RSMF2JB680R Equivalent & Substitute Parts

Part Overview

The RSMF2JB680R is a 680 Ohms ±5% 2W through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film axial resistor features flame-proof and safety characteristics, designed for applications requiring reliable power dissipation in the 2-watt range. The part is currently active in production with 793 units available in bulk packaging. Substitute parts are identified to address packaging availability, supply chain flexibility, and procurement optimization while maintaining identical electrical and mechanical specifications.

Substiute Parts

RSMF2JB680R

Stackpole Electronics IncIn Stock: 815RSMF2JB680R Datasheet

Current PartRFQ

RSMF2JT680R

Stackpole Electronics IncIn Stock: 1083RSMF2JT680R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The RSMF2JB680R and its identified substitute RSMF2JT680R are direct equivalents based on the following substitution criteria:

Electrical Parameters (Identical):

• Resistance value: 680 Ohms
• Tolerance: ±5%
• Power rating: 2W
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 235°C

Mechanical Parameters (Identical):

• Composition: Metal Oxide Film
• Package type: Axial
• Physical dimensions: 0.177" Dia x 0.433" L (4.50mm x 11.00mm)
• Number of terminations: 2

Compliance & Certification (Identical):

• RoHS3 Compliant
• REACH Unaffected
• ECCN: EAR99
• HTSUS: 8533.21.0090

Differentiation: The only distinction between these parts is packaging format: RSMF2JB680R is supplied in bulk packaging, while RSMF2JT680R is supplied in tape and reel (TR) format. Both parts are manufactured by Stackpole Electronics Inc within the RSMF series and maintain active product status.

Parameter Comparison

Engineering Selection Recommendations

Both RSMF2JB680R and RSMF2JT680R are qualified for direct substitution in applications requiring 680 Ohms ±5% 2W axial resistors. Selection between these parts should be based on procurement and assembly requirements:

RSMF2JB680R (Bulk Packaging): Suitable for manual assembly, prototyping, and low-volume production where individual component handling is standard practice.

RSMF2JT680R (Tape & Reel Packaging): Suitable for automated assembly processes, high-volume production, and pick-and-place machine compatibility where tape and reel format is required.

Both parts maintain identical electrical performance, mechanical compatibility, and regulatory compliance (ROHS3 Compliant, REACH Unaffected). Current inventory status shows 793 units available for RSMF2JB680R and 1060 units for RSMF2JT680R.

Frequently Asked Questions (FAQ)

Q: Can RSMF2JT680R replace RSMF2JB680R in my circuit?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (bulk versus tape and reel). Electrical performance, resistance value, tolerance, power rating, temperature characteristics, and physical dimensions are identical.

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

A: Bulk packaging (RSMF2JB680R) supplies loose components suitable for manual handling and assembly. Tape and reel packaging (RSMF2JT680R) supplies components on continuous tape wound on reels, designed for automated pick-and-place assembly equipment.

Q: Are both parts RoHS compliant?

A: Yes. Both RSMF2JB680R and RSMF2JT680R are ROHS3 Compliant and REACH Unaffected.

Q: What is the operating temperature range for these resistors?

A: Both parts operate across -55°C to 235°C with a temperature coefficient of ±200ppm/°C.

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

A: Yes. The maximum operating temperature of 235°C supports high-temperature applications within the specified range. Verify that your specific application requirements do not exceed this limit.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both RSMF2JB680R and RSMF2JT680R have identical axial dimensions of 0.177" diameter by 0.433" length (4.50mm x 11.00mm).