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HFD42/12-3SR

4th-gen signal relay, 12VDC coil, DPDT, 2A/220VDC, 2.5kV surge, SMD 5.7mm wide, -40~85°C

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Manufacturer Part：

HFD42/12-3SR

Package：

SMD Gull Wing (10.6 x 5.7 x 9mm)

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Description

Product Overview

The HFD42/12-3SR is an ultra-compact 4th generation signal relay manufactured by Xiamen Hongfa (Hongfa). It features a 12V DC coil with DPDT (2 Form C) contacts rated at 2A/220VDC. The relay offers 2.5kV surge voltage between coil and contacts, IEC 62368-1 compliance, and an ultra-narrow 5.7mm width suitable for dense PCB layouts.

Key Specifications

  • Coil Voltage: 12V DC
  • Coil Type: Monostable
  • Coil Power: 0.23W
  • Coil Resistance: 1.028kΩ
  • Contact Form: DPDT (2 Form C)
  • Contact Material: AgNi + gold plated
  • Max Switching Current: 1A (AC), 2A (DC)
  • Max Switching Voltage: 250VAC, 220VDC
  • Max Switching Power: 60W / 62.5VA
  • Operate Time: ≤3ms
  • Release Time: ≤3ms
  • Surge Voltage (coil-contact): 2.5kV
  • Electrical Endurance: 100,000 operations
  • Mechanical Endurance: 100,000,000 operations
  • Package: SMD Gull Wing
  • Dimensions: 10.6 x 5.7 x 9mm (THT), 10 x 7.5 x 5.65mm (SMD)
  • Operating Temperature: -40°C ~ +85°C

Features

  • Ultra-narrow 5.7mm width for high-density mounting
  • 2.5kV surge voltage between coil and contacts
  • IEC 62368-1 compliant
  • DPDT dual contact with AgNi+Au plating
  • Sealed SMD and THT package options
  • Low coil power consumption (0.23W)

Applications

  • Program-controlled switches and telecom
  • Industrial automation and control
  • Office automation equipment
  • Security and surveillance systems
  • Temperature control and ATE

The HFD42/12-3SR is Hongfa’s 4th generation ultra-narrow signal relay with 12VDC coil, DPDT contacts, and 2.5kV surge voltage rating for industrial and telecom applications.

Applying 12V DC to the coil generates a magnetic field that moves the armature, switching the DPDT contacts from their normally closed to normally open position. When coil voltage is removed, a return spring restores the contacts to their original state. The sealed construction provides environmental protection.

Pin Function
1, 8 Coil terminals (+, -)
2, 7 Common (COM) contacts
3, 6 Normally Open (NO) contacts
4, 5 Normally Closed (NC) contacts
  • Signal switching in telecom and datacom equipment
  • Industrial PLC output modules
  • Automatic test equipment (ATE)
  • Audio and video signal routing
Model Manufacturer Coil Width
HFD4/12-SR Hongfa 12VDC 7.5mm
G6K-2F-Y 12VDC Omron 12VDC 5.2mm
RM85-2011-05-12 TE 12VDC 7.1mm
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
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For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

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If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

Contact Us

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

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5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

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We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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