BZ3 and BZ3C DC standard resistorsDetailed product description：

Description
BZ3 and BZ3C DC standard resistors are used for power supply testing, research institutions, factories, and schools to establish standards for DC resistance values. The standard resistor with a specification of 1 Ω in this product has been officially listed as a national benchmark by the China Institute of Metrology and has become the transmission standard for assessing standard resistors by metrology institutes in various regions. This product has won the National Silver Award.

Main technical performance:

1. Nominal resistance value: 10-3~105 (Ω)
2. Grade index: BZ3: 0.01% BZ3C: 0.002%
3. Power: Reference power: 0.05W nominal power: 0.5W ultimate power: 1W
4. First calibration deviation: BZ3:100ppM BZ3C: 20ppM
5. Dimensions: Φ 110 × 140 (mm)
6. Quality: 1kg
Note: The standard resistor should be measured in a container containing neutral transformer oil that is twice the volume of the standard resistor.

Model number Model	quantity (piece) Quantity	standard value Nominal Value	accuracy class Accuracy	standard power Nominal Power	Overall dimensions Dimension	Weight Weight
BZ3	nine	0.001Ω   1Ω    1000Ω 0.01Ω   10Ω   10000Ω 0.1Ω   100Ω  100000Ω	zero point zero one	0.5W	Ф110×140(mm)	1kg
BZ3 （250Ω）	one	250Ω	zero point zero two	0.2W
BZ3C	nine	0.001Ω   1Ω    1000Ω 0.01Ω   10Ω   10000Ω 0.1Ω   100Ω  100000Ω	zero point zero zero two	0.5W

BZ3 and BZ3C DC standard resistors