MDF97-5S-3.5C Equivalent & Substitute Parts

Part Overview

The MDF97-5S-3.5C is a 5-position rectangular connector receptacle housing manufactured by Hirose Electric Co Ltd. This connector features a 0.138" (3.50mm) pitch, female socket contact type, and free-hanging in-line mounting configuration. The part is actively produced and maintains full RoHS3 compliance with REACH unaffected status. Equivalent and substitute parts are identified based on matching electrical and mechanical specifications to support design flexibility, supply chain alternatives, and component availability across manufacturing environments.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	5
Pitch	0.138" (3.50mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Operating Temperature Range	-40°C ~ 105°C
Insulation Material	Polybutylene Terephthalate (PBT)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MDF97-5S-3.5C are identified based on strict equivalence across the following critical parameters: connector type (receptacle), contact type (female socket), number of positions (5), pitch (0.138" / 3.50mm), number of rows (1), mounting type (free hanging in-line), and contact termination (crimp). All substitute parts maintain RoHS3 compliance and MSL 1 rating.

Substitutes are grouped into three categories based on secondary characteristics:

Category 1: Molex MX150 Series (0334710501, 0334710502, 0334710506, 0334710537, 0334710538, 0334710539, 0334710540) — These parts feature latch holder fastening, polyester insulation material, and extended operating temperature range (-40°C ~ 125°C). Color variants include black and gray housings. These parts are supplied as housings without contacts included.

Category 2: Molex 51067 Series (0510670500) — This part features latch lock fastening, polybutylene terephthalate (PBT) insulation material matching the main part, and operating temperature range of -40°C ~ 105°C. Natural color housing. Supplied as housing without contacts included.

Category 3: Molex Ultra-Fit 172256 Series (1722563105, 1722564105) — These parts feature latch lock fastening, polyamide (PA) nylon insulation material, operating temperature range of -40°C ~ 105°C, and include glow wire compliance and terminal position lock (TPA) features. Color variants include black and natural housings. Supplied as housings without contacts included.

Parameter Comparison

Part Number	Manufacturer	Series	Connector Type	Contact Type	Positions	Pitch	Mounting Type	Termination	Color	Insulation Material	Operating Temp	Fastening Type	RoHS3
MDF97-5S-3.5C	Hirose Electric Co Ltd	MDF97	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Black	PBT	-40°C ~ 105°C	—	Yes
0334710501	Molex	MX150 33471	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Black	Polyester	-40°C ~ 125°C	Latch Holder	Yes
0334710502	Molex	MX150 33471	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Gray	Polyester	-40°C ~ 125°C	Latch Holder	Yes
0334710506	Molex	MX150 33471	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Black	Polyester	-40°C ~ 125°C	Latch Holder	Yes
0334710537	Molex	MX150 33471	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Gray	Polyester	-40°C ~ 125°C	Latch Holder	Yes
0334710538	Molex	MX150 33471	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Gray	Polyester	-40°C ~ 125°C	Latch Holder	Yes
0334710539	Molex	MX150 33471	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Gray	Polyester	-40°C ~ 125°C	Latch Holder	Yes
0334710540	Molex	MX150 33471	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Gray	Polyester	-40°C ~ 125°C	Latch Holder	Yes
0510670500	Molex	51067	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Natural	PBT	-40°C ~ 105°C	Latch Lock	Yes
1722563105	Molex	Ultra-Fit 172256	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Black	PA, Nylon	-40°C ~ 105°C	Latch Lock	Yes
1722564105	Molex	Ultra-Fit 172256	Receptacle	Female Socket	5	0.138" (3.50mm)	Free Hanging (In-Line)	Crimp	Natural	PA, Nylon	-40°C ~ 105°C	Latch Lock	Yes

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance with MSL 1 rating, ensuring regulatory equivalence to the MDF97-5S-3.5C.

For applications requiring identical insulation material and operating temperature specifications: Select part 0510670500 (Molex 51067 series). This part matches the PBT insulation material and -40°C ~ 105°C operating temperature range of the main part while providing latch lock fastening and natural color housing.

