Bourns 4608X-101-821 Equivalent & Substitute Parts

Part Overview

The Bourns 4608X-101-821 is a 7-resistor network array with 820 Ohm resistance values, designed for through-hole mounting in 8-SIP packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part delivers 200mW power per element with ±2% tolerance and operates across -55°C to 125°C temperature range.

Substiute Parts

4608X-101-821

Bourns Inc.In Stock: 7904608X-101-821 Datasheet

Current PartRFQ

4608X-101-821LF

Bourns Inc.In Stock: 26414608X-101-821LF Datasheet

DirectRFQ

4308R-101-821

Bourns Inc.In Stock: 9104308R-101-821 Datasheet

SimilarRFQ

4308R-101-821LF

Bourns Inc.In Stock: 8204308R-101-821LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4608X-101-821 is determined by matching the following critical parameters: resistance value (820 Ohm), tolerance (±2%), number of resistors (7), circuit type (Bussed), power per element (200mW), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 125°C), pin count (8), package type (8-SIP), and through-hole mounting configuration.

The substitute parts are grouped into two categories:

Direct Equivalent (Packaging Variant): 4608X-101-821LF matches all electrical and mechanical specifications of the main part, with the primary difference being RoHS3 compliance status and bulk packaging.

Functional Equivalents (Series Variant): 4308R-101-821 and 4308R-101-821LF belong to the 4300R series and maintain identical electrical specifications. These parts introduce minor dimensional variations and different resistor-ratio-drift specifications (50ppm/°C versus unspecified for the main part), but remain functionally compatible within the defined parameter tolerance.

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliant Applications: Select 4608X-101-821LF as the primary substitute. This part maintains identical electrical and mechanical specifications while providing ROHS3 compliance. Product status is active with substantial inventory availability (2541 units).

For Non-Compliant or Legacy Systems: The 4608X-101-821 remains available with 686 units in stock. If continued sourcing of the obsolete part becomes unavailable, 4308R-101-821 provides functional equivalence with active product status and 890 units in inventory.

For RoHS3 Compliant Systems Requiring Alternative Series: 4308R-101-821LF offers ROHS3 compliance with active product status. This part belongs to the 4300R series and maintains all critical electrical parameters. Inventory availability is 711 units.

Dimensional Considerations: The 4308R series (both 4308R-101-821 and 4308R-101-821LF) exhibits minor dimensional variations: length 0.784" (19.91mm) versus 0.798" (20.27mm), width 0.085" (2.16mm) versus 0.098" (2.49mm), and height 0.195" (4.95mm) versus 0.200" (5.08mm). These differences are within typical PCB layout tolerances for through-hole components.

Frequently Asked Questions (FAQ)

Q: Can 4608X-101-821LF directly replace 4608X-101-821 in existing designs?

A: Yes. The 4608X-101-821LF is a direct equivalent with identical electrical specifications, resistance value, tolerance, power rating, temperature coefficient, and operating range. The primary difference is RoHS3 compliance status. Both parts use 8-SIP through-hole packaging with matching pin configurations.

Q: What are the key differences between the 4600X and 4300R series?

A: Both series maintain identical electrical specifications for this 820 Ohm 7-resistor network configuration. The 4300R series (4308R-101-821 and 4308R-101-821LF) specifies resistor-ratio-drift at 50ppm/°C, whereas the 4600X series does not specify this parameter. Dimensional variations exist: 4300R parts are slightly smaller in length and width. Both series are functionally compatible within the defined tolerance parameters.

Q: Are there RoHS compliance considerations for substitution?

A: Yes. The original 4608X-101-821 is RoHS non-compliant. For applications requiring RoHS3 compliance, use 4608X-101-821LF (same series, active status) or 4308R-101-821LF (4300R series, active status). Both compliant alternatives maintain identical electrical performance.

Q: What is the impact of the resistor-ratio-drift specification on the 4308R series?

A: The 4308R series specifies resistor-ratio-drift at 50ppm/°C. This parameter is not specified for the 4608X series. For applications where resistor matching stability is critical, this specification difference should be evaluated against circuit requirements. Both values remain within acceptable ranges for standard resistor network applications.

Q: Can I use 4308R parts as direct pin-for-pin replacements?

A: Yes. Both 4308R-101-821 and 4308R-101-821LF maintain 8-pin through-hole SIP configuration with identical pin count and electrical function. Minor dimensional differences do not affect PCB hole compatibility or electrical performance.

Q: Which substitute part offers the best inventory availability?

A: The 4608X-101-821LF provides the highest inventory level at 2541 units in stock, followed by 4308R-101-821 at 890 units and 4308R-101-821LF at 711 units.