Low Resistance

Metal Alloy Resistor

LRMA Series

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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

09. 11

Low Resistance Metal Alloy Resistor

LRMA Series

Paper Tape

Bottom Tape

Packaging

Size Tape

A

B

W

F

E

t

ΦA

ΦB ΦC

Wr

Tr

±0.15

3.6

±0.2

8.0

±0.2

3.5

±0.05

1.75

±0.1

4.0

±0.1

2.0

±0.05

4.0

±0.1

1.5

+0.1/-0

0.84

±0.1

±1

±0.2

4.5

±0.2

12

±0.2

5.5

±0.1

1.75

±0.1

4.0

+-0.1

2.0

±0.2

4.0

±0.1

1.55

±0.05

1.1

±0.1

±2

±0.2

6.9

±0.2

12

±0.2

5.5

±0.05

1.75

±0.1

4.0

±0.1

2.0

±0.05

4.0

±0.05

1.5

+0.1/-0

0.85

±0.15

±2

Storage

Conditions: 5°C to 35°C and 40% to 75%RH

Shelf life: 2 years from manufacture

Processing

LRMA series resistors are suitable for both wave and IR reflow soldering. The recommended reflow profile for Pb-

free SAC305 alloy (Sn 96.5%, Ag 3%, Cu 0.5%) soldering is as follows:

Pre-heat: 60s to 120s at 150°C to 180°C

Soldering: 20s to 40s at ≥230°C

Peak: 5s at 250°C to 255°C

Ordering Procedure

Example: LRMA low thermal EMF version in 2512 size and at 10 milliohms and 1% tolerance packed in tape.

L R M A M 2 5 1 2 – R 0 1 F T 4

Type

Version

T

P

M

N

Size

Value (use IEC62 code)

Tolerance (use IEC62 code)

F

1%

J

5%

Packing

T5

1206

5000/reel

T4

Tape

0815, 2512

4000/reel

Standard

General Note

08/10

Welwyn Components reserves the right to make changes in product specification without notice or liability

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

Telephone: +44 (0) 1670 822181 • Facsimile: +44 (0) 1670 829465 • Email: info@welwyn-tt.com • Website: www.welwyn-tt.com

ΦC ΦB ΦA

Tr

Wr