TE Connectivity AMP Connectors 330876 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 330876 is a BNC connector plug designed for 50-ohm coaxial cable applications. This component functions as a male pin connector with crimp termination for the center contact and shield, suitable for free-hanging (in-line) installations. The part is classified as obsolete, necessitating identification of equivalent alternatives for ongoing system maintenance and new procurement requirements. Substitute parts must maintain electrical compatibility at 50 ohms impedance and mechanical compatibility with the specified cable groups while meeting current manufacturing and compliance standards.

Substiute Parts

330876

TE Connectivity AMP ConnectorsIn Stock: 946330876 Datasheet

Current PartRFQ

031-5998-RFX

Amphenol RFIn Stock: 1240031-5998-RFX Datasheet

SimilarRFQ

031-5999-RFX

Amphenol RFIn Stock: 756031-5999-RFX Datasheet

SimilarRFQ

31-5556-RFX

Amphenol RFIn Stock: 106231-5556-RFX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 330876 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Compatibility Criteria:

• Connector style: BNC
• Connector type: Plug, Male Pin
• Impedance: 50 Ohms
• Fastening type: Bayonet Lock
• Mounting type: Free Hanging (In-Line)
• Number of ports: 1

Termination Compatibility:

• Contact termination: Crimp (primary requirement)
• Shield termination: Crimp (primary requirement)

Electrical Performance:

• Voltage rating: 500 V (minimum)
• Insertion loss: 0.2 dB (standard performance)
• Mating cycles: 500 (minimum)

Environmental Specifications:

• Operating temperature range must encompass or exceed -55°C ~ 85°C
• Moisture sensitivity level: 1 (Unlimited)

Substitute parts 031-5998-RFX and 031-5999-RFX meet all primary compatibility criteria with enhanced frequency performance (4 GHz) and extended operating temperature ranges. Part 31-5556-RFX provides substitution with alternative contact termination (Push On) for applications where crimp termination is not required, though this represents a functional variation rather than a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

For Direct Equivalent Replacement (Crimp Termination Required):

The Amphenol RF 031-5999-RFX is the primary substitute for the TE Connectivity 330876. This part maintains identical electrical specifications (50 ohms, 500 V, 0.2 dB insertion loss) and mechanical compatibility (BNC plug, male pin, bayonet lock, free-hanging mount). The 031-5999-RFX is classified as Active product status, ensuring ongoing availability and manufacturing support. It achieves ROHS3 compliance, addressing regulatory requirements that the obsolete 330876 does not meet. The extended operating temperature range (-65°C ~ 165°C) provides superior thermal performance compared to the original part. Cable group compatibility includes RG-8, 8A, 9, 9A, 9B, 87, 213, 214, 225, 302, and 393.

For Extended Frequency Applications:

Both Amphenol RF substitutes (031-5998-RFX and 031-5999-RFX) support 4 GHz maximum frequency, doubling the capability of the original 330876 (2.5 GHz). The 031-5998-RFX is classified as Not For New Designs but remains available with 1195 units in stock. This part accommodates Belden 9913, 9914, and LMR-400 cable groups. Selection between 031-5998-RFX and 031-5999-RFX depends on cable group requirements and long-term availability considerations.

For Alternative Termination Methods:

The Amphenol RF 31-5556-RFX provides substitution with push-on contact termination instead of crimp. This part is classified as Active and ROHS3 compliant. Push-on termination eliminates the requirement for crimp tooling and is compatible with RG-59, 59B, 62, 140, 210, and Belden 8241, 8263, 8279, 9209 cable groups. Selection of this alternative is appropriate only when push-on termination meets application requirements and cable compatibility is confirmed.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 031-5999-RFX directly replace the TE Connectivity 330876 in existing installations?

A: Yes. Both parts maintain 50-ohm impedance, identical voltage rating (500 V), matching insertion loss (0.2 dB), and equivalent mating cycle ratings (500). The BNC plug connector style, male pin configuration, bayonet lock fastening, and free-hanging mounting are identical. The 031-5999-RFX supports the full operating temperature range of the original part and extends it further (-65°C ~ 165°C versus -55°C ~ 85°C). Cable group compatibility must be verified for specific applications.

Q: What is the difference between the 031-5998-RFX and 031-5999-RFX substitutes?

A: Both parts are electrically and mechanically equivalent with identical impedance, voltage rating, frequency performance (4 GHz), and operating temperature range. The primary difference is product status: 031-5999-RFX is Active, while 031-5998-RFX is Not For New Designs. Cable group compatibility differs: 031-5999-RFX supports RG-8, 8A, 9, 9A, 9B, 87, 213, 214, 225, 302, 393; 031-5998-RFX supports Belden 9913, 9914, LMR-400. For new designs, 031-5999-RFX is the preferred selection.

Q: Why does the 31-5556-RFX have different contact termination (Push On versus Crimp)?

A: The 31-5556-RFX uses push-on contact termination instead of crimp termination. This represents a functional variation rather than a direct equivalent. Push-on termination does not require crimp tooling and is suitable for applications where this assembly method is preferred. However, this part is compatible with different cable groups (RG-59, 59B, 62, 140, 210, Belden 8241, 8263, 8279, 9209) than the original 330876. Selection requires confirmation that push-on termination meets application requirements and that cable compatibility is established.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three Amphenol RF substitutes (031-5998-RFX, 031-5999-RFX, and 31-5556-RFX) are ROHS3 compliant. The original TE Connectivity 330876 is RoHS non-compliant. This compliance improvement is a significant advantage for applications subject to RoHS regulations and environmental standards.

Q: What cable groups are compatible with each substitute part?

A: The 031-5999-RFX (recommended primary substitute) is compatible with RG-8, 8A, 9, 9A, 9B, 87, 213, 214, 225, 302, and 393 cable groups. The 031-5998-RFX supports Belden 9913, 9914, and LMR-400. The 31-5556-RFX (push-on termination) supports RG-59, 59B, 62, 140, 210, and Belden 8241, 8263, 8279, 9209. The original 330876 is compatible with RG-178 and 196. Cable group compatibility must be verified for specific applications to ensure proper mechanical fit and electrical performance.

Q: What is the significance of the frequency difference (2.5 GHz versus 4 GHz)?

A: The original 330876 operates at a maximum frequency of 2.5 GHz, while all Amphenol RF substitutes support 4 GHz. This represents enhanced frequency performance capability. For applications operating below 2.5 GHz, this difference is not significant. For applications requiring frequencies between 2.5 GHz and 4 GHz, the substitute parts provide necessary performance headroom. Existing applications operating within the 2.5 GHz specification are not negatively affected by substitution with higher-frequency-rated parts.

Q: Are there inventory considerations for selecting between substitute parts?

A: Current inventory levels are: 031-5999-RFX (733 units), 031-5998-RFX (1195 units), and 31-5556-RFX (1038 units). The 031-5999-RFX, despite lower inventory, is the recommended primary substitute due to Active product status and superior long-term availability assurance. The 031-5998-RFX has higher current inventory but is classified as Not For New Designs, indicating potential future discontinuation. Inventory levels should be considered in conjunction with product status and application requirements.