IPC NC-349-1985

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IPC-NC-349

Computer Numerical

Control Formatting for

Drillers and Routers

IPC-NC-349

Original Publication

August 1985

The Institute for

Interconnecting

and Packaging

Electronic Circuits

A standard developed by the Institute for Interconnecting

and Packaging Electronic Circuits

2215 Sanders Road

Northbrook, Illinois

60062-6135

Tel

Fax

URL:

847 509.9700

847 509.9798

http://www.ipc.org

Standardization In May 1995 the IPC’s Technical Activities Executive Committee adopted Prin-

ciples of Standardization as a guiding principle of IPC’s standardization efforts.

Standards Should:

• Show relationship to DFM & DFE

• Minimize time to market

• Contain simple (simpliﬁed) language

• Just include spec information

• Focus on end product performance

• Include a feed back system on use and problems for future improvement

Standards Should Not:

• Inhibit innovation

• Increase time-to-market

• Keep people out

• Increase cycle time

• Tell you how to make something

• Contain anything that cannot be defended with data

Notice IPC Standards and Publications are designed to serve the public interest through

eliminating misunderstandings between manufacturers and purchasers, facilitat-

ing interchangeability and improvement of products, and assisting the pur-

chaser in selecting and obtaining with minimum delay the proper product for

his particular need. Existence of such Standards and Publications shall not

in any respect preclude any member or nonmember of IPC from manufacturing

or selling products not conforming to such Standards and Publication, nor

shall the existence of such Standards and Publications preclude their voluntary

use by those other than IPC members, whether the standard is to be used

either domestically or internationally.

Recommended Standards and Publications are adopted by IPC without regard to

whether their adoption may involve patents on articles, materials, or processes.

By such action, IPC does not assume any liability to any patent owner, nor

do they assume any obligation whatever to parties adopting the Recommended

Standard or Publication. Users are also wholly responsible for protecting

themselves against all claims of liabilities for patent infringement.

The material in this standard was developed by the CNC Machine Standards

Subcommittee of the Computer-Aided Technology Committee of the Institute

for Interconnecting and Packaging Electronic Circuits.

United States of America.

No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission

of the publisher. 1996

IPC-NC-349

Computer Numerical

Control Formatting for

Drillers and Routers

Developed by the CNC Machine Standards Subcommittee of

the Computer-Aided Technology Committee of the Institute for

Interconnecting and Packaging Electronic Circuits.

Userss of this standard are encouraged to participate in the

development of future revisions.

Contact:

IPC

2215 Sanders Road

Northbrook, Illinois

60062-6135

Tel 847 509.9700

Fax 847 509.9798

NSTITUTE FOR

NTERCONNECTING

AND

ACKAGING

LECTRONIC

IRCUITS

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摘要：

IPC NC-349-1985 是国际电子工业联接协会（IPC）于1985年发布的一项关于印制电路板（PCB）阻焊膜（Solder Mask）的标准规范。该标准主要定义了用于PCB表面的液态及干膜型阻焊材料的性能要求、涂覆工艺规范及质量检验方法，旨在确保阻焊层在焊接过程中有效保护线路、防止桥连并提供可靠的绝缘性。对于从事PCB设计、制造与质量控制的工程师而言，IPC NC-349-1985是早期阻焊工艺的重要参考文件，其技术内容为后续如IPC-SM-840等现代标准奠定了基础。了解该标准有助于追

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IPC NC-349-1985

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