TE Connectivity 1761603-7 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 1761603-7 is a rectangular connector header designed for through-hole mounting applications. This shrouded 4-wall header connector features 20 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing and is terminated by solder. The connector utilizes male pin contacts with gold-plated mating surfaces and tin-plated posts, constructed from phosphor bronze material with polybutylene terephthalate (PBT) insulation.

The 1761603-7 is classified as obsolete. Equivalent and substitute parts are available from TE Connectivity and HARTING manufacturers, offering active product status with enhanced compliance certifications and alternative packaging configurations.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	20
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Shrouding	Shrouded - 4 Wall
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Insulation Material	Polybutylene Terephthalate (PBT)
Operating Temperature Range	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1A per Contact
Voltage Rating	250VAC

Substitute Part Grouping Explanation

Substitution eligibility for the 1761603-7 is determined by the following critical parameters:

Mandatory Matching Parameters:

Connector Type: Header
Contact Type: Male Pin
Number of Positions: 20
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Mounting Type: Through Hole
Termination: Solder
Shrouding: Shrouded - 4 Wall
Contact Shape: Square
Contact Finish - Mating: Gold
Contact Finish - Post: Tin
Insulation Material: Polybutylene Terephthalate (PBT) or equivalent glass-filled variants
Material Flammability Rating: UL94 V-0
Features: Keying Slot

Allowable Variations:

Contact Length - Post: 0.102" to 0.177" (2.60mm to 4.50mm)
Insulation Height: 0.350" to 0.388" (8.89mm to 9.86mm)
Contact Material: Phosphor Bronze or Copper Alloy
Operating Temperature Range: -65°C to -55°C minimum; 105°C to 125°C maximum
Packaging: Bulk, Tube, or Tray
Product Status: Active or Obsolete
RoHS Compliance: Not applicable, ROHS3 Compliant, or RoHS Compliant
Fastening Type: Push-Pull or Latch Holder

Substitute parts meeting these criteria maintain functional and mechanical compatibility with the original 1761603-7 specification.

Parameter Comparison

Parameter	1761603-7	2-1761603-7	5103309-5	09185205322	09185205324	09185206322	09185206324	09185207322	09185207324	09195205324	09195206324
Manufacturer	TE Connectivity	TE Connectivity	TE Connectivity	HARTING	HARTING	HARTING	HARTING	HARTING	HARTING	HARTING	HARTING
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	20	20	20	20	20	20	20	20	20	20	20
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - 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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole	Through Hole	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	Solder	Solder	Solder
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.102" (2.60mm)	0.102" (2.60mm)	0.120" (3.05mm)	0.177" (4.50mm)	0.114" (2.90mm)	0.177" (4.50mm)	0.114" (2.90mm)	0.177" (4.50mm)	0.114" (2.90mm)	0.114" (2.90mm)	0.114" (2.90mm)
Insulation Height	0.350" (8.89mm)	0.350" (8.89mm)	0.388" (9.86mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold or Gold-Palladium	Gold	Gold	Gold	Not specified	Gold	Gold	Gold	Not specified
Contact Finish - Post	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Contact Material	Phosphor Bronze	Phosphor Bronze	Brass	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy
Insulation Material	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Not specified	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Glass Filled
Operating Temperature Range	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
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	UL94 V-0	UL94 V-0	UL94 V-0
Features	Keying Slot	Keying Slot	Keying Slot	Keying Slot	Keying Slot	Keying Slot	Keying Slot	Keying Slot	Keying Slot	Keying Slot	Keying Slot
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not applicable	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: TE Connectivity 2-1761603-7

The 2-1761603-7 is the direct equivalent to the obsolete 1761603-7. Both parts share identical electrical and mechanical specifications, including contact materials, pitch spacing, and operating temperature range. The 2-1761603-7 is classified as active product status with ROHS3 compliance, making it the preferred choice for new designs and production continuity. The only notable difference is packaging configuration (bulk versus original specification) and insulation color variation (blue versus black).

Secondary Recommendations: TE Connectivity 5103309-5

The 5103309-5 offers active product status with RoHS compliance. This part maintains all critical dimensional and electrical parameters with the exception of contact material (brass instead of phosphor bronze) and insulation material specification. The extended insulation height (0.388" versus 0.350") and longer contact post length (0.120" versus 0.102") may require PCB layout verification for clearance compatibility.

