SILICON EPITAXIAL

PLANAR DIODE

1N4148D2A / 1N4148D2B

Semelab Limited

Semelab Limited

Semelab Limited

Semelab Limited

Coventry Road, Lutterworth, Leicestershire, LE17 4JB

Telephone +44 (0) 1455 556565

Fax +44 (0) 1455 552612

Document Number 8271

Issue 2

Page 4 of 4

SCREENING OPTIONS

Space Level (JQRS/ESA) and High Reliability options are

the from the TT electronics Semelab web site.

ESA Quality Level Products are based on the testing

procedures specified in the generic ESCC 5000 and in the

corresponding part detail specifications.

Semelabs QR216 and QR217 processing specifications

(JQRS), in conjunction with the companies ISO 9001:2000

approval present a viable alternative to the American MIL-

PRF-19500 space level processing.

QR217 (Space Level Quality Conformance) is based on the

quality conformance inspection requirements of MIL-PRF-

19500 groups A (table V), B (table VIa), C (table VII) and

also ESA / ESCC 5000 (chart F4) lot validation tests.

QR216 (Space Level Screening) is based on the screening

requirements of MIL-PRF-19500 (table IV) and also ESA

/ESCC 5000 (chart F3).

JQRS parts are processed to the device data sheet and

screened to QR216 with conformance testing to Q217

groups A and B in accordance with MIL-STD-750 methods

and procedures.

Additional conformance options are available, for example

Pre-Cap Visual Inspection, Buy-Off Visit or Data Packs.

These are chargeable and must be specified at the order

stage

(See

Ordering

Information).

Minimum

order

quantities may apply.

Alternative or additional customer specific conformance or

screening requirements would be considered. Contact

Semelab sales with enquires.

MARKING DETAILS

Parts can be laser marked with approximately 7 characters

on two lines and always includes cathode identification.

Typical marking would include part or specification number,

week of seal or serial number subject to available space and

legibility.

Customer specific marking requirements can be arranged at

the time of order.

Example Marking:

ORDERING INFORMATION

Part numbers are built up from Type, Package Variant, and

screening level. The part numbers are extended to include

the additional options as shown below.

Type – Main Part Number

Package Variant – See Mechanical Data

Screening Level – See Screening Options (ESA / JQRS)

Additional Options:

Customer Pre-Cap Visual Inspection

.CVP

Customer Buy-Off visit

.CVB

Data Pack

.DA

Solderability Samples

.SS

Scanning Electron Microscopy

.SEM

Radiography (X-ray)

.XRAY

Total Dose Radiation Test

.RAD

MIL-PRF-19500 (QR217)

Group B charge

.GRPB

Group B destructive mechanical samples

.GBDM (12 pieces)

Group C charge

.GRPC

Group C destructive electrical samples

.GCDE (12 pieces)

Group C destructive mechanical samples

.GCDM (6 pieces)

ESA/ESCC

Lot Validation Testing (subgroup 1) charge

.LVT1

LVT1 destructive samples (environmental)

.L1DE (15 pieces)

LVT1 destructive samples (mechanical)

.L1DM (15 pieces)

Lot Validation Testing (subgroup 2) charge

.LVT2

LVT2 endurance samples (electrical)

.L2D (15 pieces)

Lot Validation Testing (subgroup 3) charge

.LVT3

LVT3 destructive samples (mechanical)

.L3D (5 pieces)

Additional Option Notes:

1) All ‘Additional Options’ are chargeable and must be specified at order stage.

2) When Group B,C or LVT is required, additional electrical and mechanical destructive

samples must be ordered

3) All destructive samples are marked the same as other production parts unless

otherwise requested.

Example ordering information:

The following example is for the 1N4148 part with package

variant A, JQRS screening, additional Group C conformance

testing and a Data pack.

Part Numbers:

Customers with any specific requirements (e.g. marking or

screening) may be supplied with a similar alternative part

number (there is maximum 20 character limit to part

numbers). Contact Semelab sales with enquiries