microSD™ Card Connectors
DM3 Series
Oct.1.2018 Copyright 2018 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
■
Features
◆
Common to the entire Series
1. Extremely small in size
Small external dimensions and the above-the-board height
make the connectors the smallest on the market.
◆
DM3D (Push -Pull, manual, without
ejection mechanism)
· Partial card insertion hold
Card will not fall-out even when it is not fully inserted. Full
insertion and electrical / mechanical connection is confirmed
with a distinct tactile feel.
2. Reverse card insertion protection
Unique card slot design (patented) protects the connector
from damage when the card is attempted to be inserted in
reverse, allowing it to re-inserted correctly.
· Accessible termination areas
An inner lead system that can be reworked is used in this design.
Contact solder terminations may be inspected and reworked.
3. Effective ground and shield configuration
4-connection points of the metal cover to the printed circuit
board assures secure connection of the ground circuit and
provides EMI protection.
4. Rigid and strong construction
Despite its small size, high-strengths materials used in the
connectors produced a strong and rigid structure.
5. Card detection switch
The card detection switch is Normally Open
Card insertion-ejection
Series
Image
Page
◆
DM3AT and DM3BT (Push - Push, with
ejection mechanism)
· Card fall-out prevention
Built-in card tray and the unique push insertion-push ejection
mechanism (patented) prevent accidental card ejection or fall-
out.
Despite its small size the connectors will eject the card to a
distance of 4.0mm, allowing easy hold and removal of the card.
Push-Push
DM3AT
2~4
· Exposed termination leads
Easy inspection and rework of the solder termination joints.
DM3BT
5~6
◆
DM3CS (Hinge, Push-Pull, manual, without
ejection mechanism)
· Simple and reliable card insertion
Hinged metal cover provides location and guides the card
during the insertion / removal. Closing of the cover confirms
the electrical and mechanical connection with a tactile click
sensation.
Hinge-manual
insertion/
ejection
DM3CS
7~8
· Reliable contact with the card contact pads
Unique contact design and card slide action will clean the
contact areas of the card.
· Accessible termination areas
Contact solder terminations may be inspected and reworked.
Push-Pull
manual insertion/
ejection
DM3D
9~10
2017.1
③
1
DM3 Series●microSD™ Card Connectors
■Product
Specifications (DM3 Series)
Ratings
Item
1. Insulation resistance
2. Withstanding voltage
3. Contact resistance
4. Vibration
Current rating : 0.5A
Voltage rating : 125V AC
Operating temperature range : -25ç to +85ç (Note 1) Operating humidity range : RH 95% max.
Storage temperature range : -40ç to +85ç (Note 2) (No condensation)
Specification
1000Mø min. (Initial value)
No flashover or insulation breakdown
100mø max. (Initial value)
No electrical discontinuity of 100 ns or longer
No damage, cracks or parts dislocation.
Contact resistance : 40mø max. (change from initial value)
Measure at 500V DC
500 V AC / 1 minute
1mA
Conditions
Frequency : 10 to 55Hz, single amplitude of 0.75mm,
3 directions for 2 hours
Oct.1.2018 Copyright 2018 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
5. Humidity
Insulation resistance : 100Mø min.
No damage, cracks or parts dislocation.
Contact resistance : 40mø max. (change from initial value)
96 hours at of 40 ± 2ç, and humidity of 90 to 95%
-55ç
➝
5 to 35ç
➝85ç ➝
5 to 35ç
Times : 30 min.
➝
5 min.
➝
30 min.
➝
5 min.
5 cycles
10,000 cycles, 400 to 600 cycles per hour (DM3AT, DM3B)
5,000 cycles, 400 to 600 cycles per hour (DM3C, DM3D)
Reflow
: At the recommended temperature profile
Manual soldering : 350ç for 3 seconds
6. Temperature cycle
Insulation resistance : 100Mø min.
No damage, cracks or parts dislocation.
7. Durability
8. Resistance to
soldering heat
Contact resistance : 40mø max. (change from initial value)
No deformation of components affecting performance.
Note 1 : Includes temperature rise caused by current flow.
Note 2 : The term "storage" refers to products stored for long period prior to mounting and use.
■Materials
/ Finish
DM3AT, DM3BT
Part
Insulator
Contacts
Material
LCP
Copper alloy
Stainless steel
Copper alloy
Stainless steel
Piano wire
(DM3AT)
(DM3BT)
(DM3AT, DM3BT)
(DM3BT)
Finish
Color : Black
Contact area : Gold plated
Lead area : Gold plated
Lead area : Gold plated
-------------------
Nickel plated
Remarks
UL94V-0
-------------------
Guide cover
-------------------
Other components
-------------------
DM3CS, DM3D
Part
Insulator
Contacts
Material
LCP
Copper alloy
Finish
Color : Black
Contact area : Gold plated
Lead area : Gold plated
------------------- (DM3CS)
Tin plated (DM3D)
Remarks
UL94V-0
-------------------
Guide cover
Stainless steel
-------------------
■Product
Number Structure
Refer to the chart below when determining the product specifications from the product number.
