All vacuum tubes "L"
- LTT
- LT-AS
- LPZ-RB-150-B
- LTT
- LFMB-16/25
- LTO-1.0T-187N-5
- LTKN
- LFMB-20/100
- LFEB-20/25
- LTHS
- LT-A
- LFO-2.5T-250N
- LTO-1.0T-187N-8
- LT427
- LSP-1/4-C
- LT-CS
- LTD
- LPZ-LD
- LTS
- LT1LX
- LFEB-14/25
- LT1X
- LTDD
- LTB
- L26CV
- LTC
- LFMB-10/25
- LTS
- LOM-51T-250
- LT-B
- LTBX
- LT1SLX
- LTAA60SK1407
- LTL
- LTHX
- LTO-1.0T-250N
- LT-D
- LTSMT03
- LFEB-16/25
- LFMB-14/100
- LFMSB-20/25
- LT-1
- LTO-1.0T-110N-5
- LTF
- LT-K
- LTA
- LTHS
- LPZ-SD
- LTAA
- LTO-2.5T-250N
- LN-250
- LFMB-20/25
- LFMB-16/100
- LSP-1/4-D
- LTC
- LS751
- LPZ-RG-150-B