© Semiconductor Components Industries, LLC, 2004

December, 2004 − Rev. 4

1

Publication Order Number:

MMBT5550LT1/D

MMBT5550LT1,

MMBT5551LT1

MMBT5551LT1 is a Preferred Device

High Voltage Transistors

NPN Silicon

Features

MAXIMUM RATINGS

Rating

Symbol

5550

5551

Unit

Collector − Emitter Voltage

140

160

Vdc

Collector − Base Voltage

160

180

Vdc

Emitter − Base Voltage

6.0

Vdc

Collector Current − Continuous

600

mAdc

Maximum ratings are those values beyond which device damage can occur.

Maximum ratings applied to the device are individual stress limit values (not

normal operating conditions) and are not valid simultaneously. If these limits

are exceeded, device functional operation is not implied, damage may occur

and reliability may be affected.

THERMAL CHARACTERISTICS

Characteristic

Symbol

Max

Unit

Total Device Dissipation

FR− 5 Board (Note 1)

Derate Above 25

°C

225

1.8

mW

mW/

°C

Thermal Resistance,

Junction−to−Ambient

556

°C/W

Total Device Dissipation

Alumina Substrate (Note 2)

Derate Above 25

°C

300

2.4

mW

mW/

°C

Thermal Resistance,

Junction−to−Ambient

417

°C/W

Junction and Storage Temperature

− 55 to +150

°C

1. FR− 5 = 1.0

 0.75  0.062 in.

2. Alumina = 0.4

 0.3  0.024 in. 99.5% alumina.

Preferred devices are recommended choices for future use

and best overall value.

Device

Package

ORDERING INFORMATION

MMBT5550LT1

SOT−23

3000 Tape & Reel

MMBT5551LT1

SOT−23

SOT−23 (TO−236)

CASE 318

STYLE 6

3000 Tape & Reel

MARKING

DIAGRAM

xxx = MMBT550LT1 = M1F,

MMBT5551LT1, LT3, LT1G = G1

M

= Month Code

COLLECTOR

3

1

BASE

2

EMITTER

xxxM

MMBT5551LT3G

SOT−23

(Pb−Free)

10,000 Tape & Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

MMBT5551LT1G

SOT−23

(Pb−Free)

3000 Tape & Reel

MMBT5551LT3

SOT−23

10,000 Tape & Reel

MMBT5550LT1G

SOT−23

(Pb−Free)

3000 Tape & Reel

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