Walter 1206 Resistance STE Series Model Parameters Detailed Explanation and Application Guide
Walter Electronics, as a well-known electronic component manufacturer with over 49 years of history, plays an important role in current sampling applications with its STE series 1206 alloy resistors. This article will provide a detailed analysis of the model parameters, technical characteristics, and application advantages of the Walter1206 resistor STE series.
Walter STE series 1206 resistor model analysis
The WalterSTE series resistors adopt standardized naming conventions, and each model includes complete technical parameter information. Taking the typical model "STE1206M1W0R040F" as an example:
STE: Series code, representing metal ceramic current sensing resistor
1206: Package size, representing a standard 1206 package of 3.2mm × 1.6mm
M: Resistance material (M represents manganese copper alloy/MnCu alloy, A represents alloy/Al loy, C represents nickel copper/NiCu)
1W0: rated power, indicating the power tolerance of 1W
R040: Resistance code, representing 0.040 Ω (40m Ω)
F: Accuracy level, F represents ± 1% resistance deviation (D represents ± 0.5%)
Walter1206 resistor STE series key technical parameters
1. Resistance range and accuracy
The Walter1206 resistor STE series offers a wide range of resistance values, from a minimum of 2m Ω (R002) to a maximum of 700m Ω (R700). The resistance accuracy is divided into two levels: ± 0.5% (D level) and ± 1% (F level), which meet the accuracy requirements of different application scenarios.
2. Power characteristics and temperature coefficient
This series of resistors adopts the 1206 standard package, but provides a rated power of up to 1W, thanks to its optimized thermal design and material selection. The temperature coefficient (TCR) is ± 50ppm/℃, demonstrating excellent thermal stability and ensuring minimal resistance fluctuations in temperature changing environments.
3. Material and structural design
The Walter1206 resistor STE series adopts a multi-layer structure design:
Substrate: Alumina Ceramic substrate, providing excellent insulation and thermal conductivity
Resistors: Manganese copper alloy (MnCu) or nickel copper alloy (NiCu), with low temperature coefficient and good long-term stability
Terminal electrode: Adopting a three-layer structure of copper/nickel/tin to ensure excellent solderability and corrosion resistance
Protective layer: fire-resistant epoxy resin coating, in compliance with UL94 fire protection standards
Walter1206 resistor STE series complete parameter table
The following table summarizes the key technical parameters of the Walter1206 resistor STE series:
|Parameter category | Specific parameters | Technical indicators|
|Package size | Length × Width | 3.30mm ± 0.20mm × 1.70mm ± 0.20mm|
|Thickness | 0.65mm ± 0.20mm|
|Electrical characteristics | Resistance range | 2m Ω 700m Ω|
|Accuracy level | ± 0.5% (D), ± 1% (F)|
|Rated power | 1W (70 ℃)|
|Temperature coefficient | ± 50ppm/℃|
|Material composition | Resistance material | MnCu/NiCu|
|Substrate Material | Alumina Ceramic|
|Terminal electrode | Cu/Ni/Sn three-layer electroplating|
|Environmental characteristics | Operating temperature | 55 ℃~170 ℃|
|Welding heat resistance | 260 ± 5 ℃, max.10sec|
Application Fields and Selection Suggestions
The Walter1206 resistor STE series is particularly suitable for scenarios that require high-precision current sampling, such as:
1. Power management system: Current detection in switch mode power supplies and DCDC converters
2. New energy vehicle electronics: Battery Management System (BMS), Motor Drive Control
3. Industrial automation: current monitoring in frequency converters and servo drives
4. Consumer electronics: Overcurrent protection for smart devices and charging devices
When selecting, the following factors should be considered:
