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 121-9180
製造零件編號TL431AQDBZT
HK$3.186
個 (在毎卷:250)
單位
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS庫存編號 661-9809
製造零件編號TL431ACLPR
HK$1.722
/個 (每包:10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 168-6332
製造零件編號TL431ACLPR
HK$1.041
個 (在毎卷:2000)
單位
2.5 - 36V SOIC Adjustable ±0.5 % 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 168-4288
製造零件編號TL431AQDBZR
HK$0.819
個 (在毎卷:3000)
單位
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA - - 36 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 145-1010
製造零件編號TL431ACLP
HK$0.761
個 (以毎袋:1000)
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 809-5378
製造零件編號TL431AQDBZR
HK$3.25
/個 (每包:5個)
單位
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA - - 36 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 428-436
製造零件編號TL431ACLP
HK$9.23
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 661-9524
製造零件編號TL431AQDBZT
HK$4.994
/個 (每包:5個)
單位
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS庫存編號 922-2492
製造零件編號REF3033AIDBZT
HK$8.708
個 (在毎卷:250)
單位
3.3V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 3.294 V 3.3 V 3 400 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS庫存編號 101-8304
製造零件編號LM385Z-1.2G
HK$1.979
個 (以毎袋:2000)
單位
1.235V TO-92 Fixed ±2.0 % Through Hole Shunt 20mA - 1.205 V 1.26 V 3 - 20 mV 5.2 x 4.19 x 5.33mm
RS庫存編號 463-482
製造零件編號LM385Z-1.2G
HK$3.435
/個 (每包:10個)
單位
1.235V TO-92 Fixed ±2.0 % Through Hole Shunt 20mA - 1.205 V 1.26 V 3 - 20 mV 5.2 x 4.19 x 5.33mm
RS庫存編號 661-9442
製造零件編號REF3033AIDBZT
HK$13.412
/個 (每包:5個)
單位
3.3V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 3.294 V 3.3 V 3 400 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS庫存編號 169-5617
製造零件編號TL431CLPR
HK$0.522
個 (在毎卷:2000)
單位
2.5 - 36V TO-92 Adjustable ±2.0 % 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 283-845
製造零件編號TL431CLP
HK$10.38
單位
2.5 - 36V TO-92 Adjustable ±2.0 % 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 661-9827
製造零件編號TL431CLPR
HK$1.71
/個 (每包:10個)
單位
2.5 - 36V TO-92 Adjustable ±2.0 % 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 163-1004
製造零件編號NCP431ACSNT1G
HK$0.629
個 (在毎卷:3000)
單位
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA - 2.475 V 36 V 3 - - 3.04 x 1.4 x 1.01mm
RS庫存編號 824-5466
製造零件編號ZRC330F02TA
HK$5.344
/個 (每包:10個)
單位
3.3V SOT-23 Fixed ±1.0 % Surface Mount Series - - - - 3 - - 3 x 1.4 x 1.1mm
RS庫存編號 776-0759
製造零件編號NCP431ACSNT1G
HK$1.951
/個 (每包:10個)
單位
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA - 2.475 V 36 V 3 - - 3.04 x 1.4 x 1.01mm
RS庫存編號 121-8266
製造零件編號TL431CLP
HK$0.98
個 (以毎盒:1000)
單位
2.5 - 36V TO-92 Adjustable ±2.0 % 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 145-3275
製造零件編號TL431CLPG
HK$0.699
個 (以毎袋:2000)
單位
2.5 - 36V TO-92 Adjustable ±2.2 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 5.2 x 4.19 x 5.33mm