HARTING SEK Series Alternatives

The HARTING SEK series connectors (09185205322, 09185205324, 09185206322, 09185206324, 09185207322, 09185207324, 09195205324, 09195206324) provide cross-manufacturer substitution options. All HARTING parts feature active product status with ROHS3 compliance and REACH unaffected certification. These connectors employ copper alloy contact materials and glass-filled insulation variants. Operating temperature range extends to -55°C to 125°C, providing enhanced thermal performance. Fastening type transitions from push-pull to latch holder mechanism. Contact post lengths vary between 0.114" and 0.177", requiring mechanical compatibility assessment.

Compliance Considerations

All substitute parts maintain UL94 V-0 flammability rating and moisture sensitivity level 1 (unlimited). HARTING parts provide superior regulatory compliance with ROHS3 and REACH certifications compared to the original obsolete part. TE Connectivity 2-1761603-7 and 5103309-5 offer compliance pathways for regulated applications.

Frequently Asked Questions (FAQ)

Q: Can the 2-1761603-7 directly replace the 1761603-7 without PCB modifications?

A: Yes. The 2-1761603-7 maintains identical pitch spacing (0.100"), contact length specifications, and mounting footprint. No PCB layout changes are required. The primary difference is packaging format and insulation color.

Q: What is the significance of the contact post length variation among substitute parts?

A: Contact post length determines solder joint depth and PCB penetration. The original 1761603-7 specifies 0.102" (2.60mm) post length. Substitute parts range from 0.102" to 0.177". Longer posts (0.177") provide increased solder joint surface area but require verification that PCB thickness and through-hole depth accommodate the extended length without board damage or component interference.

Q: Are HARTING SEK series connectors mechanically compatible with TE Connectivity AMP-Latch series receptacles?

A: HARTING SEK series connectors maintain identical mating pitch (0.100"), contact geometry (square shape), and shrouding configuration (4-wall). Mechanical mating compatibility is established. However, fastening mechanism differs (latch holder versus push-pull), which may affect connector retention characteristics in specific applications.

Q: What packaging options are available for production quantities?

A: Substitute parts are available in multiple packaging configurations: bulk (loose parts), tube (rolled packaging), and tray (organized matrix). Selection depends on assembly process requirements and inventory management protocols. Bulk packaging typically offers cost advantages for high-volume production.

Q: Do all substitute parts meet the original 250VAC voltage rating?

A: The original 1761603-7 specifies 250VAC voltage rating. TE Connectivity 2-1761603-7 and 5103309-5 maintain this specification. HARTING SEK series parts do not specify voltage rating in available documentation. For applications requiring explicit voltage rating compliance, TE Connectivity alternatives are recommended.

Q: What is the difference between PBT and PCT insulation materials used in substitute parts?

A: Both polybutylene terephthalate (PBT) and polycyclohexylenedimethylene terephthalate (PCT) are thermoplastic polyester materials. PCT offers enhanced thermal and chemical resistance compared to PBT. Glass-filled variants of both materials improve dimensional stability and mechanical strength. For standard applications within the -55°C to 125°C operating range, both materials provide equivalent performance.

Q: Are there current rating differences among substitute parts?

A: The original 1761603-7 specifies 1A per contact at 250VAC. TE Connectivity 2-1761603-7 maintains this specification. HARTING SEK series parts do not specify current rating in available documentation. For applications with defined current requirements, TE Connectivity parts provide explicit electrical performance guarantees.

Q: What is the significance of RoHS3 compliance versus RoHS compliance?

A: RoHS3 (Directive 2011/65/EU as amended) represents the current regulatory standard for restricted hazardous substances in electrical and electronic equipment. RoHS Compliant indicates adherence to earlier RoHS directives. ROHS3 Compliant parts meet current EU regulatory requirements and are preferred for new product designs and international distribution.

Q: Can substitute parts with different contact materials (copper alloy versus phosphor bronze) affect electrical performance?

A: Both phosphor bronze and copper alloy materials provide adequate electrical conductivity for 1A per contact applications. Contact finish (gold mating surface, tin post) determines primary electrical interface characteristics. Material substitution does not degrade electrical performance within specified operating parameters.

Q: What inventory availability should be considered for production planning?

A: Current inventory levels vary significantly among substitute parts. TE Connectivity 2-1761603-7 offers 3440 units in stock. HARTING 09185206324 provides 3982 units. Original 1761603-7 inventory is 927 units. For production continuity, parts with higher inventory levels reduce supply chain risk.

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