Current size: Determine the resistance power and resistance value based on the maximum current, ensuring that it does not exceed the rated power
Accuracy requirement: Normal applications can choose ± 1% accuracy, high-precision systems should choose ± 0.5% level
Temperature environment: Low rated use should be considered in high temperature environments to ensure long-term reliability
The model parameters of Walter alloy surface mount resistor STE1206 series are as follows:
STE1206M1W0R003F 1206 0.003R/3mΩ 1W ±1%
STE1206M1W0R004F 1206 0.004R4mΩ 1W ±1%
STE1206M1W0R005F 1206 0.005R/5mΩ 1W ±1%
STE1206M1W0R006F 1206 0.006R/6mΩ 1W ±1%
STE1206M1W0R007F 1206 0.007R/7mΩ 1W ±1%
STE1206M1W0R008F 1206 0.008R/8mΩ 1W ±1%
STE1206M1W0R009F 1206 0.009R/9mΩ 1W ±1%
STE1206M1W0R010F 1206 0.01R/10mΩ 1W ±1%
STE1206M1W0R011F 1206 0.011R/1mΩ 1W ±1%
STE1206M1W0R012F 1206 0.012R/12mΩ 1W ±1%
STE1206M1W0R013F 1206 0.013R/13mΩ 1W ±1%
STE1206M1W0R014F 1206 0.014R/14mΩ 1W ±1%
STE1206M1W0R015F 1206 0.015R/15mΩ 1W ±1%
STE1206M1W0R017F 1206 0.017R/17mΩ 1W ±1%
STE1206M1W0R018F 1206 0.018R/18mΩ 1W ±1%
STE1206M1W0R020F 1206 0.02R/20mΩ 1W ±1%
STE1206M1W0R022F 1206 0.022R/22mΩ 1W ±1%
STE1206M1W0R023F 1206 0.023R/23mΩ 1W ±1%
STE1206M1W0R024F 1206 0.024R/24mΩ 1W ±1%
STE1206M1W0R025F 1206 0.025R/25mΩ 1W ±1%
STE1206M1W0R027F 1206 0.027R/27mΩ 1W ±1%
STE1206M1W0R028F 1206 0.028R/28mΩ 1W ±1%
STE1206M1W0R030F 1206 0.03R/30mΩ 1W ±1%
STE1206M1W0R033F 1206 0.033R/33mΩ 1W ±1%
STE1206M1W0R035F 1206 0.035R/35mΩ 1W ±1%
STE1206M1W0R036F 1206 0.036R/36mΩ 1W ±1%
STE1206M1W0R039F 1206 0.039R/39mΩ 1W ±1%
STE1206M1W0R040F 1206 0.04R/40mΩ 1W ±1%
STE1206M1W0R042F 1206 0.042R/42mΩ 1W ±1%
STE1206M1W0R045F 1206 0.045R/45mΩ 1W ±1%
STE1206M1W0R047F 1206 0.047R/47mΩ 1W ±1%
STE1206M1W0R049F 1206 0.049R/49mΩ 1W ±1%
STE1206M1W0R050F 1206 0.05R/50mΩ 1W ±1%
STE1206M1W0R052F 1206 0.052R/52mΩ 1W ±1%
STE1206M1W0R056F 1206 0.056R/56mΩ 1W ±1%
STE1206M1W0R060F 1206 0.06R/60mΩ 1W ±1%
STE1206M1W0R062F 1206 0.062R/62mΩ 1W ±1%
STE1206M1W0R065F 1206 0.065R/65mΩ 1W ±1%
STE1206M1W0R068F 1206 0.068R/68mΩ 1W ±1%
STE1206M1W0R070F 1206 0.07R/70mΩ 1W ±1%
STE1206M1W0R075F 1206 0.075R/75mΩ 1W ±1%
STE1206M1W0R080F 1206 0.08R/80mΩ 1W ±1%
STE1206M1W0R082F 1206 0.082R/82mΩ 1W ±1%
STE1206M1W0R090F 1206 0.09R/90mΩ 1W ±1%
STE1206M1W0R100F 1206 0.1R/100mΩ 1W ±1%
STE1206M1W0R120F 1206 0.12R/120mΩ 1W ±1%
STE1206M1W0R130F 1206 0.13R/130mΩ 1W ±1%
STE1206M1W0R140F 1206 0.14R/140mΩ 1W ±1%
STE1206M1W0R150F 1206 0.15R/150mΩ 1W ±1%
STE1206M1W0R170F 1206 0.1R/170mΩ 1W ±1%
STE1206M1W0R180F 1206 0.18R/180mΩ 1W ±1%
STE1206M1W0R200F 1206 0.2R/200mΩ 1W ±1%
STE1206M1W0R220F 1206 0.22R/220mΩ 1W ±1%
STE1206M1W0R230F 1206 0.23R/230mΩ 1W ±1%
STE1206M1W0R240F 1206 0.24R/240mΩ 1W ±1%
STE1206M1W0R250F 1206 0.25R/250mΩ 1W ±1%
STE1206M1W0R270F 1206 0.27R/270mΩ 1W ±1%
STE1206M1W0R280F 1206 0.28R/280mΩ 1W ±1%
STE1206M1W0R300F 1206 0.3R/300mΩ 1W ±1%
STE1206M1W0R330F 1206 0.33R/330mΩ 1W ±1%
STE1206M1W0R350F 1206 0.35R/350mΩ 1W ±1%
STE1206M1W0R360F 1206 0.36R/360mΩ 1W ±1%
STE1206M1W0R390F 1206 0.39R/390mΩ 1W ±1%
STE1206M1W0R400F 1206 0.4R/400mΩ 1W ±1%
STE1206M1W0R420F 1206 0.42R/420mΩ 1W ±1%
STE1206M1W0R450F 1206 0.45R/450mΩ 1W ±1%
STE1206M1W0R470F 1206 0.47R/470mΩ 1W ±1%
STE1206M1W0R499F 1206 0.499R/499mΩ 1W ±1%
STE1206M1W0R500F 1206 0.5R/500mΩ 1W ±1%
STE1206M1W0R600F 1206 0.6R/600mΩ 1W ±1%
STE1206M1W0R640F 1206 0.64R/640mΩ 1W ±1%
STE1206M1W0R700F 1206 0.7R/700mΩ 1W ±1%
The Walter1206 resistor STE series is an ideal choice for current sampling applications due to its excellent electrical performance, stable temperature characteristics, and robust structural design. By understanding its model naming rules, technical parameters, and application characteristics, engineers can more accurately select suitable models to improve the performance and reliability of circuit systems. Walter Electronics' years of production experience ensure product consistency and stability, enabling it to maintain a technological advantage in fierce market competition.