Please select from the product numbers listed in this catalog when placing orders.
DM3
AT
–
SF
– PEJM5
1
2
3
4
3
Termination type : SF Right-angle SMT(Standard)
DSF Right-angle SMT(Reverse)
1
Series name : DM3
2
Connector type
: AT Push-Push (ejection mechanism), Top board mounting (Standard)
BT Push-Push (ejection mechanism), Bottom board mounting (Reverse)
CS Hinge, Push-Pull (no ejection mechanism), Top board mounting (Standard)
D Push-Pull (no ejection mechanism), Top board mounting (Standard)
Number of contacts : 8
4
Card ejection code : PEJM5, PEJS
None
(Push insert/push eject)
: Manual card
insertion/ejection
2
DM3 Series●microSD™ Card Connectors
■DM3AT
Push-Push (ejection mechanism), Top board mounting (Standard)
#5(CLK)
#6(VSS)
#7(DAT0)
#8(DAT1)
#4(VDD)
#3(CMD)
#2(CD/DAT3)
#1(DAT2)
13.85
2
CARD DETECTION
SWITCH(B)
(7.35)
(3.2)
1.68
Oct.1.2018 Copyright 2018 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
Part No.
DM3AT-SF-PEJM5
HRS No.
609-0031-0
2
CARD DETECTION
SWITCH(A)
microSD CARD
(15)
15.95
(16.75):CARD OVER STROKE POSITION
(17.55):CARD LOCK POSITION
(21.55):CARD EJECT POSITION
15.95
(0.8)
(5.5)
C
L
(11)
1
All dimensions : mm
■Recommended
PCB mounting pattern
10MIN
9.25MAX
8.65
7.7
0.7
1.2
0.15MIN
1.55
P=1.1
0.7
1
1.2
2.9±0.15
Note
1
C
indicates the center line of the
L
microSD card slot.
Card detection switch
Without the card Card inserted
Open
Closed
14.05
13.3MIN
9.9
7.9MIN
5.7MAX
3.7
4.4MAX
6MIN
8.9MIN
8.2MIN
2
0.5
3
3
3
14.1MAX
14.5
15.1
(A)
3
(B)
(A)
(B)
1
Ｃ
Ｌ
9.1
0.15
(3.2)
2.8
0.8
1
2.7
3.25
1.9
No conductive traces.
All dimensions : mm
1.3
C
0.
15
3
DM3 Series●microSD™ Card Connectors
BPackaging
Specifications
●
Embossed carrier tape dimensions (1,500 pcs/reel)
UNREELING DIRECTION
20
2
.5
Ø1
P=4
1.75
(3.2)
14.2
Oct.1.2018 Copyright 2018 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
(16.35)
32
28.4
All dimensions : mm
●
Reel Dimensions
TRAILER
32.4
CIRCLE
PORTION EQUIPPED
WITH COMPONENTS
LEADER(400mm MIN)
Ø380
START
END
Ø80
OVAL
EMPTY(160mm MIN)
EMPTY(100mm MIN)
TOP COVER TAPE
EMBOSSED CARRIER TAPE
4
DM3 Series●microSD™ Card Connectors
■DM3BT,
Push-Push (ejection mechanism), Bottom board mounting (Reverse)
#4(VDD)
#3(CMD)
#2(CD/DAT3)
#1(DAT2)
#5(CLK)
#6(VSS)
#7(DAT0)
#8(DAT1)
(3.2)
2.38MAX
1.83
13.85
(6.5)
CARD DETECTION
SWITCH(B)
2.7MAX
6.7MAX
2
3
(21.55):CARD EJECT POSITION
(17.55):CARD LOCK POSITION
(16.75):CARD OVER STROKE POSITION
16.05
15.95
(15)
3
Oct.1.2018 Copyright 2018 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
3
Part No.
DM3BT-DSF-PEJS
HRS No.
609-0029-9
(0.55)
CARD DETECTION
SWITCH(A)
1
15.1
15.45
2
C
L
(11)
microSD CARD
(5.5)
■Recommended
PCB mounting pattern
10MIN
9.25MAX
8.65
7.7
1.9
1.4
1±0.05
P=1.1
0.7
0.2
0.7
0.35MIN
2.9±0.15
All dimensions : mm
Note
1
C
indicates the center line of the
L
microSD card slot.
Card detection switch
Without the card Card inserted
Open
Closed
14.75
14.3
4
1.2
3.5
7.7MIN
9.7
13.3
2
(A)
Ｃ
0.
15
3
(B)
(A)
(B)
1.9
Ｃ
Ｌ
0.5
(3.2)
3.05
8.9
1
Oblique-hatched area is projection
of contact.
No conductive traces.
All dimensions : mm
0.8
3.2
1.5
4
1.2
5
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