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4308R-101-331LF Equivalent & Substitute Parts
Part Overview
The Bourns 4308R-101-331LF is a 330 Ohm bussed resistor network array with 7 resistors in an 8-SIP through-hole package. This component is actively manufactured and widely used in applications requiring matched resistor networks with tight tolerance specifications. Substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 330 Ohm |
| Tolerance | ±2% |
| Number of Resistors | 7 |
| Circuit Type | Bussed |
| Power Per Element | 200mW |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C to 125°C |
| Package Type | 8-SIP Through Hole |
| Number of Pins | 8 |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the 4308R-101-331LF are qualified based on the following critical parameters:
- Resistance value: 330 Ohm (exact match required)
- Tolerance: ±2% (exact match required)
- Circuit configuration: Bussed network with 7 resistors
- Power rating: 200mW per element (minimum requirement)
- Temperature coefficient: ±100ppm/°C (maximum allowed drift)
- Operating temperature range: -55°C to 125°C (minimum required)
- Package: 8-SIP through-hole configuration
- Pin count: 8 pins (mechanical compatibility)
- Regulatory compliance: ROHS3 compliant
Substitutes are grouped by manufacturer and series while maintaining identical electrical specifications and compatible mechanical form factors.
Parameter Comparison
| Parameter | 4308R-101-331LF (Bourns) | 4608X-101-331LF (Bourns) | CSC08A01330RGEK (Vishay Dale) |
|---|---|---|---|
| Resistance (Ohm) | 330 | 330 | 330 |
| Tolerance | ±2% | ±2% | ±2% |
| Number of Resistors | 7 | 7 | 7 |
| Circuit Type | Bussed | Bussed | Bussed |
| Power Per Element (mW) | 200 | 200 | 200 |
| Temperature Coefficient (ppm/°C) | ±100 | ±100 | ±100 |
| Operating Temperature Range | -55°C to 125°C | -55°C to 125°C | -55°C to 125°C |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | 8-SIP | 8-SIP | 8-SIP |
| Number of Pins | 8 | 8 | 8 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active |
| Length (mm) | 19.91 | 20.27 | 20.07 |
| Width (mm) | 2.16 | 2.49 | 2.49 |
| Height - Seated Max (mm) | 4.95 | 5.08 | 4.95 |
Engineering Selection Recommendations
All three parts meet the core electrical requirements for direct substitution. Selection should be based on the following factors:
4308R-101-331LF (Bourns 4300R Series): Primary specification part. Tube packaging. Resistor-ratio-drift specified at 50ppm/°C. REACH Status: REACH Affected.
4608X-101-331LF (Bourns 4600X Series): Functionally equivalent with identical electrical performance. Bulk packaging. Slightly larger physical dimensions (length 20.27mm, width 2.49mm, height 5.08mm). REACH Status: REACH Unaffected. Higher inventory availability (3370 pcs).
CSC08A01330RGEK (Vishay Dale CSC Series): Functionally equivalent with identical electrical performance. Bulk packaging. Resistor-ratio-drift specified at ±50ppm/°C. Moisture Sensitivity Level: 1 (Unlimited). REACH Status: REACH Unaffected. Highest inventory availability (3433 pcs).
Physical dimensions vary slightly across all three parts. Verify PCB layout clearances before substitution, particularly for the 4608X variant which has the largest footprint.
Frequently Asked Questions (FAQ)
Q: Can the 4608X-101-331LF replace the 4308R-101-331LF in existing designs?
A: Yes. Both parts share identical electrical specifications (330 Ohm, ±2% tolerance, 200mW per element, ±100ppm/°C temperature coefficient, 8-SIP package). Physical dimensions differ slightly; verify PCB layout accommodates the 4608X length of 20.27mm and width of 2.49mm.
Q: What is the difference between the Bourns 4300R and 4600X series?
A: Both series are bussed resistor networks with identical electrical performance for this specification. The primary differences are packaging format (tube vs. bulk) and REACH compliance status. The 4600X series is REACH Unaffected.
Q: Is the Vishay Dale CSC08A01330RGEK a direct substitute?
A: Yes. All electrical parameters match the 4308R-101-331LF. Physical dimensions are comparable (length 20.07mm, width 2.49mm, height 4.95mm). Moisture Sensitivity Level is 1 (Unlimited), indicating no moisture sensitivity restrictions.
Q: Are there any compliance differences between these parts?
A: All three parts are ROHS3 compliant. The 4308R-101-331LF is REACH Affected, while both the 4608X-101-331LF and CSC08A01330RGEK are REACH Unaffected. Verify compliance requirements for your application and region.
Q: What is the resistor-ratio-drift specification and why does it matter?
A: Resistor-ratio-drift measures how the matching between resistors in the array changes with temperature. The 4308R and CSC08A01330RGEK specify 50ppm/°C drift. The 4608X does not specify this parameter. For applications requiring tight resistor matching across temperature ranges, the specified values provide design confidence.
Q: Can these parts be used interchangeably in high-temperature applications?
A: Yes. All three parts operate across the -55°C to 125°C temperature range with ±100ppm/°C temperature coefficient. Verify your specific application's thermal requirements and performance margins.
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