Voltage References

Voltage references are electronic devices that provide a fixed voltage. They provide a constant voltage regardless of external factors like the load on the device or fluctuations in the power supply.


Voltage references have different characteristics depending on their purpose. Voltage references used in laboratory applications are designed to have extremely high precision and accuracy, whereas those used as regulators for computer power supplies are much cheaper but less precise. 


Types of voltage references

There are many different kinds of voltage references, generally categorised by type, tolerance, rated voltage, reference voltage and rated current. The most common tolerances are ±2%, ±1% and ±0.5%, but voltage references are available even up to ±40%. 


What are voltage references used for? 

Voltage references can be used for a variety of different precision measurement and control systems such as power supplies in personal computers and analog-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. 


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Description Price Nominal Voltage Package Type Reference Type Initial Accuracy Mounting Type Topology Maximum Output Current Maximum Input Voltage Minimum Output Voltage Maximum Output Voltage Pin Count Line Regulation Load Regulation Dimensions
RS Stock No. 797-4829
Mfr. Part No.TL431AQDBZR,215
BrandNexperia
HK$2.43
Each (On a Tape of 50)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 165-9765
Mfr. Part No.TL431AQDBZR,215
BrandNexperia
HK$0.736
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 165-9766
Mfr. Part No.TL431FDT,215
BrandNexperia
HK$0.631
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 165-9767
Mfr. Part No.TL431IDBZR,215
BrandNexperia
HK$0.673
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 165-9799
Mfr. Part No.TL431BMFDT,215
BrandNexperia
HK$1.105
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 170-4870
Mfr. Part No.TL431BFDT,215
BrandNexperia
HK$0.94
Each (On a Reel of 3000)
units
2.495V SOT-23 Adjustable, Precision 0.5% Surface Mount Shunt 100mA 37 V 2483 mV 2507 mV 3 -2.7 mV/V - 3 x 1.4 x 1mm
RS Stock No. 165-9768
Mfr. Part No.TL431QDBZR,215
BrandNexperia
HK$0.673
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 124-2434
Mfr. Part No.TL431AIDBZR,215
BrandNexperia
HK$0.736
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable 1% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 797-4810
Mfr. Part No.TL431AMFDT,215
BrandNexperia
HK$1.118
Each (In a Pack of 50)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 169-7200
Mfr. Part No.TL431AMFDT,215
BrandNexperia
HK$0.834
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 797-4848
Mfr. Part No.TL431QDBZR,215
BrandNexperia
HK$2.083
Each (On a Tape of 50)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 165-9764
Mfr. Part No.TL431BIDBZR,215
BrandNexperia
HK$1.184
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 797-4826
Mfr. Part No.TL431BIDBZR,215
BrandNexperia
HK$1.956
Each (In a Pack of 25)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 797-4841
Mfr. Part No.TL431FDT,215
BrandNexperia
HK$0.839
Each (In a Pack of 50)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 165-9762
Mfr. Part No.TL431AFDT,215
BrandNexperia
HK$0.834
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 797-4813
Mfr. Part No.TL431AFDT,215
BrandNexperia
HK$1.979
Each (In a Pack of 50)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 797-4835
Mfr. Part No.TL431BMFDT,215
BrandNexperia
HK$1.368
Each (In a Pack of 30)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 797-4844
Mfr. Part No.TL431IDBZR,215
BrandNexperia
HK$1.481
Each (On a Tape of 50)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 797-4838
Mfr. Part No.TL431BQDBZR,215
BrandNexperia
HK$3.71
Each (In a Pack of 25)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 124-2435
Mfr. Part No.TL431BQDBZR,215
BrandNexperia
HK$1.042
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable 0.5% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm