Bidirectional TVS for 36.8 V rails
The 1.5KE43CA R0G: It clamps at 59.3 V max and handles 26 A peak pulse current, making it a fit for protecting 36.8 V nominal DC rails against transients like load dump or inductive kickback. The bidirectional channel means it clamps both polarities with a single device — useful on AC-coupled lines or where the fault polarity isn't known ahead of time.
Parametric envelope and temperature range
Breakdown voltage starts at 40.9 V min, with a reverse standoff of 36.8 V — the device begins conducting above that level and clamps the transient before it reaches the protected circuitry. The 59.3 V clamping voltage is the maximum the load sees during a 26 A pulse. The 1500 W rating is derated above 25°C per the standard power-temperature curve; at 175°C the peak pulse power drops to near zero, so the thermal margin at the application's ambient must be checked. No power line protection is offered — this is a general-purpose transient suppressor, not a dedicated AC mains protector. It is suited for DC bus, signal line, and low-voltage supply rail clamping where bidirectional response is needed.
Active production and sourcing posture
The base product number is 1.5KE43, and the R0G suffix indicates Tape & Reel packaging. The DO-201AA axial package is a common through-hole form factor, so rework and replacement on existing boards is straightforward with a soldering iron.