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TE Connectivity 4-644611-2 Equivalent & Substitute Parts
Part Overview
The TE Connectivity 4-644611-2 is a rectangular connector header for through-hole mounting, featuring 12 positions at 0.156" (3.96mm) pitch. This connector is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design and procurement requirements. The part operates across industrial and general-purpose applications with a 600VAC rating and -55°C to 105°C temperature range. Active substitute parts maintain core electrical and mechanical compatibility while offering current product availability and support.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Header |
| Contact Type | Male Pin |
| Number of Positions | 12 |
| Pitch - Mating | 0.156" (3.96mm) |
| Mounting Type | Through Hole |
| Termination | Solder |
| Shrouding | Shrouded - 1 Wall |
| Fastening Type | Friction Lock |
| Contact Length - Mating | 0.450" (11.43mm) |
| Overall Contact Length | 0.700" (17.78mm) |
| Voltage Rating | 600VAC |
| Operating Temperature | -55°C ~ 105°C |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the 4-644611-2 are grouped based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:
Core Compatibility Parameters:
- 12-position connector configuration
- 0.156" (3.96mm) mating pitch
- Male pin contact type
- Through-hole solder termination
- Shrouded 1-wall design
- Friction lock fastening
- 0.450" (11.43mm) mating contact length
- UL94 V-0 flammability rating
- ROHS3 compliance
Acceptable Variations:
- Contact post length (3.18mm to 4.32mm range)
- Overall contact length (0.700" to 0.750")
- Insulation height (0.446" to 0.545")
- Contact finish composition (tin or gold plating)
- Contact finish thickness (60.0µin to 150.0µin)
- Insulation material (thermoplastic glass-filled or polyester glass-filled)
- Number of positions loaded (11 or 12)
- Manufacturer (TE Connectivity or Molex)
Series Compatibility:
- TE Connectivity MTA-156 series
- Molex KK396 series (41791, 42491, 42891 variants)
Parameter Comparison
| Part Number | Manufacturer | Positions | Pitch | Contact Type | Mating Length | Overall Length | Insulation Height | Contact Finish - Mating | Product Status | Inventory |
|---|---|---|---|---|---|---|---|---|---|---|
| 4-644611-2 | TE Connectivity | 12 | 0.156" | Male Pin | 0.450" | 0.700" | 0.545" | Tin | Obsolete | 803 Pcs |
| 4-644615-2 | TE Connectivity | 12 | 0.156" | Male Pin | 0.450" | 0.700" | 0.545" | Tin | Active | 2089 Pcs |
| 0026604120 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.720" | 0.446" | Tin | Active | 11140 Pcs |
| 0026604122 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.720" | 0.446" | Tin | Active | 1075 Pcs |
| 0026604123 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.750" | 0.446" | Tin | Active | 892 Pcs |
| 0026606120 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.720" | 0.446" | Tin | Active | 712 Pcs |
| 0026606122 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.720" | 0.446" | Gold | Active | 1075 Pcs |
| 0026624120 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.720" | 0.446" | Tin | Active | 813 Pcs |
| 0026624126 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.720" | 0.446" | Tin | Active | 714 Pcs |
| 0026644120 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.720" | 0.446" | Tin | Active | 889 Pcs |
| 0026654120 | Molex | 12 | 0.156" | Male Pin | 0.450" | 0.720" | 0.446" | Gold | Active | 831 Pcs |
Engineering Selection Recommendations
Primary Recommendation: TE Connectivity 4-644615-2
The 4-644615-2 is the direct active equivalent to the obsolete 4-644611-2. Both parts share identical electrical and mechanical specifications, including mating contact length, overall contact length, insulation height, and tin contact finish. The 4-644615-2 maintains the same MTA-156 series designation and offers superior product status as an active part with 2089 units in stock. This part requires no design modification and provides seamless form-fit-function replacement.
