| 331921 | BT139-800E | Triacs sensitive gate | Philips |
| 331922 | BT139-800F | Triacs | Philips |
| 331923 | BT139-800G | 4Q Triac | NXP Semiconductors |
| 331924 | BT139-800G | Triacs | Philips |
| 331925 | BT139-800H | Triacs high noise immunity | Philips |
| 331926 | BT139B | Triacs | Philips |
| 331927 | BT139B | Triacs sensitive gate | Philips |
| 331928 | BT139B | Triacs high noise immunity | Philips |
| 331929 | BT139B-500 | Triacs | Philips |
| 331930 | BT139B-500E | Triacs sensitive gate | Philips |
| 331931 | BT139B-500F | Triacs | Philips |
| 331932 | BT139B-500G | Triacs | Philips |
| 331933 | BT139B-500H | Triacs high noise immunity | Philips |
| 331934 | BT139B-600 | 4Q Triac | NXP Semiconductors |
| 331935 | BT139B-600 | Triacs | Philips |
| 331936 | BT139B-600E | Triacs sensitive gate | Philips |
| 331937 | BT139B-600F | Triacs | Philips |
| 331938 | BT139B-600G | Triacs | Philips |
| 331939 | BT139B-600H | Triacs high noise immunity | Philips |
|
| 331940 | BT139B-800 | Triacs | Philips |
| 331941 | BT139B-800E | Triacs sensitive gate | Philips |
| 331942 | BT139B-800F | Triacs | Philips |
| 331943 | BT139B-800G | Triacs | Philips |
| 331944 | BT139B-800H | Triacs high noise immunity | Philips |
| 331945 | BT139F | Triacs | Philips |
| 331946 | BT139F | 600V Vdrm 16A Triac, 1.6V Peak On-State Voltage, 2.0mA Repetitive Peak Off-State Current | SemiWell Semiconductor |
| 331947 | BT139F-500 | Triacs | Philips |
| 331948 | BT139F-500F | Triacs | Philips |
| 331949 | BT139F-500G | Triacs | Philips |
| 331950 | BT139F-600 | Triacs | Philips |
| 331951 | BT139F-600F | Triacs | Philips |
| 331952 | BT139F-600G | Triacs | Philips |
| 331953 | BT139F-800 | Triacs | Philips |
| 331954 | BT139F-800F | Triacs | Philips |
| 331955 | BT139F-800G | Triacs | Philips |
| 331956 | BT139X | Triacs sensitive gate | Philips |
| 331957 | BT139X | Triacs | Philips |
| 331958 | BT139X-500 | Triacs | Philips |
| 331959 | BT139X-500E | Triacs sensitive gate | Philips |
| 331960 | BT139X-500F | Triacs | Philips |
