• There are no items in your cart

BS 448-2:1981

Current

Current

The latest, up-to-date edition.

Dimensions of electronic tubes and valves Specification for dimensions of United Kingdom electronic tubes

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

07-31-1981

US$359.44
Excluding Tax where applicable

Foreword
Cooperating organizations
Dimensions
Section one: General
1. Scope
2. References
3. Definitions
4. Drawings and dimensions
5. Pin (or contact) numbering
6. Pin soldering
7. Resilient pins
8. Tolerances on pin position
9. Gauging
10. Gauges and pin straightening tools
11. Function of spigot and key
Section two: Drawings and dimensions of electronic
tube caps
CT4
CT5
CT6 (screw type)
CT9
CT11 (cavity cap)
Section three: Drawings and dimensions of electronic
tube reference line gauges for CRTs
RL1
Section four: Drawings and dimensions of electronic
tube bases
B2D/1.1 (base)
B3G/1.1 (base)
B3G/2.1 (outline, without top cap)
B4A/1.1 (base)
B4A/1.2 (base pin and wafer slot position gauge)
B4B/1.1 (base)
B5/1.1 (base)
B5/1.2 (base pin position gauge)
B5A/1.1 (base)
B7/1.1 (base)
B7/1.2 (base pin position gauge)
B7D/1.1 (base)
B7G/D/1.1 (base)
B7G/D/1.2 (base pin position gauge)
B7G/F/1.1 (base)
B7G/F/2.1 (tube outline, without top cap)
B8F/1.1 (base)
B8F/1.2 (base pin and spigot position gauge)
B8F/1.5 (base contact ring gauge)
B8F/1.6a (base contact spigot gauge I)
B8F/1.6b (base contact spigot gauge II)
B8-MO/1.1 (Mazda octal base)
B8-MO/1.2 (Mazda octal base pin and spigot position
            gauge)
B9/1.1 (base)
B9/1.2 (base pin position gauge)
B9A/D/1.1 (base)
B9A/D/1.2 (pin and tubulation gauge)
B9A/D/1.3 (pin straightening tool)
B9A/F/1.1 (base)
B9A/F/2.1 (tube outline, without top cap)
B12E/1.1 (base)
B12F/1.1 (base)
B12F/1.2 (base pin position gauge)
B12J/1.1 (base)
B12J/1.2 (base pin position gauge)
B14B/1.1 (base)
B14B/1.2 (base pin position gauge)
B14E/1.1 (base)
B14E/1.2 (pin and tubulation position gauge)
B14E/1.3 (pin straightening tool)
B15B/1.1 (base)
B15B/1.2 (base pin position gauge)
B19A/1.1 (base)
B19A/1.2 (base pin position gauge)
B23A/1.1 (base)
B23A/1.2 (base pin position gauge)
B24A/1.1 (base)
B24A/1.2 (base pin and spigot position gauge)
B26A/1.1 (base)
B26A/1.2 (base pin position gauge)
B26A/1.3 (pin straightening tool)
Appendices
A. United Kingdom coded caps
B. United Kingdom coded reference line gauges
     for CRTs
C. United Kingdom coded bases

Data sheets give drawings and dimensions of bases, caps and associated gauges and pin straightening tools for those electronic tubes registered in the United Kingdom.

Committee
EPL/100
DevelopmentNote
Supersedes BS 448-1(1953), BS 448-2(1953), BS 448-2:Supplement No. 1:1966, BS 448-2:Supplement No. 2:1968, BS 448-2:Supplement No. 3:1971, BS 448-2:Supplement No. 4:1973. Supersedes 79/24466 DC. (06/2004) Reviewed and confirmed by BSI, January 2011. (12/2010)
DocumentType
Standard
Pages
70
PublisherName
British Standards Institution
Status
Current

This Part of this British Standard covers such physical requirements of the bases, caps and outlines of electronic tubes as are necessary to ensure mechanical compatibility and satisfactory electrical contact. Associated gauges and pin straightening tools are also covered. This standard deals only with electronic tubes registered in the United Kingdom and not covered in BS 448-1.

Owing to the many variables involved, including tolerances on pin diameters and permissible pitch circle eccentricity, it is not practical or economical to ensure complete compatibility in isolated cases where many component parts are on extreme opposing limits.

The standard is divided into four sections. Section 1 specifies general requirements for bases and associated gauges and pin straightening tools. Sections 2, 3 and 4 contain data sheets specifying the dimensions of caps, bases, outlines and associated gauges and pin straightening tools.

Appendix A, Appendix B and Appendix C identify which Part of BS 448 deals with which particular component.

BS 4319-1:1968 Methods of measurement of the electrical properties of electronic tubes and valves (excluding microwave devices) Essential conditions for measuring equivalent input and output admittances
BS EN 111000:1993 Harmonized system of quality assessment for electronic components. Generic specification: cathode ray tubes
BS CECC 46001:1977 Specification for harmonized system of quality assessment for electronic components. Blank detail specification: cold cathode indicator tubes
BS E9065:1976 Specification for harmonized system of quality assessment for electronic components. Blank detail specification: small power transmitting tubes of anode dissipation up to 1 kW
BS 9041:1978 Rules for the preparation of detail specifications for gas filled microwave switching tubes of assessed quality: tunable and broadband TR tubes and TR limiters. Full assessment level
BS CECC 45004:1977 Specification for harmonized system of quality assessment for electronic components. Blank detail specification: disc seal power tubes
BS 9054:1971 Rules for the preparation of detail specifications for radar display cathode ray tubes of assessed quality
BS E9063:1976 Specification for harmonized system of quality assessment for electronic components. Blank detail specification: industrial heating triodes
BS 9040:1978 Specification for gas-filled microwave switching tubes of assessed quality: generic data and methods of test
BS CECC 45000:1977 Specification for harmonized system of quality assessment for electronic components: generic specification: space-charge controlled tubes
BS CECC 46000:1978 Harmonized system of quality assessment for electronic components: generic specification: cold cathode indicator tubes

BS 448-1:1981 Dimensions of electronic tubes and valves IEC dimensions
BS 427-1:1961 Method for Vickers hardness test Testing of metals

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.