The 1.35mm DC Power Jack SMT is a surface-mount device (SMT) connector designed for providing DC power to compact electronic products. Its key feature is a 1.35mm center pin diameter, making it suitable for low-profile applications like IoT modules, portable media players, and miniature gadgets. The SMT design allows for automated PCB assembly, streamlining manufacturing. This jack typically features a robust housing for reliable mating/unmating cycles. Its small footprint saves valuable board space, which is critical in modern, space-constrained electronic designs.
The 1.35mm DC Power Jack SMT (Surface Mount Technology) is a type of connector used to connect a DC power source to an electronic device. Its center pin carries the positive voltage, while the outer sleeve serves as the negative voltage or ground connection. Its precise design ensures stable and efficient power transmission. Below is some information about it:
Rated Voltage and Current: Different models of 1.35mm DC Power Jack SMT have varying rated voltages and currents. For example, a 3.5*1.35 DC-047 SMT patch DC jack from Xinpu has a rated voltage of 12V and a rated current of 3A. In contrast, the PJ-014DH-SMT model from CUI Inc. has a rated voltage of 24VDC and a rated current of 5A.
Insertion and Extraction Lifespan: Some products can achieve an insertion and extraction lifespan of up to 10,000 cycles, such as the DC-047 SMT patch DC jack. There are also products with an insertion and extraction lifespan of 5,000 cycles, like an SMT horizontal DC power jack from RHTconn.
Space-Saving: Adopting Surface Mount Technology (SMT), compared with traditional through-hole sockets, it is more suitable for high-density PCB layouts, effectively saving circuit board space. It is particularly applicable to small electronic products, development boards, smart devices, etc.
Secure Soldering: It is directly attached to the board for soldering, resulting in firm solder joints and strong shock resistance, which can reduce connection loosening issues caused by device movement or vibration.
Eco-Friendly: Some products comply with environmental standards and do not contain harmful substances such as lead and cadmium.
| Rating | 1.0A, 30V DC |
| Contact Resistance | 30mΩ Max(initial) |
| Insulation Resistance | 100mΩ Min(250VDC) |
| Dielectric Strength | AC 500V(50Hz for 1minute) |
| Actuating Force | 3-20N |
| Environment Temperature | -30℃~70℃ |
| Electrical Life | 5,000 Cycles |
KKG DC Power Jack, each part of the use of temperature-resistant materials, high-temperature testing equipment 260 ℃ for 5 minutes, the appearance of the product does not change!
1. Portable Consumer Electronics
The 1.35mm DC power jack is widely used in compact devices like Bluetooth headsets, mini speakers, and digital audio players. Its small SMT footprint is ideal for space-constrained designs where a low-profile charging or power input solution is required.
2. Wearable Technology
Fitness trackers, smartwatches, and health monitoring devices utilize this jack for intermittent data syncing and charging. The surface-mount design ensures reliability against physical stress from daily wear, while the small size maintains sleek product aesthetics.
3. IoT Modules & Sensors
For industrial and commercial IoT sensor nodes, gateways, and communication modules, the 1.35mm jack provides a reliable DC power input. The SMT construction allows for automated PCB assembly, reducing manufacturing costs for high-volume deployments.
4. Miniature Medical Devices
Hearing aids, portable diagnostic equipment, and wearable medical monitors benefit from the jack's compactness and secure connection. Its precision design ensures consistent power delivery for sensitive electronic components in critical applications.
5. Telecommunications Equipment
In routers, modems, and VoIP phones, this power jack offers a standardized interface for external power adapters. The surface-mount technology provides strong board attachment, enhancing durability in both home and office environments.
Q: What is a 1.35mm DC Power Jack SMT?
A: It is a Surface-Mount Technology (SMT) connector for providing DC power. Its 1.35mm center pin diameter makes it suitable for compact electronics.
Q: Key benefits of the SMT design?
A: The SMT design allows for high-speed automated assembly, reducing production costs. It also saves significant PCB space compared to through-hole versions.
Q: Typical applications for this jack?
A: Due to its small size, it's ideal for space-constrained devices like Bluetooth headphones, mini drones, portable medical equipment, and IoT sensors.
Q: Important specifications to check?
A: Always verify the voltage/current rating, operating temperature, and the mating plug's dimensions to ensure compatibility with your power supply.
Q: Any critical PCB layout tips?
A: Yes. Provide a strong ground connection and robust solder pads. A central anchor pad under the body improves mechanical stability during insertion.
Q: Reliability concerns with SMT jacks?
A: The main concern is physical stress from plug insertion. Ensure the PCB layout provides strong support to prevent the jack from detaching from the board.
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