Should we choose Tian'er or Fenghua High tech for the 5% 500V resistor of 0603 10M

Should we choose the Tianyi HR1206J10M0P05Z or the Fenghua High Tech RVS06K106JT for the 1206 10M 5% 500V high-voltage resistor? Which model would be better?

When selecting high-voltage resistors, devices with the same parameters but different brands need to be evaluated comprehensively based on specific application scenarios, supply chain stability, and reliability requirements. The following is a comparative analysis and selection recommendation of two resistors:
 
1. Consistency of core parameters
The key parameters of the two resistors are completely identical and meet the basic requirements for high-voltage applications:
Package size: 1206 (length 3.20 ± 0.20mm, width 1.60 ± 0.15mm, thickness 0.55 ± 0.10mm)
Rated power: 1/4W (at 70 ℃ environment)
Resistance and accuracy: 10M Ω± 5%
Temperature coefficient: ± 100ppm/℃
Maximum operating voltage: 500V (HR1206J)/3000V (Fenghua High tech thick film high-voltage series, but RVS06K106JT is not separately labeled and needs to be confirmed)
 
Overload voltage: HR1206J nominal 1000V, not clearly indicated by Fenghua.   
 
 
Conclusion: Electrical parameters are highly overlapping and have strong interchangeability.
 
2. Differences between manufacturers and product lines
|Features | HR1206J10M0P05Z (Ever Ohms) | RVS06K106JT (Fenghua High Tech)|
|Brand Background | Taiwanese Manufacturer, Focusing on High Voltage Resistors | Mainland China's Leading Passive Component Manufacturer, with Comprehensive National Standard Certification|
 
|Application Cases | Power Supply, Automotive Electronics, Medical Equipment | Industrial General Field, Compliant with RoHS/Halogen Free Requirements|
 
|High voltage verification | Clearly label 500V working voltage/1000V overload | 500V
|Packaging supply | Supports multiple packaging options (paper tape/reel) | Standard packaging of 5000 pieces/reel|
 
Attention: Fenghua High Tech's "Thick Film High Voltage Resistors" series has a nominal maximum operating voltage of 3000V, but RVS06K106JT, as the 1206 model in this series, the actual operating voltage should be based on the specifications (which may be lower than 3000V). If the design requires a voltage close to the limit of 500V, HR1206J (clearly labeled as 500V) should be given priority.
 
3. Adaptability to application scenarios
High reliability scenarios (medical/military):
 
Priority should be given to HR1206J, as it is clearly marked as passing the 1000V overload test and designed to be compatible with lead-free soldering.   
Cost sensitive industrial equipment:
Fenghua High tech has more supply chain advantages (high localization rate, possibly lower prices), and meets the requirements of halogen-free environmental protection.   
Space limited design:
The two have the same size, but the thickness tolerance of Fenghua High tech is ± 0.10mm (better than HR1206J's ± 0.15mm), which is more friendly to ultra-thin PCBs.
 
4. Supply Chain and Cost
 
Fenghua High Tech:
 
Mainland spot supply is stable, priced at 13 yuan/batch (refer to similar product RC06K106JT).   
Compatible with alternative models of brands such as Guoju (such as RC06K106JT).   
 Ever Ohms：  
It needs to be purchased through agents, and the delivery time may be longer.   
High packaging flexibility (supporting small batch customization).   
 
Suggestion: Prioritize Fenghua for mass production; Choose HR1206J for small batch verification or high compliance requirements.
 
 
5. Quality and Reliability Additional Items
Working temperature range:
 
HR1206J supports temperatures between 55 ℃ and 155 ℃, but Fenghua has not clearly indicated this (default industrial standard).