B2A
2-pin

B2B
2-pin

B2G
2-pin

B3A / Pee-Wee
3-pin

B3G / Mazda subminiature / European special all-glass miniature
3- pin (+ top)

H3A / European 3-pin / British 3-pin / Eu-3
3-pin

A4A / B4 / British 4-pin / A4 / European 4-pin
4-pin

B4B / UV4 / WD-4-Pin
4-pin

U4A / UX4 / American 4-pin base (with or without bayonet pin)
4-pin

U5A / B5C / UY5 / UX5 / US 5-contact / American Small 5-pin / USS5
5-pin

O5A / B5 / British 5-pin / European 5-pin / Europa
5-pin

E5-65 / Nuvistor
5-pin

U6A / UX6 / US 6-pin
6-pin

B7A / Septar
7-pin

B7G / Miniature 7-Pin / Miniature, Button / Mi-7
7-pin

M7A / B7 / British 7-pin
7-pin

U7A / UX7 / US 7-pin small
7-pin

B8A / Rimlock / European 8-pin Miniature base / Ri-8
8-pin

B8G / B8B / Loctal / 8-pin Loktal / Lo-8 / Locking Octal
8-pin

K8A / Octal / IO / International Octal / A08 / American octal base / Oc-8
8-pin

K8B / Mazda Octal / MO8 / Octal-8 GB / MO
8-pin

P8A / Transcontinental / P-Type / Ct8 / Philips 8 / Side-contact 8
8-pin

B9A / Noval Miniature 9-pin / American Small Button / Button 9-pin
9-pin

B9D / Magnoval
9-pin

B9E / Novar / 9-pin compactron
9-pin

B9G / Loctal-9pin / 9-pin Loctal / Lo-9
9-pin

B10B / B10C / Decal / Dekal
10-pin

B10G / Decar / Dekar
10-pin

Y10A / G10A
10-pin

B11A / Sub-Magnal / Magnal / B11
11-pin

B12A / DuoDecal / Duodekal / B12
12-pin

B12C / Duodecar / 12-Pin-Compactron / E12-70 / E12-74
12-pin

B12K / Nuvistor / Twelvar E7-83 / E12-64 / E12-65
12-pin