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| PartNumber | LM431AIZ | LM431AIZ/LFT1 | LM431AIZNOPB |
| Description | Voltage References Shunt Regulator 2.5V Programmable | Voltage References Adjustable Precision Zener Shunt Regulat | |
| Manufacturer | ON Semiconductor | Texas Instruments | - |
| Product Category | Voltage References | Voltage References | - |
| RoHS | Y | N | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | TO-92-3 | TO-92-3 | - |
| Reference Type | Shunt Adjustable References | Shunt Adjustable References | - |
| Output Voltage | Adjustable | 2.495 V to 37 V | - |
| Initial Accuracy | 2 % | 2 % | - |
| Temperature Coefficient | 50 PPM / C | 97 PPM / C | - |
| Series VREF Input Voltage Max | 37 V | 37 V | - |
| Shunt Current Max | 100 mA | 100 mA | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Series | LM431A | LM431 | - |
| Packaging | Bulk | Reel | - |
| Description/Function | Program Shunt Reg | ADJUSTABLE PRECISION ZENER SHUNT REGULATOR | - |
| Height | 4.58 mm | 5.2 mm | - |
| Length | 4.58 mm | 5.2 mm | - |
| Product | Voltage References | Voltage References | - |
| Width | 3.86 mm | 4.19 mm | - |
| Brand | ON Semiconductor / Fairchild | Texas Instruments | - |
| Shunt Current Min | 1 mA | - | - |
| Topology | Shunt References | Shunt References | - |
| Maximum Output Voltage | 36 V | 36 V | - |
| Product Type | Voltage References | Voltage References | - |
| Factory Pack Quantity | 10000 | 2000 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Unit Weight | 0.006314 oz | 0.016000 oz | - |
| Operating Temperature Range | - | - 40 C to + 85 C | - |