Request Quote
(Ships tomorrow)
REF3012AIDBZT Equivalent & Substitute Parts
Part Overview
The REF3012AIDBZT is a series voltage reference IC manufactured by Texas Instruments, designed for precision power management applications. This fixed 1.25V reference with ±0.2% tolerance and 25 mA output current operates across the -40°C to 125°C temperature range in a SOT-23-3 surface mount package. The device is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design flexibility, or application-specific parameter optimization.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Output (Fixed) | 1.25V | V |
| Current - Output | 25 mA | mA |
| Tolerance | ±0.2% | % |
| Temperature Coefficient | 75 | ppm/°C |
| Voltage - Input Range | 1.8V ~ 5.5V | V |
| Operating Temperature | -40°C ~ 125°C | °C |
| Package / Case | SOT-23-3 | - |
| Mounting Type | Surface Mount | - |
Substitute Part Grouping Explanation
Substitution eligibility for the REF3012AIDBZT is determined by the following criteria:
Primary Substitution Parameters:
- Fixed output voltage of 1.25V
- SOT-23-3 package compatibility
- Surface mount mounting type
- ROHS3 compliance and MSL Level 1 rating
- Active product status
Secondary Compatibility Factors:
- Output current capability (minimum 7 mA required for substitute parts)
- Tolerance specification (±0.2% or better)
- Input voltage range overlap (minimum 2.7V ~ 5.5V)
- Operating temperature range (-40°C minimum, 85°C or higher maximum)
Substitute parts are grouped by tolerance grade and output current capacity. Parts with tighter tolerance specifications (±0.08%) and lower supply current consumption represent enhanced performance alternatives. Parts with relaxed tolerance (±0.4%) provide cost-effective alternatives where precision requirements are less stringent.
Parameter Comparison
| Part Number | Manufacturer | Voltage Output | Current Output | Tolerance | Temp Coeff | Input Range | Temp Range | Packaging |
|---|---|---|---|---|---|---|---|---|
| REF3012AIDBZT | Texas Instruments | 1.25V | 25 mA | ±0.2% | 75 ppm/°C | 1.8V ~ 5.5V | -40°C ~ 125°C | CT |
| ISL60002CIH312Z-TK | Renesas Electronics | 1.25V | 7 mA | ±0.2% | 20 ppm/°C | 2.7V ~ 5.5V | -40°C ~ 85°C | TR |
| ISL60002DIH312Z-TK | Renesas Electronics | 1.25V | 7 mA | ±0.4% | 20 ppm/°C | 2.7V ~ 5.5V | -40°C ~ 85°C | CT |
| ISL60002DIH312Z-T7A | Renesas Electronics | 1.25V | 7 mA | ±0.4% | 20 ppm/°C | 2.7V ~ 5.5V | -40°C ~ 85°C | TR |
| MAX6101EUR+T | Analog Devices/Maxim | 1.25V | 5 mA | ±0.4% | 75 ppm/°C | 2.5V ~ 12.6V | -40°C ~ 85°C | CT |
| MAX6018BEUR12+T | Analog Devices/Maxim | 1.263V | 1 mA | ±0.4% | 50 ppm/°C | 1.8V ~ 5.5V | -40°C ~ 85°C | TR |
| ISL21080CIH315Z-TK | Renesas Electronics | 1.5V | 7 mA | ±0.5% | 50 ppm/°C | 2.7V ~ 5.5V | -40°C ~ 85°C | CT |
| ISL60002BIH312Z-TK | Renesas Electronics | 1.25V | 7 mA | ±0.08% | 20 ppm/°C | 2.7V ~ 5.5V | -40°C ~ 85°C | TR |
Engineering Selection Recommendations
Direct Substitutes (1.25V Output, Matching Tolerance):
ISL60002CIH312Z-TK and ISL60002BIH312Z-TK maintain the 1.25V output specification with tolerance grades of ±0.2% and ±0.08% respectively. Both are Renesas Electronics FGA™ series devices with Active status and ROHS3 compliance. These parts are suitable for applications where the REF3012AIDBZT is unavailable. Note that output current is reduced to 7 mA, requiring verification that load current does not exceed this specification.
