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TE Connectivity 2-641616-2 DIP Socket 40 Position Equivalent & Substitute Parts
Part Overview
The TE Connectivity AMP Connectors 2-641616-2 is a 40-position DIP socket with 0.6" row spacing, gold-plated beryllium copper contacts, and through-hole solder termination. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements. The socket accommodates 40-pin DIP integrated circuits with 0.100" pitch mating contacts and operates across the industrial temperature range of -55°C to 125°C.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 2-641616-2 |
| Manufacturer | TE Connectivity AMP Connectors |
| Category | Sockets for ICs, Transistors |
| Number of Positions | 40 (2 x 20) |
| Type | DIP, 0.6" (15.24mm) Row Spacing |
| Pitch - Mating | 0.100" (2.54mm) |
| Contact Finish - Mating | Gold |
| Contact Material - Mating | Beryllium Copper |
| Mounting Type | Through Hole |
| Termination | Solder |
| Operating Temperature | -55°C ~ 125°C |
| Material Flammability Rating | UL94 V-0 |
| Contact Resistance | 30mOhm |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the TE Connectivity 2-641616-2 is determined by the following critical parameters:
Primary Matching Criteria:
- Number of Positions: 40 (2 x 20)
- Type: DIP with 0.6" (15.24mm) row spacing
- Pitch - Mating: 0.100" (2.54mm)
- Mounting Type: Through Hole
- Termination: Solder
Secondary Compatibility Parameters:
- Operating Temperature Range: Minimum -55°C, Maximum 125°C
- Material Flammability Rating: UL94 V-0
- Contact Material - Mating: Beryllium Copper or equivalent phosphor bronze
- Contact Finish - Mating: Gold or tin (functionally compatible)
Substitute parts are grouped into two categories: direct equivalents with active product status and alternative designs with differing contact finishes or post configurations. All listed substitutes maintain the core 40-position DIP socket architecture with 0.100" pitch and through-hole solder termination.
Parameter Comparison
| Parameter | 2-641616-2 (Main) | 1-1825376-3 (TE Conn) | 116-93-640-41-006000 (Mill-Max) | 116-41-640-41-006000 (Mill-Max) | 116-91-640-41-006000 (Mill-Max) | 4840-6000-CP (3M) | 4840-6004-CP (3M) | A 40-LC-TR (Assmann) |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | TE Connectivity | TE Connectivity | Mill-Max | Mill-Max | Mill-Max | 3M | 3M | Assmann WSW |
| Number of Positions | 40 (2 x 20) | 40 (2 x 20) | 40 (2 x 20) | 40 (2 x 20) | 40 (2 x 20) | 40 (2 x 20) | 40 (2 x 20) | 40 (2 x 20) |
| Type | DIP, 0.6" Row Spacing | DIP, 0.6" Row Spacing | DIP, 0.6" Row Spacing | DIP, 0.6" Row Spacing | DIP, 0.6" Row Spacing | DIP, 0.6" Row Spacing | DIP, 0.6" Row Spacing | DIP, 0.6" Row Spacing |
| 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) |
| Contact Finish - Mating | Gold | Gold | Gold | Gold | Gold | Tin | Tin | Tin |
| Contact Material - Mating | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze |
| 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 |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -25°C ~ 85°C | -25°C ~ 85°C | -55°C ~ 85°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 |
| Contact Resistance | 30mOhm | 30mOhm | Not specified | 10mOhm | 10mOhm | Not specified | Not specified | 30mOhm |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | Not applicable | Not applicable | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Equivalent (Recommended Primary Substitute):
The TE Connectivity 1-1825376-3 is the recommended primary substitute for the obsolete 2-641616-2. This part maintains identical electrical and mechanical specifications including 40-position DIP configuration, 0.100" pitch, gold-plated beryllium copper contacts, and -55°C to 125°C operating temperature range. The 1-1825376-3 carries active product status and is currently in production, ensuring long-term availability. The housing material differs slightly (glass-filled thermoplastic versus standard thermoplastic), which does not affect functional compatibility.
