B57421V2681J62 EPCOS Inc, B57421V2681J62 Datasheet - Page 12

• Manufacturer Part Number: B57421V2681J62
• Description: THERMISTOR NTC 680 OHM 5% 0805
• Manufacturer: EPCOS Inc
• Series: B574**V2r
• Type: NTCr

Specifications of B57421V2681J62

• Package / Case: 0805 (2012 Metric)
• Resistance In Ohms @ 25°c: 680
• Resistance Tolerance: ±5%
• B Value Tolerance: ±3%
• B25/50: 3940K
• B25/85: 3980K
• B25/100: 4000K
• Operating Temperature: -55°C ~ 125°C
• Power - Max: 210mW
• Mounting Type: Surface Mount
• Description Of Terminals: Leadless
• Mounting Style: Surface Mount
• Pin Count: 2
• Resistance @ 25c: 680Ohm
• Thermal Time Constant: 10s
• Percentage Of Resistance Tolerance @ 25c: ±5
• Product Length (mm): 2mm
• Product Depth (mm): 1.25mm
• Resistance: 680 Ohms
• Tolerance: 5 %
• Termination Style: SMD/SMT
• Operating Temperature Range: - 55 C to + 125 C
• Power Rating: 210 MW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• B0/50: -
• B25/75: -
• Lead Length: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: B57421V2681J 62; B57421V2681J062

Reflow soldering
Recommended temperature characteristic for reflow soldering following J-STD-020C
Profile feature
Average ramp-up rate
(T
Preheat
- Temperature min (T
- Temperature max (T
- Time (t
Time maintained above:
- Temperature min (T
- Time (t
Peak/ classification
temperature (T
Time within 5 C of actual
peak temperature (t
Ramp-down rate
Time 25 C to peak
temperature
Note: All temperatures refer to topside of the package, measured on the package body surface.
Please read Cautions and warnings and
Important notes at the end of this document.
Temperature measurement and compensation
SMD NTC thermistors, case size 0805 (2012)
Smax
to Tp)
Smin
L
)
to t
Smax
p
)
)
p
Smin
L
)
Smax
)
)
)
Sn-Pb eutectic assembly
3 C/ second max.
100 C
150 C
60 ... 120 seconds
183 C
60 ... 150 seconds
220 C ... 240 C
10 ... 30 seconds
6 C/ second max.
6 minutes max.
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Pb-free assembly
3 C/ second max.
150 C
200 C
60 ... 180 seconds
217 C
60 ... 150 seconds
240 C ... 260 C
20 ... 40 seconds
6 C/ second max.
8 minutes max.
B574**V2