0771 T Transistor, Three Lead Moulded Package, NSD771 Stock, NOS
- 3 photos
Never used. The original pack has been opened, or the quantity was split off a full reel or tube. Leads are original and unclipped.
New old stock, open stock on the grading scaleSend the quantity you need. You get a quote back with shipping before anything is charged.
Video
Filmed on the bench. Sound is stripped from product clips.
- 0:14
Specifications
| Specification | Value |
|---|---|
| Identification | |
| Part number | 0771 T |
| Manufacturer | Not recorded |
| Condition | New old stock, open stock |
| Date code | Not recorded |
| Package | Three lead black moulded package |
| Country of origin | Not recorded |
| Family | NSD771 and SD775 stock group |
| Stock number | DDFDWTF7 |
| Overview | |
| Case marking | 0771 T |
| Inventory label | NSD771 and SD775, from the bag it arrived in |
| Manufacturer | Unmarked. See the description |
| Construction | |
| Package | Three lead black moulded |
| Condition | |
| Leads | Full length, intact |
| On the shelf | Two |
| Condition | New old stock, open stock. Never installed, never soldered |
| Testing | Sold untested. Ask and the exact piece going in the envelope is metered first |
About this part
This one comes with an honest complication, so here it is first. The device is marked 0771 T. The inventory it arrived in was labelled NSD771 and SD775, which are the numbers the previous owner filed it under. Whether 0771 T is a house number, a date and lot code, or an abbreviation of the NSD771 on the bag is not something we can prove from the object, so the title quotes what is on the part and the paperwork is described rather than promoted into a specification.
What can be said without qualification: it is a three lead semiconductor in a black moulded package, the leads are intact and full length, and it has never been fitted to anything. Two are on the shelf.
Buy this if you are chasing a specific device and the markings match what you are chasing, or if you collect early moulded package semiconductors and want a documented example with its original stock context. Do not buy it as a drop in replacement for a datasheet part on the strength of the bag label. Verify the pinout and the electrical behaviour on a tester before it goes anywhere near a working circuit, and ask us for extra photographs of any marking before you order if that will settle it.
Questions about this part
Is this actually an NSD771?
We cannot prove it. The part says 0771 T and the bag said NSD771 and SD775. Those may be the same device under a house number, or the bag may simply be where somebody filed it decades ago. We quote both and let you decide, because a title that resolved the ambiguity for you would be a guess dressed as a fact.
What should I check before fitting one?
The pinout and the basic behaviour, on a component tester or a curve tracer, before it sees a supply rail. That is good practice for any unverified old semiconductor and it is essential here, because the identification is not settled.
Can I see better photographs of the markings?
Yes. Ask before ordering and we will photograph any face under magnification and read out what is legible. If that settles the identification for you it settles it for the listing too, and we will correct the description.
How does this differ from the 0770 R you also list?
Different marking, different piece, same inventory group and the same open question about identification. They are listed separately with separate counts. Nothing about one confirms anything about the other.