Equivalent & Substitute Parts for 07M1003JF

Part Overview

The 07M1003JF is an NTC thermistor with 100kΩ resistance at 25°C, manufactured by Vishay Dale in a bead package configuration. This component is classified as obsolete, making equivalent substitutes necessary for ongoing applications and new designs. The part operates as a temperature-sensing element suitable for free-hanging mounting applications. Due to its obsolete status, identifying compatible alternatives from active product lines is essential for procurement and design continuity.

Substiute Parts

07M1003JF

Vishay DaleIn Stock: 116007M1003JF Datasheet

Current PartRFQ

B57861S0104F040V24

EPCOS - TDK ElectronicsIn Stock: 18051B57861S0104F040V24 Datasheet

MFR RecommendedRFQ

ND03R00104J--

KYOCERA AVXIn Stock: 760ND03R00104J-- Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 07M1003JF is determined by the following critical parameters:

• Resistance value at 25°C: 100kΩ (exact match required)
• Package type: Bead configuration
• Mounting classification: Free Hanging or Through Hole
• Resistance tolerance: ±5% or tighter
• Operating temperature range compatibility
• RoHS compliance status

The identified substitutes maintain the core 100kΩ resistance specification and bead package category. Both alternatives are from active product lines, ensuring long-term availability. Mechanical dimensions (lead wire length) and tolerance specifications vary slightly but remain within acceptable substitution parameters for temperature sensing applications.

Parameter Comparison

Engineering Selection Recommendations

B57861S0104F040V24 (EPCOS - TDK Electronics) is the primary substitute for applications requiring direct compatibility. This part maintains bead package geometry and free-hanging mounting configuration identical to the original 07M1003JF. The tighter resistance tolerance (±1% versus ±5%) provides improved accuracy. Both parts are ROHS3 compliant, ensuring regulatory alignment. The specified operating temperature range of -55°C to 155°C and B25/100 value of 4540K establish defined thermal characteristics for circuit design.

ND03R00104J-- (KYOCERA AVX) serves as an alternative where mechanical package differences are acceptable. This part uses a disc configuration rather than bead geometry and employs through-hole mounting instead of free-hanging. The RoHS non-compliant status may restrict use in regulated applications. The higher maximum power rating (250 mW versus 60 mW) and comparable operating temperature range (-55°C to 150°C) indicate suitability for higher-power sensing circuits.

Selection between these substitutes depends on mechanical mounting requirements and regulatory compliance mandates specific to the application.

Frequently Asked Questions (FAQ)

Q: Can B57861S0104F040V24 directly replace 07M1003JF without circuit modification?

A: Yes. Both parts share identical 100kΩ resistance at 25°C, bead package configuration, and free-hanging mounting type. Lead wire length differs by 0.06" (1.50mm), which is negligible for most applications. The tighter tolerance of B57861S0104F040V24 may improve circuit performance.

Q: What is the primary difference between the two substitute options?

A: B57861S0104F040V24 maintains bead package geometry and free-hanging mounting identical to the original part. ND03R00104J-- uses a disc package with through-hole mounting, requiring different PCB layout and mechanical assembly. Package selection depends on available board space and mounting infrastructure.

Q: Is ND03R00104J-- suitable for applications requiring RoHS compliance?

A: No. ND03R00104J-- is RoHS non-compliant, whereas both the original 07M1003JF and B57861S0104F040V24 are ROHS3 compliant. Applications subject to RoHS regulations must use B57861S0104F040V24.

Q: How do the B-value specifications affect substitution?

A: B-value parameters define thermistor thermal response characteristics. B57861S0104F040V24 specifies B25/100 as 4540K, while ND03R00104J-- specifies B25/85 as 4400K. These values indicate slightly different temperature-resistance curves. Selection depends on the specific temperature measurement range required by the application circuit.

Q: Are lead wire length differences significant?

A: Lead wire lengths vary by less than 0.1" across all three parts (35.00mm to 37.50mm). These differences are typically insignificant for free-hanging or through-hole mounting applications unless the design specifies exact lead geometry for mechanical constraints.