DIMM Socket For Memory Expansion
Conforming To JEDEC Standard DMM Series, 168 Contacts
Workstations, Computers, Disk arrays and Servers
FEATURE
●
Applicable to 168-position module per JEDEC
standard MO-161
●
Board locks which prevent the connector from
lifting during reflow soldering
●
Voltage keying design for both 5V and 3.3V
modules
●
Available with locking ejector on either side or
both sides of connector
●
Insulator molded from surface mount compatible
plastic
●
Accepts DRAM, SDRAM and non-standard
DRAM module
●
Straight plug in design minimizes bending of
module
●
Low insertion force
DRAM Type
Voltage
P/N
DMM-168FLDA1-3A113
DMM-168FLDA1-3A133
DMM-168FLDA2-3A113
DMM-168FLDA2-3A133
DMM-168FLDA2-3A134
DMM-168FLDA2-3A13N
DMM-168FLDA2-3A135
DMM-168FLDA2-3B133
DMM-168FLDA2-3B137
DMM-168FLDA2-3B13N
DMM-168FLDA1-2A213
DMM-168FLDA2-2A213
DMM-168FLDA3-2A213
DMM-168FLDA4-2A213
DMM-168FLHB1-3A114
DMM-168FLHB1-3A134
DMM-168FLHB2-3A114
DMM-168FLHB2-3A133
DMM-168FLHB2-3A134
DMM-168FLEA1-3A113
DMM-168FLEA1-3A133
DMM-168FLEA1-3A13N
DMM-168FLEA1-3A163
DMM-168FLEA2-3A113
DMM-168FLEA2-3A117
DMM-168FLEA2-3A133
DMM-168FLEA2-3A134
DMM-168FLEA2-3A137
DMM-168FLEA2-3A163
DMM-168FLEA3-3A117
DMM-168FLEA3-3A137
DMM-168FLFB1-3A116
DMM-168FLFB1-3A136
DMM-168FLFB2-2B214
DMM-168FLFB2-3A111
DMM-168FLFB2-3A116
DMM-168FLFB2-3A132
DMM-168FLFB2-3A133
DMM-168FLFB2-3A136
DMM-168FLAA1-1A233
DMM-168FLAA1-3A113
DMM-168FLAA1-3A133
DMM-168FLAA2-2A213
DMM-168FLAA2-2A233
DMM-168FLAA2-2A236
DMM-168FLAA2-2B212
DMM-168FLAA2-2B232
DMM-168FLAA2-2B233
DMM-168FLAA2-2B262
DMM-168FLAA2-2B263
DMM-168FLAA2-3A113
DMM-168FLAA2-3A116
DMM-168FLAA2-3A133
DMM-168FLAA2-3A136
DMM-168FLAA2-3A166
DMM-168FLAA2-3A13N
DMM-168FLAA2-3B112
DMM-168FLAA2-3B133
DMM-168FLAA2-3B13N
DMM-168FLAA2-3B162
DMM-168FLAA2-3A137
DMM-168FLAA2-3A163
DMM-168FLAA2-3A134
DMM-168FLAA3-1A233
DMM-168FLAA3-1A234
DMM-168FLAA3-3A113
DMM-168FLAA3-3A133
DMM-168FLAA3-3A136
DMM-168FLAA3-3A13N
DMM-168FLAA3-1B212
DMM-168FLAA4-3A113
DMM-168FLAA4-3A133
DMM-168FLGB1-3A112
DMM-168FLGB1-3A132
DMM-168FLGB2-3A112
DMM-168FLGB2-3A132
SPECIFICATION
Voltage rating
Current rating
Dielectric withstanding voltage
Insulation resistance
Contact resistance
250V AC (rms)
0.5A/contact
500V AC (rms) for 1 minute
500MΩ min. at 500V DC
40mΩmax.
