| PartNumber | LM431AIMX | LM431AIZ | LM431AIMX/NOPB |
| Description | Voltage References Shunt Regulator 2.5V Programmable | Voltage References Shunt Regulator 2.5V Programmable | Voltage References 2%, 1%, or 0.5% Accuracy Adjustable Precision Zener Shunt Regulator 8-SOIC -40 to 85 |
| Manufacturer | ON Semiconductor | ON Semiconductor | Texas Instruments |
| Product Category | Voltage References | Voltage References | Voltage References |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | Through Hole | SMD/SMT |
| Package / Case | SOP-8 | TO-92-3 | SOIC-8 |
| Reference Type | Shunt Adjustable References | Shunt Adjustable References | Shunt Adjustable References |
| Output Voltage | Adjustable | Adjustable | 2.495 V to 37 V |
| Initial Accuracy | 2 % | 2 % | 2 % |
| Temperature Coefficient | 50 PPM / C | 50 PPM / C | 97 PPM / C |
| Series VREF Input Voltage Max | 37 V | 37 V | 37 V |
| Shunt Current Max | 100 mA | 100 mA | 100 mA |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Series | LM431A | LM431A | LM431 |
| Packaging | Reel | Bulk | Reel |
| Description/Function | Program Shunt Reg | Program Shunt Reg | ADJUSTABLE PRECISION ZENER SHUNT REGULATOR |
| Height | 1.55 mm | 4.58 mm | 1.45 mm |
| Length | 5.13 mm | 4.58 mm | 4.9 mm |
| Product | Voltage References | Voltage References | Voltage References |
| Width | 3.95 mm | 3.86 mm | 3.9 mm |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | Texas Instruments |
| Shunt Current Min | 1 mA | 1 mA | 1 mA |
| Topology | Shunt References | Shunt References | Shunt References |
| Maximum Output Voltage | 36 V | 36 V | 36 V |
| Product Type | Voltage References | Voltage References | Voltage References |
| Factory Pack Quantity | 3000 | 10000 | 2500 |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | PMIC - Power Management ICs |
| Unit Weight | 0.008127 oz | 0.006314 oz | 0.005044 oz |
| Operating Temperature Range | - | - | - 40 C to + 85 C |