A Product Line of
Diodes Incorporated
Green
ZTX1049A
25V NPN MEDIUM POWER TRANSISTOR IN E-LINE
Features Mechanical Data
BV > 25V Case: E-Line (TO-92 Compatible)
CEO
Case Material: molded plastic, Green Molding Compound
IC = 4A High Continuous Collector Current
UL Flammability Classification Rating 94V-0
I = 20A Peak Pulse Current
CM
Terminals: Finish Matte Tin Plated Leads, Solderable per
T up to 200C for High Temperature Operation
J
MIL-STD-202, Method 208
Low Saturation Voltage < 75mV @ 1A
Weight: 0.159 grams (approximate)
P = 1W Power dissipation
D
Lead-Free Finish; RoHS compliant (Note 1 & 2)
Halogen and Antimony Free. Green Device (Note 3)
Qualified to AEC-Q101 Standards for High Reliability
Applications
LCD Backlight Converters
Emergency Lighting
DC-DC Converters
Part Mark on
E-Line
Rounded Face
(TO-92 Compatible)
C
C B E Ejection Mark
on Flat Face
Bottom View
B
E
C
C B E B E
Rounded Face View
Flat Face View Device Symbol
Pin-Out Configuration
Ordering Information (Note 4)
Part Number Marking Case Leads Quantity
ZTX1049ASTZ ZTX1049A E-Line Joggled 2,000 taped per Ammo Box
ZTX1049A ZTX1049A E-Line Straight 4,000 loose in a Box
Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.
2. See
A Product Line of
Diodes Incorporated
ZTX1049A
Maximum Ratings (@TA = +25C, unless otherwise specified.)
Characteristic Symbol Value Unit
Collector-Base Voltage 80 V
VCBO
Collector-Emitter Voltage 25 V
V
CEO
Emitter-Base Voltage 5 V
V
EBO
Continuous Collector Current 4 A
I
C
Peak Pulse Current 20 A
I
CM
Base Current I 500 mA
B
Thermal Characteristics (@T = +25C, unless otherwise specified.)
A
Characteristic Symbol Value Unit
Power Dissipation (Note 5) 1.5 W
P
D
Power Dissipation (Note 6) 1 W
P
D
Thermal Resistance Junction to Ambient (Note 5) 116 C/W
R JA
Thermal Resistance Junction to Ambient (Note 6) R 175 C/W
JA
Thermal Resistance Junction to Lead (Note 7) 63.75
R C/W
JL
Operating and Storage Temperature Range T T -55 to +200 C
J, STG
ESD Ratings (Note 8)
Characteristic Symbol Value Unit JEDEC Class
4,000 3A
Electrostatic Discharge - Human Body Model ESD HBM V
Electrostatic Discharge - Machine Model ESD MM 400 V C
Notes: 5. For a through-hole device mounted at the seating plane (2.5mm lead length) with the collector lead on 25mm X 25mm 1oz weight copper
that is on a single-sided FR4 PCB; device is measured under still air conditions whilst operating in a steady-state.
6. Same as note (5), except the device is mounted on minimum recommended pad layout with 12mm lead length from the bottom of package to the board.
7. Thermal resistance from junction to solder-point at the seating plane (2.5mm from the bottom of package along the collector lead).
8. Refer to JEDEC specification JESD22-A114 and JESD22-A115.
Thermal Characteristics and Derating Information
2 of 6
May 2013
ZTX1049A
Diodes Incorporated
www.diodes.com
Document number: DS33327 Rev. 5 - 2