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庫存編號 781-4165
製造零件編號LM4040DTB-250GT3
HK$8.74
/個 (每包:10個)
單位
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - 2.5 V 3 - - 3.04 x 1.04 x 1.12mm
RS庫存編號 190-4445
製造零件編號MAX6138AEXR25+T
HK$26.593
個 (在毎卷:2500)
單位
2.5V SC-70 Precision 0.1% Surface Mount Shunt - - 2.49 V 2.502 V 3 - - 2.2 x 1.35 x 1mm
RS庫存編號 919-9023
製造零件編號LT1021DCS8-7PBF
HK$39.30
毎管:100 個
單位
7V SOIC Fixed ±0.05 % Surface Mount Series/Shunt 10mA 40 V 4.95 V 7 V 8 10 ppm/V 35 ppm/V, 150 ppm/V 5.004 x 3.988 x 1.498mm
RS庫存編號 158-5238
製造零件編號ADR444ARZ
HK$40.30
毎管:98 個
單位
4.096V SOIC Fixed ±0.13 % Surface Mount Series 10mA 20 V 4.091 V 4.101 V 8 20 ppm/V 50 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 709-2810
製造零件編號AD580UH
HK$611.93
單位
2.5V TO-52 Fixed ±0.4 % Through Hole Series - 40 V - - 3 2 mV 10 mV 5.84 x 5.84 x 3.81mm
RS庫存編號 923-3619
製造零件編號REF102CU
HK$78.077
毎管:75 個
單位
10V SOIC Fixed ±0.025 % Surface Mount Series - 40 V 9.998 V 10.003 V 8 1 ppm/V 20 ppm/mA 4.9 x 3.91 x 1.58mm
RS庫存編號 159-7717
製造零件編號REF43FZ
HK$178.93
毎管:48 個
單位
2.5V CERDIP Fixed ±0.06 % Through Hole Series 20mA 40 V 2.4985 V 2.5015 V 8 2 ppm/V 20 ppm/mA 10.29 x 7.87 x 3.56mm
RS庫存編號 145-7407
製造零件編號LT1461AIS8-2.5#PBF
HK$73.82
毎管:100 個
單位
2.5V SOIC Fixed ±0.04 % Surface Mount Series 100mA 20 V - 2.5 V 8 12 ppm/V 40 ppm/mA 5.004 x 3.988 x 1.498mm
RS庫存編號 121-9182
製造零件編號TL431BQDBZT
HK$4.543
個 (在毎卷:250)
單位
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS庫存編號 921-6939
製造零件編號LM385M3-2.5/NOPB
HK$4.41
個 (在毎卷:1000)
單位
2.5V SOT-23 Fixed ±0.8 % Surface Mount Shunt 20mA - - 2.5 V 3 - 20 mV 2.92 x 1.4 x 0.94mm
RS庫存編號 168-4242
製造零件編號ADR381ARTZ-R2
HK$14.97
個 (在毎卷:250)
單位
2.5V SOT-23 Fixed ±0.24 % Surface Mount Series 5mA 5 V 2.494 V 2.506 V 3 25 ppm/V 70 ppm/mA 3.04 x 1.4 x 1.02mm
RS庫存編號 761-7961
製造零件編號LT1021DCS8-7#PBF
HK$65.97
單位
7V SOIC Fixed ±0.05 % Surface Mount Series/Shunt 10mA 40 V 4.95 V 7 V 8 10 ppm/V 35 ppm/V, 150 ppm/V 5.004 x 3.988 x 1.498mm
RS庫存編號 190-0304
製造零件編號MAX6350ESA+
HK$117.23
單位
5V SOIC Fixed ±0.02 % Surface Mount Series 15mA 36 V 5 V 5 V 8 35 ppm/V 7 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 162-5935
製造零件編號TLVH431BCDBZT
HK$7.58
個 (在毎卷:250)
單位
1.24 - 18V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 70mA 20 V 1.24 V 18 V 3 - - 2.92 x 1.3 x 1mm
RS庫存編號 523-7370
製造零件編號REF192GPZ
HK$41.16
單位
2.5V PDIP Fixed ±0.08 % Through Hole Series 30mA 18 V 2.49 V 2.51 V 8 8 ppm/V 15 ppm/mA 9.27 x 7.24 x 3.43mm
RS庫存編號 160-3299
製造零件編號REF196GRUZ-REEL7
HK$20.435
個 (在毎卷:1000)
單位
3.3V TSSOP Fixed ±0.06 % Surface Mount Series 30mA 18 V - - 8 20 ppm/V 20 ppm/mA 3.1 x 4.5 x 1.05mm
RS庫存編號 732-8021
製造零件編號MAX6125EUR+T
HK$29.78
單位
2.5V SOT-23 Fixed ±1.0 % Surface Mount Series - 12.6 V 2.45 V 2.55 V 3 50 μV/V 1 mV/mA 3.04 x 1.4 x 1.02mm
RS庫存編號 165-6499
製造零件編號TS3431BILT
HK$1.524
個 (在毎卷:3000)
單位
1.24 - 24V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA - 1.24 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 177-3273
製造零件編號LM4040CYM3-2.5-TR
BrandMicrochip
HK$2.31
/個 (每包:50個)
單位
2.5V SOT-23 Precision ±0.5% Surface Mount Shunt 15mA 15 V - 2.5 V 3 - - 0.9 x 2.92 x 1.3mm
RS庫存編號 153-3353
製造零件編號LT1790ACS6-4.096#TRMPBF
HK$39.544
個 (在毎卷:500)
單位
4.096V TSOT-23 Fixed ±0.05 % Surface Mount Series - 20 V 4.091 V 4.101 V 6 170 ppm/V 160 ppm/mA 2.9 x 1.75 x 0.9mm