Enhanced Performance Alternative:
ISL60002BIH312Z-TK offers superior tolerance (±0.08%) and significantly lower temperature coefficient (20 ppm/°C versus 75 ppm/°C), providing enhanced stability across temperature extremes. Supply current consumption is reduced to 900 nA, beneficial for battery-powered applications. Operating temperature maximum is limited to 85°C.
Cost-Effective Alternatives:
ISL60002DIH312Z-TK and ISL60002DIH312Z-T7A provide 1.25V output with relaxed ±0.4% tolerance. These Renesas devices maintain 7 mA output current and 20 ppm/°C temperature coefficient. Packaging options include both Cut Tape (CT) and Tape & Reel (TR) formats.
Maxim Integrated Options:
MAX6101EUR+T delivers 1.25V with ±0.4% tolerance and 5 mA output current. Input voltage range extends to 12.6V, supporting higher supply voltages. Temperature coefficient matches the REF3012AIDBZT at 75 ppm/°C. Operating temperature is limited to -40°C ~ 85°C.
Output Voltage Variants:
ISL21080CIH315Z-TK provides 1.5V output with ±0.5% tolerance and 7 mA current. This part is suitable only when 1.5V reference voltage is acceptable for the application.
MAX6018BEUR12+T outputs 1.263V with ±0.4% tolerance and 1 mA current, suitable for low-current reference applications only.
Frequently Asked Questions (FAQ)
Q: Can ISL60002CIH312Z-TK directly replace REF3012AIDBZT?
A: ISL60002CIH312Z-TK matches the 1.25V output voltage and ±0.2% tolerance specification. Both devices use SOT-23-3 packaging and are ROHS3 compliant. However, output current is reduced from 25 mA to 7 mA. Substitution is valid only if circuit load current does not exceed 7 mA. Input voltage minimum increases from 1.8V to 2.7V; verify supply voltage compatibility.
Q: What is the difference between ISL60002BIH312Z-TK and ISL60002CIH312Z-TK?
A: Both parts output 1.25V with 7 mA current in SOT-23-3 packaging. ISL60002BIH312Z-TK offers tighter tolerance (±0.08% versus ±0.2%) and lower temperature coefficient (20 ppm/°C versus 20 ppm/°C). Supply current is 900 nA for both. The primary difference is tolerance grade; ISL60002BIH312Z-TK is specified for higher precision applications.
Q: Why do substitute parts have lower output current than the REF3012AIDBZT?
A: The REF3012AIDBZT is specified for 25 mA output current. Most substitute parts in the Renesas ISL60002 and ISL21080 series are rated for 7 mA maximum. Maxim MAX6101EUR+T provides 5 mA. Application circuits must be designed to operate within these current limits. If higher output current is required, alternative reference architectures may be necessary.
Q: Is MAX6018BEUR12+T suitable as a substitute?
A: MAX6018BEUR12+T outputs 1.263V, not 1.25V, and is rated for only 1 mA output current. This part is not a direct substitute for REF3012AIDBZT. It is suitable only for applications where 1.263V reference voltage and 1 mA maximum load current are acceptable.
Q: What is the impact of operating temperature range differences?
A: REF3012AIDBZT operates to 125°C maximum. Most substitute parts are rated to 85°C maximum. Applications requiring operation above 85°C cannot use these substitutes. Verify maximum operating temperature requirements before selection.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the REF3012AIDBZT specification.
Q: What packaging formats are available?
A: Substitute parts are available in Cut Tape (CT) and Tape & Reel (TR) formats. REF3012AIDBZT is supplied in Cut Tape format. Verify packaging requirements for automated assembly processes.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts