Amphenol RF 908-21100 MMCX Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 908-21100 is an MMCX connector plug with male pin configuration, designed for 50 Ohm board edge, cutout surface mount applications. This component operates at frequencies up to 6 GHz and utilizes solder termination for both contact and shield. The part is currently in active production status with 984 pieces available in inventory.

Substitute parts become necessary when the primary part number reaches end-of-life status, when inventory constraints require alternative sourcing, or when design flexibility permits selection from multiple qualified manufacturers meeting identical electrical and mechanical specifications.

Substiute Parts

908-21100

Amphenol RFIn Stock: 1006908-21100 Datasheet

Current PartRFQ

262106

Amphenol RFIn Stock: 1174262106 Datasheet

Parametric EquivalentRFQ

1408120-1

TE Connectivity AMP ConnectorsIn Stock: 11461408120-1 Datasheet

DirectRFQ

0734150991

MolexIn Stock: 50130734150991 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for MMCX connector plugs is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: MMCX
• Connector Type: Plug, Male Pin
• Impedance: 50 Ohms
• Mounting Type: Board Edge, Cutout; Surface Mount
• Contact Termination: Solder
• Shield Termination: Solder
• Fastening Type: Snap-On
• Frequency - Max: 6 GHz
• Number of Ports: 1
• Mating Cycles: 500
• Center Contact Material: Brass
• Body Material: Brass
• Dielectric Material: PTFE
• Housing Color: Gold

All substitute parts listed below meet these mandatory parameters. Variations in packaging type (Bulk versus Bag), manufacturer identity, and optional parameters such as operating temperature range do not affect functional interchangeability in applications where the core electrical and mechanical specifications are satisfied.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: Amphenol RF 908-21100

The Amphenol RF 908-21100 is the specified part number and remains the preferred choice. Active product status, current inventory availability, and ROHS3 compliance support continued use in new designs and production runs.

Parametric Equivalent: Amphenol RF 262106

The 262106 is functionally equivalent to the 908-21100 across all critical electrical and mechanical parameters. Both parts are manufactured by Amphenol RF and maintain active product status. The primary difference is packaging format (Bag versus Bulk). This substitute is suitable for applications where packaging type does not impose constraints. Inventory availability is comparable at 1065 pieces.

Parametric Equivalent: Molex 0734150991

The Molex 0734150991 meets all mandatory substitution criteria and is classified as a parametric equivalent. This part carries active product status and offers the highest current inventory level at 4967 pieces. The part is REACH Unaffected, which may provide regulatory advantages in certain supply chain contexts. Operating temperature range extends to 165°C, exceeding the TE Connectivity alternative. This substitute is suitable for direct replacement in applications where cross-manufacturer qualification is permitted.

Obsolete Alternative: TE Connectivity 1408120-1

The TE Connectivity 1408120-1 is electrically and mechanically equivalent but carries obsolete product status. This part should not be selected for new designs or long-term production commitments. Use of this part number is limited to legacy system maintenance or repair applications where existing inventory must be consumed. Operating temperature range is -55°C to 155°C.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 262106 be used as a direct replacement for the 908-21100?

A: Yes. Both parts are manufactured by Amphenol RF and share identical electrical and mechanical specifications across all critical parameters including connector style, impedance, mounting type, termination method, and frequency rating. The only difference is packaging format (Bag versus Bulk), which does not affect functional performance.

Q: What is the difference between the Molex 0734150991 and the Amphenol RF 908-21100?

A: The parts are electrically and mechanically equivalent. Both operate at 50 Ohms impedance, support 6 GHz maximum frequency, and utilize identical mounting and termination methods. The Molex part is manufactured by a different supplier and carries active product status with higher inventory availability. Operating temperature range for the Molex part extends to 165°C compared to unspecified range for the Amphenol part.

Q: Why is the TE Connectivity 1408120-1 listed as obsolete?

A: The TE Connectivity 1408120-1 carries obsolete product status, indicating that the manufacturer has discontinued active production and support. This part should not be selected for new designs. Existing inventory may be used for legacy system maintenance only.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed, including the primary 908-21100 and all substitutes, are ROHS3 compliant. This compliance status applies uniformly across the entire group.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life with no moisture sensitivity constraints. All parts in this group carry MSL 1 classification, meaning they do not require special moisture control during storage or handling.

Q: Can the Molex 0734150991 be used in applications requiring REACH compliance?

A: The Molex 0734150991 is classified as REACH Unaffected, which indicates it does not contain substances of very high concern (SVHC) listed under REACH regulations. The Amphenol RF parts (908-21100 and 262106) are classified as REACH Affected. Selection between these options depends on specific supply chain and regulatory requirements.

Q: What is the difference between Bulk and Bag packaging?

A: Bulk packaging typically refers to larger quantity containers suitable for high-volume manufacturing operations. Bag packaging refers to smaller quantity containers. Both packaging formats contain identical components with no functional differences. Selection depends on production volume requirements and inventory management practices.

Q: Are all parts rated for 500 mating cycles?

A: Yes. All parts in this group, including the primary 908-21100 and all substitutes, are rated for 500 mating cycles, indicating equivalent mechanical durability and connector life expectancy.

Q: What voltage rating applies to the Amphenol RF 908-21100?

A: The voltage rating for the 908-21100 is not specified in the provided documentation. The substitute parts carry a 170 V rating. For applications requiring confirmed voltage specifications, the Amphenol RF 262106, TE Connectivity 1408120-1, or Molex 0734150991 provide explicit 170 V ratings.