All dimensions in mm

LRMAP3920

Type

L

±1.00

M

±1.00

N

+0.30/

-0.10

W

+0.30/

-0.05

E

±0.10

F

+0.10

D0

+0.10/

-0.0

D1

+0.10/

-0.0

P0

±0.10

P1

±0.10

P2

±0.10

P0x10

±0.20

t

+0.15/

-0.10

A0

+0.15/

-0.10

B0

±0.13

K0

±0.10

(B)-R001

(B)-R0007

(C)-R002

330

21.4

2.0

16.00

1.75

7.50

1.50

1.50

4.00

8.00

2.00

40.00

0.30

5.55

10.47

1.25

All remaining

values

2.20

B’

D0

P2

P0

B

P1

5°

5°

A0

SECTION A - A’

D1

SECTION B - B’

K0

B0

A

A’

Measurement

Processing

Packaging

Low Resistance Metal Alloy

Power Resistors

LRMAP3920

Make Possible

12.15

General Note

TT Electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

© TT Electronics plc

www.ttelectronicsresistors.com

Resistance testing for the LRMAP3920 is performed on the underside of the copper contacts using the following method.

LRMAP3920 series resistors are suitable for IR reflow soldering. The recommended reflow profile for Pb-free soldering, for example using SAC387 alloy (Sn

95.5%, Ag 3.8%, Cu 0.7%), is as follows:

Pre-heat: 30s to 45s at 180°C

Soldering: 20s to 40s at 250°C

Peak: 260°C

LRMAP3920 resistors are packed in 16mm plastic tape, 3000 pieces per reel.

Measurement current

≥1.5mΩ: 1A

<1.5mΩ: 3A

Probe spacing along component length

8.80mm

Probe spacing across component width

2.44mm

Probe tip diameter

≤0.5mm

M

N

L

t