125CH-C1-09 Rectangular Connector Housing - Equivalent & Substitute Parts

Part Overview

The 125CH-C1-09 is a 9-position receptacle housing manufactured by Adam Tech, designed for 0.049" (1.25mm) pitch rectangular connector applications. This component features a beige polyamide (PA66) insulation material and operates across the -25°C to 85°C temperature range. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	9
Pitch	0.049" (1.25mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Fastening Type	Friction Lock
Operating Temperature	-25°C ~ 85°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 125CH-C1-09 is determined by strict alignment of the following core parameters:

Connector type: Receptacle
Contact type: Female socket
Number of positions: 9
Pitch: 0.049" (1.25mm)
Number of rows: 1
Mounting type: Free hanging (in-line)
Contact termination: Crimp
Fastening type: Friction lock
RoHS compliance: ROHS3 compliant
MSL rating: 1 (unlimited)

Two substitute parts meet these criteria: the 125CH-A-09 (Adam Tech, active status) and the 0511460900 (Molex PanelMate 51146 series, active status). Both maintain functional and electrical equivalence through identical pitch, position count, contact configuration, and termination method.

Parameter Comparison

Parameter	125CH-C1-09 (Main)	125CH-A-09 (Substitute)	0511460900 (Substitute)
Manufacturer	Adam Tech	Adam Tech	Molex
Series	125CH	125CH	PanelMate 51146
Product Status	Obsolete	Active	Active
Connector Type	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket
Number of Positions	9	9	9
Pitch	0.049" (1.25mm)	0.049" (1.25mm)	0.049" (1.25mm)
Number of Rows	1	1	1
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Termination	Crimp	Crimp	Crimp
Fastening Type	Friction Lock	Friction Lock	Friction Lock
Insulation Material	Polyamide (PA66)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Color	Beige	White	Natural
Operating Temperature	-25°C ~ 85°C	-25°C ~ 85°C	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both substitute parts are active-status components with full ROHS3 compliance and unlimited MSL ratings, providing superior procurement availability compared to the obsolete 125CH-C1-09.

The 125CH-A-09 maintains the Adam Tech 125CH series lineage and shares identical electrical and mechanical specifications with the main part. The primary difference is insulation material composition (PBT versus PA66) and color designation (white versus beige). This part is recommended for designs requiring continuity within the Adam Tech connector ecosystem.

The 0511460900 (Molex PanelMate 51146) provides cross-manufacturer equivalence with identical functional parameters. This part extends the operating temperature range to -40°C minimum, offering enhanced thermal performance. The PBT insulation material and natural color represent standard Molex specifications for this connector class.

Both substitutes maintain full electrical and mechanical compatibility through matching pitch, position count, contact configuration, and termination methodology. Selection between substitutes should be based on supply chain strategy, manufacturer preference, and any design-specific thermal or material requirements.

Frequently Asked Questions (FAQ)

Q: Can the 125CH-A-09 directly replace the 125CH-C1-09 in existing designs?

A: Yes. Both parts share identical connector type, contact configuration, pitch, position count, mounting method, and termination type. The insulation material differs (PBT versus PA66) and color differs (white versus beige), but these do not affect electrical or mechanical compatibility.

Q: What is the primary advantage of the Molex 0511460900 substitute?

A: The 0511460900 extends the minimum operating temperature to -40°C, compared to -25°C for the Adam Tech parts. This provides enhanced thermal performance for applications requiring lower temperature operation. All other functional parameters remain equivalent.

Q: Are there packaging differences between the main part and substitutes?

A: The 125CH-C1-09 is listed with unspecified packaging, while both substitutes are supplied in bulk packaging. Confirm packaging requirements with your procurement process.

Q: Do all three parts require the same contact components?

A: Yes. All three parts are receptacle housings with 9 positions at 0.049" (1.25mm) pitch and crimp termination. Contact selection is independent of housing manufacturer and depends on your specific application requirements.

Q: Are there compliance or certification differences?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited). No compliance differentiation exists between the main part and substitutes.

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