Q2–1/8

PNP Silicon Surface Mount Transistor with

Monolithic Bias Resistor Network

This new series of digital transistors is designed to replace a single device and its

external resistor bias network. The BRT (Bias Resistor Transistor) contains a single

transistor with a monolithic bias network consisting of two resistors; a series base

resistor and a base-emitter resistor.The BRT eliminates these individual components

by integrating them into a single device. The use of a BRT can reduce both system

cost and board space. The device is housed in the SOT-23 package which is

designed for low power surface mount applications.

∗ Simplifies Circuit Design

∗ Reduces Board Space

∗ Reduces Component Count

∗ The SOT-23 package can be soldered using wave or

reflow. The modified gull-winged leads absorb thermal

stress during soldering eliminating the possibility of

damage to the die.

∗ Available in 8 mm embossed tape and reel. Use the

Device Number to order the 7 inch/3000 unit reel.

Replace “T1” with “T3” in the Device Number to order

the 13 inch/10,000 unit reel.

MMUN2211RLT1

MMUN2212RLT1

MMUN2213RLT1

MMUN2214RLT1

MMUN2215RLT1

MMUN2230RLT1

MMUN2231RLT1

MMUN2232RLT1

MMUN2233RL34

CASE

318–08, STYLE 6

SOT– 23 (TO–236AB)

NPN SILICON

BIAS RESISTOR

TRANSISTOR

Bias Resistor Transistor

5°C unless otherwise noted)

Rating

Symbol

Value

Unit

Collector-Base Voltage

50

Vdc

Collector-Emitter Voltage

50

Vdc

Collector Current

100

mAdc

200

mW

Derate above 2

5°C

1.6

mW

/°C

THERMAL CHARACTERISTICS

Rating

Symbol

Value

Unit

Thermal Resistance — Junction-to-Ambient (surface mounted)

625

°C/W

Operating and Storage Temperature Range

–65 to +150

°C

Maximum Temperature for Soldering Purposes

260

°C

Time in Solder Bath

10

Sec

DEVICE MARKING AND RESISTOR VALUES

Device

Marking

R1 (K)

R2 (K)

MMUN2211RLT1

A8A

10

10

MMUN2212RLT1

A8B

22

22

MMUN2213RLT1

A8C

47

47

MMUN2214RLT1

A8D

10

47

A8E

10

A8F

4.7

A8G

1

1

A8H

2.2

2.2

A8J

4.7

4.7

A8K

4.7

47

A8L

22

47

1. Device mounted on a FR-4 glass epoxy printed circuit board using the minimum recommended footprint.

2. New devices. Updated curves to follow in subsequent data sheets.

R1

R2

PIN3

Collector

(output)

PIN1

base

(Input)

PIN2

Emitter

(Ground)

1

3

2