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 751-5221
製造零件編號ZTL431AH6TA
HK$3.166
Each (On a Tape of 25)
單位
2.5V SC-70 Adjustable ±1.0 % Surface Mount Shunt 100mA 20 V 2.475 V 20 V 6 - - 2 x 1.35 x 1mm
RS庫存編號 461-9563
製造零件編號REF3040AIDBZT
HK$13.416
/個 (每包:5個)
單位
4.096V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 4.088 V 4.104 V 3 410 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS庫存編號 535-9559
製造零件編號LM4040BIM3-2.5/NOPB
HK$10.548
/個 (每包:5個)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 0.93mm
RS庫存編號 809-5374
製造零件編號TL431AILP
HK$3.274
/個 (每包:5個)
單位
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA - - 36 V 3 - - 5.21 x 4.19 x 5.34mm
RS庫存編號 165-9104
製造零件編號MAX6225ACSA+
HK$93.30
毎管:100 個
單位
2.5V SOIC Fixed ±0.02 % Surface Mount Series 15mA 40 V 2.499 V 2.501 V 8 18 ppm/V 1 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 162-5824
製造零件編號LM4040C41IDBZR
HK$3.01
個 (在毎卷:3000)
單位
4.096V SOT-23 Fixed ±0.5 % Surface Mount Shunt 15mA - - - 3 - 7 mV 2.92 x 1.3 x 1mm
RS庫存編號 639-4496
製造零件編號LM4120AIM5-2.5/NOPB
HK$18.944
/個 (每包:5個)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Series 5mA 14 V - - 5 0.008 %/V 0.12 %/mA 2.92 x 1.6 x 1.02mm
RS庫存編號 106-7078
製造零件編號AD586JNZ
HK$65.993
毎管:50 個
單位
5V PDIP Fixed ±0.4 % Through Hole Series 10mA 36 V 4.98 V 5.02 V 8 100 μV/V 400 μV/mA 9.27 x 7.24 x 3.43mm
RS庫存編號 809-5217
製造零件編號LM4040B25IDBZT
HK$16.356
Each (On a Tape of 20)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 80µA - - 2.5 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 761-6356
製造零件編號LMV431BIMF/NOPB
HK$8.782
/個 (每包:5個)
單位
1.24 - 30V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 15mA - 1.224 V 1.259 V 3 - - 2.92 x 1.3 x 0.93mm
RS庫存編號 169-7423
製造零件編號ZHT431F02TA
HK$3.90
個 (在毎卷:3000)
單位
2.5V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 20 V - 20 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 912-6665
製造零件編號ADR444BRZ
HK$57.859
毎管:98 個
單位
4.096V SOIC Fixed ±0.04 % Surface Mount Series 10mA 20 V 4.094 V 4.098 V 8 20 ppm/V 50 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 738-5333
製造零件編號TL431ASA-7
HK$2.577
/個 (每包:50個)
單位
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 40 V 2.5 V 36 V 3 - - 3 x 1.4 x 1mm
RS庫存編號 661-9341
製造零件編號LM4040C41IDBZR
HK$7.468
/個 (每包:5個)
單位
4.096V SOT-23 Fixed ±0.5 % Surface Mount Shunt 15mA - - - 3 - 7 mV 2.92 x 1.3 x 1mm
RS庫存編號 661-9304
製造零件編號LM4040B25IDBZR
HK$15.97
/個 (每包:5個)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 1mm
RS庫存編號 162-5820
製造零件編號LM4040B25IDBZR
HK$9.506
個 (在毎卷:3000)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 1mm
RS庫存編號 709-4285
製造零件編號LM385LPE3-1-2
HK$6.48
/個 (每包:5個)
單位
1.235V TO-92 Fixed ±2.0 % Through Hole Shunt 20mA - 1.21 V 1.26 V 3 - 20 mV 4.83 x 3.43 x 3.68mm
RS庫存編號 758-9727
製造零件編號AD688AQ
HK$315.31
單位
10V CERDIP Fixed ±0.05 % Through Hole Series 10mA 36 V - 10 V 16 ±200 μV/V ±200 μV/mA 21.34 x 7.87 x 3.56mm
RS庫存編號 661-9297
製造零件編號LM385DRG4-2-5
HK$4.598
/個 (每包:5個)
單位
2.5V SOIC Fixed ±3 % Surface Mount Shunt 20mA - 2.425 V 2.575 V 8 - 20 mV 4.9 x 3.91 x 1.58mm
RS庫存編號 822-5907
製造零件編號LT1634BCS8-1.25#PBF
HK$48.135
/個 (每包:2個)
單位
1.25V SOIC Fixed ±0.05 % Surface Mount Shunt 1µA - 1.25 V 5 V 8 - - 5.004 x 3.98 x 1.498mm