## Electronic Specifications: P6002ABL SIDACtor® The **P6002ABL** is a bidirectional Thyristor Surge Protector (SIDACtor®) manufactured by Littelfuse. It is designed to protect sensitive telecommunications equipment from transient voltages caused by lightning, inductive load switching, and AC power fault conditions. --- ### 1. Key Technical Specifications The "P6002ABL" part number follows a specific coding convention that defines its electrical behavior. | Parameter | Symbol | Value | Units | | :--- | :--- | :--- | :--- | | **Peak Off-State Voltage** | $V_{DRM}$ | 550 | Volts | | **Switching Voltage** | $V_S$ | 700 | Volts | | **Holding Current** | $I_H$ | 150 | mA (min) | | **Switching Current** | $I_S$ | 800 | mA (max) | | **Peak Pulse Current** | $I_{PP}$ (8/20µs) | 250 | Amps | | **Capacitance** | $C_O$ | 30 - 45 | pF | --- ### 2. Physical and Packaging Data The device is built to be robust for surface-mount applications. * **Package Type:** Modified TO-220 (Two-leaded). * **Lead Finish:** Matte Tin (100% Sn). * **Case Material:** Epoxy meets UL 94 V-0 flammability rating. * **Polarity:** Bidirectional (functions the same in both positive and negative directions). --- ### 3. Functional Principle The P6002ABL operates as a **crowbar device**. Its function can be broken down into three stages: 1. **Off-State:** Below the $V_{DRM}$, the device remains in a high-impedance state, appearing invisible to the circuit. 2. **Switching:** Once a transient pulse exceeds the switching voltage ($V_S$), the device "snaps" into a low-impedance state. 3. **Crowbarring:** The device shunts the surge current to ground. It remains in this state until the current falls below the holding current ($I_H$), at which point it resets to the high-impedance off-state. --- ### 4. Common Applications Due to its high voltage rating and low capacitance, it is primarily used in: * **T1/E1 Line Protection:** Protecting digital carrier systems. * **Central Office Equipment:** Switching and transmission hardware. * **Customer Premise Equipment (CPE):** Modems, routers, and phone systems. * **Data Lines:** High-speed interfaces where signal integrity must be maintained. ---