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 808-3959
製造零件編號CAT102TDI-GT3
HK$7.987
/個 (每包:10個)
單位
0.6V TSOT-23 Adjustable ±1.0 % Surface Mount Shunt - 20 V 20 V - 5 1 mV 8 mV 2.9 x 1.6 x 0.9mm
RS庫存編號 889-5137
製造零件編號MCP1525T-I/TT
BrandMicrochip
HK$4.861
個 (在毎卷:3000)
單位
2.5V SOT-23 Fixed ±1.0 % Surface Mount Series 20mA 7 V 2.475 V 2.525 V 3 350 μV/V 1.3 mV/mA 2.9 x 1.3 x 0.95mm
RS庫存編號 460-988
製造零件編號LM385M-2.5/NOPB
HK$6.37
/個 (每包:10個)
單位
2.5V SOIC Fixed ±3 % Surface Mount Shunt 20mA - - - 8 - 20 mV 4.9 x 3.9 x 1.45mm
RS庫存編號 162-5937
製造零件編號TLVH431BQDBZT
HK$7.428
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 661-9653
製造零件編號TLVH431BQDBZT
HK$11.32
/個 (每包:5個)
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 121-9267
製造零件編號TL431AIDR
HK$0.922
個 (在毎卷:2500)
單位
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.91 x 1.58mm
RS庫存編號 534-3065
製造零件編號LM4040DIZ-5.0/NOPB
HK$5.28
單位
5V TO-92 Precision 1% Through Hole Shunt 15mA - - - 3 - - 5.2 x 4.19 x 5.2mm
RS庫存編號 781-5553
製造零件編號TLV431BSN1T1G
HK$2.92
/個 (每包:20個)
單位
1.24 - 16V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 20mA - 1.24 V 16 V 3 - - 3.04 x 1.04 x 1.01mm
RS庫存編號 168-4199
製造零件編號ADR02ARZ-REEL7
HK$15.954
個 (在毎卷:1000)
單位
5V SOIC Fixed ±0.1 % Surface Mount Series 10mA 36 V 4.995 V 5.005 V 8 40 ppm/V 80 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 122-1254
製造零件編號ZTL431AH6TA
HK$1.13
個 (在毎卷:3000)
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 540-4154
製造零件編號MAX6225ACSA+
HK$72.28
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 178-8930
製造零件編號TL431AILP
HK$1.743
個 (在毎卷:1000)
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 121-8839
製造零件編號LM4040BIM3-2.5/NOPB
HK$4.493
個 (在毎卷:1000)
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 162-5085
製造零件編號LM4132DMF-4.1/NOPB
HK$12.786
個 (在毎卷:1000)
單位
4.096V SOT-23 Fixed ±0.4 % Surface Mount Series 20mA 6 V - - 5 100 ppm/V 25 ppm/mA 2.92 x 1.6 x 1.02mm
RS庫存編號 517-2172
製造零件編號TL1431CD
HK$3.606
/個 (每包:5個)
單位
2.5 - 36V SOIC Adjustable ±0.4 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.91 x 1.58mm
RS庫存編號 145-1262
製造零件編號LM385LPE3-1-2
HK$2.487
個 (以毎袋:1000)
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 732-1345
製造零件編號LM385BLPR-1-2
HK$6.458
/個 (每包:5個)
單位
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt 20mA - 1.22 V 1.25 V 3 - 20 mV 5.21 x 4.19 x 5.34mm
RS庫存編號 461-9535
製造零件編號REF3020AIDBZT
HK$13.416
/個 (每包:5個)
單位
2.048V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 2.044 V 2.052 V 3 290 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS庫存編號 162-4727
製造零件編號LM4040AIZ-4.1/NOPB
HK$7.37
個 (以毎盒:1800)
單位
4.1V TO-92 Fixed ±0.1 % Through Hole Shunt 15mA - - - 3 - 7 mV 5.2 x 4.19 x 5.2mm
RS庫存編號 533-5799
製造零件編號LM336Z-2.5/NOPB
HK$6.62
單位
2.5V TO-92 Fixed ±4 % Through Hole Shunt 10mA - 2.39 V 2.59 V 3 - 10 mV 5.2 x 4.19 x 5.2mm