ANSI-J-STD-004(焊剂的技术要求) 一、 焊剂的分类 1.1 依据焊剂的组成 活性及焊剂类型来分。 表 1 J-STD-004 对助焊剂的分类 焊剂活性水平(卤素含量 )/焊剂类型 FluxActivity Levels(% Halide)/ Flux Type 焊剂(主要)组成材料 Flux Materials of Composition Rosin (RO) 焊剂标识(代号) Flux Designator Low...
Key words flux standard choice and use 助焊剂是电子工业中最重要的辅助材料之一，它在电子装配工艺中影响电子产品质量与可靠性。随着现代信息电子工业的迅猛发展，助焊剂的用量越来越大，对其质量的要求也越来越高。因此，如何更好地选用适合的助焊剂，做到既满足产品质量与可靠性的要求又不造成浪费就显得十分...
The classified methods and requirements of American national joint industry standard J-STD-004 were introduced in this article simply, and a comparison between J-STD-004 and other flux standard has been taken too. Meanwhile, basic means and principles of Choosing and using fluxes have been present...
IPC J-STD-004C EN 2022 Requirements for Soldering Fluxes 所属分类:白皮书 上传者:zhoubin333 文档大小:1251 K 标签:IPC 所需积分:0分积分不够怎么办? 文档介绍:IPC J-STD-004C EN 2022 Requirements for Soldering Fluxes 现在下载 VIP会员,AET专家下载不扣分;重复下载不扣分,本人上传资源不扣分。
软焊通量要求 Solder flux requirements 预览IPC J-STD-004B前三页 标准号 IPC J-STD-004B 总页数 32页 发布单位 美国电子电路和电子互连行业协会 购买 正式版 其他标准 IPC J-STD-004B CHINESE 助焊剂要求 IPC J-STD-004B相似标准 EJ/T 503-1990 三十万千瓦压水堆核电厂 反应堆堆内构件设计和制造技术...
Purpose The purpose of this standard is to classify and characterize Sn-Pb and Pb-free soldering flux materials for use in electronic metallurgical interconnections for printed circuit board assembly. Soldering flux materials include the following: liquid fl … ...
J-STD-004 was updated about five years ago, but the comingling of designations from the old (A) and new (B) revisions in industry literature has created much confusion among users. What changed, what didn't, how does it affect flux selection criteria, and what does a user need to kno...
MIL MIL-F-14256F-1993由美国国防部标准化文件(含MIL标准) US-DOD 发布于 1993-04-26。 MIL MIL-F-14256F-1993 助焊剂 焊接 液体 糊状助焊剂 焊膏和焊膏助焊剂 (电子/电气用) 通用规范(S/S 符合 ANSI/J-STD-004-1995-1995、ANSI/J-STD-005-1995-1995、ANSI/J-STD-006-1995-1995)(取代 MIL-F-...
4) Ask about the classification standard.The revised standard has been in force for roughly 5 years. If a flux formulation is over 5 years old, it was l ikely classified under the previous system; if it is less than 5 years old it was l ikely classified under the current system. Some...
Solvay 索尔维 NOCOLOK Flux Drystatic助焊剂 l15 有铅助焊剂 上海凯茵化工有限公司 3年 查看详情 ￥1200.00/千克 辽宁大连 美国kester助焊剂NF372-TB 赫尔纳贸易(大连)有限公司 4年 查看详情 ￥50.00/瓶 山东济宁 实验试剂 二溴丁二酸 250g/瓶 526-78-3 环保型助焊剂 标准品 环保型 济宁棠邑化工有限...