LM4051-N: Spice model issue

Part Number: LM4051-N

Tool/software:

Good day, colleagues,

My customer is using the SPICE model for LM4051_A1P2 in a simulation and need your attention on this topic:

There’s an issue with the order of the pins in this model. If I use the default pin order, P N, the model is generating unexpected results. But if I switch the pin order to N P, it works fine.

I haven’t seen this happen with other Zener reference models.

I’ve attached some snapshots below for your reference.

1. Simulation results with matching pin-order (P N) -

2. Simulation results with reversed pin-order (N P) -

Thank you,

Daria