RC12JB330R Equivalent & Substitute Parts

Part Overview

The RC12JB330R is a 330 Ohm ±5% 0.5W through-hole axial resistor manufactured by Stackpole Electronics Inc. This carbon composition resistor features non-inductive and pulse withstanding characteristics, designed for applications requiring robust performance across industrial temperature ranges (-55°C to 125°C). The product is classified as obsolete, making equivalent substitutes necessary for ongoing procurement and system maintenance.

Substiute Parts

RC12JB330R

Stackpole Electronics IncIn Stock: 1146RC12JB330R Datasheet

Current PartRFQ

ASRM12JB330R

Stackpole Electronics IncIn Stock: 1063ASRM12JB330R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC12JB330R is determined by the following critical parameters:

• Resistance Value: Must be 330 Ohms
• Tolerance: Must be ±5% or tighter
• Power Rating: Must be 0.5W (1/2W) or higher
• Package Type: Must be Axial configuration
• Termination Count: Must be 2-pin
• Operating Temperature Range: Must encompass or exceed -55°C to 125°C
• Regulatory Compliance: Must maintain ROHS3 compliance

The ASRM12JB330R meets all substitution criteria. While it uses metal film composition instead of carbon composition, it maintains identical electrical specifications (330 Ohms ±5%, 0.5W), operates across an extended temperature range (-55°C to 155°C), and is classified as an active product with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JB330R is the qualified substitute for the obsolete RC12JB330R. Selection is based on:

• Electrical Equivalence: Both parts deliver identical resistance (330 Ohms ±5%) and power handling (0.5W), ensuring functional compatibility in circuit applications.
• Product Status: The ASRM12JB330R is actively manufactured, providing long-term procurement reliability compared to the obsolete RC12JB330R.
• Temperature Performance: The substitute operates across an extended temperature range (-55°C to 155°C), exceeding the original part's specification (-55°C to 125°C).
• Regulatory Compliance: Both parts maintain ROHS3 compliance, satisfying environmental and safety requirements.
• Physical Compatibility: Axial package configuration and 2-pin termination are identical, allowing direct board-level substitution.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JB330R be used as a direct replacement for RC12JB330R?

A: Yes. Both parts share identical electrical specifications (330 Ohms ±5%, 0.5W), axial package configuration, and 2-pin termination. The substitute is physically and electrically compatible for direct board-level replacement.

Q: What is the primary difference between these two resistors?

A: The RC12JB330R uses carbon composition construction, while the ASRM12JB330R uses metal film construction. Both achieve the same resistance value and tolerance. The metal film variant offers improved temperature stability (specified temperature coefficient of 0 / -1800ppm/°C) and operates across a wider temperature range.

Q: Why is the RC12JB330R classified as obsolete?

A: The RC12JB330R is no longer in active production. The ASRM12JB330R represents the current active equivalent from the same manufacturer, providing continued design support and procurement availability.

Q: Are there any dimensional differences between these parts?

A: Yes. The RC12JB330R measures 0.142" Dia x 0.374" L (3.60mm x 9.50mm), while the ASRM12JB330R measures 0.118" Dia x 0.354" L (3.00mm x 9.00mm). Both are axial packages and fit standard through-hole footprints, though the substitute is slightly more compact.

Q: What certifications apply to both parts?

A: Both parts are ROHS3 compliant and classified under ECCN EAR99 for export purposes. The RC12JB330R is REACH Unaffected, and both carry HTSUS commodity codes appropriate for electronic components.