* Impedance curve (digitized from datasheet)
20.0	7.20	0.00
21.1	7.37	0.00
22.3	7.60	0.00
23.5	7.79	0.00
24.8	8.11	0.00
26.2	8.40	0.00
27.7	8.86	0.00
29.2	9.15	0.00
30.9	9.80	0.00
32.6	10.33	0.00
34.4	11.15	0.00
36.3	12.09	0.00
38.3	13.01	0.00
40.5	14.61	0.00
42.7	16.62	0.00
45.1	19.04	0.00
47.6	21.91	0.00
50.3	24.51	0.00
53.0	27.00	0.00
56.0	28.70	0.00
59.1	26.25	0.00
62.4	21.69	0.00
65.9	19.25	0.00
69.6	17.30	0.00
73.4	15.00	0.00
77.5	13.44	0.00
81.8	12.54	0.00
86.4	11.51	0.00
91.2	10.52	0.00
96.3	9.85	0.00
101.6	9.32	0.00
107.3	8.84	0.00
113.3	8.39	0.00
119.6	7.96	0.00
126.2	7.55	0.00
133.3	7.15	0.00
140.7	6.76	0.00
148.5	6.42	0.00
156.8	6.09	0.00
165.5	5.90	0.00
174.7	5.80	0.00
184.4	5.72	0.00
194.7	5.66	0.00
205.6	5.59	0.00
217.0	5.53	0.00
229.1	5.51	0.00
241.8	5.47	0.00
255.3	5.44	0.00
269.5	5.42	0.00
284.5	5.43	0.00
300.4	5.48	0.00
317.1	5.52	0.00
334.7	5.58	0.00
353.4	5.63	0.00
373.0	5.75	0.00
393.8	5.79	0.00
415.7	5.78	0.00
438.9	5.79	0.00
463.3	5.82	0.00
489.1	5.87	0.00
516.3	5.93	0.00
545.1	5.99	0.00
575.4	6.09	0.00
607.5	6.26	0.00
641.3	6.44	0.00
677.0	6.58	0.00
714.7	6.74	0.00
754.5	6.85	0.00
796.5	6.93	0.00
840.8	7.08	0.00
887.7	7.21	0.00
937.1	7.38	0.00
989.3	7.53	0.00
1044.3	7.72	0.00
1102.5	7.98	0.00
1163.9	8.21	0.00
1228.6	8.51	0.00
1297.1	8.75	0.00
1369.3	8.96	0.00
1445.5	9.08	0.00
1526.0	9.24	0.00
1610.9	9.42	0.00
1700.6	9.71	0.00
1795.3	10.05	0.00
1895.3	10.39	0.00
2000.8	10.67	0.00
2112.2	10.99	0.00
2229.8	11.26	0.00
2353.9	11.49	0.00
2485.0	11.79	0.00
2623.3	12.07	0.00
2769.4	12.35	0.00
2923.6	12.67	0.00
3086.3	13.01	0.00
3258.2	13.38	0.00
3439.6	13.69	0.00
3631.1	14.03	0.00
3833.2	14.39	0.00
4046.6	14.64	0.00
4271.9	14.91	0.00
4509.8	15.28	0.00
4760.9	15.76	0.00
5025.9	16.16	0.00
5305.7	16.80	0.00
5601.1	17.39	0.00
5913.0	17.96	0.00
6242.2	18.58	0.00
6589.7	19.21	0.00
6956.6	19.73	0.00
7343.9	20.07	0.00
7752.8	20.51	0.00
8184.4	20.96	0.00
8640.1	21.54	0.00
9121.1	22.11	0.00
9628.9	22.75	0.00
10165.0	23.41	0.00
10731.0	24.10	0.00
11328.4	24.90	0.00
11959.1	25.84	0.00
12624.9	27.01	0.00
13327.8	28.00	0.00
14069.9	29.38	0.00
14853.2	30.92	0.00
15680.2	32.54	0.00
16553.1	33.90	0.00
17474.7	35.01	0.00
18447.6	36.22	0.00
19474.7	37.53	0.00