TL431A vs TL431BCDBZR Comparison
Detailed side-by-side comparison of TL431A by Texas Instruments and TL431BCDBZR by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | TL431A | TL431BCDBZR |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | Voltage Regulators | Voltage Regulators |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.08 | $0.04 |
| Topology | Adjustable shunt regulator / programmable reference | — |
| Reference Voltage (Vref) | 2.495 V typical | — |
| Initial Tolerance (25C) | 1% (A grade) | — |
| Adjustable Output Range | 2.5 V to 36 V | — |
| Minimum Cathode Current for Regulation | 1 mA | 1 mA (typ) |
| Maximum Cathode Current | 100 mA | — |
| Output Impedance | 0.2 ohm typical | — |
| Maximum Input Voltage (cathode) | 36 V | — |
| Turn-on Characteristics | Sharp, active output circuitry | — |
| Temperature Stability | Specified over automotive, commercial, and military temperature ranges | — |
| Package | SOT-23 (DBZ), 3-pin | SOT-23-3 (DBZ) |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Terminals | 3 | — |
| Replacement For | Zener diodes with improved performance | — |
| RoHS Status | Compliant | Compliant |
| Available Grades | B (0.5%), A (1%), standard (2%) | — |
| Companion Device | TL432 (same specs, different pinout on DBV/DBZ/PK) | — |
| Reference Voltage (VREF) | — | 2.495 V |
| Initial Reference Tolerance | — | ±0.5% (B grade, at 25°C) |
| Adjustable Output Voltage Range | — | 2.495 V to 36 V |
| Maximum Cathode Voltage | — | 36 V |
| Cathode Current Range | — | 1 mA to 100 mA |
| Typical Output Impedance | — | 0.2 Ω |
| Dynamic Impedance (typ) | — | 0.05 Ω (1 mA to 100 mA) |
| Temperature Coefficient (typ) | — | Approximately 92 ppm/°C |
| Operating Temperature Range | — | 0°C to +70°C (C grade) |
| Architecture | — | Shunt regulator with bandgap error amplifier |
| Family Grades Available | — | 0.5% (B), 1% (A), 2% (standard) |
| Lifecycle Status | — | Active |