Equivalent & Substitute Parts for 4608X-102-821

Part Overview

The Bourns 4608X-102-821 is a 4-resistor isolated network array with 820 Ohm resistance, ±2% tolerance, and 300mW power per element in an 8-SIP through-hole package. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The 4600X series design provides isolated resistor configurations suitable for signal conditioning, impedance matching, and network applications requiring matched resistor elements.

Substiute Parts

4608X-102-821

Bourns Inc.In Stock: 9274608X-102-821 Datasheet

Current PartRFQ

4608X-102-821LF

Bourns Inc.In Stock: 45164608X-102-821LF Datasheet

DirectRFQ

4308R-102-821

Bourns Inc.In Stock: 12074308R-102-821 Datasheet

SimilarRFQ

4308R-102-821LF

Bourns Inc.In Stock: 45184308R-102-821LF Datasheet

SimilarRFQ

CSC08A03820RGPA

Vishay DaleIn Stock: 904CSC08A03820RGPA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4608X-102-821 is determined by the following critical parameters: resistance value (820 Ohm), tolerance (±2%), number of resistors (4), power per element (300mW), circuit type (isolated), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 125°C), pin count (8), mounting type (through hole), and package type (8-SIP).

Substitute parts are grouped into two categories:

Direct Manufacturer Substitutes (Bourns 4600X Series): Parts maintaining identical electrical specifications and the same base product line, differing only in packaging format or compliance status.

Similar Manufacturer Substitutes (Bourns 4300R Series and Vishay Dale CSC Series): Parts meeting all core electrical parameters with minor variations in physical dimensions and resistor-ratio-drift specifications, while maintaining functional equivalence in isolated 4-resistor network applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 4608X-102-821LF

The 4608X-102-821LF is the direct successor to the obsolete 4608X-102-821, maintaining identical electrical specifications within the same Bourns 4600X product line. This part is active in production, ROHS3 compliant, and available in bulk packaging with 4499 units in stock. Selection of this part eliminates any functional or dimensional compatibility concerns and aligns with current environmental compliance requirements.

Secondary Recommendation: 4308R-102-821LF

The 4308R-102-821LF provides an alternative from the Bourns 4300R series with ROHS3 compliance and active product status. Physical dimensions differ slightly (0.784" L x 0.085" W versus 0.798" L x 0.098" W), and resistor-ratio-drift is specified at 50ppm/°C. This part is suitable for applications where the 4600X series is unavailable and minor dimensional variations are acceptable. Tube packaging is standard for this part.

Tertiary Recommendation: CSC08A03820RGPA

The Vishay Dale CSC08A03820RGPA meets all core electrical parameters and operates within the same temperature range. Physical dimensions are 0.790" L x 0.098" W. This part is active in production but is RoHS non-compliant and REACH affected. Selection is appropriate only when Bourns alternatives are unavailable and compliance requirements permit non-compliant components.

Not Recommended: 4308R-102-821

The 4308R-102-821 is RoHS non-compliant and does not meet current environmental standards. Use only in legacy applications where compliance exemptions apply.

Frequently Asked Questions (FAQ)

Q: Can the 4608X-102-821LF be used as a direct replacement for the 4608X-102-821?

A: Yes. The 4608X-102-821LF maintains identical electrical specifications, pin configuration, and 8-SIP package format. The primary difference is active product status and ROHS3 compliance. Mechanical fit and electrical performance are equivalent.

Q: What is the significance of the "LF" suffix in part numbers?

A: The "LF" suffix indicates lead-free construction and ROHS3 compliance. Parts without this suffix use traditional lead-based solder and are non-compliant with current environmental regulations.

Q: Are there dimensional differences between the 4608X and 4308R series?

A: Yes. The 4608X-102-821 measures 0.798" L x 0.098" W with 0.200" seated height, while the 4308R-102-821 measures 0.784" L x 0.085" W with 0.195" seated height. These differences may affect PCB layout and mechanical clearance. Verify board design compatibility before substitution.

Q: What does "resistor-ratio-drift" mean?

A: Resistor-ratio-drift specifies the change in resistance matching between individual elements over temperature. The 4608X series specifies ±100ppm/°C, while the 4308R series specifies 50ppm/°C. Both values meet the core ±100ppm/°C temperature coefficient requirement for the application.

Q: Can I substitute a Vishay Dale CSC08A03820RGPA for the Bourns part?

A: Electrical and functional compatibility is confirmed. However, the Vishay part is RoHS non-compliant and REACH affected. Substitution is permissible only if compliance requirements do not apply to your application or if regulatory exemptions are documented.

Q: Which substitute part has the best availability?

A: The 4608X-102-821LF has 4499 units in stock, followed by the 4308R-102-821LF with 4447 units. Both parts are actively manufactured and represent the most reliable long-term sourcing options.

Q: Are all substitute parts pin-compatible?

A: Yes. All listed substitutes maintain 8-pin configuration in 8-SIP package format with identical pin assignments for isolated 4-resistor network operation.