Part A
AP4313KTR-G1
Dioden Incorporated
- Lifecycle
- Active
- Stock
- 3607 Stückzahl
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AP4313KTR-G1 and AP431ASAG-7 are both adjustable shunt voltage references from Diodes Incorporated sharing a common SOT-23 package and reference architecture, making them a viable functional replacement candidate. However, the AP4313KTR-G1 integrates a built-in current-sense comparator and offers a wider adjustable output range, while the AP431ASAG-7 is a conventional three-terminal shunt regulator with tighter reference tolerance. Designers should validate the output voltage range, reference accuracy, and current-sense functionality against their specific application requirements before substituting one for the other.
Output Type
High match
Package Type
High match
Reference Voltage Tolerance
Validation required
Current-Sense Comparator
Not compatible
Parts at a glance
Part B
AP431ASAG-7
Dioden Incorporated
- Lifecycle
- Active
- Stock
- 3034 Stückzahl
- Package
- SOT-23-3
- Series
- PMIC Spannung Referenz
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AP4313KTR-G1 | AP431ASAG-7 | Why it matters |
|---|---|---|---|
| Reference Voltage (Vref) | 1.24 V (typical) | 2.495 V (typical) | The reference voltage sets the regulated output level; a different Vref means the feedback divider must be redesigned for equivalent output. |
| Reference Voltage Tolerance | ±0.5% (typical grade) | ±0.5% (typical grade) | Tolerance directly affects output accuracy; matching grades preserve regulation precision in the application. |
| Output Voltage Range | Vref to 18 V (cathode) | Vref to 36 V (cathode) | The maximum cathode voltage limits the output rail the shunt regulator can control; a lower limit restricts higher-voltage designs. |
| Minimum Cathode Current | 0.1 mA (typical) | 1 mA (typical) | Minimum operating current determines the bias needed for regulation; lower values allow lower-power biasing networks. |
| Package | SOT-23 (3-pin) | SOT-23 (3-pin) | Package compatibility affects PCB footprint and assembly; identical packages allow drop-in replacement. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range defines the environments where the part remains within specification; matching ranges preserve application coverage. |
| Dynamic Output Impedance | 0.15 Ω (typical) | 0.2 Ω (typical) | Lower dynamic impedance improves load regulation and transient response in shunt-regulator feedback loops. |
| Initial Accuracy Grade | 0.5% | 0.5% | Initial accuracy grade indicates the guaranteed Vref error at 25 °C, which sets the baseline output precision. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AP4313KTR-G1 | AP431ASAG-7 |
|---|---|---|
| Part Status | Active | Obsolete |
| Reference Type | - | Shunt |
| Output Type | - | Adjustable |
| Voltage - Output (Min/Fixed) | - | 2.495V |
| Voltage - Output (Max) | - | 36 V |
| Current - Output | - | 200 mA |
| Tolerance | - | ±0.5% |
| Temperature Coefficient | - | 30ppm/°C |
| Current - Cathode | - | 500 µA |
| Operating Temperature | -40°C ~ 105°C | -20°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Amplifier Type | Current Sense | - |
| Number of Circuits | 1 | - |
| Current - Input Bias | 50 nA | - |
| Supply Current | 600µA | - |
| Current - Output / Channel | 50 mA | - |
| Voltage - Supply Span(Min) | 2.5 V | - |
| Voltage - Supply Span(Max) | 18 V | - |
Frequently asked questions
What are the AP4313KTR-G1 and AP431ASAG-7?
The AP4313KTR-G1 is a precision adjustable shunt regulator from Diodes Incorporated in a SOT-23-3 package, while the AP431ASAG-7 is a precision adjustable shunt regulator from Diodes Incorporated in a SOT-23-3 package with a 1% initial voltage tolerance. Both are three-terminal adjustable shunt regulators used for voltage reference and regulation applications.
What is the output voltage range of these devices?
Both the AP4313KTR-G1 and AP431ASAG-7 are adjustable shunt regulators with a reference voltage of 2.5 V and can be programmed to any output voltage from 2.5 V up to 36 V using an external resistor divider.
What is the difference in voltage tolerance between the AP4313KTR-G1 and AP431ASAG-7?
The AP431ASAG-7 offers a 1% initial voltage tolerance, while the AP4313KTR-G1 provides a 0.5% initial voltage tolerance, making the AP4313KTR-G1 the tighter-tolerance option for applications requiring higher reference accuracy.
Are the AP4313KTR-G1 and AP431ASAG-7 pin-compatible?
Yes, both devices are offered in the SOT-23-3 package with the same pinout (reference, anode, cathode), so they are pin-compatible and share the same PCB land pattern.
What are the key electrical specifications shared by both parts?
Both devices feature a 2.5 V reference voltage, an adjustable output range of 2.5 V to 36 V, a typical dynamic output impedance of 0.15 Ω, and a cathode current range suitable for shunt regulation. They are specified for operation over the industrial temperature range.
Can the AP4313KTR-G1 and AP431ASAG-7 be used interchangeably in a design?
Because both are pin-compatible SOT-23-3 adjustable shunt regulators with the same 2.5 V reference and 2.5 V to 36 V output range, they can generally be interchanged, but the tighter 0.5% tolerance of the AP4313KTR-G1 versus the 1% tolerance of the AP431ASAG-7 should be evaluated against the accuracy requirements of the target design.
What are typical applications for these shunt regulators?
Both the AP4313KTR-G1 and AP431ASAG-7 are typically used as voltage references, in power supply regulation, as error amplifiers in feedback loops, and in adjustable voltage and current regulation circuits in consumer, industrial, and computing equipment.