ROHM EMX18 UMX18N Data Sheet
Summary
The EMX18/UMX18N are general-purpose dual NPN transistors designed for reliable signal amplification in various electronics. This comprehensive manual details full specifications, including absolute ratings, electrical performance curves, and stability data across wide temperature ranges (-40°C to 125°C). Ideal for audio visual equipment, office automation hardware, and standard consumer devices, these components save space and cost by integrating two independent transistors into a single package.
Page 1 Text Content
EMX18 / UMX18N
Transistors
General purpose transistors (dual transistors) EMX18 / UMX18N
Features External dimensions (Unit : mm)
1) Two 2SC5585 chips in a EMT or UMT package.
EMX18
2) Mounting possible with EMT3 or UMT3 automatic
mounting machines.
(2)(5) (6) (1) 3) Transistor elements are independent, eliminating 1.2 1.6
interference. 4) Mounting cost and area can be cut in half.
Each lead has same dimensions
ROHM : EMT6
Abbreviated symbol : X18
Structure Epitaxial planar type
UMX18N
NPN silicon transistor
The following characteristics apply to both Tr1 and Tr2.
0.1Min. 0. 0. 0. 1.
Each lead has same dimensions0~ 0. 90. 1.
Equivalent circuit 2.
ROHM : UMT6 EIAJ : SC-88
EMX18 / UMX18N Abbreviated symbol : X18 (3) (2) (1)
Absolute maximum ratings (Ta=25°C)
Parameter Symbol Limits Unit
Collector-base voltage VCBO
Collector-emitter voltage VCEO
Emitter-base voltage VEBO
IC m A500
Collector current
ICP A1.0 Power dissipation Pd 150 (TOTAL) m W ∗1
Junction temperature Tj ˚C Storage temperature Tstg −55 to +150 ˚C
∗1 120m W per element must not be exceeded.
Rev.A 1/3
Page Summary Contents For ROHM EMX18 UMX18N Data Sheet
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 4 |
| File Size | 70.28 KB |
| Published | June 02, 2026 |
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Frequently Asked Questions
Can these transistors be used in high-reliability or life-safety applications?
No, for equipment requiring extremely high reliability, consult a sales representative in advance.
What benefit does using dual transistors like the EMX18 provide?
The elements are independent, eliminating interference and cutting mounting cost/area in half.
What is the maximum power dissipation allowed per element?
When considering junction temperature (Tj), 120 mW per element must not be exceeded.
How can these transistors be physically mounted?
Mounting is possible using EMT3 or UMT3 automatic mounting machines.