Molex 0901200925 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0901200925 is a vertical rectangular connector header designed for through-hole mounting applications. This 5-position, 2.54mm pitch connector operates across -55°C to 125°C and features gold-plated mating contacts with tin-plated posts. The part is currently active in production and RoHS3 compliant, making it suitable for automotive and general-purpose applications requiring board-to-board or cable interconnection.

Substitute parts are necessary when the primary part experiences supply constraints, when design requirements demand alternative material compositions or temperature ranges, or when manufacturing processes require connectors from different suppliers that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Pitch - Mating	0.100" (2.54mm)
Number of Positions	5
Number of Rows	1
Connector Type	Header, Breakaway
Contact Type	Male Pin
Mounting Type	Through Hole
Termination	Solder
Shrouding	Unshrouded
Contact Shape	Square
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0901200925 is determined by strict adherence to the following parameters:

Critical Parameters (Must Match):

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 5
Number of Rows: 1
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Connector Style: Board to Board or Cable
Shrouding: Unshrouded
Contact Shape: Square
Material Flammability Rating: UL94 V-0

Allowable Variations:

Operating Temperature Range: Substitute parts may operate at narrower ranges provided the minimum and maximum do not fall below -55°C or above 125°C respectively
Contact Finish - Mating: Gold or equivalent noble metal finishes
Contact Finish - Post: Tin or Tin-Lead
Insulation Material: Polyester, Thermoplastic, Liquid Crystal Polymer (LCP), or Polybutylene Terephthalate (PBT)
Insulation Color: Black or alternative colors
Contact Material: Brass, Copper Alloy, or Phosphor Bronze
Connector Type: Header or Header Breakaway variants
Product Status: Active or Obsolete (with inventory availability consideration)
RoHS Compliance: ROHS3 Compliant or RoHS non-compliant (depending on application requirements)

All substitute parts listed maintain the 5-position, 2.54mm pitch configuration with male pin contacts suitable for through-hole solder termination on printed circuit boards.

Parameter Comparison

Parameter	Molex 0901200925	TE 4-103239-0-05	TE 5-146281-5	Amphenol 77311-124-05LF	TE 826629-5	Harwin M20-9730546	Harwin M20-9990546	Adam Tech PH1-05-UA
Manufacturer	Molex	TE Connectivity	TE Connectivity	Amphenol ICC (FCI)	TE Connectivity	Harwin Inc.	Harwin Inc.	Adam Tech
Series	C-Grid III 90120	AMPMODU Mod II	AMPMODU Mod II	BERGSTIK®	AMPMODU Mod II	M20	M20	PH1
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	5	5	5	5	5	5	5	5
Number of Rows	1	1	1	1	1	1	1	1
Connector Type	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header	Header, Breakaway	Header, Cuttable	Header, Cuttable	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square
Operating Temperature	-55°C ~ 125°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 125°C	-65°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Contact Finish - Mating	Gold	Gold	Gold	Gold or Gold, GXT™	Gold	Tin	Tin	Gold
Contact Finish - Post	Tin	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Gold
Contact Material	Brass	Copper Alloy	Copper Alloy	Phosphor Bronze	Brass	Brass	Brass	Brass
Insulation Material	Polyester, Glass Filled	Thermoplastic	Liquid Crystal Polymer (LCP)	Thermoplastic	Polybutylene Terephthalate (PBT)	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Polybutylene Terephthalate (PBT), Glass Filled
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Obsolete	Active	Active	Active	Active	Active	Active
Current Inventory	996 Pcs	10672 Pcs	20135 Pcs	1137 Pcs	2100 Pcs	3063 Pcs	3400 Pcs	33594 Pcs

Engineering Selection Recommendations

Primary Substitutes (Active Status, RoHS3 Compliant):

TE Connectivity 5-146281-5 and Harwin M20-9730546 and M20-9990546 are the preferred substitutes. These parts maintain active production status and full RoHS3 compliance matching the original specification. The TE 5-146281-5 operates within the same temperature envelope as the Molex part and uses Liquid Crystal Polymer insulation. The Harwin M20 series offers cuttable header variants with equivalent electrical performance.

Secondary Substitutes (Active Status, Temperature Consideration):

Adam Tech PH1-05-UA provides the highest current inventory availability (33,594 pcs) and maintains RoHS3 compliance. Operating temperature range is -40°C to 105°C, which is narrower than the original -55°C to 125°C specification. This part is suitable for applications not requiring the full temperature extremes of the primary part.

Amphenol ICC 77311-124-05LF operates to -65°C and 125°C, exceeding the original temperature range. This part is RoHS compliant and uses Phosphor Bronze contacts with Thermoplastic insulation, offering enhanced durability for demanding environments.

Obsolete Status (Not Recommended for New Designs):

TE Connectivity 4-103239-0-05 is marked obsolete and uses Tin-Lead post finish, which is non-compliant with RoHS requirements. While inventory is available (10,672 pcs), this part should not be selected for new product designs.

Frequently Asked Questions (FAQ)

Q: Can I use these substitute parts interchangeably with the Molex 0901200925?

A: Yes, all listed substitute parts maintain the critical parameters: 5-position, 2.54mm pitch, male pin contacts, through-hole solder termination, and unshrouded square contact configuration. Physical and electrical compatibility is maintained across all active-status substitutes.

Q: What is the difference between the Harwin M20-9730546 and M20-9990546?

A: Both are Harwin M20 series headers with identical mechanical dimensions and electrical ratings. The primary difference is contact finish: M20-9730546 features tin-plated mating contacts, while M20-9990546 features gold-plated mating contacts. Both use tin-plated posts and operate across -40°C to 105°C.

Q: Does the operating temperature range matter for my application?

A: Yes, if your application requires operation below -40°C or above 105°C, only the Molex 0901200925 or Amphenol 77311-124-05LF are suitable. The Molex part operates to -55°C minimum, and the Amphenol part operates to -65°C minimum and 125°C maximum. Most general-purpose and automotive applications operate within the -40°C to 105°C range covered by the Harwin and Adam Tech alternatives.

Q: What is the significance of RoHS compliance?

A: RoHS3 compliance indicates the part contains no restricted substances (lead, cadmium, mercury, hexavalent chromium, PBBs, or PBDEs) and meets environmental regulations for products sold in the European Union and other regulated markets. The Molex 0901200925 is ROHS3 compliant. The TE 4-103239-0-05 is non-compliant due to Tin-Lead post finish and should not be used in RoHS-regulated applications.

Q: Which substitute offers the best inventory availability?

A: Adam Tech PH1-05-UA has the highest current inventory at 33,594 pieces. TE Connectivity 5-146281-5 offers 20,135 pieces. Both are suitable for high-volume procurement scenarios.

Q: Are there mechanical differences in contact length between these parts?

A: Yes. Contact length variations exist across the substitute parts. The Molex 0901200925 has a mating contact length of 0.266" (6.75mm), while TE AMPMODU parts have 0.230" (5.84mm). The Harwin M20-9730546 has 0.276" (7.00mm). These variations may affect mating force and connector stack height in applications with tight mechanical constraints. Verify compatibility with mating connector specifications before substitution.

Q: Can I substitute the Molex part with the TE 4-103239-0-05?

A: The TE 4-103239-0-05 is electrically and mechanically compatible but is marked obsolete and is RoHS non-compliant. It should only be used for legacy product support or repair of existing assemblies. New designs should not incorporate this part.

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