INMP401
PCB DESIGN AND LAND PATTERN LAYOUT
The recommended PCB land pattern for the INMP401 should be laid out to a 1:1 ratio to the solder pads on the microphone
package, as shown in Figure 8. Take care to avoid applying solder paste to the sound hole in the PCB. A suggested solder paste
stencil pattern layout is shown in Figure 9. The diameter of the sound hole in the PCB should be larger than the diameter of the
sound port of the microphone. A minimum diameter of 0.5 mm is recommended.
Figure 8. PCB Land Pattern Layout
Dimensions shown in millimeters
Figure 9. Suggested Solder Paste Stencil Pattern Layout
Dimensions shown in millimeters
2.62
ø1.10
ø1.68
ø0.70 (2×)
ø0.90 (3×)
2.40
1.20
2.54
0.79
1.27
1.27mm
1.2mm
2.54mm
2.62mm
3.41mm
2.4mm
0.85mm DIA. (3×)
1.8mm/1.3mm DIA. 0.2032 CUT WIDTH (4×) 0.649mm DIA. (2×)
Page 10 of 14
Document Number: DS-INMP401-00
Revision: 1.1
INMP401
HANDLING INSTRUCTIONS
PICK AND PLACE EQUIPMENT
The MEMS microphone can be handled using standard pick-and-place and chip shooting equipment. Take care to avoid damage to the
MEMS microphone structure as follows:
Use a standard pickup tool to handle the microphone. Because the microphone hole is on the bottom of the package, the
pickup tool can make contact with any part of the lid surface.
Do not pick up the microphone with a vacuum tool that makes contact with the bottom side of the microphone.
Do not pull air out of or blow air into the microphone port.
Do not use excessive force to place the microphone on the PCB.
REFLOW SOLDER
For best results, the soldering profile must be in accordance with the recommendations of the manufacturer of the solder paste used to
attach the MEMS microphone to the PCB. It is recommended that the solder reflow profile not exceed the limit conditions specified
in Figure 1 and Table 3.
BOARD WASH
When washing the PCB, ensure that water does not make contact with the microphone port. Do not use blow-off procedures or
ultrasonic cleaning.
Page 11 of 14
Document Number: DS-INMP401-00
Revision: 1.1
INMP401
OUTLINE DIMENSIONS
Figure 10. 3-Terminal Chip Array Small Outline No-Lead Cavity [LGA_CAV]
4.72 × 3.76 × 1.00 mm Body
Dimensions shown in millimeters
Figure 11. Package Marking Specification (Top View)
3
.
8
6
3
.
7
6
3
.
66
4
.
8
2
4
.
7
2
4
.
6
2
B
O
T
T
O
M
VI
EW
T
O
P V
IEW
S
I
D
E
V
I
EW
0.90 DIA.
(PINS 1, 5, 6)
1
3
2
4
5
6
2.
62
BSC
3
.
30
R
EF
1
.10
D
IA
.
1
.
68
D
IA
.
0
.
25
D
I
A
.
(
THRU
H
OL
E)
0
.
79 B
SC
2
.
5
4
B
SC
1
.
27 B
SC
1
.
10
1
.
00
0.
9
0
0
.
24
R
EF
0
.
73
R
EF
1
.
20
B
SC
2
.
40
B
SC
0
.
68 R
EF
0
.61
REF
0.70 DIA.
(PINS 2, 4)
3
.
1
4
R
EF
4
.
10 R
EF
REFERENCE
CORNER
PIN 1
YYXXXX
4
01
L
O
T TR
A
C
E
ABILITY
C
ODE
PIN 1 INDIC
A
TION
P
A
R
T NUMBER
D
A
TE
C
ODE
Page 12 of 14
Document Number: DS-INMP401-00
Revision: 1.1

INMP401ACEZ-R7

Mfr. #:
Manufacturer:
TDK InvenSense
Description:
MEMS Microphones Omnidirectional Microphone with Bottom Port and Analog Output
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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