参数资料
型号: SMAJ28A
厂商: STMICROELECTRONICS
元件分类: TVS二极管 - 瞬态电压抑制
英文描述: 400 W, UNIDIRECTIONAL, SILICON, TVS DIODE, DO-214AC
文件页数: 1/6页
文件大小: 150K
代理商: SMAJ28A
1/6
SMAJ
TRANSIL
REV. 8
K
A
Unidirectional
Bidirectional
SMA
(JEDEC DO-214AC)
February 2006
FEATURES
Peak Pulse Power : 400 W (10/1000s)
Stand off voltage range:
From 5V to 188V
Uni and Bidirectional types
Low clamping factor
Fast response time
JEDEC registered package outline
DESCRIPTION
The SMAJ series are TRANSILTM diodes de-
signed specifically for protecting sensitive equip-
ment against transient overvoltages. The SMA
package allows save spacing on high density
printed circuit boards.
Transil diodes provide high overvoltage protection
by clamping action. Their instantaneous response
to transient overvoltages makes them particularly
suited to protect voltage sensitive devices such as
MOS Technology and low voltage supplied IC’s.
Table 2: Absolute Maximum Rating (Tamb = 25°C)
Table 3: Thermal Resistances
Symbol
Parameter
Value
Unit
PPP
Peak pulse power dissipation (see note 1)
Tj initial = Tamb
400
W
P
Power dissipation on infinite heatsink
Tamb = 50°C
3.3
W
IFSM
Non repetitive surge peak forward
current for unidirectional types
tp = 10 ms
Tj initial = Tamb
40
A
Tstg
Tj
Storage temperature range
Maximum junction temperature
-65 to 175
150
°C
TL
Maximum lead temperature for soldering during 10 s.
260
°C
Note 1: for a surge greater than the maximum values, the diode will fail in short-circuit.
Symbol
Parameter
Value
Unit
Rth(j-l)
Junction to leads
30
°C/W
Rth(j-a) Junction to ambient on printed circuit on recommended pad layout
120
°C/W
Table 1: Order Codes
Part Number
Marking
SMAJxxxA-TR
See page 2
SMAJxxxCA-TR
See page 2
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