Equivalent & Substitute Parts for 08C1003JF

Part Overview

The 08C1003JF is an NTC thermistor manufactured by Vishay Dale with a nominal resistance of 100kΩ at 25°C in a bead package configuration. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The product is available in bulk packaging with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Due to its discontinued design status, identifying functionally equivalent alternatives is necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

08C1003JF

Vishay DaleIn Stock: 100408C1003JF Datasheet

Current PartRFQ

ND03R00104J--

KYOCERA AVXIn Stock: 760ND03R00104J-- Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 08C1003JF is determined by the following critical parameters:

• Resistance Value: 100kΩ nominal at 25°C
• Resistance Tolerance: ±5% maximum deviation
• Package Configuration: Bead or disc form factor suitable for free-hanging or through-hole mounting
• Lead Wire Length: Approximately 35–36mm to maintain mechanical compatibility
• Electrical Characteristics: NTC thermistor behavior with matching thermal response

The ND03R00104J-- from KYOCERA AVX meets these core substitution criteria. Both components share identical nominal resistance (100kΩ), matching tolerance (±5%), and compatible lead wire lengths (35mm vs. 36mm). The ND03R00104J-- is supplied in a disc package (4.6mm diameter × 3.0mm width) rather than a bead, but maintains functional equivalence for temperature sensing applications requiring 100kΩ NTC thermistors.

Parameter Comparison

Engineering Selection Recommendations

The ND03R00104J-- qualifies as a functional substitute for the 08C1003JF based on matching resistance specifications and tolerance requirements. Key considerations for selection:

Product Status: The 08C1003JF is designated "Not For New Designs," whereas the ND03R00104J-- maintains active product status, ensuring continued availability and manufacturing support.

Compliance Differences: The 08C1003JF carries RoHS3 compliance; the ND03R00104J-- is RoHS non-compliant. Applications subject to RoHS regulatory requirements must account for this distinction.

Package Transition: The shift from bead to disc package requires mechanical validation in the target application. Lead wire length variance (1mm difference) is negligible for most circuit board layouts but should be confirmed for space-constrained designs.

Thermal Characteristics: The ND03R00104J-- provides specified B25/85 value (4400K) and operating temperature range (-55°C to 150°C), offering greater thermal definition than the original part. Power rating specification (250 mW) enables precise thermal dissipation calculations.

Frequently Asked Questions (FAQ)

Q: Can the ND03R00104J-- directly replace the 08C1003JF without circuit modification?

A: Yes, for applications where the 100kΩ resistance and ±5% tolerance are the primary functional requirements. The 1mm lead wire length difference and package form change (bead to disc) require mechanical fit verification in the specific application.

Q: What is the significance of the B25/85 value listed for the substitute?

A: The B25/85 value (4400K) characterizes the thermistor's thermal response between 25°C and 85°C. This parameter is not specified for the 08C1003JF but is provided for the ND03R00104J--, enabling more precise thermal modeling if required.

Q: Does the RoHS non-compliance of the ND03R00104J-- affect its electrical performance?

A: RoHS compliance status reflects manufacturing process restrictions, not electrical performance. The ND03R00104J-- meets identical electrical specifications (100kΩ, ±5% tolerance). Applications in RoHS-regulated markets must evaluate regulatory implications independently.

Q: Are there mechanical considerations when transitioning from bead to disc package?

A: Yes. The bead package (08C1003JF) is optimized for free-hanging mounting, while the disc package (ND03R00104J--) is designed for through-hole mounting. PCB layout, lead spacing, and mechanical support structures must be validated for the new package geometry.

Q: What is the practical difference in lead wire length between these parts?

A: The 1mm difference (36mm vs. 35mm) is typically insignificant for standard PCB designs. However, applications with tight lead length constraints should measure the actual requirement before substitution.