15CTQ045

Diode Arrays Overview

The SMCJ45CA/TR13 is a bidirectional transient voltage suppressor (TVS) diode in the SMCJ series, designed for industrial surge protection. It features a peak pulse power of 1500W at 10/1000μs and a reverse standoff voltage (Vrwm) of 45V. The breakdown voltage ranges from 50.0V to 55.3V, with a maximum clamping voltage of 72.7V at 20.6A peak pulse current. Housed in the SMC (DO-214AB) surface-mount package, it offers low inductance and supports 260°C reflow soldering, making it suitable for protecting sensitive circuits against lightning surges and ESD in RS485/RS232 interfaces and AC/DC power supplies.

Diode Arrays Feature Summary

• Bidirectional design absorbs both positive and negative voltage transients
• High peak pulse power handling capability of 1500W
• Low inductance structure for rapid response to fast transients
• Industrial-grade thermal stability supporting high-temperature reflow soldering

Diode Arrays Applications

• Surge protection for RS485 and RS232 communication buses
• Transient suppression in AC/DC switching power supplies
• Protection of sensitive microcontroller units (MCUs) and interface transceivers
• Industrial control system input/output line shielding

Diode Arrays Procurement Notes

Verify that the ordered component matches the exact part number SMCJ45CA/TR13, including the specific manufacturer designation, as generic SMCJ45CA labels may originate from various producers with differing quality standards. Confirm the presence of the TR13 tape-and-reel suffix if automated placement equipment is used. Ensure documentation confirms compliance with industrial temperature ranges and RoHS directives before integration into safety-critical designs.

Diode Arrays Selection Notes

Select this device when circuit operating voltage is 24V or 36V and robust 1500W surge immunity is required. The 45V standoff voltage ensures minimal leakage during normal operation while providing adequate margin for voltage spikes. The SMC package is preferred over smaller SMA/SMB packages when board space permits, due to superior heat dissipation capabilities necessary for handling high-energy transients without thermal failure.

Diode Arrays Part Context

This component belongs to the SMCJ series of surface-mount TVS diodes, widely recognized for balancing compact footprint with high power handling. The SMCJ45CA variant specifically targets mid-voltage industrial applications where bidirectional protection is essential. Its standardized DO-214AB outline facilitates easy replacement in existing layouts designed for similar voltage ratings within the same product family.

Diode Arrays Replacement Considerations

Direct substitutes must match the 1500W rating, 45V Vrwm, and bidirectional configuration. Verify pinout compatibility and thermal resistance characteristics. Generic equivalents may vary in clamping voltage precision; ensure any replacement maintains a Vc below the downstream component's absolute maximum rating.