Data Sheet
ESD Protection Diode
UMZC6.8N
Applications
ESD Protection
(common anode configuration)
Dimensions（Unit
: mm
）
Land
size figure(Unit
: mm)
1.3
2.0±0.2
0.3±0.1
Features
1) Small mold type. (UMD3)
2) High reliability
(3)
1.25±0.1
2.1±0.1
0.9MIN.
各リードとも
Each lead has same dimension
0.15±0.05
同寸法
0.65
0.8MIN.
0½0.1
UMD3
(2)
(1)
（0.65）
0.7±0.1
0.9±0.1
Construction
Silicon epitaxial planar
0.1Min
（0.65）
Structure
1.3±0.1
ROHM : UMD3
JEDEC :S0T-323
JEITA : SC-70
week code
Taping
specifications（Unit
: mm
）
4.0±0.1
2.0±0.05
φ1.55±0.05
0.3±0.1
1.75±0.1
3.5±0.05
8.0±0.2
2.4±0.1
5.5±0.2
2.25±0.1
0
4.0±0.1
φ0.5±0.05
0½0.1
2.4±0.1
1.25±0.1
Absolute
maximum ratings
(Ta=25°C)
Parameter
Symbol
Power dissipation
P (※)
Junction temperature
T
j
Storage temperature
Tstg
Limits
200
150
-55 to +150
Unit
mW
°C
°C
Electrical
characteristic
(Ta=25°C) (Rating of per diode)
Parameter
Symbol
Min.
Typ.
Zener voltage
V
Z
6.47
-
Reverse current
I
R
-
-
Capacitance between terminals
Ct
-
3
Max.
7.14
0.50
-
Unit
V
μA
pF
Conditions
I
Z
=5mA
V
R
=3.5V
V
R
=0V , f=1MHz
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© 2011 ROHM Co., Ltd. All rights reserved.
1/2
2011.02 - Rev.A
1.6
UMZC6.8N
Electrical
Data Sheet
characteristic curves
10
Ta=150℃
100
Ta=125℃
10
f=1MHz
1
Ta=125℃
Ta=-25℃
Ta=150℃
1
0.1
Ta=75℃
CAPACITANCE BETWEEN
TERMINALS:Ct(pF)
ZENER CURRENT:Iz(mA)
Ta=25℃
REVERSE CURRENT:IR (nA)
Ta=75℃
10
Ta=25℃
0.01
0.001
Ta=-25℃
1
0.1
0.0001
0.01
6
6.5
7
7.5
8
0.00001
0
1
2
3
4
ZENER VOLTAGE:Vz(V)
Vz-Iz CHARACTERISTICS
REVERSE VOLTAGE：VR(V)
VR-IR CHARACTERISTICS
0.1
0
0.5
1
1.5
2
2.5
3
3.5
4
REVERSE VOLTAGE:VR(V)
VR-Ct CHARACTERISTICS
7
ZENER VOLTAGE:Vz(Ｖ)
REVERSE CURRENT:IR(nA)
Ta=25℃
IZ=5mA
n=30pcs
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
Vz DISRESION MAP
IR DISRESION MAP
AVE:0.0143nA
Ta=25℃
VR=3.5V
n=30pcs
10
CAPACITANCE
BETWEENTERMINALS:Ct(pF)
9
8
7
6
5
4
3
2
1
0
Ct DISRESION MAP
AVE:3.10pF
Ta=25℃
f=1MHz
VR=0V
n=10pcs
6.9
6.8
AVE:6.830V
6.7
6.6
6.5
100
1000
TRANSIENT
THAERMAL IMPEDANCE:Rth (℃/W)
Rth(j-a)
Rth(j-c)
100
Mounted on epoxy board
IM=10mA
IF=100mA
DYNAMIC IMPEDANCE:Zz(Ω)
10
10
1ms
time
300us
1
0.1
1
10
1
0.001
0.01
ZENER CURRENT(mA)
Zz-Iz CHARACTERISTICS
1
10
100
TIME:t(s)
Rth-t CHARACTERISTICS
0.1
1000
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© 2011 ROHM Co., Ltd. All rights reserved.
2/2
2011.02 - Rev.A
Datasheet
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Precaution on using ROHM Products
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(Note 1)
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7.
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Precaution for Mounting / Circuit board design
1.
2.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
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Datasheet
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Datasheet
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