RSF2JB680R Equivalent & Substitute Parts

Part Overview

The RSF2JB680R is a 680 Ohms ±5% 2W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame retardant coating and safety design, suitable for applications requiring reliable power dissipation in the 2-watt range. The part is currently active in production with full RoHS3 compliance. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to packaging availability, inventory constraints, or specific application requirements.

Substiute Parts

RSF2JB680R

Stackpole Electronics IncIn Stock: 744RSF2JB680R Datasheet

Current PartRFQ

RSMF2JT680R

Stackpole Electronics IncIn Stock: 1083RSMF2JT680R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RSF2JB680R with RSMF2JT680R is valid based on the following electrical and mechanical equivalence criteria:

• Identical resistance value: 680 Ohms
• Identical tolerance: ±5%
• Identical power rating: 2W
• Identical composition: Metal Oxide Film
• Identical temperature coefficient: ±200ppm/°C
• Identical operating temperature range: -55°C ~ 235°C
• Identical package type: Axial with 2 terminations
• Identical RoHS3 compliance status

The primary difference between these parts is packaging format (Bulk versus Tape & Reel) and physical dimensions. Both parts maintain the same electrical performance characteristics and safety certifications required for equivalent circuit operation.

Parameter Comparison

Engineering Selection Recommendations

Both RSF2JB680R and RSMF2JT680R are active production parts with identical electrical specifications and full RoHS3 compliance. Selection between these parts should be based on:

• Packaging requirements: RSF2JB680R is supplied in Bulk format; RSMF2JT680R is supplied in Tape & Reel format for automated assembly processes
• Physical dimensions: RSMF2JT680R has a smaller form factor (4.50mm diameter x 11.00mm length) compared to RSF2JB680R (5.50mm diameter x 15.00mm length)
• Inventory availability: RSMF2JT680R currently has 1060 pieces in stock; RSF2JB680R has 646 pieces in stock

Both parts are functionally equivalent for circuit applications requiring 680 Ohm 2W axial resistors with ±5% tolerance and -55°C to 235°C operating range.

Frequently Asked Questions (FAQ)

Q: Can RSMF2JT680R be used as a direct replacement for RSF2JB680R in circuit design?

A: Yes. Both parts have identical electrical specifications: 680 Ohms ±5% tolerance, 2W power rating, metal oxide film composition, ±200ppm/°C temperature coefficient, and -55°C to 235°C operating temperature range. Electrical performance is equivalent.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format and physical dimensions. RSF2JB680R is supplied in Bulk packaging with dimensions of 5.50mm diameter x 15.00mm length. RSMF2JT680R is supplied in Tape & Reel format with smaller dimensions of 4.50mm diameter x 11.00mm length.

Q: Which part should be selected for automated assembly?

A: RSMF2JT680R in Tape & Reel format is designed for automated pick-and-place assembly processes. RSF2JB680R in Bulk format is suitable for manual assembly or applications where tape packaging is not required.

Q: Are both parts RoHS compliant?

A: Yes. Both RSF2JB680R and RSMF2JT680R are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Can the smaller physical dimensions of RSMF2JT680R affect circuit board layout?

A: The smaller form factor of RSMF2JT680R (4.50mm x 11.00mm) compared to RSF2JB680R (5.50mm x 15.00mm) may allow for more compact board layouts. However, both parts are axial through-hole components with identical electrical function, so substitution depends on available board space and design requirements.