Amphenol RF 222157-12 Coaxial Connector Adapter - Equivalent & Substitute Parts

Part Overview

The Amphenol RF 222157-12 is a 75-ohm coaxial connector adapter designed for F-series connections. This adapter converts an F Jack (female socket) to an F Plug (male pin) configuration in a straight, free-hanging in-line mounting style. The part is classified as "Not For New Designs," indicating it has been superseded or is in legacy status. Finding equivalent substitute parts is necessary for applications requiring active product support, improved availability, or design flexibility while maintaining identical electrical and mechanical specifications.

Substiute Parts

222157-12

Amphenol RFIn Stock: 713222157-12 Datasheet

Current PartRFQ

222157

Amphenol RFIn Stock: 1302222157 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Amphenol RF 222157-12 is determined by the following critical parameters:

Electrical Compatibility:

• Impedance: 75 Ohms (must match exactly)
• Frequency maximum: 2 GHz or higher
• Center contact plating: Tin
• Dielectric material: Polyoxymethylene (POM) Acetal or Polypropylene (PP)

Mechanical Compatibility:

• Adapter series: F to F (same connector type)
• Center gender configuration: Female to Male
• Style: Straight orientation
• Mounting type: Free Hanging (In-Line)
• Fastening type: Snap-On, Threaded
• Body material: Brass with Nickel finish

Regulatory & Environmental:

• RoHS3 Compliance required
• Operating temperature range: -55°C ~ 85°C
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts must satisfy all electrical and mechanical parameters listed above. The primary distinction between the main part and substitute candidates is the adapter direction (Jack-to-Plug versus Plug-to-Jack) and product status classification.

Parameter Comparison

Engineering Selection Recommendations

Substitute Part 222157 (Amphenol RF):

The Amphenol RF 222157 is functionally equivalent to the 222157-12 with respect to all critical electrical and mechanical parameters. Both parts maintain identical impedance (75 Ohms), frequency rating (2 GHz maximum), connector series (F to F), and operating temperature specifications (-55°C ~ 85°C). Both are ROHS3 compliant and REACH affected.

The primary distinction is that part 222157 has an "Active" product status, whereas 222157-12 is designated "Not For New Designs." This status difference indicates that 222157 receives ongoing manufacturer support and is recommended for new circuit designs and long-term applications.

The adapter direction is reversed between the two parts: 222157-12 converts F Jack to F Plug, while 222157 converts F Plug to F Jack. This reversal is functionally equivalent in applications where either adapter orientation can be accommodated by the circuit topology.

Packaging differs between the parts (Bulk for 222157-12 versus Bag for 222157), which may affect procurement and inventory management but does not impact electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 222157 directly replace the 222157-12 in my application?

A: The 222157 is electrically and mechanically equivalent to the 222157-12 for all critical parameters including impedance, frequency rating, connector series, and operating temperature. However, the adapter direction is reversed: 222157-12 converts F Jack to F Plug, while 222157 converts F Plug to F Jack. Substitution is valid only if your circuit topology can accommodate the reversed adapter orientation.

Q: Why is the 222157-12 marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's product line. The 222157 is the active equivalent. For new circuit designs, the 222157 is the recommended selection due to ongoing manufacturer support and availability.

Q: Are there any compliance differences between 222157-12 and 222157?

A: Both parts are ROHS3 compliant, REACH affected, and classified under ECCN EAR99. Compliance status is identical between the two parts.

Q: Does packaging affect the electrical performance of these adapters?

A: No. The packaging difference (Bulk versus Bag) is a logistics and inventory consideration only. It does not affect electrical characteristics, mechanical fit, or performance specifications.

Q: What are the critical parameters that must match for substitution?

A: Impedance (75 Ohms), frequency rating (2 GHz), adapter series (F to F), center gender configuration (Female to Male), style (Straight), mounting type (Free Hanging In-Line), fastening type (Snap-On, Threaded), and operating temperature range (-55°C ~ 85°C) must all match exactly. The adapter direction may be reversed if circuit topology permits.

Q: Can I use the 222157 in applications originally designed for the 222157-12?

A: Yes, provided the reversed adapter direction (Plug-to-Jack instead of Jack-to-Plug) is compatible with your circuit connections. All electrical and mechanical specifications are identical.