| 331721 | BT137-800F | Triacs | Philips |
| 331722 | BT137-800G | Triacs | Philips |
| 331723 | BT137B | Triacs logic level | Philips |
| 331724 | BT137B | Triacs sensitive gate | Philips |
| 331725 | BT137B | Triacs | Philips |
| 331726 | BT137B-500 | Triacs | Philips |
| 331727 | BT137B-500D | Triacs logic level | Philips |
| 331728 | BT137B-500E | Triacs sensitive gate | Philips |
| 331729 | BT137B-500F | Triacs | Philips |
| 331730 | BT137B-500G | Triacs | Philips |
| 331731 | BT137B-600 | Triacs | Philips |
| 331732 | BT137B-600D | Triacs logic level | Philips |
| 331733 | BT137B-600E | Triacs sensitive gate | Philips |
| 331734 | BT137B-600F | Triacs | Philips |
| 331735 | BT137B-600G | Triacs | Philips |
| 331736 | BT137B-800 | Triacs | Philips |
| 331737 | BT137B-800E | Triacs sensitive gate | Philips |
| 331738 | BT137B-800F | Triacs | Philips |
| 331739 | BT137B-800G | 4Q Triac | NXP Semiconductors |
|
| 331740 | BT137B-800G | Triacs | Philips |
| 331741 | BT137F | Triacs | Philips |
| 331742 | BT137F | 600V Vdrm 8A Triac, 1.6V Peak On-State Voltage, 1.0mA Repetitive Peak Off-State Current | SemiWell Semiconductor |
| 331743 | BT137F-500 | Triacs | Philips |
| 331744 | BT137F-500D | Thyristor Product Catalog | Teccor Electronics |
| 331745 | BT137F-500E | 500 V, triac sensitive gate | Philips |
| 331746 | BT137F-500E | Thyristor Product Catalog | Teccor Electronics |
| 331747 | BT137F-500F | Triacs | Philips |
| 331748 | BT137F-500G | Triacs | Philips |
| 331749 | BT137F-600 | Triacs | Philips |
| 331750 | BT137F-600D | Thyristor Product Catalog | Teccor Electronics |
| 331751 | BT137F-600E | 600 V, triac sensitive gate | Philips |
| 331752 | BT137F-600E | Thyristor Product Catalog | Teccor Electronics |
| 331753 | BT137F-600F | Triacs | Philips |
| 331754 | BT137F-600G | Triacs | Philips |
| 331755 | BT137F-800 | Triacs | Philips |
| 331756 | BT137F-800E | 800 V, triac sensitive gate | Philips |
| 331757 | BT137F-800F | Triacs | Philips |
| 331758 | BT137F-800G | Triacs | Philips |
| 331759 | BT137M | Triacs logic level | Philips |
| 331760 | BT137M | Triacs | Philips |