Alternative Substitutes with Active Status:
The Mill-Max 116-93-640-41-006000 provides an alternative with gold-plated beryllium copper contacts matching the original specification. This part features elevated frame design and is ROHS3 compliant. The 116-41-640-41-006000 and 116-91-640-41-006000 offer lower contact resistance (10mOhm versus 30mOhm) with tin or tin-lead post finishes, suitable for applications where enhanced electrical performance is required.
Temperature-Limited Alternatives:
The 3M 4840-6000-CP and 4840-6004-CP sockets feature tin-plated phosphor bronze contacts and are ROHS3 compliant. These parts operate within a reduced temperature range (-25°C to 85°C) compared to the original specification. Selection of these alternatives is appropriate only for applications operating within this narrower temperature envelope.
Extended Temperature Range Alternative:
The Assmann WSW A 40-LC-TR maintains the full -55°C to 85°C operating range with tin-plated phosphor bronze contacts and 30mOhm contact resistance. This part is ROHS3 compliant and suitable for industrial applications requiring extended low-temperature performance.
Frequently Asked Questions (FAQ)
Q: Can the TE Connectivity 1-1825376-3 be used as a direct replacement for the 2-641616-2?
A: Yes. The 1-1825376-3 is functionally equivalent to the 2-641616-2. Both parts share identical pin count (40), pitch (0.100"), row spacing (0.6"), contact material (beryllium copper), contact finish (gold), operating temperature range (-55°C to 125°C), and flammability rating (UL94 V-0). The 1-1825376-3 is currently in active production.
Q: What is the difference between gold-plated and tin-plated contact finishes in these DIP sockets?
A: Gold-plated contacts (2-641616-2, 1-1825376-3, Mill-Max 116 series) provide superior corrosion resistance and lower contact resistance. Tin-plated contacts (3M 4840 series, Assmann A 40-LC-TR) offer cost efficiency and are suitable for standard industrial applications. Both finishes are compatible with standard DIP integrated circuits.
Q: Are the Mill-Max 116-41-640-41-006000 and 116-91-640-41-006000 interchangeable?
A: These parts are mechanically and electrically interchangeable. The primary difference is the post finish: 116-41-640-41-006000 features tin plating, while 116-91-640-41-006000 features tin-lead plating. Both provide 10mOhm contact resistance and elevated frame design. Selection depends on soldering process compatibility and regulatory requirements.
Q: Can I use the 3M 4840-6000-CP in applications requiring -55°C operation?
A: No. The 3M 4840-6000-CP operates within -25°C to 85°C temperature range, which does not meet the -55°C minimum requirement of the original 2-641616-2. For applications requiring full -55°C to 125°C operation, use the TE Connectivity 1-1825376-3 or Mill-Max 116 series alternatives.
Q: What does ROHS3 compliance mean for these socket components?
A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The original 2-641616-2 lists RoHS status as "Not applicable," while most active substitutes (1-1825376-3, Mill-Max 116-41 and 116-91, 3M 4840 series, Assmann A 40-LC-TR) are ROHS3 compliant, making them suitable for regulated markets.
Q: Does the elevated frame design of Mill-Max sockets affect PCB compatibility?
A: The elevated frame design of Mill-Max 116 series sockets increases the standoff height from the PCB. This affects vertical clearance but does not impact electrical compatibility or pin alignment. Verify PCB layout accommodates the increased height before selection.
Q: What is the significance of contact resistance specifications?
A: Contact resistance directly affects signal integrity and power dissipation. The original 2-641616-2 specifies 30mOhm contact resistance. Mill-Max 116-41 and 116-91 offer lower resistance (10mOhm), providing improved electrical performance. The 3M 4840 series does not specify contact resistance. For applications sensitive to contact resistance, select parts with specified values.
Q: Can I mix different substitute parts in the same design?
A: All listed substitutes maintain identical pin count, pitch, and row spacing, allowing mechanical interchangeability on the same PCB. However, mixing parts with different contact finishes (gold versus tin) or operating temperature ranges may introduce inconsistent electrical performance. Standardize on a single substitute part number for production designs.
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