Analysis of the Differences between the 1206F and 1206T Series of Huade Electronic Surface Fuses
Walter Electronics' 1206F and 1206T series are both patch fuses with dimensions of 3.2mm × 1.6mm, suitable for surface mount technology (SMT), but there are significant differences in technical parameters, performance characteristics, and application scenarios. Compare the differences between the two from the core dimension as follows:
1、 Fuse characteristics and design positioning
Melting speed
1206F series: featuring fast acting, which can quickly cut off the circuit when overload current occurs, with short response time, suitable for scenarios that require quick protection (such as precision electronic equipment).
1206T series: Adopting a slow break (TimeLag) design, it can withstand brief current surges (such as surge currents), making it more suitable for environments that require resistance to instantaneous overload (such as motor starting or power modules).
Key difference: The 1206T ceramic slow break technology makes it more stable under high temperature or high current fluctuations.
Rated current and voltage
Current range:
1206F covers 0.5A~10A (such as 0.5A, 1A, 10A, etc.), while 1206T covers 1A~10A with a higher starting current.
Voltage level:
Some models of 1206F support higher voltages (such as 125V), while 1206T generally has a voltage of 63V.
2、 Performance parameters and environmental adaptability
Working temperature range
The 1206T series supports a wider temperature range (55 ℃~150 ℃), while the 1206F series generally ranges from 55 ℃~125 ℃ (some models can reach up to 150 ℃).
This difference makes the 1206T more suitable for high-temperature environments such as automotive electronics or industrial equipment.
Breaking ability and materials
Both have the ability to separate 50A@63V DC， But the 1206T ceramic substrate and copper alloy fuse design enhance the high temperature resistance.
1206F adopts fast melting materials (such as copper alloy/tin) to ensure fast response; 1206T uses slow break technology to extend the melting time and avoid accidental triggering.
3、 Application scenarios and selection suggestions
Applicable fields
1206F series:
Mainly used for precision electronic devices such as mobile phones, servers, communication modules, household appliances, etc., in scenarios where fault currents need to be quickly cut off.
1206T series:
Suitable for high-power devices or environments with surge currents, such as automotive electronics, transformers, motor controls, industrial power supplies, etc.
Key selection points
If the circuit is sensitive to instantaneous current (such as medical equipment), priority should be given to the 1206F fast break characteristic.
If working under high temperature or frequent current fluctuations (such as in car systems), it is recommended to use a 1206T slow break design.
Refer to the specific model's I ² t value (such as 0.138A ² s for 1206F 1A and 0.259A ² s for 1206T 1A) to match the circuit's surge withstand capability.
Summary
|Comparison Dimension | 1206F Series | 1206T Series|
|Fuse characteristics | Fast break type, fast response | Slow break type, strong surge resistance|
|Rated current range | 0.5A~10A | 1A~10A|
|Typical application scenarios | Precision electronics, communication equipment | Automotive electronics, industrial power supply|
|Working temperature upper limit | 125 ℃ (some models 150 ℃) | 150 ℃|
|Voltage upper limit | Maximum 125V (some models) | 63V|
Through the above comparison, users can choose the appropriate series based on their circuit protection requirements, such as response speed, ambient temperature, current fluctuations, etc. Huade Electronics covers the full range of circuit protection requirements from consumer electronics to industrial control through differentiated product design.