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This product complies with the RoHS Directive (EU 2002/95/EC).
Circuit Protector Elements
1
Publication date: November 2006 SQB00036BED
UNHZ203
Circuit Protector Elements
For overcurrent protection
■ Features
• Sharp cutoff characteristics and low voltage drop
• Flame retardant package and low heat generation, high density
mounting is possible.
■ Absolute Maximum Ratings T
a
= 25°C
Parameter Symbol Rating Unit
Operating ambient temperature T
opr
−55 to +125 °C
Storage temperature T
stg
−55 to +125 °C
■ 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.
Parameter Min Typ Max Unit
Rated voltage 50 V
Rated current 1.2 A
Internal Resistance 35 46 57 mΩ
Cutoff current
*
2.4 A
■ Electrical Characteristics T
a
= 25°C ± 3°C
Note)
*
: Measurement condition of cutoff current shall be at T
a
= 25°C, t = 1 s
Tolerance of cutoff current shall be ± 20%
Marking Symbol: H3
Unit: mm
SMini2-F1 Package
5˚
5˚
1.25
±0.1
0.7
±0.1
2.5
±0.2
1.7
±0.1
0.4
±0.1
0 to 0.1
(0.15)
0.16
0.5
±0.1
1
2
+0.1
–0.06
0.35
±0.1
0 to 0.1
2
1
Lead Connection