C3VFSE7 VCXO Oscillator Equivalent & Substitute Parts

Part Overview

The C3VFSE7 is a 311.04 MHz VCXO (Voltage Controlled Crystal Oscillator) manufactured by Cardinal Components Inc., designed for PECL output applications with 3.3V supply and enable/disable functionality. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations.

The primary reason for identifying substitute parts is the obsolete status of the C3VFSE7. Active equivalent models provide continued availability, improved lead times, and access to current manufacturing processes while maintaining electrical and mechanical compatibility with existing designs.

Substiute Parts

C3VFSE7

Cardinal Components Inc.In Stock: 1112C3VFSE7 Datasheet

Current PartRFQ

XLP73V311.040000I

Renesas Electronics CorporationIn Stock: 683XLP73V311.040000I Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the C3VFSE7 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Mandatory Matching Parameters:

• Frequency: 311.04 MHz (exact match required)
• Package Type: 6-SMD, No Lead (physical compatibility)
• Mounting Type: Surface Mount (PCB integration)
• Supply Voltage: 3.3V (electrical compatibility)
• Function: Enable/Disable (operational requirement)

Compatible Variation Parameters:

• Output Type: PECL to LVPECL (signal level compatibility within 3.3V systems)
• Frequency Stability: ±30ppm or tighter (performance enhancement acceptable)
• Operating Temperature: Extended ranges acceptable (design margin improvement)
• Current Supply: Values at or below 120mA (power budget compatibility)

The XLP73V311.040000I from Renesas Electronics Corporation qualifies as a substitute based on matching all mandatory parameters while offering improved specifications in frequency stability range and extended operating temperature coverage.

Parameter Comparison

Engineering Selection Recommendations

C3VFSE7 (Cardinal Components Inc.):

• Product Status: Obsolete
• Suitable for: Legacy system maintenance and repair where existing inventory is available
• Limitation: No new production; future availability uncertain

XLP73V311.040000I (Renesas Electronics Corporation):

• Product Status: Active
• Compliance: RoHS3 Compliant
• Certifications: REACH Unaffected, EAR99 classification
• Suitable for: New designs, system upgrades, and long-term production support
• Advantages: Extended operating temperature range (-40°C to 85°C), lower profile (1.40mm vs 2.00mm), active production status ensuring supply chain continuity

For applications requiring immediate component sourcing or new product development, the XLP73V311.040000I is the recommended selection based on active product status and regulatory compliance. The LVPECL output is fully compatible with 3.3V PECL-based systems and provides equivalent signal integrity for this frequency range.

Frequently Asked Questions (FAQ)

Q: Can the XLP73V311.040000I directly replace the C3VFSE7 on existing PCBs?

A: Yes, with minor layout considerations. Both components use identical 6-SMD, No Lead packages. The Renesas part has slightly larger footprint dimensions (7.50mm x 5.20mm vs 7.00mm x 5.00mm) and lower height (1.40mm vs 2.00mm). Verify PCB layout spacing allows the minimal dimensional increase. Signal compatibility is maintained through LVPECL output at 3.3V supply.

Q: What is the difference between PECL and LVPECL outputs?

A: PECL (Positive Emitter Coupled Logic) and LVPECL (Low Voltage PECL) are signal level standards. LVPECL operates at lower voltage swings optimized for 3.3V systems, while PECL traditionally uses 5V supplies. At 3.3V supply voltage, LVPECL output from the Renesas part provides equivalent signal integrity and is fully compatible with PECL-based receiver circuits designed for 3.3V operation.

Q: Does the extended operating temperature range of the Renesas part affect compatibility?

A: No. The XLP73V311.040000I operating range of -40°C to 85°C encompasses the C3VFSE7 range of -10°C to 85°C. Extended temperature capability provides design margin and is not a compatibility concern. Use the Renesas part specification for system thermal analysis.

Q: Are there any supply chain or lead time advantages to using the XLP73V311.040000I?

A: Yes. The Renesas part is in active production status with current inventory availability (659 pcs reported in stock). The C3VFSE7 is obsolete with no new production. For production quantities or long-term support, the Renesas part ensures supply continuity and predictable lead times.

Q: What compliance certifications apply to the substitute part?

A: The XLP73V311.040000I carries RoHS3 Compliance certification and REACH Unaffected status, matching the C3VFSE7 regulatory classification. Both parts are classified as EAR99 for export control purposes and use identical HTSUS commodity code 8542.39.0001.