TM500 system/Repairs
To repair or calibrate TM500 plug-ins, a plug-in extender is often required.
Some options include:
- The original Tektronix 067-0645-02 flexible plug-in extender
- Using a TM503B mainframe that allows easy separation of the power supply/backplane unit from the case (s.b.), or a TM501 in a similar way
- Using the power module part of the TM515 that is easily removed from the case (two thumbscrews)
- Modifying readily available "JAMMA" game console cable extenders (s.b.) – this approach also works for 5000-series scopes
- Custom PCB with card-edge connector
Pictures
-
Original Tektronix 067-0645-02 flexible extender
-
TM503B power section used for TM500 module maintenance
-
TM515 power module removed from case
-
JAMMA cable harness modified for use as TM500 extender
-
Modified JAMMA cable - contact pad and key slot cuts
-
Modified JAMMA cable - key added to connector (piece of 0.5 mm PCB)
Pass Transistors
This table is imported from a document compiled by Jerry Scheltgen and Dennis Tillman with updates from Jared Cabot.
| Tek Part No | Type | Manufacturer ref | IC | BVCEO | PWR | hFE @ IC | Vsat @ IC | Ft min. | Case | Used in |
|---|---|---|---|---|---|---|---|---|---|---|
| 151-0140-00 | NPN | 2N3055H | 15 A | 60 V | 115 W | 20 @ 4 A | 1.1 V | 0.3 MHz | TO-3 | TM504 (Hi), TM506 (Hi), TM5006 (Hi) |
| 151-0258-00 | PNP | 2N4905 | 15 A | 60 V | 87 W | 25-100 @ 2.5 A | 1.0 V @ 2.5 A | 4.0 MHz | TO-3 | TM504 (Hi), TM506 (Hi), TM5006 (Hi) |
| 151-0349-00 | NPN | MJE2801 | 10 A | 60 V | 90 W | 25 @ 3 A | 1.1 V | 2.0 MHz | TO-127 | TM501, TM501A, TM503 |
| 151-0373-00 | PNP | MJE2901, SJE925 | 10 A | 60 V | 90 W | 25 @ 3 A | 1.1 V | 2.0 MHz | TO-127 | TM501, TM501A, TM502A, TM503, TM503A, TM504, TM506, TM515, TM5003, TM5006 |
| 151-0413-00 | NPN | 2N6258 | 30 A | 80 V | 250 W | 20-60 @ 15 A | 0.75 V @ 15 A | 0.8 MHz | TO-3 | TM504 (Hi) |
| 151-0436-00 | PNP | MJE2801, SJE966 | 10 A | 85 V | 90 W | 25 @ 3 A | 1.1 V | 2.0 MHz | TO-127 | TM502A, TM503A, TM504, TM506, TM515, TM5003, TM5006 |
| 151-0652-00 | NPN | TIP35C | 25 A | 100 V | 125 W | 25-75 @ 1.5 A | <1.8 V @ 15 A | 3.0 MHz | TO-218 | TM504A (Hi), TM506A (Hi), TM5006A (Hi) |
| 151-0651-00 | PNP | TIP36C | 25 A | 100 V | 125 W | 25-50 @ 1.5 A | <1.8 V @ 15 A | 3.0 MHz | TO-218 | TM504A (Hi), TM506A (Hi), TM5006A (Hi) |
| 151-0917-00 | NPN | ~TIP35B? | 15 A | 80 V | ? | ? | ? | ? | ? | TM506A |
| 151-0918-00 | PNP | ~TIP36B? | 15 A | 80 V | ? | ? | ? | ? | ? | TM506A |
| 151-0937-00 | NPN | MJF3055 | 10 A | 90 V | 30 W | 20-100 @ 4 A | 1.0 V @ 4 A | 2.0 MHz | TO-220 | TM502A, TM503B, TM504A, TM5003, TM5006A |
| 151-0938-00 | PNP | MJF2955 | 10 A | 90 V | 30 W | 20-100 @ 4 A | 1.0 V @ 4 A | 2.0 MHz | TO-220 | TM502A, TM503A, TM503B, TM504A, TM5003, TM5006A |