B57237S220M51 EPCOS Inc, B57237S220M51 Datasheet - Page 9

• Manufacturer Part Number: B57237S220M51
• Description: CURRENT LIMITER INRSH 22 OHM 20%
• Manufacturer: EPCOS Inc
• Type: NTCr
• Series: B57237r

Specifications of B57237S220M51

• Tolerance: ±20%
• Lead Spacing: 0.295" (7.50mm)
• R @ 25°c: 22 Ohm
• Current - Steady State Max: 2.8A
• Diameter: 0.59" (15mm)
• Resistance: 22 Ohms
• Termination Style: Radial
• Operating Temperature Range: - 55 C to + 170 C
• Current Rating: 2.8 Amps
• Dimensions: 15 mm Dia. x 7 mm W x 22 mm H
• Power Rating: 3.1 W
• Thermistor Type: NTC
• Thermistor Tolerance: ± 20%
• Beta Value (k): 3300K
• Thermistor Case Style: Radial Leaded
• No. Of Pins: 2
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• R @ Current: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: B57237S 220M 51; B57237S0220M051

Wave soldering
Temperature characteristic at component terminal with dual wave soldering
2
The leads meet the requirements of IEC 60068-2-21. They may not be bent closer than 4 mm
from the solder joint on the thermistor body or from the point at which they leave the feed-
throughs. During bending, any mechanical stress at the outlet of the leads must be removed. The
bending radius should be at least 0.75 mm.
Tensile strength:
Bending strength: Test Ub:
Torsional strength: Test Uc: severity 2
Please read Cautions and warnings and
Important notes at the end of this document.
Inrush current limiters
ICLs
Robustness of terminations
Two 90 -bends in opposite directions at a weight of 0.25 kg.
The lead is bent by 90 at a distance of 6 to 6.5 mm from the thermistor body.
The bending radius of the leads should be approx. 0.75 mm. Two torsions of
180 each (severity 2).
Test Ua1:
Leads
0.50 <
0.80 <
0.80 mm = 10.0 N
1.25 mm = 20.0 N
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B57237
S237