For applications requiring identical insulation material, operating temperature, and black color: Select part 1722563105 (Molex Ultra-Fit 172256 series). This part matches PBT-equivalent polyamide nylon insulation, -40°C ~ 105°C operating temperature, and black housing while providing latch lock fastening with terminal position lock (TPA) and glow wire compliance features.

For applications requiring extended operating temperature range (-40°C ~ 125°C): Select from the Molex MX150 33471 series (parts 0334710501, 0334710502, 0334710506, 0334710537, 0334710538, 0334710539, 0334710540). These parts feature polyester insulation and latch holder fastening. Color selection includes black (0334710501, 0334710506) and gray (0334710502, 0334710537, 0334710538, 0334710539, 0334710540) options.

For applications requiring natural color housing with matching operating temperature: Select part 1722564105 (Molex Ultra-Fit 172256 series). This part provides natural color housing, polyamide nylon insulation, -40°C ~ 105°C operating temperature, latch lock fastening, and terminal position lock (TPA) with glow wire compliance.

All substitute parts are supplied as housings without contacts included. Contact compatibility must be verified separately based on application requirements.

Frequently Asked Questions (FAQ)

Q: What are the critical parameters that determine substitutability for the MDF97-5S-3.5C?

A: The critical parameters are connector type (receptacle), contact type (female socket), number of positions (5), pitch (0.138" / 3.50mm), number of rows (1), mounting type (free hanging in-line), and contact termination (crimp). All substitute parts match these specifications. Secondary parameters including insulation material, operating temperature range, fastening type, and color may vary based on application requirements.

Q: Can I use a substitute part with a different operating temperature range?

A: Yes, if your application operates within the substitute part's temperature range. The MDF97-5S-3.5C operates from -40°C ~ 105°C. Molex MX150 33471 series parts (0334710501, 0334710502, 0334710506, 0334710537, 0334710538, 0334710539, 0334710540) extend to -40°C ~ 125°C, providing additional thermal margin. Ensure your application requirements do not exceed the substitute part's maximum or minimum temperature limits.

Q: What is the difference between latch holder and latch lock fastening types?

A: Both fastening types secure the connector housing. Latch holder fastening is used in the Molex MX150 33471 series. Latch lock fastening is used in the Molex 51067 series and Ultra-Fit 172256 series. The specific fastening mechanism affects mechanical retention characteristics. Consult application requirements and mating connector specifications to determine which fastening type is appropriate.

Q: Are all substitute parts supplied with contacts included?

A: No. All substitute parts listed are supplied as housings without contacts included. The MDF97-5S-3.5C specification does not indicate contact inclusion status. Contacts must be sourced separately and must be compatible with the selected housing based on contact type (female socket), pitch (0.138" / 3.50mm), and termination method (crimp).

Q: What is the difference between PBT and polyester insulation materials?

A: Both materials are thermoplastic polymers suitable for connector housings. PBT (polybutylene terephthalate) is used in the MDF97-5S-3.5C, Molex 51067 series, and Ultra-Fit 172256 series. Polyester is used in the Molex MX150 33471 series. Material selection affects mechanical properties, chemical resistance, and thermal performance. For applications requiring specific material properties, select parts with matching insulation material.

Q: Can I substitute a gray housing part for a black housing part?

A: Color is a secondary parameter that does not affect electrical or mechanical function. Substitution is possible if all other parameters match application requirements. However, verify that color change does not conflict with design specifications, assembly procedures, or visual identification requirements in your application.

Q: What does "Contacts Not Included" mean in the substitute part specifications?

A: This indicates that the part is supplied as a housing only. Crimp contacts must be sourced separately. Ensure selected contacts are compatible with the 0.138" (3.50mm) pitch, female socket type, and crimp termination method. Contact compatibility is independent of housing substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and MSL 1 (unlimited) moisture sensitivity level, matching the regulatory status of the MDF97-5S-3.5C.

Q: What does Terminal Position Lock (TPA) mean in the Ultra-Fit 172256 series?

A: Terminal Position Lock (TPA) is a feature that prevents contact displacement during assembly and operation. This feature is present in parts 1722563105 and 1722564105 (Ultra-Fit 172256 series) but not in other substitute parts. If terminal position lock is required for your application, select from the Ultra-Fit 172256 series.

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