Ordering Information

Industrial Temperature Range (−40˚C to + 85˚C)

Initial Output Voltage Accuracy at 25˚C

And Temperature Coefficient

LM4121 Supplied as

1000 Units, Tape and

Reel

LM4121 Supplied as

3000 Units, Tape and

Reel

Top

Marking

0.2%, 50 ppm/˚C max (A grade)

LM4121AIM5-1.2

LM4121AIM5X-1.2

R19A

LM4121AIM5-ADJ

LM4121AIM5X-ADJ

R20A

0.5%, 50 ppm/˚C max

LM4121IM5-1.2

LM4121IM5X-1.2

R19B

LM4121IM5-ADJ

LM4121IM5X-ADJ

R20B

SOT-23 Package Marking Information

Only four fields of marking are possible on the SOT-23’s small surface. This

table gives the meaning of the four fields.

Field Information

First Field:

R = Reference

Second and third Field:

19 = 1.250V Voltage Option

20 = Adjustable

Fourth Field:

A-B = Initial Reference Voltage Tolerance

www.national.com

2