"居家、家具與園藝","url":"/tw/%E5%B1%85%E5%AE%B6%E3%80%81%E5%AE%B6%E5%85%B7%E8%88%87%E5%9C%92%E8%97%9D-24198-category.html"},{"id":"24642","name":"五金/照明工具","url":"/tw/%E4%BA%94%E9%87%91-%E7%85%A7%E6%98%8E%E5%B7%A5%E5%85%B7-24642-category.html"},{"id":"2092080282","name":"電料","url":"/tw/%E9%9B%BB%E6%96%99-2092080282-category.html"}],"view_count":1,"watch_count":1,"hashtags":["ST","穩壓IC","12V","限壓IC","電源穩壓"]}