KEYONG Miniature Automotive PCB Relay KQA(T78) features a compact and lightweight design for automotive electronics and PCB control applications with limited installation space. This Miniature Automotive PCB Relay supports excellent load capacity of 35A for 10 minutes and 25A for 1 hour, delivering stable switching performance and reliable heat resistance. As a professional China relay manufacturer and supplier, KEYONG provides durable and cost-effective automotive PCB relay solutions for OEMs, distributors, and industrial applications.
●Compact PCB mounting design
●Stable switching performance
●Low coil power consumption
●High reliability and long lifespan
●Fast response capability
●Suitable for automotive and industrial applications
●Multiple contact configurations available
●Consistent quality under automated production
| Contact arrangment | A,B,C |
| Contact resistance | ≤100mΩ(1A 6VDC) |
| Contact material | Silver alloy:AgSnOlIn₂O₃、AgSnO₂、AgNi |
| Contact rating(Res.load) | 10A 125VAC,10A/20A 14VDC |
| Max switching voltage | 220VAC/16VDC |
| Max switching current | NO:35A,NC:20A |
| Max switching power | 2200VA/320W |
| Electrical endurance Frequency:360 ops/h) | 1×10⁵ops/1×10ops |
| Mechanical endurance(Frequency:18000 ops/h) | 1×10'ops |
| Insulation level | B/F | |
| Insulation resistance | 100MQ(500VDC) | |
| Dielectric strength(Leakage current 1mA) | Between coil and contacts | 1500VAC 1min |
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Between open contacts | 1000VAC 1min |
| Operate time(at nominal voltage) | ≤10ms | |
| Release time(without diode)(at nominal voltage) | ≤5ms | |
| Humidity | 5%～85%RH | |
| Ambient temperature | -40℃~+85℃/+105℃ | |
| Shock resistance | Functional | 98m/s² |
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Destructive | 980m/s² |
| Vibration resistance(Double amplitude) | 10Hz~55Hz 1.5mm | |
| Weight | Approx 6g | |
| Construction | Sealed,Flux proofed | |
| Power consumption(W) | 0.60W(L) | 0.80W(D) | ||||||||||
| Nominal voltage(VDC) | 05 | 06 | 09 | 12 | 18 | 24 | 05 | 06 | 09 | 12 | 18 | 24 |
| Coil resistance(Ω±10%) | 42 | 60 | 135 | 240 | 540 | 960 | 31.25 | 45 | 101 | 180 | 405 | 720 |
| Pick-up voltage(Max) | 75%(Nominal voltage) | |||||||||||
| Drop-out voltage(Min) | 10%(Nominal voltage) | |||||||||||
| Max allowable overdrive voltage(VDC) | 130%(Nominal voltage) | |||||||||||
1.What is a miniature automotive PCB relay used for?
A miniature automotive PCB relay is mainly used for switching and controlling electrical circuits in automotive electronic systems. It helps control higher current loads through low-current signals and is commonly applied in lighting systems, air conditioning systems, control modules, and electronic accessories.
2.Why choose a PCB relay instead of a traditional relay?
PCB relays are designed for direct mounting on printed circuit boards, helping reduce wiring complexity, improve assembly efficiency, and save installation space. Miniature PCB relays are especially suitable for compact automotive electronic devices.
3.How does KEYONG ensure relay quality?
KEYONG strictly follows the ISO9001 quality management system and uses automated assembly and testing equipment throughout production. Products are tested for electrical performance, durability, stability, and safety compliance before delivery.
4.What industries does KEYONG serve?
KEYONG relays are widely used in automotive electronics, renewable energy charging and storage, industrial automation, communication equipment, household appliances, smart technology systems, and security applications.
Compact Size for Space-Limited Applications
The miniature structure allows flexible PCB installation in automotive electronic modules and compact control systems. It is widely used in applications where installation space is limited while stable switching performance is required.
Stable Electrical Performance
Designed with reliable contact materials and optimized electromagnetic structure, the relay provides stable conductivity, low contact resistance, and consistent switching capability under continuous operation conditions.
Low Coil Power Consumption
The optimized coil design helps reduce energy consumption while maintaining fast response speed and stable operation, supporting efficient automotive electronic systems.
Long Mechanical and Electrical Service Life
Manufactured with precise automated assembly equipment and strict quality inspection processes, the relay maintains stable performance under vibration, temperature fluctuation, and frequent switching conditions.
Professional Manufacturing Support
As an experienced China automotive relay manufacturer, KEYONG provides OEM and customized relay solutions according to customer requirements, including voltage selection, contact arrangement, terminal configuration, and application matching support.
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350 Renmin North Road, Hengxi Town, Yinzhou District, Ningbo City, Zhejiang Province, China
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