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TE Connectivity AMP Connectors 535977-1 Equivalent & Substitute Parts
Part Overview
The TE Connectivity AMP Connectors 535977-1 is a 24 Position Receptacle Connector with 0.100" (2.54mm) pitch, designed for through-hole PCB mounting with gold-plated mating contacts. This connector belongs to the AMPMODU Mod II series and features a push-pull fastening mechanism with solder termination.
The 535977-1 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design compatibility, ensure continued component availability, and support ongoing production and field service requirements. Active alternatives provide enhanced compliance certifications and expanded operational specifications while maintaining core mechanical and electrical compatibility.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Connector Type | Receptacle |
| Contact Type | Female Socket |
| Number of Positions | 24 |
| Pitch - Mating | 0.100" (2.54mm) |
| Number of Rows | 2 |
| Row Spacing - Mating | 0.100" (2.54mm) |
| Mounting Type | Through Hole |
| Termination | Solder |
| Fastening Type | Push-Pull |
| Contact Finish - Mating | Gold |
| Contact Finish Thickness - Mating | 30.0µin (0.76µm) |
| Insulation Color | Black |
| Insulation Height | 0.340" (8.64mm) |
| Contact Length - Post | 0.115" (2.92mm) |
| Insulation Material | Polyester, Glass Filled |
| Contact Shape | Square |
| Contact Material | Phosphor Bronze |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the 535977-1 is determined by strict adherence to the following core parameters:
Critical Matching Parameters:
- Connector Type: Receptacle
- Contact Type: Female Socket
- Number of Positions: 24
- Pitch - Mating: 0.100" (2.54mm)
- Number of Rows: 2
- Row Spacing - Mating: 0.100" (2.54mm)
- Mounting Type: Through Hole
- Termination: Solder
- Fastening Type: Push-Pull
- Contact Shape: Square
Allowable Variations:
- Contact Finish - Mating: Gold or Tin (both acceptable for signal integrity)
- Contact Finish Thickness - Mating: Variations within industry tolerance
- Insulation Color: Black or Blue (functional equivalence)
- Insulation Height: Within ±0.010" tolerance range
- Contact Length - Post: Within ±0.010" tolerance range
- Insulation Material: Polyester or Liquid Crystal Polymer (LCP), both glass-filled
- Contact Material: Phosphor Bronze or Brass (both acceptable)
- RoHS Status: Compliant alternatives preferred for new designs
- Product Status: Active alternatives provide ongoing support
Substitute parts are grouped by manufacturer and series while maintaining all critical parameters. Variations in contact finish thickness, insulation material composition, and compliance certifications do not affect functional interchangeability in standard applications.
Parameter Comparison
| Parameter | 535977-1 | 6-534206-2 | 0015445124 | 0015445824 | 76314-112LF | 76314-212LF | 87606-312LF | 87606-412LF | 87606-812LF | 89891-312LF | 89891-412LF |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Connector Type | Receptacle | Receptacle | Receptacle | Receptacle | Receptacle | Receptacle | Receptacle | Receptacle | Receptacle | Receptacle, Bottom or Top Entry | Receptacle, Bottom or Top Entry |
| Contact Type | Female Socket | Female Socket | Female Socket | Female Socket | Female Socket | Female Socket | Female Socket | Female Socket | Female Socket | Female Socket | Female Socket |
| Number of Positions | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Pitch - Mating | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" |
| Number of Rows | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Row Spacing - Mating | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" | 0.100" |
| 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 |
| Fastening Type | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull |
| Contact Finish - Mating | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Tin | Gold | Gold | Tin |
| Contact Finish Thickness - Mating | 30.0µin | 30.0µin | 30.0µin | 15.0µin | 30.0µin | 39.4µin | 30.0µin | 78.7µin | 15.0µin | 30.0µin | 78.7µin |
| Insulation Color | Black | Black | Black | Black | Blue | Blue | Blue | Blue | Blue | Blue | Blue |
| Insulation Height | 0.340" | 0.320" | 0.340" | 0.340" | 0.335" | 0.335" | 0.335" | 0.335" | 0.335" | 0.335" | 0.335" |
| Contact Length - Post | 0.115" | 0.115" | 0.120" | 0.120" | 0.135" | 0.135" | 0.114" | 0.114" | 0.114" | 0.114" | 0.114" |
| Contact Shape | Square | Square | Square | Square | Square | Square | Square | Square | Square | Square | Square |
| Contact Material | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Brass | Brass | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Primary Recommendation: TE Connectivity 6-534206-2
The 6-534206-2 is the direct active equivalent from the same manufacturer and series (AMPMODU Mod II). This part maintains identical core specifications to the 535977-1 while providing ROHS3 compliance and active product status. The 6-534206-2 features all 24 positions loaded and includes operating temperature specification (-65°C ~ 125°C) and current rating (2A), providing enhanced documentation for design validation.
