netbox/netbox/templates/dcim/device_component.html

{% extends 'generic/object.html' %}
{% load helpers %}
{% load perms %}
{% load plugins %}

{% block breadcrumbs %}
  {{ block.super }}
  <li class="breadcrumb-item"><a href="{% url object|viewname:'list' %}?device_id={{ object.device.pk }}">{{ object.device }}</a></li>
{% endblock %}