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                                                                                                    1. Home
                                                                                                    2. Sensors & Transducers
                                                                                                    3. Sensors
                                                                                                    4. Temperature Sensors & Transducers
                                                                                                    5. Thermistors
                                                                                                    6. NTC Thermistors
                                                                                                    Print Page

                                                                                                    B57861S0303F040

                                                                                                    THERMISTOR, AEC-Q200, NTC, 30K, TH

                                                                                                    Date/Lot Code

                                                                                                    TDK
                                                                                                    Image is for illustrative purposes only. Please refer to product description.
                                                                                                    TDK B57861S0303F040
                                                                                                    ManufacturerTDK
                                                                                                    Manufacturer Part NoB57861S0303F040
                                                                                                    Newark Part No.46WX1275
                                                                                                    Product RangeB57861S Series
                                                                                                    Your Part Number
                                                                                                    Technical Datasheet

                                                                                                    Data Sheet

                                                                                                    See all Technical Docs
                                                                                                    1,189 In Stock

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                                                                                                    Delivery in 2-4 Business Days(UK stock)
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                                                                                                    Price shown includes applicable duties and tariffs
                                                                                                    QuantityPrice
                                                                                                    1+$2.760
                                                                                                    10+$2.610
                                                                                                    25+$2.500
                                                                                                    50+$2.400
                                                                                                    100+$2.290
                                                                                                    500+$2.200
                                                                                                    Price for:Each
                                                                                                    Minimum: 5
                                                                                                    Multiple: 5
                                                                                                    $13.80
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                                                                                                    Added to your Order Confirmation, Invoice, and Dispatch note for this order only.

                                                                                                    Product Information

                                                                                                    TDK
                                                                                                    ManufacturerTDK
                                                                                                    Manufacturer Part NoB57861S0303F040
                                                                                                    Newark Part No.46WX1275
                                                                                                    Product RangeB57861S Series
                                                                                                    Technical Datasheet

                                                                                                    Data Sheet

                                                                                                    Thermistor TypeNTC
                                                                                                    Resistance (25°C)30kohm
                                                                                                    Thermistor MountingThrough Hole
                                                                                                    Resistance Tolerance (25°C)± 1%
                                                                                                    Thermistor MountingThrough Hole
                                                                                                    Product RangeB57861S Series
                                                                                                    Thermistor Case Style-
                                                                                                    NTC MountingFree Hanging
                                                                                                    Thermistor TerminalsWire Leaded
                                                                                                    Thermistor TerminalsWire Leaded
                                                                                                    B-Constant3964K
                                                                                                    B-Constant Tolerance± 1%
                                                                                                    NTC Case Size-
                                                                                                    Thermal Time Constant (in Air)-
                                                                                                    Probe Material-
                                                                                                    Probe Diameter-
                                                                                                    Lead Length45mm
                                                                                                    Operating Temperature Min-55°C
                                                                                                    Operating Temperature Max155°C
                                                                                                    QualificationAEC-Q200
                                                                                                    Automotive Qualification StandardAEC-Q200
                                                                                                    SVHCLead (25-Jun-2025)

                                                                                                    Product Overview

                                                                                                    The B57861S0303F040 is a 2-pin NTC Thermistor with epoxy resin encapsulation, PTFE-insulated leads of silver plated nickel wire (30AWG) and miniature sensors comes with bendable wires. This B57861S series through hole mounting thermistor features high measuring accuracy and short response time. A lead (wire) may be bent at a minimum distance of twice the wire's diameter plus 4mm from the component head or housing. When bending ensure the wire is mechanically relieved at the component head or housing. Twisting (torsion) by 180° of a lead bent by 90° is permissible at 6mm from the bottom of the thermistor body. Soldering can use resin-type flux or non-activated flux. The soldering due to insufficient preheating may cause ceramic cracks. Suitable for temperature measurement and heating systems.

                                                                                                    • Bending radius should be at least 0.75mm
                                                                                                    • Fast response time
                                                                                                    • 60mW Maximum power

                                                                                                    Applications

                                                                                                    Test & Measurement, HVAC, Industrial, Automotive

                                                                                                    Warnings

                                                                                                    Do not store thermistors where they are exposed to heat or direct sunlight. Avoid contamination of thermistor surface during storage, handling and processing. Do not touch components with bare hands.

                                                                                                    Notes

                                                                                                    Gloves are recommended.

                                                                                                    Technical Specifications

                                                                                                    Thermistor Type

                                                                                                    NTC

                                                                                                    Thermistor Mounting

                                                                                                    Through Hole

                                                                                                    Thermistor Mounting

                                                                                                    Through Hole

                                                                                                    Thermistor Case Style

                                                                                                    -

                                                                                                    Thermistor Terminals

                                                                                                    Wire Leaded

                                                                                                    B-Constant

                                                                                                    3964K

                                                                                                    NTC Case Size

                                                                                                    -

                                                                                                    Probe Material

                                                                                                    -

                                                                                                    Lead Length

                                                                                                    45mm

                                                                                                    Operating Temperature Max

                                                                                                    155°C

                                                                                                    Automotive Qualification Standard

                                                                                                    AEC-Q200

                                                                                                    Resistance (25°C)

                                                                                                    30kohm

                                                                                                    Resistance Tolerance (25°C)

                                                                                                    ± 1%

                                                                                                    Product Range

                                                                                                    B57861S Series

                                                                                                    NTC Mounting

                                                                                                    Free Hanging

                                                                                                    Thermistor Terminals

                                                                                                    Wire Leaded

                                                                                                    B-Constant Tolerance

                                                                                                    ± 1%

                                                                                                    Thermal Time Constant (in Air)

                                                                                                    -

                                                                                                    Probe Diameter

                                                                                                    -

                                                                                                    Operating Temperature Min

                                                                                                    -55°C

                                                                                                    Qualification

                                                                                                    AEC-Q200

                                                                                                    SVHC

                                                                                                    Lead (25-Jun-2025)

                                                                                                    Technical Docs (2)

                                                                                                    Product Change Notice EN

                                                                                                    Technical Data Sheet EN

                                                                                                    Legislation and Environmental

                                                                                                    US ECCN:EAR99
                                                                                                    EU ECCN:Unknown
                                                                                                    RoHS Compliant:Y-Ex

                                                                                                    RoHS

                                                                                                    RoHS Phthalates Compliant:Yes

                                                                                                    RoHS

                                                                                                    SVHC:Lead (25-Jun-2025)
                                                                                                    Download Product Compliance Certificate

                                                                                                    Product Compliance Certificate

                                                                                                    Product traceability

                                                                                                    Date/Lot Code

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