B57236S0121M051 Leaded NTC inrush current limiter with 120 Ohm resistance, ±20% tolerance, 1.5A max current, and 11.5mm diameter. Suitable for inrush current limiting in power supplies.
Mfr Part #:

B57236S0121M051

Available from 1 distributors
Mfr Name: TDK Corporation
TDK Corporation
Leaded NTC inrush current limiter with 120 Ohm resistance, ±20% tolerance, 1.5A max current, and 11.5mm diameter. Suitable for inrush current limiting in power supplies.
Total Stock: 9 pcs
$ Price Range: $0.55 - $0.93

B57236S0121M051 Available from 1 distributor

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B57236S0121M051 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Approval Agency
Body Diameter (Nominal/Maximum)
Body Thickness (max)
Climatic Category
Current
Diameter
Dissipation Factor
Flammability Rating
Heat Capacity
Height (Max)
Lead Diameter
Lead Finish
Lead Length (Min)
Lead Spacing
Lead Style
Max Power
Mounting Type
R @ 25°C
R @ Current
Rated Temperature
Safety Approvals
Tape & Reel
Termination Style
Thermal Time Constant
Tolerance
Weight

B57236S0121M051 Description

Short technical summary and product information.

The B57236S0121M051 is a leaded NTC thermistor from TDK Corporation, specifically designed for inrush current limiting applications. It features a resistance of 120 Ohm at 25°C with a tolerance of ±20%. The device can handle a maximum current of 1.5A and a maximum power of 2.1W at 25°C. The thermal characteristics include a dissipation factor of 10 mW/K, a thermal time constant of 70 seconds, and a heat capacity of 700 mJ/K.

 

This inrush current limiter is housed in a through-hole, radial leaded package with a body diameter of 11.5 mm, thickness of 5.0 mm, and height of 16.0 mm. The leads are kinked tinned copper with a diameter of 0.6 ±0.05 mm and a spacing of 5.0 +0.6/-0.1 mm. The minimum lead length is 25.0 mm. The coating is flame retardant to UL 94 V-0.

 

The component is rated for a climatic category of 55/170/21 per IEC 60068-1, indicating an operating temperature range of -55°C to +170°C. It holds safety approvals from UL 1434, IEC, VDE, and CQC. The part is available in bulk, cardboard tape on reel, or ammo pack delivery modes.

B57236S0121M051 Quick Information

Product Type: Inrush Current Limiter (ICL)
Series: S236/**/M**
Canonical Name: TDK B57236S0121M051 NTC Inrush Current Limiter, 120 Ohm, 1.5A, 11.5mm Diameter
Subcategory: Inrush Current Limiter

B57236S0121M051 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

B57236S0121M051 Estimated Pricing

Qty Low High
1+ $0.93 $0.93
10+ $0.83 $0.83
50+ $0.79 $0.79
100+ $0.76 $0.76
500+ $0.69 $0.69
1,000+ $0.60 $0.60
2,000+ $0.57 $0.57
5,000+ $0.55 $0.55

Estimated market price range - modelled values for guidance only, not live distributor offers.

B57236S0121M051 Features

  • Resistance of 120 Ohm at 25°C.
  • Rated for 1.5A maximum current.
  • Maximum power dissipation of 2.1W.
  • Flame retardant coating to UL 94 V-0.
  • Kinked tinned copper leads for radial mounting.

B57236S0121M051 Applications

  • Inrush current limiting in switch-mode power supplies.
  • Soft-start motor circuits.
  • Limiting startup current in AC-DC converters.
  • Protection of bridge rectifiers and capacitors.

B57236S0121M051 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating temperature range of the B57236S0121M051?

The climatic category per IEC 60068-1 is 55/170/21, indicating an operating temperature range of -55°C to +170°C.

What is the RoHS status of this part?

Listed as RoHS3 compliant, but this is unverified and low confidence.

What is the package type of the B57236S0121M051?

Through-hole, radial leaded package with kinked leads and tinned copper finish. Body diameter 11.5mm, thickness 5.0mm, height 16.0mm.

What is the resistance at 25°C and tolerance?

120 Ohm with ±20% tolerance.

What is the maximum current and power rating?

Maximum current 1.5A, maximum power 2.1W at 25°C.

What safety approvals does this part have?

UL 1434, IEC, VDE, and CQC approvals.

What are the lead dimensions?

Lead diameter 0.6 ±0.05 mm, lead spacing 5.0 +0.6/-0.1 mm, minimum lead length 25.0 mm.

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