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 809-9225
製造零件編號ADR512ARTZ-REEL7
HK$11.712
/個 (每包:5個)
單位
1.2V SOT-23 Fixed ±0.3 % Surface Mount Shunt - - 1.1965 V 1.2035 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 919-9360
製造零件編號LT6654AHS6-2.5#TRMPBF
HK$36.608
個 (在毎卷:500)
單位
2.5V TSOT-23 Fixed ±0.05 % Surface Mount Series 10mA - - 2.5 V 6 10 ppm/V 20 ppm/V, 30 ppm/V 2.9 x 1.75 x 0.9mm
RS庫存編號 761-5905
製造零件編號LM4040DIZ-4.1/NOPB
HK$5.098
/個 (每包:5個)
單位
4.096V TO-92 Fixed ±1.0 % Through Hole Shunt 15mA - - 4.1 V 3 - - 5.2 x 4.19 x 5.2mm
RS庫存編號 145-7357
製造零件編號TLV431ACDBVT
HK$4.769
個 (在毎卷:250)
單位
1.24 - 6V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 15mA - 1.24 V 6 V 5 - - 2.9 x 1.6 x 1.15mm
RS庫存編號 516-873
製造零件編號ISL60002BIH330Z-TK
BrandIntersil
HK$44.25
單位
3V SOT-23 Fixed ±0.03 % Surface Mount Series 7mA 6.5 V - - 3 250 μV/V 150 μV/mA 3.04 x 1.4 x 0.94mm
RS庫存編號 145-6530
製造零件編號LM385Z-2.5/NOPB
HK$2.433
個 (以毎盒:1800)
單位
2.5V TO-92 Fixed ±3 % Through Hole Shunt 20mA - - - 3 - 20 mV 5.2 x 4.19 x 5.2mm
RS庫存編號 795-7048
製造零件編號TS4040DILT-2.5
HK$3.987
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 121-8985
製造零件編號LM4120IM5-5.0/NOPB
HK$9.449
個 (在毎卷:1000)
單位
5V SOT-23 Fixed ±0.5 % Surface Mount Series 5mA 14 V - - 5 0.008 %/V 0.12 %/mA 2.92 x 1.6 x 1.02mm
RS庫存編號 761-8904
製造零件編號LT6654AHS6-2.5#TRMPBF
HK$52.38
單位
2.5V TSOT-23 Fixed ±0.05 % Surface Mount Series 10mA - - 2.5 V 6 10 ppm/V 20 ppm/V, 30 ppm/V 2.9 x 1.75 x 0.9mm
RS庫存編號 165-4577
製造零件編號REF02CESA+
BrandMaxim
HK$27.519
毎管:100 個
單位
5V SOIC Fixed ±1.0 % Surface Mount Series - 33 V 4.95 V 5.05 V 8 0.018 %/V 0.018 %/mA 5 x 4 x 1.5mm
RS庫存編號 162-5828
製造零件編號LM4040D25IDCKT
HK$5.551
個 (在毎卷:250)
單位
2.5V SC-70 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 5 - 8 mV 2 x 1.25 x 0.9mm
RS庫存編號 160-3345
製造零件編號ADR03AKSZ-REEL7
HK$15.558
個 (在毎卷:3000)
單位
2.5V SC-70 Fixed ±0.2 % Surface Mount Series - 36 V 2.495 V 2.505 V 5 40 ppm/V 80 ppm/mA 2.2 x 1.35 x 1mm
RS庫存編號 124-2434
製造零件編號TL431AIDBZR,215
BrandNexperia
HK$0.736
個 (在毎卷:3000)
單位
2.5 - 36V SOT-23 Adjustable 1% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS庫存編號 759-0440
製造零件編號ADR03ARZ-REEL7
HK$21.16
單位
2.5V SOIC Fixed ±0.2 % Surface Mount Series 10mA 36 V 2.495 V 2.505 V 8 40 ppm/V 80 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 761-8484
製造零件編號LT1790BIS6-5#TRMPBF
HK$35.49
單位
5V TSOT-23 Fixed ±0.1 % Surface Mount Series - 20 V 4.995 V 5.005 V 6 220 ppm/V 250 ppm/V, 300 ppm/V 2.9 x 1.75 x 0.9mm
RS庫存編號 661-9754
製造零件編號TLE2426CP
HK$19.126
/個 (每包:5個)
單位
- PDIP Adjustable - Through Hole Series 20mA 40 V 1.98 V 20.2 V 8 - - 9.81 x 6.35 x 4.57mm
RS庫存編號 709-8177
製造零件編號ADR293GRZ
HK$41.24
單位
5V SOIC Fixed ±0.2 % Surface Mount Series 5mA 18 V 4.99 V 5.01 V 8 150 ppm/V 150 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 121-9175
製造零件編號LM4040C25QDBZT
HK$6.307
個 (在毎卷:250)
單位
2.5V SOT-23 Fixed ±0.5 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 1mm
RS庫存編號 158-0257
製造零件編號ADR381ARTZ-REEL7
HK$9.618
個 (在毎卷:3000)
單位
2.5V SOT-23 Fixed ±0.24 % Surface Mount Series 5mA 18 V 2.494 V 2.506 V 3 25 ppm/V 70 ppm/mA 2.9 x 1.3 x 1.02mm
全新
RS庫存編號 186-9362
製造零件編號TL431BIDG
HK$3.182
/個 (每包:25個)
單位
2.49V SOIC Programmable 0.4% Surface Mount Shunt - 2.51 V - 36 V 8 - - 5 x 4 x 1.5mm