Panasonic UNHZ203 User Manual
This product complies with the RoHS Directive (EU 2002/95/EC).
Circuit Protector Elements
UNHZ203
Circuit Protector Elements
For overcurrent protection
1.25
±0.1
0.35
±0.1
0.7
Unit: mm
±0.1
■ Features
• Sharp cutoff characteristics and low voltage drop
• Flame retardant package and low heat generation, high density
mounting is possible.
■ Absolute Maximum Ratings Ta = 25°C
Parameter Symbol Rating Unit
Operating ambient temperature T
Storage temperature T
−55 to +125 °C
opr
−55 to +125 °C
stg
■ Electrical Characteristics Ta = 25°C ± 3°C
Parameter Min Typ Max Unit
Rated voltage 50 V
Rated current 1.2 A
Internal Resistance 35 46 57 mΩ
Cutoff current
Note)*: Measurement condition of cutoff current shall be at Ta = 25°C, t = 1 s
*
Tolerance of cutoff current shall be ± 20%
2.4 A
1
2
0.5
5˚
±0.1
0 to 0.1
Marking Symbol: H3
Lead Connection
0 to 0.1
5˚
+0.1
0.16
–0.06
SMini2-F1 Package
1
2
±0.1
1.7
±0.1
0.4
(0.15)
±0.2
2.5
■ Usage Notes
• Package shall be overheated and dangerous for overcurrent.
• This device should be used only to the secondary circuit.
Package will be damaged for added overpower.
• This device is not electrical fuse legally. Please draw a clear line between electrical fuse from this device.
Publication date: November 2006 SQB00036BED
1
This product complies with the RoHS Directive (EU 2002/95/EC).
UNHZ203
Cutoff current ratio T
1.1
1.0
0.9
0.8
Cutoff current ratio
0.7
0.6
−25 150250 100 12550 75
Ambient temperature Ta (°C)
Cutoff current characteristics
1
−1
10
Ta = 25°C
a
ms)
•
2
t (A
2
I
4
10
3
10
2
10
10
1
1
Cutoff line of real ability by pulse
I2t t
Limit line of real ability by pulse
Recommendable limit line by pulse
10 10
Ta = 25°C
2
3
10
t (ms)
−2
Cutoff time t (s)
10
−3
10
0642
+20%−20%
Cutoff current (A)
2
SQB00036BED
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