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 111-1104
製造零件編號REF02CPZ
HK$26.499
毎管:50 個
單位
5V PDIP Fixed ±1.0 % Through Hole Series 8mA 40 V 4.95 V 5.05 V 8 150 ppm/V 150 ppm/mA 9.27 x 7.24 x 3.43mm
RS庫存編號 774-3486
製造零件編號LM385BZ-2.5G
HK$5.448
/個 (每包:5個)
單位
2.5V TO-92 Fixed ±1.5 % Through Hole Shunt 20mA - - 2.5 V 3 - - 5.2 x 4.19 x 5.33mm
RS庫存編號 912-6375
製造零件編號ADR435BRZ
HK$61.887
毎管:98 個
單位
5V SOIC Fixed ±0.04 % Surface Mount Series 30mA 20 V 4.998 V 5.002 V 8 20 ppm/V 15 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 121-9495
製造零件編號TL431ASA-7
HK$0.646
個 (在毎卷:3000)
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 779-8975
製造零件編號LT1034BCZ-2.5#PBF
HK$55.76
/個 (每包:2個)
單位
2.5V TO-92 Fixed ±1.6 % Through Hole Shunt 20mA - - 2.5 V 3 - - 4.572 x 4.572 x 3.556mm
RS庫存編號 412-349
製造零件編號ADR02ARZ
HK$24.196
/個 (每包:5個)
單位
5V SOIC Fixed ±0.1 % Surface Mount Series 10mA 36 V 4.995 V 5.005 V 8 30 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 533-8467
製造零件編號LM4040AIM3-4.1/NOPB
HK$15.72
/個 (每包:5個)
單位
4.096V SOT-23 Fixed ±0.1 % Surface Mount Shunt 15mA - - - 3 - 7 mV 2.92 x 1.3 x 0.93mm
RS庫存編號 121-8298
製造零件編號REF5025AID
HK$26.333
毎管:75 個
單位
2.5V SOIC Fixed ±0.05 % Surface Mount Series 10mA 18 V - - 8 1 ppm/V 50 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 921-0543
製造零件編號AP4310AMTR-G1
HK$3.489
/個 (每包:50個)
單位
2.5V SOIC Fixed ±0.4 % Surface Mount Shunt 80mA 36 V - - 8 - - 5.1 x 4 x 1.45mm
RS庫存編號 106-6989
製造零件編號ADR02ARZ
HK$18.365
毎管:98 個
單位
5V SOIC Fixed ±0.1 % Surface Mount Series 10mA 36 V 4.995 V 5.005 V 8 30 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 713-9899
製造零件編號NJM431M
HK$6.40
/個 (每包:5個)
單位
2.5 - 36V DMP Adjustable ±2.2 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - 0.1 % 5 x 5 x 1.6mm
RS庫存編號 163-2419
製造零件編號LM385Z-2.5G
HK$2.196
個 (以毎袋:2000)
單位
2.5V TO-92 Fixed ±3 % Through Hole Shunt 20mA - 2.425 V 2.575 V 3 - 20 mV 5.2 x 4.19 x 5.33mm
RS庫存編號 522-8859
製造零件編號AD586JNZ
HK$84.71
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 709-1545
製造零件編號AD1582BRTZ-REEL7
HK$18.954
/個 (每包:5個)
單位
2.5V SOT-23 Fixed ±0.08 % Surface Mount Series 5mA 12 V 2.498 V 2.502 V 3 25 μV/V 3.5 mV/mA 2.9 x 1.3 x 1.02mm
RS庫存編號 168-4286
製造零件編號LM4040B25IDBZT
HK$13.083
個 (在毎卷:250)
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 922-2230
製造零件編號LMV431BIMF/NOPB
HK$4.19
個 (在毎卷:1000)
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 158-1879
製造零件編號AD581SH
HK$202.35
個 (以毎盒:100)
單位
10V TO-5 Fixed ±0.3 % Through Hole Series 10mA 40 V - - 3 0.005 %/V 500 μV/mA 9.4 x 9.4 x 4.7mm
RS庫存編號 527-984
製造零件編號TL431AILPE3
HK$2.685
/個 (每包:25個)
單位
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS庫存編號 165-8407
製造零件編號LM4040D30FTA
HK$1.585
個 (在毎卷:3000)
單位
3V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 620-0802
製造零件編號REF02AU
HK$41.158
/個 (每包:5個)
單位
5V SOIC Fixed ±0.2 % Surface Mount Series - 40 V 4.985 V 5.015 V 8 0.01 %/V 0.01 %/mA 4.9 x 3.91 x 1.58mm