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Equivalent & Substitute Parts for 4606X-102-121
Part Overview
The Bourns 4606X-102-121 is a 120 Ohm isolated 3-resistor network array in 6-SIP package configuration, rated for 300mW power per element with ±2% tolerance and ±100ppm/°C temperature coefficient. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical specifications and mechanical compatibility within the 6-SIP through-hole form factor.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 120 Ohm |
| Tolerance | ±2% |
| Number of Resistors | 3 |
| Circuit Type | Isolated |
| Power Per Element | 300mW |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C to 125°C |
| Number of Pins | 6 |
| Package Type | 6-SIP Through Hole |
Substitute Part Grouping Explanation
Substitution eligibility for the 4606X-102-121 is determined by strict equivalence across the following parameters: resistance value (120 Ohm), tolerance (±2%), number of resistors (3), circuit topology (isolated), power rating per element (300mW), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 125°C), pin count (6), and package configuration (6-SIP through-hole). Parts meeting all these criteria are classified as direct or similar substitutes. Variations in physical dimensions, RoHS compliance status, REACH classification, and packaging format (bulk vs. tube) do not affect electrical or functional compatibility but may impact procurement and regulatory requirements.
Parameter Comparison
| Parameter | 4606X-102-121 | 4606X-102-121LF | 4306R-102-121 | 4306R-102-121LF | CSC06A03120RGPA |
|---|---|---|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. | Bourns Inc. | Bourns Inc. | Vishay Dale |
| Resistance (Ohm) | 120 | 120 | 120 | 120 | 120 |
| Tolerance | ±2% | ±2% | ±2% | ±2% | ±2% |
| Number of Resistors | 3 | 3 | 3 | 3 | 3 |
| Circuit Type | Isolated | Isolated | Isolated | Isolated | Isolated |
| Power Per Element | 300mW | 300mW | 300mW | 300mW | 300mW |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | ±100ppm/°C | ±100ppm/°C | ±100ppm/°C |
| Operating Temperature | -55°C to 125°C | -55°C to 125°C | -55°C to 125°C | -55°C to 125°C | -55°C to 125°C |
| Number of Pins | 6 | 6 | 6 | 6 | 6 |
| Package / Case | 6-SIP | 6-SIP | 6-SIP | 6-SIP | 6-SIP |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Product Status | Obsolete | Active | Active | Active | Active |
| RoHS Status | Non-compliant | ROHS3 Compliant | Non-compliant | ROHS3 Compliant | Non-compliant |
Engineering Selection Recommendations
For applications requiring RoHS3 compliance, 4606X-102-121LF and 4306R-102-121LF are the appropriate selections among active products. The 4606X-102-121LF maintains the original Bourns 4600X series designation with lead-free processing and is the direct successor to the obsolete 4606X-102-121. The 4306R-102-121LF represents an alternative from the Bourns 4300R series with identical electrical performance and active product status.
For applications without RoHS compliance requirements, 4306R-102-121 provides equivalent functionality with active product status and established supply availability.
The Vishay Dale CSC06A03120RGPA offers cross-manufacturer substitution with active product status. This part maintains all critical electrical parameters and 6-SIP through-hole compatibility, providing supply diversification options.
Frequently Asked Questions (FAQ)
Q: Can 4606X-102-121LF directly replace the obsolete 4606X-102-121?
A: Yes. The 4606X-102-121LF is the active production equivalent with identical electrical specifications, package configuration, and pin assignment. The "LF" designation indicates lead-free RoHS3 compliance processing.
Q: What is the difference between Bourns 4600X and 4300R series parts?
A: Both series meet the specified 120 Ohm, ±2%, 300mW, ±100ppm/°C requirements in 6-SIP configuration. The 4300R series exhibits a resistor-ratio-drift specification of 50ppm/°C, whereas the 4600X series does not specify this parameter. Physical dimensions vary slightly between series.
Q: Is the Vishay Dale CSC06A03120RGPA mechanically compatible?
A: Yes. The CSC06A03120RGPA maintains 6-SIP through-hole package configuration with 6-pin count and identical electrical specifications. Physical dimensions are within acceptable tolerance for standard through-hole PCB layouts.
Q: What are the packaging format differences?
A: The 4606X-102-121LF is supplied in bulk packaging. The 4306R-102-121 and 4306R-102-121LF are supplied in tube packaging. Packaging format does not affect electrical performance or PCB compatibility.
Q: Are there REACH compliance differences among substitutes?
A: The 4606X-102-121, 4606X-102-121LF, and CSC06A03120RGPA are REACH Unaffected. The 4306R-102-121 and 4306R-102-121LF are REACH Affected. Design requirements may dictate selection based on regulatory jurisdiction.
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