Description
Technical Specifications
This diode is optimized for precision voltage regulation and signal clamping where a 24V threshold is required.
| Parameter | Specification |
| Nominal Zener Voltage ($V_Z$) | 24V |
| Power Dissipation ($P_D$) | 0.5W (500mW) |
| Package Type | DO-35 (Small glass axial lead) |
| Tolerance | $\pm 5\%$ |
| Operating Temperature | -65°C to +200°C |
Understanding Zener Diode Operation
In a typical circuit, this 24V Zener diode is placed in reverse bias. When the input voltage exceeds 24V, the diode enters its “breakdown region,” allowing current to flow to ground, thereby “clamping” the voltage at the regulated 24V level to protect sensitive downstream components.
Application Notes for Repair or Replacement
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Component Footprint: The “C24PH” typically comes in a DO-35 glass package. When replacing it, ensure your replacement part matches this form factor to fit the PCB layout.
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Power Limit: At 0.5W, this component is intended for signal-level regulation. If it is being used to protect a high-current load, it may require a series resistor to prevent the diode from exceeding its power rating ($P = V_Z \times I_Z$).
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Verification: If the component has failed, check the surrounding PCB for signs of heat stress. If the diode has shorted, it is often a sign of an upstream overvoltage event or a failed voltage regulator.
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