HFE25-1-48HST
Latching relay with bistable operation for smart meters. Zero standby power consumption and long mechanical life.
Product Overview
Description
The HFE25-1-48HST is a latching relay featuring bistable operation that maintains contact state without continuous coil power. This makes it ideal for power-sensitive applications such as smart meters and battery-powered devices.
The relay uses a permanent magnet to maintain the contact position after the coil pulse, resulting in zero standby power consumption. Available in single-coil and dual-coil configurations.
Designed for long mechanical life with precious metal contacts for reliable low-level switching. The compact size is ideal for space-constrained applications in energy management systems.
Product Series
HFE
Primary Application
Telecom systems
Key Features
- 48V coil
- 20A capacity
Specifications
| Contact Rating | 20A 250VAC |
|---|---|
| Coil Voltage | 48VDC |
| Contact Configuration | 1 Form C (SPDT) |
Applications
Telecom systems
Electronic system design
Power distribution
Electronic system design
FAE Expert Insights
"The HFE25-1-48HST latching relay is an excellent choice for smart meter and energy management applications where power consumption is critical. The bistable operation maintains contact state without continuous coil power, resulting in zero standby consumption. I've recommended this series to multiple smart meter manufacturers who have significant power savings. The single-coil version is simpler to drive, while the dual-coil version offers more flexible control options. For meter applications, the relay's compact size allows for high-density PCB layouts. The precious metal contacts ensure reliable switching of low-level signals over the product lifetime."
Latching relay with zero standby power consumption for smart meters and battery-powered applications
— Michael Zhang, BeiLuo
Frequently Asked Questions
What is the contact configuration and latching mechanism of HFE25-1-48HST?
The HFE25-1-48HST is a latching relay designed for power-saving applications. It features a magnetic latching mechanism that maintains contact position without continuous coil power. The contact configuration supports various switching requirements. The relay consumes power only during state transitions, making it ideal for battery-powered applications. For detailed specifications including coil pulse requirements, contact ratings, and reset methods, please refer to the datasheet. These parameters make the HFE25-1-48HST suitable for smart meters, energy management, and remote control applications.
Choose HFE25-1-48HST for applications requiring zero standby power; select appropriate contact configuration for your switching needs.
How do I select and apply HFE25-1-48HST in my circuit design?
When using HFE25-1-48HST in your circuit design, consider several important factors for optimal performance. First, ensure the contact rating provides adequate margin for your load - typically 20% derating is recommended for resistive loads, with higher margins for inductive or capacitive loads. The coil voltage must match your control circuit voltage with consideration for voltage fluctuations. For PCB mounting, follow the recommended footprint and keep high current traces short and wide. Temperature derating may be necessary for applications operating above 40°C ambient. For inductive loads, consider using arc suppression components to extend relay life. Proper coil driving with appropriate current ensures reliable operation.
Apply 20% contact derating; match coil voltage to control circuit; use arc suppression for inductive loads; follow recommended PCB footprint.
How does HFE25-1-48HST compare to relays from Omron, Panasonic, and TE?
The HFE25-1-48HST offers competitive performance compared to major relay manufacturers like Omron, Panasonic, and TE Connectivity. In terms of electrical characteristics, Hongfa relays provide comparable contact ratings, coil specifications, and mechanical life to these established brands. The contact materials and construction ensure reliable switching performance. Hongfa's manufacturing quality meets international standards with competitive field failure rates. Pricing is typically more attractive than Japanese and American competitors, offering cost savings for high-volume applications. Lead times are generally shorter with good inventory availability. Hongfa also offers equivalent safety certifications including UL, VDE, and TÜV. For most general-purpose applications, Hongfa relays provide equivalent performance at better value.
Choose Hongfa for cost-effective, reliable relays; consider premium brands only for the most demanding specialized applications.
What are the typical applications for HFE25-1-48HST?
The HFE25-1-48HST is designed for power-saving switching applications. Smart meters use these relays for load switching with minimal power consumption. Energy management systems employ them for automatic load control. Remote control systems use latching relays for state maintenance without continuous power. Battery-powered devices benefit from the zero standby power consumption. The relay's bistable operation makes it ideal for applications requiring position memory.
Select HFE25-1-48HST for smart meters, energy management, and battery-powered applications requiring power saving.
What is the lead time, MOQ, and pricing for HFE25-1-48HST?
The HFE25-1-48HST has a standard lead time of 4-8 weeks for production quantities, depending on current demand and factory capacity. BeiLuo Electronics maintains strategic inventory for popular relay models, enabling faster delivery for sample and small quantity orders. The minimum order quantity (MOQ) is typically 500 pieces for standard relays, with volume pricing tiers available at 1K, 5K, and 10K+ quantities. Sample quantities (10-50 pieces) are available for prototype development with shorter lead times of 1-2 weeks. Pricing varies based on order volume, with competitive rates for high-volume production. For custom specifications or special requirements, contact our sales team for quotation and lead time estimates. Long-term supply agreements are available for high-volume customers, ensuring stable pricing and guaranteed capacity.
Plan procurement with 4-8 week lead time; contact sales for volume pricing and long-term supply agreements; samples available for prototyping.
What quality certifications does HFE25-1-48HST have?
The HFE25-1-48HST is manufactured under Hongfa's comprehensive quality management system certified to ISO 9001 and IATF 16949 for automotive applications. The relay meets UL/C-UL safety standards for North American markets, VDE for German and European markets, TÜV for European safety standards, and CQC for Chinese domestic market. The manufacturing process includes 100% electrical testing for coil characteristics, contact resistance, and dielectric strength. Reliability testing includes life testing, environmental testing, and mechanical endurance testing. Hongfa maintains full lot traceability for quality management and recall prevention.
Specify required certifications for your region; contact sales for certification documentation and automotive qualification data.