HRM-403S(40) Equivalent & Substitute Parts

Part Overview

The HRM-403S(40) is an SMA connector plug with male pin configuration, rated for 50 ohms impedance, designed for panel mount solder termination applications. This coaxial RF connector operates across frequencies up to 12.4 GHz and is manufactured by Hirose Electric Co Ltd as part of the HRM series.

The HRM-403S(40) is currently listed as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this connector specification.

Key Parameters

Parameter	Value
Connector Style	SMA
Connector Type	Plug, Male Pin
Impedance	50 Ohms
Contact Termination	Solder
Shield Termination	Solder
Mounting Type	Panel Mount
Mounting Feature	Flange
Fastening Type	Threaded
Frequency - Max	12.4 GHz
Operating Temperature Range	-55°C to 125°C
Center Contact Material	Brass
Center Contact Plating	Gold
Body Material	Stainless Steel
Dielectric Material	Polytetrafluoroethylene (PTFE)
Mating Cycles	1000
Insertion Loss	0.1 dB
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the HRM-403S(40) are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The following parameters must match identically for substitution eligibility:

Connector Style: SMA
Connector Type: Plug, Male Pin
Impedance: 50 Ohms
Contact Termination: Solder
Shield Termination: Solder
Mounting Type: Panel Mount
Mounting Feature: Flange
Fastening Type: Threaded
Frequency - Max: 12.4 GHz
Operating Temperature Range: -55°C to 125°C
Center Contact Material: Brass
Center Contact Plating: Gold
Body Material: Stainless Steel
Dielectric Material: PTFE
Mating Cycles: 1000
Insertion Loss: 0.1 dB
RoHS Compliance: Yes

The substitute parts HRM-402S(40) and HRM-406S(40) meet all these criteria and are therefore electrically and mechanically interchangeable with the HRM-403S(40).

Parameter Comparison

Parameter	HRM-403S(40)	HRM-402S(40)	HRM-406S(40)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Connector Style	SMA	SMA	SMA
Connector Type	Plug, Male Pin	Plug, Male Pin	Plug, Male Pin
Impedance	50 Ohms	50 Ohms	50 Ohms
Contact Termination	Solder	Solder	Solder
Shield Termination	Solder	Solder	Solder
Mounting Type	Panel Mount	Panel Mount	Panel Mount
Mounting Feature	Flange	Flange	Flange
Fastening Type	Threaded	Threaded	Threaded
Frequency - Max	12.4 GHz	12.4 GHz	12.4 GHz
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Center Contact Material	Brass	Brass	Brass
Center Contact Plating	Gold	Gold	Gold
Body Material	Stainless Steel	Stainless Steel	Stainless Steel
Dielectric Material	PTFE	PTFE	PTFE
Mating Cycles	1000	1000	1000
Insertion Loss	0.1 dB	0.1 dB	0.1 dB
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Last Time Buy	Active

Engineering Selection Recommendations

For applications currently using the HRM-403S(40), the HRM-406S(40) is the primary substitute selection. This part maintains active product status with Hirose Electric Co Ltd, ensuring ongoing availability and supply chain stability. All electrical and mechanical parameters are identical to the HRM-403S(40), providing direct functional equivalence.

The HRM-402S(40) is a secondary substitute option. While parametrically equivalent, this part is designated as Last Time Buy, indicating limited future availability. Selection of HRM-402S(40) should be considered only when HRM-406S(40) is unavailable.

Both substitute parts carry RoHS compliance certification and MSL Level 1 rating, matching the compliance profile of the original HRM-403S(40). No additional qualification or testing is required for substitution based on the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can HRM-402S(40) and HRM-406S(40) be used interchangeably with HRM-403S(40)?

A: Yes. Both parts are parametrically equivalent across all electrical and mechanical specifications, including impedance, frequency rating, termination method, and operating temperature range. Direct substitution is supported.

Q: What is the difference between the three parts?

A: The three parts are electrically and mechanically identical. The only difference is product status: HRM-403S(40) is obsolete, HRM-402S(40) is Last Time Buy, and HRM-406S(40) is active. For new designs or ongoing production, HRM-406S(40) is recommended due to its active status.

Q: Why is HRM-403S(40) listed as obsolete?

A: Obsolescence is a manufacturer lifecycle designation. The HRM-406S(40) serves as the current active equivalent within the HRM series, providing the same functionality with assured long-term availability.

Q: Are there packaging differences between these parts?

A: The HRM-403S(40) packaging is listed as unspecified. Both HRM-402S(40) and HRM-406S(40) are supplied in bulk packaging. Confirm packaging requirements with your procurement process.

Q: Do these connectors require any special handling or storage?

A: All three parts carry MSL Level 1 rating, indicating unlimited shelf life with no moisture sensitivity restrictions. Standard component storage practices apply.

Q: What is the maximum frequency these connectors support?

A: All three parts are rated to 12.4 GHz maximum frequency, suitable for RF applications within this bandwidth specification.

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