Failed ICs and components

Mon Feb 16 03:42:07 CST 2015

I made an inventory of the defective TTL’s I have, other than I initially though there is a reasonable spread over types and brands.

Other than the NS DM7400 there are no types with an extensive failure rate.

The list talks for itself.

-Rik

Type

HP Number 1820-

Quantity

Brand

CER

Date

7495AN

	1

Siemens

	7417

8H08/74H08

	1

??

	PCF7427

93L00PC

	1

		7302

9N03/7403

	1

Fairchild

	7328

DM7400N

	14

National Semiconductor

	352,422,424,401,351,435,315,215

DM7403N

	4

National Semiconductor

	315

DM7404N

	5

National Semiconductor

	317,315

DM7408N

	2

National Semiconductor

	307

DM7410N

	2

National Semiconductor

	308,217

DM74121N

	6

National Semiconductor

	313,315,314

DM74195N

	1

National Semiconductor

	241

DM7420N

	1

National Semiconductor

	211

DM7432N

	2

National Semiconductor

	314,413

DM7474N

	5

National Semiconductor

	435,349

DM7493N

	1

Texas Instruments

	7252

DM7495N

	2

National Semiconductor

	242,241

DM74H00N

	1

National Semiconductor

	334

DM74H08N

	1

National Semiconductor

	229

DM74L00N

	1

National Semiconductor

	337

DM74L04N

	3

National Semiconductor

	313,351

DM74L10N

	1

National Semiconductor

	423

DM74L74N

	1

National Semiconductor

	316

DM74L86N

	1

National Semiconductor

	317

DM74LS373N

	1

National Semiconductor

	8005

N8885A

	1

Signetics

	7402

N8T20N

1048

1

Signetics

	7915

SN7400J

	1

Texas Instruments

	7313

SN7400N

	2

Texas Instruments

	7405,7335

SN7402N

	1

Texas Instruments

	AS7419

SN7404N

	3

Texas Instruments

	7344,7402,AS7406

SN7406N

0471

1

Texas Instruments

	8044S

SN7407N

0668

2

Texas Instruments

	H7845,AS7414

SN74107N

	2

Texas Instruments

	7945B,7414

SN74121J

	1

Texas Instruments

X

7326

SN74123N

0579

4

Texas Instruments

	7406,8014

SN74155N

	2

Texas Instruments

	7222

SN7416N

	1

Texas Instruments

	AHA741

SN74191N

	1

Texas Instruments

	M7628

SN74193N

	3

Texas Instruments

	FF7606,FF7536

SN74193N

	1

Texas Instruments

	7516

SN7451N

	1

Texas Instruments

	7427

SN7474N

	1

Texas Instruments

	7339

SN7475N

	1

Texas Instruments

	7349

SN7493AN

	1

Texas Instruments

	7235

SN7493AN

	1

Texas Instruments

	AS7344

SN7495AN

	4

Texas Instruments

	BS7402,7227,7244

SN7495N

	1

Texas Instruments

	7401

SN7496N

	1

Texas Instruments

	M7331

SN74H00N

	1

Texas Instruments

	7135

SN74H01N

	1

Texas Instruments

	BS7423

SN74H01N

	1

Texas Instruments

	7252

SN74H04N

	2

Texas Instruments

	7527,AS7406

SN74H101N

	2

Texas Instruments

	7217,7336

SN74H108N

	1

Texas Instruments

	7205

SN74H40N

	1

Texas Instruments

	7510

SN74H74N

0512

1

Texas Instruments

	7419

SN74L04N

	2

National Semiconductor

	218,313

SN74L42N

	1

Texas Instruments

	7312A

SN74LS00N

	1

Texas Instruments

	M7523

SN74LS03N

	3

Texas Instruments

	7945

SN74LS08N

1201

1

Texas Instruments

	7801

SN74LS244N

	1

Texas Instruments

	8432B

SN74LS257AN

1438

1

Texas Instruments

	7927B

SN74S04N

	1

Texas Instruments

	UK7949

SN74S374N

	2

Texas Instruments

	M7919X,F9022X

7400

0054

1

Motorola

	7315

7410

0068

2

Motorola

	7245,7443

7473

0075

1

National Semiconductor

	217

7474

0077

2

National Semiconductor

	212

74H08

0141

6

National Semiconductor

	228,217,604,229,228

MC3001

0141

1

Motorola

	7326

7404

0174

1

National Semiconductor

	543

7405

0175

1

National Semiconductor

	037M

7405

0175

1

National Semiconductor

	947

MC3003 /  74H32

0205

1

Motorola

	7513

74121

0261

1

Texas Instruments

	7410

74121

0261

1

National Semiconductor

	425

7403

0269

4

National Semiconductor

	345,428

CA3028A

0306

1

National Semiconductor

	413

7402

0328

2

National Semiconductor

	527,532

7402

0328

1

Motorola

	7248

74H00

0370

1

Motorola

	7413

74H00

0370

1

Fairchild

	7237

74H40

0376

1

Motorola

	7334

74H04

0424

1

National Semiconductor

	231

7408

0511

6

Fairchild

	F7421,F7407,F7409,F7428

7413

0537

1

National Semiconductor

	533

74L00

0583

1

National Semiconductor

	521

74L02

0584

3

National Semiconductor

	222,231

74L10

0587

1

National Semiconductor

	514

74L30

0589

1

National Semiconductor

	232

74L54

0591

1

National Semiconductor

	521

74L74

0596

1

Fairchild

X

SL3459

74L86

0598

3

National Semiconductor

	405

9322PC

0616

1

Fairchild

	352

9322PC

0616

1

Fairchild

X

7221

9324PC

0706

1

Fairchild

	7735

9328PC

0741

2

Fairchild

X

7240,7309

74C175

1562

2

Signetics

	L147,B104

74C175

1562

1

National Semiconductor

	011

-----Oorspronkelijk bericht-----
Van: "Kyle Owen" < <mailto:kylevowen at gmail.com> kylevowen at gmail.com>
Verzonden: ‎11-‎2-‎2015 23:57
Aan: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
Onderwerp: Failed ICs and components

I am writing my master's thesis on accelerated life testing and would like
to get a collection of parts to decap and experiment on. What prompted my
study is a failed 7474 dual flip-flop in a PDP-8/E. As I later read (on
here, I believe) was that the 7474s seem to fail in higher number than
other 7400-series ICs. Is this because of a design flaw? I'm not sure
(yet), but would like to find out.

More recently, I saw a 680k 2W carbon resistor that read 1.3 meg out of
circuit. As it turns out, it was in a high voltage portion of the circuit,
and I suspect that electromigration caused its failure over time. Many of
you are probably already aware that carbon resistors tend to increase in
value as they age, though there are a few explanations too for that
behavior, as I understand it.

I would like to tie all of this together by researching older accelerated
life testing schemes, examine how those parts actually fared, and see how
current day models might be improved.

If anyone has a collection of dead ICs (preferably those that have died
inexplicably, and not by extreme overvoltage, for instance), I would like
to talk to you about getting a few. If they are 7474s from Texas
Instruments, ca. early 1970s, even better!

Thanks in advance,

Kyle