RSF2JB4K70 Equivalent & Substitute Parts

Part Overview

The RSF2JB4K70 is a 4.7 kOhms ±5% 2W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety design, operating across -55°C to 235°C. The part is Active status and ROHS3 compliant. Substitute parts are necessary when bulk packaging is unavailable or when alternative packaging formats, enhanced specifications, or manufacturer-recommended alternatives are required for procurement flexibility.

Substiute Parts

RSF2JB4K70

Stackpole Electronics IncIn Stock: 858RSF2JB4K70 Datasheet

Current PartRFQ

RSF2JA4K70

Stackpole Electronics IncIn Stock: 2132RSF2JA4K70 Datasheet

DirectRFQ

RSF2JT4K70

Stackpole Electronics IncIn Stock: 4017RSF2JT4K70 Datasheet

DirectRFQ

RSMF3JT4K70

Stackpole Electronics IncIn Stock: 773RSMF3JT4K70 Datasheet

UpgradeRFQ

RSMF2JT4K70

Stackpole Electronics IncIn Stock: 16360RSMF2JT4K70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following core parameters: resistance value (4.7 kOhms), tolerance (±5%), power rating (2W or higher), composition (metal oxide film), package type (axial), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 235°C). Packaging format variations (bulk, tape & box, cut tape) do not affect electrical compatibility. Series designation changes and enhanced flame-proof features represent acceptable upgrades. Dimensional variations within the axial package category are permissible provided the part maintains electrical and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance. RSF2JA4K70 and RSF2JT4K70 are direct electrical equivalents differing only in packaging format. RSMF2JT4K70 is the manufacturer-recommended alternative, offering enhanced flame-proof characteristics while maintaining identical electrical specifications and operating parameters. RSMF3JT4K70 provides upgraded 3W power rating for applications requiring higher thermal margin, with flame-proof construction. Selection should prioritize inventory availability and packaging requirements for procurement efficiency.

Frequently Asked Questions (FAQ)

Q: Can RSF2JA4K70 replace RSF2JB4K70 in production assembly? A: Yes. Both parts are electrically identical with matching resistance, tolerance, power rating, and operating specifications. The difference is packaging format: RSF2JA4K70 uses tape & box while RSF2JB4K70 uses bulk packaging. Selection depends on assembly equipment compatibility and procurement volume requirements.

Q: What is the difference between RSF and RSMF series parts? A: Both series use metal oxide film composition with identical electrical parameters. The primary difference is flame protection: RSF series features flame retardant coating, while RSMF series features flame-proof construction. RSMF parts represent an upgrade path for applications requiring enhanced safety characteristics.

Q: Is RSMF3JT4K70 a direct substitute for RSF2JB4K70? A: RSMF3JT4K70 is functionally compatible but represents an upgrade. It maintains the same resistance, tolerance, and operating temperature range. The upgrade is the 3W power rating versus 2W, providing additional thermal capacity. This part is suitable for applications where higher power dissipation margin is beneficial.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed parts, including RSF2JB4K70 and all substitutes, are ROHS3 compliant and REACH unaffected.

Q: Which substitute has the highest inventory availability? A: RSMF2JT4K70 has the highest inventory at 16,294 pieces, followed by RSF2JT4K70 at 3,914 pieces. Both are cut tape packaged and electrically equivalent to the main part.