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CIC31P151NE Equivalent & Substitute Parts
Part Overview
The CIC31P151NE is a 150 Ohm ferrite bead manufactured by Samsung Electro-Mechanics, designed for power line filtering applications in 1206 (3216 Metric) surface mount packages. This component operates at 100 MHz impedance with a maximum current rating of 2A and 50mOhm DC resistance. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility for new designs and production continuity.
Substiute Parts
Key Parameters
| Parameter | CIC31P151NE |
|---|---|
| Impedance @ Frequency | 150 Ohms @ 100 MHz |
| Current Rating (Max) | 2A |
| DC Resistance (Max) | 50mOhm |
| Package / Case | 1206 (3216 Metric) |
| Operating Temperature | -55°C ~ 125°C |
| Filter Type | Power Line |
| Number of Lines | 1 |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the CIC31P151NE is determined by the following critical parameters:
Primary Matching Criteria:
- Impedance @ 100 MHz: 150 Ohms (exact match required for frequency response)
- Package / Case: 1206 (3216 Metric) (physical and electrical compatibility)
- Mounting Type: Surface Mount (assembly compatibility)
- Number of Lines: 1 (circuit topology match)
Secondary Compatibility Criteria:
- Current Rating (Max): Must equal or exceed 2A
- DC Resistance (Max): Must not exceed 50mOhm to maintain thermal and insertion loss characteristics
- Operating Temperature: Must span -55°C to 125°C minimum
- Filter Type: Power Line classification preferred for application alignment
Parts are grouped into two categories:
Direct Equivalents maintain all primary and secondary parameters within specified tolerances, ensuring drop-in replacement capability.
Parametric Equivalents match primary criteria but may vary in current rating, DC resistance, or filter type classification. These parts are suitable for applications where the design margin permits higher current capacity or lower resistance values.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Impedance @ 100 MHz | Current Rating (Max) | DC Resistance (Max) | Operating Temperature | Filter Type | Product Status | Packaging |
|---|---|---|---|---|---|---|---|---|
| CIC31P151NE | Samsung Electro-Mechanics | 150 Ohms | 2A | 50mOhm | -55°C ~ 125°C | Power Line | Obsolete | Cut Tape (CT) & Digi-Reel® |
| BBPY00321611151Y00 | Pulse Electronics | 150 Ohms | 2A | 40mOhm | -55°C ~ 125°C | Power Line | Active | Tape & Reel (TR) |
| FBH321611T-151Y-S | Cal-Chip Electronics, Inc. | 150 Ohms | 3A | 50mOhm | -55°C ~ 125°C | Power Line | Active | Tape & Reel (TR) |
| LI1206H151R-10 | Laird-Signal Integrity Products | 150 Ohms | 1A | 150mOhm | -40°C ~ 125°C | Power, Signal Line | Active | Tape & Reel (TR) |
| 2512061517Y3 | Fair-Rite Products Corp. | 150 Ohms | 3A | 50mOhm | -55°C ~ 125°C | Signal Line | Active | Tape & Reel (TR) |
| 742792113 | Würth Elektronik | 120 Ohms | 3A | 30mOhm | -55°C ~ 125°C | Signal Line | Active | Cut Tape (CT) & Digi-Reel® |
| BBPY00321611121Y00 | Pulse Electronics | 120 Ohms | 3A | 30mOhm | -55°C ~ 125°C | Power Line | Active | Tape & Reel (TR) |
| BLM31PG121SN1L | Murata Electronics | 120 Ohms | 3.5A | 20mOhm | -55°C ~ 125°C | Power Line | Active | Cut Tape (CT) & Digi-Reel® |
| FBH321611T-121Y-S | Cal-Chip Electronics, Inc. | 120 Ohms | 3A | 50mOhm | -55°C ~ 125°C | Power Line | Active | Tape & Reel (TR) |
| HCB20-121-RC | Allied Components International | 120 Ohms | 2.5A | 30mOhm | -55°C ~ 125°C | Power Line | Active | Tape & Reel (TR) |
| FBH321611T-181Y-S | Cal-Chip Electronics, Inc. | 180 Ohms | 3A | 50mOhm | -55°C ~ 125°C | Power Line | Active | Tape & Reel (TR) |
Engineering Selection Recommendations
Direct Replacement (150 Ohm @ 100 MHz, 2A Minimum):
BBPY00321611151Y00 (Pulse Electronics) is the primary direct equivalent. This part maintains 150 Ohm impedance at 100 MHz, 2A current rating, and -55°C to 125°C operating temperature range. DC resistance is 40mOhm, which is lower than the original 50mOhm specification, providing improved thermal performance. Product status is active with established supply chain availability (1124 pcs in stock). RoHS3 compliance and REACH unaffected status match the original part.
Enhanced Current Capacity Alternatives (150 Ohm @ 100 MHz):
FBH321611T-151Y-S (Cal-Chip Electronics, Inc.) provides 150 Ohm impedance with increased current rating of 3A and maintains 50mOhm DC resistance. Operating temperature range and compliance certifications align with the original specification. This part is suitable for applications requiring design margin above the 2A minimum requirement.
2512061517Y3 (Fair-Rite Products Corp.) offers 150 Ohm impedance with 3A current capacity and 50mOhm DC resistance. Operating temperature range spans -55°C to 125°C. Filter type is classified as Signal Line rather than Power Line; this part is suitable for signal integrity applications where the 150 Ohm impedance is required.
