助焊剂可分成高腐蚀性...中腐蚀性...和无腐蚀性的，可是，任何的助焊剂种类中都有不同级别的腐蚀性
助焊剂分类是基于其活性和成分(它决定活性)。而助焊剂活性又是其除去表面污物有效性的指标。助焊剂通常分成无机酸、有机酸(OA)、天然松香与人造松香(免洗)。J-STD-004按字母从A到Y的顺序分类助焊剂(表一)。
表一、基于材料成分和卤化物含量的助焊剂分类
|
助焊剂类型符号
|
助焊剂成分材料
|
符号
|
助焊剂活性水平(%卤化物)
|
助焊剂类型
|
|
A
|
Rosin
|
RO
|
Low(0%)
|
L0
|
|
B
|
Rosin
|
RO
|
Low(<0.5%)
|
L1
|
|
C
|
Rosin
|
RO
|
Moderate(0%)
|
M0
|
|
D
|
Rosin
|
RO
|
Moderate(0.5%~2.0%)
|
M1
|
|
E
|
Rosin
|
RO
|
High(0%)
|
H0
|
|
F
|
Rosin
|
RO
|
High(>2.0%)
|
H1
|
|
G
|
Resin
|
RE
|
Low(0%)
|
L0
|
|
H
|
Resin
|
RE
|
Low(<0.5%)
|
L1
|
|
I
|
Resin
|
RE
|
Moderate(0%)
|
M0
|
|
J
|
Resin
|
RE
|
Moderate(0.5~2.0%)
|
M1
|
|
K
|
Resin
|
RE
|
High(0%)
|
H0
|
|
L
|
Resin
|
RE
|
High(>2.0%)
|
H1
|
|
M
|
Organic
|
OA
|
Low(0%)
|
L0
|
|
N
|
Organic
|
OA
|
Low(<0.5%)
|
L1
|
|
P
|
Organic
|
OA
|
Moderate(0%)
|
M0
|
|
Q
|
Organic
|
OA
|
Moderate(0.5~2.0%)
|
M1
|
|
R
|
Organic
|
OA
|
High(0%)
|
H0
|
|
S
|
Organic
|
OA
|
High(>2.0%)
|
H1
|
|
T
|
Inorganic
|
IN
|
Low(0%)
|
L0
|
|
U
|
Inorganic
|
IN
|
Low(<0.5%)
|
L1
|
|
V
|
Inorganic
|
IN
|
Moderate(0%)
|
M0
|
|
W
|
Inorganic
|
IN
|
Moderate(0.5~2.0%)
|
M1
|
|
X
|
Inorganic
|
IN
|
High(0%)
|
H0
|
|
Y
|
Inorganic
|
IN
|
High(>2.0%)
|
H1
|