Voltage References

Voltage references are electronic devices that provide a fixed output voltage. They provide a constant voltage regardless of external factors. This includes the load on the device, temperature or fluctuations in the power supply. Learn more in our Complete Guide to Voltage References.

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.

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%.

Voltage reference ICs come in a standard semiconductor package, such as PDIP, SO, SOIC and SOT-23. The pin count may also be combined with the package type, for example SO-8.

Types of voltage references

  • Two-terminal shunt voltage reference
  • Three-terminal series voltage reference
  • Band-gap voltage reference
  • Low noise voltage reference
  • Micropower voltage reference

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 analogue-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. Voltage references are also used in battery-powered devices.


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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 168-6826
製造零件編號TL431CDT
HK$1.113
個 (在毎卷:2500)
單位
2.5 - 36V SOIC Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.9 x 1.25mm
RS庫存編號 714-1114
製造零件編號TL431CDT
HK$3.204
/個 (每包:20個)
單位
2.5 - 36V SOIC Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.9 x 1.25mm
RS庫存編號 795-8880
製造零件編號TS3431CILT
HK$4.378
Each (On a Tape of 25)
單位
1.24 - 24V SOT-23 Adjustable ±0.25 % Surface Mount Shunt 100mA - 1.24 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 165-8238
製造零件編號TL1431CCT
HK$2.66
個 (在毎卷:3000)
單位
2.5 - 36V SOT-323 Programmable ±2.0 % Surface Mount Shunt 100mA 36 V 2.5 V 36 V 6 - - 2.2 x 1.35 x 1mm
RS庫存編號 920-8969
製造零件編號TL431ACZ
HK$0.97
個 (以毎袋:2500)
單位
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.7 x 3.7 x 4.4mm
RS庫存編號 165-6499
製造零件編號TS3431BILT
HK$1.827
個 (在毎卷:3000)
單位
1.24 - 24V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA - 1.24 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 165-6542
製造零件編號TS2431ILT
HK$1.617
個 (在毎卷:3000)
單位
2.5 - 24V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA - 2.5 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 145-8783
製造零件編號TL431CZ
HK$1.012
個 (在毎卷:2500)
單位
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.7 x 3.7 x 4.4mm
RS庫存編號 907-4700
製造零件編號TL1431ACL5T
HK$5.912
/個 (每包:20個)
單位
2.5 - 36V SOT-23 Programmable ±1.0 % Surface Mount Shunt 100mA 36 V 2.5 V 36 V 5 - - 3.05 x 1.75 x 1.3mm
RS庫存編號 714-7816
製造零件編號TL431ACZ-AP
HK$2.877
/個 (每包:50個)
單位
2.5 - 36V TO-92AP Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 5 x 4 x 5mm
RS庫存編號 168-8903
製造零件編號TS432ILT
HK$2.751
個 (在毎卷:3000)
單位
1.24 - 10V SOT-23 Adjustable ±1.0 % Surface Mount Shunt - - 1.24 V 10 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 714-7825
製造零件編號TL431AIDT
HK$2.709
/個 (每包:20個)
單位
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.9 x 1.25mm
RS庫存編號 795-7048
製造零件編號TS4040DILT-2.5
HK$4.766
Each (On a Tape of 25)
單位
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - 2.475 V 2.525 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 165-7719
製造零件編號TL431ACDT
HK$1.033
個 (在毎卷:2500)
單位
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt - - - - 8 - - -
RS庫存編號 165-6500
製造零件編號TS3431CILT
HK$1.932
個 (在毎卷:3000)
單位
1.24 - 24V SOT-23 Adjustable ±0.25 % Surface Mount Shunt 100mA - 1.24 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 686-4768
製造零件編號TL431ACZ
HK$2.625
/個 (每包:50個)
單位
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.7 x 3.7 x 4.4mm
RS庫存編號 168-7272
製造零件編號TL1431AIDT
HK$1.534
個 (在毎卷:2500)
單位
2.5 - 36V SOIC Adjustable ±0.25 % Surface Mount Shunt 100mA - 2.5 V 36 V 8 - - 5 x 4 x 1.5mm
RS庫存編號 795-7017
製造零件編號TS431ILT
HK$4.809
/個 (每包:10個)
單位
1.24 - 6V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 30mA - 1.215 V 1.265 V 5 - - 3 x 1.75 x 1.3mm
RS庫存編號 795-8638
製造零件編號TS3431BILT
HK$4.137
/個 (每包:25個)
單位
1.24 - 24V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA - 1.24 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 168-6901
製造零件編號TL431ACZ-AP
HK$1.115
Each (On a Tape of 2000)
單位
2.5 - 36V TO-92AP Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 5 x 4 x 5mm