Lower Impedance Alternatives (120 Ohm @ 100 MHz):
Parts with 120 Ohm impedance at 100 MHz represent a parametric deviation from the original specification. These alternatives are applicable only when circuit design permits impedance tolerance or when lower impedance is beneficial for the application.
BLM31PG121SN1L (Murata Electronics) provides 120 Ohm impedance with superior current capacity (3.5A) and lowest DC resistance (20mOhm) among available options. Operating temperature and compliance certifications are equivalent to the original part.
FBH321611T-121Y-S (Cal-Chip Electronics, Inc.) offers 120 Ohm impedance with 3A current rating and 50mOhm DC resistance, matching the original DC resistance specification.
HCB20-121-RC (Allied Components International) provides 120 Ohm impedance with 2.5A current rating and 30mOhm DC resistance.
BBPY00321611121Y00 (Pulse Electronics) offers 120 Ohm impedance with 3A current rating and 30mOhm DC resistance.
Higher Impedance Alternative (180 Ohm @ 100 MHz):
FBH321611T-181Y-S (Cal-Chip Electronics, Inc.) provides 180 Ohm impedance at 100 MHz with 3A current rating and 50mOhm DC resistance. This part is applicable only when circuit design requires higher impedance filtering.
Constrained Current Application (150 Ohm @ 100 MHz, 1A):
LI1206H151R-10 (Laird-Signal Integrity Products) maintains 150 Ohm impedance but is limited to 1A maximum current rating. DC resistance is 150mOhm, significantly higher than the original specification. Operating temperature minimum is -40°C, which does not meet the full -55°C lower bound. This part is suitable only for applications with current requirements below 1A and operating temperature above -40°C.
All substitute parts maintain 1206 (3216 Metric) package compatibility, surface mount mounting type, and single-line configuration. RoHS3 compliance and REACH unaffected status are consistent across all active alternatives.
Frequently Asked Questions (FAQ)
Q: Can BBPY00321611151Y00 be used as a direct replacement for CIC31P151NE?
A: Yes. BBPY00321611151Y00 maintains the critical parameters: 150 Ohm impedance at 100 MHz, 2A current rating, 1206 package, and -55°C to 125°C operating temperature. The 40mOhm DC resistance is lower than the original 50mOhm, which improves thermal performance. Product status is active with established supply availability.
Q: What is the difference between 150 Ohm and 120 Ohm ferrite beads in this package?
A: Impedance at 100 MHz determines the frequency response and filtering characteristics. The 150 Ohm specification provides higher impedance filtering compared to 120 Ohm alternatives. Selection between these values depends on circuit design requirements for attenuation at the target frequency. A 120 Ohm part cannot be substituted for a 150 Ohm requirement without circuit analysis.
Q: Why does LI1206H151R-10 have higher DC resistance (150mOhm) compared to other 150 Ohm options?
A: DC resistance varies based on ferrite material composition and core design. LI1206H151R-10 is classified as a Power, Signal Line bead with 1A current rating, resulting in different core geometry and material selection compared to higher current-rated parts. The elevated DC resistance increases insertion loss and heat generation at rated current.
Q: Can FBH321611T-181Y-S (180 Ohm) be used instead of CIC31P151NE (150 Ohm)?
A: No, without circuit analysis. The 180 Ohm impedance provides different frequency response and attenuation characteristics than the 150 Ohm specification. Substitution is only valid if the circuit design permits impedance variation or if higher impedance filtering is beneficial.
Q: What is the significance of Filter Type classification (Power Line vs. Signal Line)?
A: Filter Type indicates the primary application category. Power Line beads are optimized for power supply filtering with emphasis on current capacity and low DC resistance. Signal Line beads are optimized for signal integrity with different core material characteristics. Parts with matching Filter Type classification are preferred for equivalent functionality.
Q: Are all substitute parts RoHS3 compliant?
A: All active substitute parts listed are RoHS3 compliant. The original CIC31P151NE is also RoHS3 compliant. REACH status is unaffected for all parts except HCB20-121-RC, where REACH information is available upon request.
Q: What packaging options are available for these ferrite beads?
A: Substitute parts are available in two packaging formats: Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). Both formats are suitable for automated assembly. Selection depends on production volume and handling equipment compatibility. The original CIC31P151NE uses Cut Tape & Digi-Reel® packaging.
Q: Can a 3A-rated part be used in a 2A application?
A: Yes. A higher current-rated part operates within safe margins in a lower current application. Parts such as FBH321611T-151Y-S (3A) and 2512061517Y3 (3A) are suitable for 2A applications. The higher current rating provides design margin and does not degrade performance at lower current levels.
Q: What is the impact of lower DC resistance on thermal performance?
A: Lower DC resistance reduces resistive heating (I²R losses) at rated current. BBPY00321611151Y00 (40mOhm) and BLM31PG121SN1L (20mOhm) generate less heat than the original CIC31P151NE (50mOhm) at equivalent current levels. This improves thermal stability and extends component life in thermally constrained applications.
Q: Is the operating temperature range -40°C to 125°C acceptable for applications requiring -55°C operation?
A: No. If the application requires operation at -55°C, parts with operating temperature range of -40°C to 125°C (such as LI1206H151R-10) do not meet the specification. The full -55°C to 125°C range must be maintained for compliance with the original design requirements.
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