RSMF3JB39K0 Equivalent & Substitute Parts

Part Overview

The RSMF3JB39K0 is a 39 kOhms ±5% 3W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame-proof and safety characteristics, designed for applications requiring reliable power dissipation in harsh thermal environments. The part is currently active in production with full RoHS3 compliance. Substitute parts are identified to provide procurement flexibility when the primary packaging configuration is unavailable or when alternative supply chain options are required.

Substiute Parts

RSMF3JB39K0

Stackpole Electronics IncIn Stock: 774RSMF3JB39K0 Datasheet

Current PartRFQ

RSMF3JT39K0

Stackpole Electronics IncIn Stock: 4996RSMF3JT39K0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RSMF3JB39K0 is determined by electrical and mechanical parameter equivalence within the RSMF series. The substitute part RSMF3JT39K0 maintains identical electrical specifications: 39 kOhms resistance, ±5% tolerance, 3W power rating, metal oxide film composition, ±200ppm/°C temperature coefficient, and -55°C to 235°C operating range. Physical dimensions and termination count are identical. The primary distinction between these parts is packaging configuration: RSMF3JB39K0 is supplied in bulk packaging, while RSMF3JT39K0 is supplied in tape and reel format. Both parts carry identical compliance certifications (RoHS3, REACH Unaffected, EAR99).

Parameter Comparison

Engineering Selection Recommendations

Both RSMF3JB39K0 and RSMF3JT39K0 are functionally equivalent for circuit applications requiring 39 kOhms, 3W, ±5% tolerance metal oxide film resistors. Selection between these parts should be based on procurement and assembly requirements. The bulk-packaged RSMF3JB39K0 is suitable for manual assembly, prototyping, and low-volume applications. The tape and reel packaged RSMF3JT39K0 is optimized for automated pick-and-place assembly and high-volume production environments. Both parts maintain identical electrical performance, thermal characteristics, and regulatory compliance across all specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can RSMF3JT39K0 be used as a direct replacement for RSMF3JB39K0 in circuit design?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format. Circuit performance, thermal behavior, and reliability are equivalent.

Q: What is the difference between bulk and tape & reel packaging?

A: Bulk packaging (RSMF3JB39K0) supplies loose components suitable for manual handling and assembly. Tape and reel packaging (RSMF3JT39K0) supplies components on continuous tape for automated assembly equipment. Both contain the same component.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical RoHS3 compliance, REACH Unaffected status, and EAR99 classification.

Q: Can these resistors be used in high-temperature applications?

A: Yes. Both parts are rated for continuous operation from -55°C to 235°C with a temperature coefficient of ±200ppm/°C, making them suitable for elevated temperature environments.

Q: What determines substitutability for the RSMF3JB39K0?

A: Substitutability is determined by matching resistance value (39 kOhms), tolerance (±5%), power rating (3W), composition (metal oxide film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C to 235°C), and physical dimensions (0.217" Dia × 0.591" L). Packaging format does not affect electrical substitutability.