{"id":7219,"date":"2026-06-23T07:35:35","date_gmt":"2026-06-23T07:35:35","guid":{"rendered":"https:\/\/materialparts.com\/hfd27-012-s\/"},"modified":"2026-06-23T07:35:35","modified_gmt":"2026-06-23T07:35:35","slug":"hfd27-012-s","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/hfd27-012-s\/","title":{"rendered":"HFD27\/012-S"},"content":{"rendered":"

Productos<\/h2>\n

The HFD27\/012-S from Hongfa is a 12VDC\/24VDC DPDT signal relay in a DIP-16 package. With 2A\/30VDC switching and 5000Vrms isolation, it provides reliable signal switching for industrial control and telecom applications.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n
Coil Voltage<\/td>\n12 VDC<\/td>\n<\/tr>\n
Contact Form<\/td>\nDPDT (2 Form C)<\/td>\n<\/tr>\n
Switching Capacity<\/td>\n2A \/ 30VDC, 0.5A \/ 125VAC<\/td>\n<\/tr>\n
Coil Resistance<\/td>\n400 Ohm (typical)<\/td>\n<\/tr>\n
Isolation<\/td>\n5000 Vrms (coil to contact)<\/td>\n<\/tr>\n
Mechanical Life<\/td>\n10,000,000 operations<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C to +70C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • DPDT (2 Form C) contact configuration for signal routing<\/li>\n
  • 12VDC coil with 400 Ohm resistance for low power consumption<\/li>\n
  • 5000Vrms dielectric strength for safety-critical isolation<\/li>\n
  • 10 million mechanical operations for long service life<\/li>\n
  • DIP-16 through-hole package for easy PCB assembly<\/li>\n
  • Sealed relay body for automatic washing compatibility<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Industrial PLC signal switching and routing<\/li>\n
    • Telecom line switching and test equipment<\/li>\n
    • Security system sensor and alarm circuits<\/li>\n
    • Medical equipment signal isolation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The HFD27\/012-S from Hongfa is a 12VDC\/24VDC DPDT signal relay in a DIP-16 package. With 2A\/30VDC switching and 5000Vrms isolation, it provides reliable signal switching for industrial control and telecom applications. Key Specifications Coil Voltage 12 VDC Contact Form DPDT (2 Form C) Switching Capacity 2A \/ 30VDC, 0.5A \/ 125VAC Coil Resistance […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[57,13],"tags":[],"chip_brand":[308],"class_list":["post-7219","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","chip_brand-hongfa"],"acf":{"brief_explanation":"12VDC DPDT signal relay, 2A\/30V, 5000Vrms isolation, DIP-16, sealed, 10M cycles","date_code":"","package_case":"DIP-16 (20.3 x 10.2 x 15.2 mm)","in_stock":2374,"datasheet":"https:\/\/www.hongfa.com\/product\/detail\/HFD27.html","price":"$0.80 @ 1ku","product_introduction":"The HFD27\/012-S from Hongfa is a 12VDC ultra-sensitive DPDT (2 Form C) signal relay in a DIP-16 through-hole package. The relay features two independent changeover contact sets, each rated for 2A at 30VDC or 0.5A at 125VAC, suitable for low-level signal switching. The 12VDC coil has a resistance of approximately 400 Ohm, drawing only 30mA at nominal voltage for low power consumption. The 5000Vrms dielectric strength between coil and contacts provides excellent isolation for safety-critical applications including medical and telecom equipment. The sealed relay construction (plastic-sealed type) enables compatibility with automatic PCB washing processes. The relay achieves 10 million mechanical operations minimum, ensuring long service life in frequently switched applications. The DIP-16 footprint with 2.54mm pin pitch allows direct insertion into standard PCB sockets or soldering. The HFD27 series is widely used in industrial automation, security systems, and telecommunications where reliable signal switching with high isolation is required.","working_principle":"The HFD27\/012-S uses an electromagnetic coil to mechanically switch contacts. (1) Coil Energization: When 12VDC is applied across the coil (pins 1-16), current flows through the coil winding, generating a magnetic field in the iron core. The magnetic field attracts the armature, which is held in place by the residual magnetic force while energized. (2) Contact Transfer: The armature movement is mechanically linked to the contact springs. When the coil is energized, the common (COM) contacts disconnect from the normally closed (NC) contacts and connect to the normally open (NO) contacts. When the coil is de-energized, the return spring moves the armature back, and the contacts revert to their normal state. (3) Arc Suppression: The low switching current (2A max) and voltage (30VDC) minimize contact arcing. For inductive loads, external suppression circuits (RC snubbers or diodes) may be needed to extend contact life. (4) Isolation: The physical separation between the coil and contacts, combined with the insulating bobbin and housing, provides the 5000Vrms dielectric strength. This ensures that no hazardous voltage can reach the control circuit from the load circuit.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Coil+<\/td>Input<\/td>Coil positive terminal<\/td><\/tr>
      16<\/td>Coil-<\/td>Input<\/td>Coil negative terminal<\/td><\/tr>
      4,13<\/td>COM1, COM2<\/td>Common<\/td>Common contacts<\/td><\/tr>
      6,11<\/td>NO1, NO2<\/td>Normally Open<\/td>Normally open contacts<\/td><\/tr>
      8,9<\/td>NC1, NC2<\/td>Normally Closed<\/td>Normally closed contacts<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial PLC signal switching and routing with DPDT contacts<\/li>
      • Telecom line switching and test equipment with 5000Vrms isolation<\/li>
      • Security system sensor and alarm circuits with 10M cycle life<\/li>
      • Medical equipment signal isolation in DIP-16 sealed package<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Omron<\/td>G6K-2F-Y-12VDC<\/td>DIP-16<\/td>DPDT, 12V, similar<\/td><\/tr>
        TE Connectivity<\/td>VRT24112S<\/td>DIP-16<\/td>DPDT, 12V, telecom relay<\/td><\/tr>
        Panasonic<\/td>TX2SA-12V<\/td>DIP-16<\/td>DPDT, 12V, signal relay<\/td><\/tr>
        Hongfa<\/td>HFD27\/005-S<\/td>DIP-16<\/td>5VDC coil version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7219","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=7219"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7219\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=7219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=7219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=7219"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}