Micrel MCP7940M-I/SN

Package / Case

Axial

Mounting Type

Surface Mount

Supplier Device Package

Axial

Package

Tape & Reel (TR)

Base Product Number

RWR81

Mfr

Vishay Dale

Product Status

Active

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other Names

MCP7940MISN

Operating Temperature

The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.

-55°C ~ 250°C

Series

Military, MIL-PRF-39007, RWR81N

Packaging

Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

Tube

Size / Dimension

0.085 Dia x 0.250 L (2.16mm x 6.35mm)

Tolerance

±1%

Moisture Sensitivity Level (MSL)

1 (Unlimited)

Number of Terminations

2

Temperature Coefficient

The resistance-change factor per degree Celsius of temperature change is called the temperature coefficient of resistance. This factor is represented by the Greek lower-case letter “alpha” (α). A positive coefficient for a material means that its resistance increases with an increase in temperature.

±20ppm/°C

Type

Clock/Calendar

Resistance

42.2 Ohms

Composition

Wirewound

Power (Watts)

1W

Voltage - Supply

1.8 V ~ 5.5 V

Base Part Number

MCP7940M

Failure Rate

the frequency with which an engineered system or component fails, expressed in failures per unit of time. It is usually denoted by the Greek letter λ (lambda) and is often used in reliability engineering.

R (0.01%)

Interface

I²C, 2-Wire Serial

Memory Size

The memory capacity is the amount of data a device can store at any given time in its memory.

64B

Time Format

Time is based on a 24 hour system. This is frequently referred to as "military time". The 24 hour system is the default format.

HH:MM:SS (12/24 hr)

Date Format

The international standard recommends writing the date as year, then month, then the day:?YYYY-MM-DD.

YY-MM-DD-dd

Current - Timekeeping (Max)

1µA @ 5.5V

Voltage - Supply, Battery

-

Features

Military, Moisture Resistant, Non-Inductive

Height Seated (Max)

-