Secondary Recommendations: Molex C-Grid 71850 Series
The Molex 0015445124 and 0015445824 provide functionally equivalent substitution with active product status and ROHS3 compliance. Both parts feature identical pitch, row spacing, and mounting configuration. The 0015445124 offers gold mating contact finish (30.0µin) matching the original specification, while the 0015445824 provides reduced gold thickness (15.0µin). Both include operating temperature range (-40°C ~ 125°C), current rating (2.5A), and voltage rating (500VAC).
Tertiary Recommendations: Amphenol ICC (FCI) Dubox™ and BergCon® Series
The Amphenol ICC parts (76314-112LF, 76314-212LF, 87606-312LF, 87606-412LF, 87606-812LF, 89891-312LF, 89891-412LF) provide mechanical and electrical equivalence with RoHS compliance and active product status. The Dubox™ series (87606 and 89891 base numbers) offers board-to-board configuration with push-pull fastening. The 89891 series provides bottom or top entry connector orientation for flexible PCB layout requirements. The BergCon® series (76314 base number) offers alternative insulation material composition (thermoplastic polyester) with UL94 V-0 flammability rating.
Contact Finish Selection:
Gold-plated mating contacts (30.0µin thickness) are recommended for applications requiring corrosion resistance and signal integrity in standard environments. Tin-plated alternatives (87606-412LF, 89891-412LF) are suitable for cost-optimized designs where gold plating is not required.
Compliance Considerations:
All recommended substitutes provide RoHS compliance, addressing regulatory requirements for new designs and production. The original 535977-1 is RoHS non-compliant; substitution with compliant alternatives is necessary for applications subject to RoHS directives.
Frequently Asked Questions (FAQ)
Q: Can the 535977-1 be directly replaced with the 6-534206-2?
A: Yes. The 6-534206-2 is the direct active equivalent from TE Connectivity AMPMODU Mod II series. Both parts share identical connector type, contact configuration, pitch, row spacing, mounting type, and fastening mechanism. The 6-534206-2 provides enhanced specifications including operating temperature range and current rating documentation.
Q: What is the difference between gold and tin contact finishes in these connectors?
A: Contact finish affects corrosion resistance and environmental performance. Gold-plated contacts (30.0µin) provide superior corrosion resistance and are standard for general-purpose applications. Tin-plated contacts (78.7µin) offer cost optimization and are suitable for applications where gold plating is not required. Both finishes maintain electrical conductivity and signal integrity.
Q: Are Molex and Amphenol ICC connectors mechanically compatible with the TE Connectivity 535977-1?
A: Yes, within the specified parameter tolerances. All recommended substitutes maintain identical pitch (0.100"), row spacing (0.100"), mounting type (through-hole), and fastening mechanism (push-pull). Insulation height variations (0.320" to 0.340") and contact length variations (0.114" to 0.135") fall within standard mechanical tolerance ranges and do not affect mating compatibility.
Q: What is the significance of the "Number of Positions Loaded" specification?
A: The 535977-1 specifies 20 positions loaded out of 24 total positions, indicating that only 20 contact positions contain installed contacts. Substitute parts with "All" positions loaded contain contacts in all 24 positions. This difference does not affect compatibility; the connector can be used with fewer loaded positions if required by the application.
Q: Does insulation color affect electrical performance?
A: No. Insulation color (black or blue) is a visual identifier and does not affect electrical performance, signal integrity, or functional compatibility. Color selection is typically driven by manufacturing standards or design documentation requirements.
Q: Are the Amphenol ICC Dubox™ series connectors with bottom or top entry orientation compatible with standard board-to-board applications?
A: Yes. The 89891-312LF and 89891-412LF provide bottom or top entry connector orientation, offering flexibility in PCB layout and assembly procedures. These parts maintain identical electrical and mechanical specifications to standard board-to-board variants and are functionally interchangeable.
Q: What packaging options are available for these substitute parts?
A: Substitute parts are available in multiple packaging formats: Tube (6-534206-2, 87606-312LF, 87606-412LF, 87606-812LF, 89891-312LF, 89891-412LF), Tray (0015445124, 0015445824), and Bulk (76314-112LF, 76314-212LF). Packaging selection does not affect connector performance and is determined by procurement and inventory management requirements.
Q: Is RoHS compliance mandatory for substitution?
A: RoHS compliance is mandatory for applications subject to RoHS directives (EU Directive 2011/65/EU and amendments). All recommended active substitutes provide RoHS compliance. The original 535977-1 is RoHS non-compliant and should be replaced with compliant alternatives for new designs and regulated applications.
Q: Can contact material differences (Phosphor Bronze vs. Brass) affect connector performance?
A: Both Phosphor Bronze and Brass are acceptable contact materials for this connector category. Phosphor Bronze (used in 535977-1, Molex, and most Amphenol ICC parts) provides standard performance characteristics. Brass (used in BergCon® 76314 series) offers alternative material properties. Both materials maintain electrical conductivity and mechanical durability within standard operating parameters.
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