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 101-8304
製造零件編號LM385Z-1.2G
HK$2.21
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$4.28
/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 163-1004
製造零件編號NCP431ACSNT1G
HK$0.779
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 776-0759
製造零件編號NCP431ACSNT1G
HK$2.60
/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 463-246
製造零件編號TL431CLPG
HK$2.65
/個 (每包:50個)
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
RS庫存編號 145-3275
製造零件編號TL431CLPG
HK$0.941
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
RS庫存編號 808-3959
製造零件編號CAT102TDI-GT3
HK$8.15
/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 163-0424
製造零件編號CAT102TDI-GT3
HK$3.88
個 (在毎卷:3000)
單位
- 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 781-5553
製造零件編號TLV431BSN1T1G
HK$2.936
/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 774-3486
製造零件編號LM385BZ-2.5G
HK$5.56
/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 163-2419
製造零件編號LM385Z-2.5G
HK$2.21
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 463-498
製造零件編號LM385Z-2.5G
HK$4.28
/個 (每包:10個)
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 162-9967
製造零件編號LM385BZ-1.2G
HK$2.36
個 (以毎袋:2000)
單位
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt - - - - 3 - - 5.2 x 4.19 x 5.33mm
RS庫存編號 163-1234
製造零件編號TLV431BSN1T1G
HK$1.15
個 (在毎卷:3000)
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 862-4922
製造零件編號LM385BZ-1.2G
HK$4.58
/個 (每包:25個)
單位
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt - - - - 3 - - 5.2 x 4.19 x 5.33mm
RS庫存編號 163-0923
製造零件編號LM385BZ-2.5G
HK$2.36
個 (以毎袋:2000)
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 864-7878
製造零件編號TL431ACDR2G
HK$2.94
/個 (每包:50個)
單位
2.5 - 36V SOIC Programmable ±1.0 % Surface Mount Shunt 100mA - 2.44 V 36 V 8 53 mV 25 mV 5 x 4 x 1.5mm
RS庫存編號 166-3075
製造零件編號LM431SACMFX
HK$0.616
個 (在毎卷:3000)
單位
2.5 - 36V SOT-23F Adjustable ±2.0 % Surface Mount Shunt 100 (Cathode)mA - 2.5 (Cathode) V 36 V 3 - - 3 x 1.7 x 1mm
RS庫存編號 781-4386
製造零件編號NCP431AISNT1G
HK$2.60
Each (On a Tape of 50)
單位
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA - - 36 V 3 - - 3.04 x 1.04 x 1.01mm
RS庫存編號 807-8783
製造零件編號KA431SAMF2TF
HK$2.34
Each (On a Tape of 50)
單位
2.5 - 36V SOT-23F Programmable ±1.0 % Surface Mount Shunt - - - 36 V 3 - - 3 x 1.7 x 1mm