3.3V
Sync. DRAM
Ｈ
DMM(168)
5.0V
MATERIAL/FINISH
Contact/Finish
Insulator
Ejector
Board lock
Lock
Copper alloy/Gold over Nickel plating (mating),
Tin-lead plating (tail)
Polyamide resin (UL94V-O)/Black
Stainless steel
Copper alloy/Solder plating
Polyamide resin (UL94V-O)/Black
Standard DRAM
3.3V
5.0V
3.3V
Non-Standard DRAM
5.0V
1
●
●
DMM Series (168 Contacts)
Unit : mm
■ Sync. DRAM Operation Voltage 3.3V
DMM-168FLDA2-3A23N
Housing/Lock color
1 : Ivory/Ivory
2 : Black/Black
3 : Black/Ivory
4 : Ivory/Ivory
Board lock and hole size
N : without Board lock
3 : with 3 Board locks, φ2.50
4 : with 4 Board locks, φ2.50
5 : with 1 Board locks, φ2.03
7 : with 3 Board locks, φ2.03
holes
holes
holes
holes
Tail Pitch
2 : 1.27mm
3 : 1.905mm
Tail Pitch Arrangement
A : See page 3
B : See page 3
Contact plating
1 : Mating area½½½0.3μm Gold over Nickel
Tail area½½½Tin-Lead
3 : (Standard)
Mating area½½½Gold flash over Nickel
Tail area½½½Tin-Lead
Tail Length
1 : 3.0mm
2 : 3.2mm
44.18
A
168
DDK
THALAND
85
Contact No.168
Ｈ
7.30
1
DRAM
3.3V
84
DMM(168)
Contact No.1
A
11.43 6.35
29×1.27＝36.83
6.35
147.00
128.35
43×1.27＝54.61
22.38
C1
L
11.40 MAX.
11.43
φ2.50
Lock pin
17.78
29×1.27＝36.83
43.18
60.96
141.00
B
43×1.27＝54.61
φ2.50
Lock pin
60.96
φ2.50
Lock pin
（0.82）
Contact No.1
Contact No.1
5.80
3.50
0.25
P
(Tail pitch)
(See P/N)
L
(Tail length)
(See P/N)
6.60
1.27
1.27
P×3
DETAIL B-1
DMM-168FL □□□ - □ A □□□
DETAIL B-2
DMM-168FL □□□ - □ B □□□
SEC.A-A
2
●
●
DMM Series (168 Contacts)
Unit : mm
■ Sync. DRAM Operation Voltage 3.3V
■
Mating board dimensions
133.35
± 0.13
（127.35）
C1
L
4.00
± 0.1
Device mounting area
4 MAX.REF.
after device mouting
17.78
± 0.05
38.23 MAX.
3
DETAIL H
3 MIN.
11.43
± 0.05
3.175 REF.
DETAIL G
6.35
± 0.05
DETAIL F
6.35
± 0.05
DETAIL J
2φ3.00
± 0.1
1.27 REF.
36.83
44.18
± 0.1
63.675
115.57 REF.
131.35
± 0.05
54.61
± 0.05
Mating board dimensions
(Reference)