Secondary Recommendations: Molex KK396 Series
Molex KK396 series connectors (0026604120, 0026604122, 0026604123, 0026606120, 0026606122, 0026624120, 0026624126, 0026644120, 0026654120) provide functional equivalence with minor dimensional variations. All maintain 12-position, 0.156" pitch configuration with identical mating contact length. Variations in overall contact length (0.720" to 0.750") and insulation height (0.446") accommodate different PCB stack-up requirements. Contact finish options include tin and gold plating. These parts are ROHS3 compliant and UL94 V-0 rated, matching the original specification.
Selection Criteria by Application:
- Direct replacement without PCB modification: 4-644615-2
- High-reliability applications requiring gold plating: 0026606122, 0026654120
- Applications with reduced PCB height constraints: Molex KK396 series (0.446" insulation height)
- Extended contact post length requirement: 0026604123 (0.170" post length)
- Partial position loading: 0026624120, 0026624126 (11 positions loaded)
All substitute parts maintain ROHS3 compliance and UL94 V-0 flammability rating, ensuring regulatory alignment with the original specification.
Frequently Asked Questions (FAQ)
Q: Can the 4-644615-2 be used as a direct replacement for the 4-644611-2?
A: Yes. The 4-644615-2 is functionally and mechanically identical to the 4-644611-2. Both parts share the same connector type, pitch, contact configuration, and electrical ratings. The primary difference is product status: 4-644615-2 is active with current manufacturing support.
Q: What are the key differences between TE Connectivity and Molex substitute options?
A: TE Connectivity 4-644615-2 provides exact dimensional matching. Molex KK396 series parts maintain electrical compatibility and core mechanical parameters but feature reduced insulation height (0.446" versus 0.545") and slightly increased overall contact length (0.720" versus 0.700"). These variations are within acceptable tolerances for most applications but require verification against specific PCB layout constraints.
Q: Are gold-plated contact options (0026606122, 0026654120) necessary for standard applications?
A: Gold plating is not required for general-purpose and industrial applications. Tin-plated options provide adequate contact reliability for standard environments. Gold plating is specified for applications requiring enhanced corrosion resistance or high-reliability requirements in harsh environments.
Q: What is the significance of "Number of Positions Loaded" in parts 0026624120 and 0026624126?
A: These parts are configured with 11 positions loaded instead of 12. They are suitable for applications requiring one vacant position slot. Standard applications requiring all 12 positions should use parts with "All" positions loaded.
Q: Do all substitute parts maintain the same voltage and temperature ratings?
A: The TE Connectivity 4-644615-2 maintains identical 600VAC voltage rating and -55°C to 105°C operating temperature range. Molex KK396 series parts do not specify voltage or operating temperature ratings in the provided data. Verification against application requirements is necessary before selection.
Q: What is the impact of insulation material differences (thermoplastic glass-filled versus polyester glass-filled)?
A: Both materials meet UL94 V-0 flammability requirements. Thermoplastic glass-filled insulation (TE Connectivity parts) and polyester glass-filled insulation (Molex parts) provide equivalent performance for standard industrial applications. Material selection should be verified against specific environmental and chemical exposure requirements.
Q: Are there any PCB layout considerations when switching from 4-644611-2 to Molex alternatives?
A: Molex KK396 series parts feature reduced insulation height (0.446" versus 0.545"), which may affect PCB clearance calculations. Overall contact length variation (0.720" versus 0.700") requires verification against mating connector depth specifications. Contact post length variations (3.56mm to 4.32mm) impact solder joint geometry and should be evaluated against PCB thickness and via placement.
Q: Which substitute part offers the highest inventory availability?
A: Molex 0026604120 provides the highest inventory level at 11,140 units in stock, followed by TE Connectivity 4-644615-2 at 2,089 units. For immediate procurement requirements, 0026604120 offers superior availability.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original 4-644611-2 specification. All parts are also REACH unaffected and classified as EAR99 for export control purposes.
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