CB7JB2R20 Equivalent & Substitute Parts

Part Overview

The CB7JB2R20 is a 2.2 Ohm, 5% tolerance, 7W axial wirewound resistor manufactured by Stackpole Electronics Inc. This through-hole component features flame-proof and moisture-resistant construction with a safety rating, designed for applications requiring reliable power dissipation in harsh environments. The part maintains Active product status with 823 units in current inventory. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

CB7JB2R20

Stackpole Electronics IncIn Stock: 833CB7JB2R20 Datasheet

Current PartRFQ

SQPW72R2J

TE Connectivity Passive ProductIn Stock: 1264SQPW72R2J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CB7JB2R20 are qualified based on the following critical parameters:

• Electrical Match: Resistance value (2.2 Ohms) and tolerance (±5%) must be identical
• Power Capacity: 7W power rating must be maintained
• Construction Type: Wirewound composition required
• Package Compatibility: Axial through-hole package mandatory
• Environmental Features: Flame-proof and moisture-resistant construction required
• Regulatory Compliance: ROHS3 compliance and EAR99 classification maintained
• Termination Count: 2-terminal configuration

The substitute part SQPW72R2J from TE Connectivity Passive Product meets all these criteria, enabling direct functional replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the CB7JB2R20 and SQPW72R2J maintain Active product status and full ROHS3 compliance, qualifying them for equivalent use in applications requiring 2.2 Ohm, 7W axial wirewound resistors. Selection between these parts should be based on:

• Inventory Availability: CB7JB2R20 has 823 units in stock; SQPW72R2J has 1236 units available
• Temperature Operating Range: CB7JB2R20 supports -55°C to 275°C; SQPW72R2J supports -55°C to 250°C. Applications requiring operation above 250°C require the CB7JB2R20
• Temperature Coefficient Stability: CB7JB2R20 offers ±200ppm/°C; SQPW72R2J offers ±300ppm/°C. Applications with stringent temperature stability requirements favor the CB7JB2R20
• Physical Dimensions: CB7JB2R20 is 0.374" square × 1.378" L; SQPW72R2J is 0.394" × 0.354" rectangular × 1.378" L. PCB layout constraints may influence selection
• Regulatory Alignment: Both parts maintain identical ECCN (EAR99) and HTSUS classifications

Frequently Asked Questions (FAQ)

Q: Can SQPW72R2J replace CB7JB2R20 in all applications?

A: SQPW72J can replace CB7JB2R20 in applications operating within -55°C to 250°C. Applications requiring operation above 250°C must use CB7JB2R20, which is rated to 275°C.

Q: What are the physical dimension differences between these parts?

A: CB7JB2R20 has a 0.374" square cross-section; SQPW72R2J has a 0.394" × 0.354" rectangular cross-section. Both are 1.378" in length. PCB footprint and thermal management considerations may influence selection.

Q: Are both parts RoHS compliant?

A: Yes, both CB7JB2R20 and SQPW72R2J are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What is the tolerance difference impact?

A: Both parts share ±5% tolerance. The temperature coefficient differs: CB7JB2R20 at ±200ppm/°C and SQPW72R2J at ±300ppm/°C. For applications with tight temperature stability requirements, CB7JB2R20 provides superior performance.

Q: Are the axial packages mechanically interchangeable?

A: Both parts use axial through-hole packages with identical lead spacing (1.378" length) and 2-terminal configuration, enabling mechanical interchangeability on standard PCB layouts. Verify footprint dimensions for space-constrained designs.