RSF2JA2K70 Equivalent & Substitute Parts

Part Overview

The RSF2JA2K70 is a 2.7 kOhms ±5% 2W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame-proof construction and safety certification, designed for applications requiring reliable power dissipation in the 2-watt range. The part is currently in active production status with 828 units available in inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, enabling component selection flexibility for procurement, inventory management, or design optimization.

Substiute Parts

RSF2JA2K70

Stackpole Electronics IncIn Stock: 868RSF2JA2K70 Datasheet

Current PartRFQ

RSF2JB2K70

Stackpole Electronics IncIn Stock: 688RSF2JB2K70 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF2JA2K70 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Resistance value: 2.7 kOhms
• Tolerance: ±5%
• Power rating: 2W
• Composition: Metal Oxide Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 235°C

Mechanical Parameters (Must Match Exactly):

• Package type: Axial
• Physical dimensions: 0.217" Dia x 0.591" L (5.50mm x 15.00mm)
• Number of terminations: 2

Compliance Parameters (Must Match or Exceed):

• RoHS3 Compliant
• REACH Unaffected

The RSF2JB2K70 qualifies as a parametric equivalent substitute. While the flame-proof feature of the main part differs from the flame-retardant coating of the substitute, both parts maintain identical electrical specifications, mechanical compatibility, and regulatory compliance across all critical selection criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the RSF2JA2K70 and RSF2JB2K70 are active production parts manufactured by Stackpole Electronics Inc and maintain full compliance with ROHS3 and REACH regulatory requirements. Selection between these parts should be based on:

Primary Selection Criteria:

• Availability: RSF2JA2K70 has higher inventory (828 units vs. 639 units)
• Flame protection specification: RSF2JA2K70 features flame-proof construction; RSF2JB2K70 features flame-retardant coating
• Application requirements: Verify whether flame-proof or flame-retardant coating is specified in the circuit design or safety standard

Both parts are electrically and mechanically interchangeable for applications requiring 2.7 kOhms ±5% 2W axial metal oxide film resistors within the -55°C to 235°C operating range.

Frequently Asked Questions (FAQ)

Q: Can RSF2JB2K70 be used as a direct replacement for RSF2JA2K70?

A: Yes, the RSF2JB2K70 is electrically and mechanically equivalent. Both parts share identical resistance, tolerance, power rating, temperature coefficient, operating temperature range, and physical dimensions. The difference lies in the flame protection feature: RSF2JA2K70 is flame-proof while RSF2JB2K70 has flame-retardant coating. Verify that your application requirements do not mandate the specific flame-proof specification before substitution.

Q: Are there any dimensional differences between these parts?

A: No. Both RSF2JA2K70 and RSF2JB2K70 have identical physical dimensions of 0.217" diameter by 0.591" length (5.50mm x 15.00mm). They are mechanically interchangeable in PCB layouts and through-hole mounting applications.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both RSF2JA2K70 and RSF2JB2K70 are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations.

Q: What is the difference between flame-proof and flame-retardant coating?

A: Flame-proof construction (RSF2JA2K70) provides inherent resistance to flame propagation. Flame-retardant coating (RSF2JB2K70) applies a protective coating that reduces flammability. The specific requirement depends on your application's safety standard and thermal environment.

Q: Can I use these resistors in high-temperature applications?

A: Yes. Both parts operate across the -55°C to 235°C temperature range with a temperature coefficient of ±200ppm/°C, making them suitable for high-temperature circuit applications within this specification.

Q: Are there inventory considerations for component selection?

A: RSF2JA2K70 has 828 units in stock compared to 639 units for RSF2JB2K70. If procurement lead time is a concern, the main part number offers higher immediate availability.