Obsolete — sourcing through independent channels
The 1.5KE10A_R2_00001 is listed as Obsolete by Panjit International Inc., meaning the manufacturer no longer produces this part.
Key ratings and what they mean for your circuit
The reverse standoff voltage of 8.55 V means the diode does not conduct at normal operating voltage up to that level, only clamping when the transient exceeds the breakdown voltage (minimum 9.5 V).
Package and board integration
Housed in a DO-201AE axial-lead package, this through-hole part is soldered into a plated through-hole on the PCB — the axial leads handle the surge current without trace lift-off, unlike smaller SMD packages that may delaminate under repeated pulses. The single unidirectional channel protects one rail; for bidirectional or AC-line protection, two devices back-to-back or a dedicated bidirectional TVS would be needed.