| Vf | If | Type | Vp | Vs | Vg | Ip | Is | Rp | AF | TC | Rl | PW | Bulb | Source | ||
| 64 64A |
Replace with 36 - When heaters are connected in parallel. | ALLIED1952 | ||||||||||||||
| 64 | H | 6.3 | 0.4 | 4S | 180 | 90 | -3 | 3.1 | NJ7P | |||||||
| 65 65A |
Replace with 39/44 - When heaters are connected in parallel. | ALLIED1952 | ||||||||||||||
| 65 | H | 6.3 | 0.4 | 5R | 180 | 90 | -3 | 4.5 | NJ7P | |||||||
| 67 67A |
Replace with 37 - When heaters are connected in parallel. | ALLIED1952 | ||||||||||||||
| 67 | H | 6.3 | 0.4 | 180 | -13.5 | 9.2 | NJ7P | |||||||||
| 68 68A |
Replace with 38 - When heaters are connected in parallel. | ALLIED1952 | ||||||||||||||
| 68 | H | 6.3 | 0.4 | 135 | 90 | -13.5 | 14 | NJ7P | ||||||||