4.00 MIN.
R1
2.54
0.25 MAX.
R1
1.00
C
1.00
L 1
3.12
Ｈ
DMM(168)
2.00
3.12
30
.0°
± 0.1
2.00
± 0.1
3.3V DC 1.27
± 0.03
1.00
± 0.05
1.27
± 0.1
DETAIL G
DETAIL F
DETAIL J
DETAIL H
■
PCB mounting hole dimensions
4φ2.50
± 0.05
168-φ0.8
± 0.05
60.96
± 0.10
Contact No.85
Contact No.168
60.96
± 0.10
0.25
C
L
C
L
3 × P
± 0.05
P
± 0.05
1.27
± 0.05
43.18
± 0.05
6.35
± 0.05
36.83
± 0.05
11.43
± 0.05
3.175
6.35
± 0.05
57.79
± 0.05
Contact No.1
54.61
± 0.05
115.57
± 0.10
Lock pin
DMM-168FLDA □ - □ A □□□
168-φ0.8
± 0.05
PCB mounting hole dimensions
(connector mounting side Reference)
Contact No.168
4φ2.50
± 0.05
60.96
± 0.10
60.96
± 0.10
Contact No.85
3 × P
± 0.05
P
± 0.05
1.27
± 0.05
43.18
± 0.05
6.35
± 0.05
36.83
± 0.05
11.43
± 0.05
3.175
6.35
± 0.05
57.79
± 0.05
Contact No.1
Lock pin
54.61
± 0.05
115.57
± 0.10
DMM-168FLDA □ - □ B □□□
PCB mounting hole dimensions
(connector mounting side Reference)
3
●
●
DMM Series (168 Contacts)
Unit : mm
■ Sync. DRAM Operation Voltage 5.0V
DMM-168FLHB2-3A134
Housing/Lock color
1 : Ivory/Ivory
2 : Black/Black
Board lock and hole size
N : without Board lock
3 : with 3 Board locks, φ2.50 holes
4 : with 4 Board locks, φ2.50 holes
Contact plating
1 : Mating area½½½0.3μm Gold over Nickel
Tail area½½½Tin-Lead
3 : (Standard)
Mating area½½½Gold flash over Nickel
Tail area½½½Tin-Lead
43.18
A
168
DDK
THALAND
85
Contact No.168
1
DRAM
3.3V
84
Contact No.1
A
11.43 6.35
29×1.27＝36.83
6.35
147.00
128.35
43×1.27＝54.61
7.30
Ｈ
DMM(168)
22.38
C1
L
11.40 MAX.
11.43
φ2.50
Lock pin
17.78
29×1.27＝36.83
43.18
60.96
141.00
B
43×1.27＝54.61
φ2.50
Lock pin
60.96
φ2.50
Lock pin
（0.82）
Contact No.1
Contact No.1
5.80
0.25
1.905
1.905×3
3.00
3.50
6.60
1.27
1.27
DETAIL B-1
DMM-168FL □□□ - □ A □□□
DETAIL B-2
DMM-168FL □□□ - □ B □□□
SEC.A-A
4
●
●
DMM Series (168 Contacts)
Unit : mm
■ Sync. DRAM Operation Voltage 5.0V
■
Recommended mating board dimensions
133.35
± 0.13
（127.35）
C1
L
4.00
± 0.1
Device mounting area
4 MAX.REF.
after device mouting
17.78
± 0.05
38.23 MAX.
DETAIL H
3
3 MIN.
11.43
± 0.05
3.175 REF.
DETAIL G
6.35
± 0.05
DETAIL F
6.35
± 0.05
DETAIL J
2φ3.00
± 0.1
1.27 REF.
36.83
43.18
± 0.1
63.675
115.57 REF.
131.35
± 0.05
54.61
± 0.05
Recommended mating board dimensions
(Reference)
0.25 MAX.
Ｈ
DMM(168)
R1
1.00
1.00
C1
L
R1
2.54
4.00 MIN.
3.12
3.12
30
.0
°
2.00
± 0.1
2.00
± 0.1
5.0V DC
1.27
± 0.03
1.00
± 0.05
1.27
± 0.1
DETAIL G
DETAIL F
DETAIL J
DETAIL H
■
Recommended PCB mounting hole dimensions
4φ2.50
± 0.05
168-φ0.8
± 0.05
60.96
± 0.10
Contact No.85
Contact No.168
60.96
± 0.10
0.25
C
L
3 × P
± 0.05
P
± 0.05
1.27
± 0.05
43.18
± 0.05
6.35
± 0.05
3.175
6.35
± 0.05
57.79
± 0.05
Contact No.1
36.83
± 0.05
11.43
± 0.05
115.57
± 0.10
54.61
± 0.05
Lock pin
DMM-168FLHB □ - □ A □□□
Recommended PCB mounting hole dimensions
(connector mounting side Reference)
5
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