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3M 3428-1003 Rectangular Connector Header - Equivalent & Substitute Parts
Part Overview
The 3M 3428-1003 is a right-angle rectangular connector header with 20 positions at 2.54mm pitch, designed for through-hole mounting with solder termination. This connector features shrouded 3-wall construction, male pin contacts with gold-plated mating surfaces, and operates across -55°C to 105°C. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Header |
| Contact Type | Male Pin |
| Pitch - Mating | 0.100" (2.54mm) |
| Number of Positions | 20 |
| Number of Rows | 2 |
| Row Spacing - Mating | 0.100" (2.54mm) |
| Mounting Type | Through Hole, Right Angle |
| Termination | Solder |
| Contact Finish - Mating | Gold |
| Operating Temperature | -55°C ~ 105°C |
| Current Rating | 1.75A |
| Material Flammability Rating | UL94 V-0 |
Substitute Part Grouping Explanation
Substitution for the 3428-1003 is based on the following critical parameters that must remain constant:
- Connector type: Header
- Contact type: Male pin
- Pitch: 0.100" (2.54mm)
- Number of positions: 20
- Number of rows: 2
- Row spacing: 0.100" (2.54mm)
- Mounting: Through hole, right angle
- Termination: Solder
- Operating temperature range: -55°C ~ 105°C
- Current rating: 1.75A
- Flammability: UL94 V-0
Acceptable variations include shrouding configuration (3-wall to 4-wall), contact material composition (copper alloy to brass or phosphor bronze), contact finish thickness specifications, and fastening mechanism (push-pull to latch lock). Active product status and RoHS compliance are preferred but not mandatory for functional equivalence.
Parameter Comparison
| Part Number | Manufacturer | Series | Shrouding | Contact Material | Fastening Type | Contact Length - Post | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| 3428-1003 | 3M | 3000 | Shrouded - 3 Wall | Copper Alloy | Push-Pull | 0.155" (3.94mm) | Obsolete | Non-compliant |
| D3428-5002-AR | 3M | D3000 | Shrouded - 4 Wall | Brass | Push-Pull | 0.112" (2.84mm) | Active | ROHS3 Compliant |
| N3428-5002RB | 3M | 3000 | Shrouded - 4 Wall | Copper Alloy | Push-Pull | 0.112" (2.84mm) | Active | ROHS3 Compliant |
| 65823-019LF | Amphenol ICC (FCI) | Quickie™ | Shrouded - 4 Wall | Phosphor Bronze Alloy | Push-Pull | 0.105" (2.67mm) | Active | RoHS Compliant |
| 65823-067 | Amphenol ICC (FCI) | Quickie™ | Shrouded - 4 Wall | Phosphor Bronze Alloy | Latch Lock/Eject Hooks | 0.105" (2.67mm) | Active | Non-compliant |
| 65823-067LF | Amphenol ICC (FCI) | Quickie™ | Shrouded - 4 Wall | Phosphor Bronze Alloy | Latch Lock/Eject Hooks | 0.105" (2.67mm) | Active | RoHS Compliant |
| 65823-069LF | Amphenol ICC (FCI) | Quickie™ | Shrouded - 4 Wall | Phosphor Bronze Alloy | Latch Lock/Eject Hooks | 0.150" (3.81mm) | Active | RoHS Compliant |
| 65823-071 | Amphenol ICC (FCI) | Quickie™ | Shrouded - 4 Wall | Phosphor Bronze Alloy | Latch Lock/Eject Hooks | 0.675" (17.15mm) | Active | Non-compliant |
| 65823-163 | Amphenol ICC (FCI) | Quickie™ | Shrouded - 4 Wall | Phosphor Bronze Alloy | Latch Lock/Eject Hooks, Short | 0.105" (2.67mm) | Active | Non-compliant |
| 65823-165 | Amphenol ICC (FCI) | Quickie™ | Shrouded - 4 Wall | Phosphor Bronze Alloy | Latch Lock/Eject Hooks, Short | 0.150" (3.81mm) | Active | Non-compliant |
| 65823-238 | Amphenol ICC (FCI) | Quickie™ | Shrouded - 4 Wall | Phosphor Bronze Alloy | Latch Lock/Eject Hooks | 0.105" (2.67mm) | Active | Non-compliant |
Engineering Selection Recommendations
For direct replacement of the obsolete 3428-1003, the 3M N3428-5002RB is the primary equivalent. This part maintains the same base series (3000), copper alloy contact material, and push-pull fastening mechanism while upgrading to active product status and ROHS3 compliance. The 4-wall shrouding provides enhanced shielding compared to the original 3-wall design.
The 3M D3428-5002-AR offers an alternative within the 3M product line with active status and ROHS3 compliance, though it uses brass contacts instead of copper alloy. Both 3M options preserve the push-pull fastening mechanism and maintain electrical and mechanical compatibility.
Amphenol ICC (FCI) Quickie™ series parts (65823-019LF, 65823-067LF, 65823-069LF, 65823-163, 65823-165, 65823-238) provide cross-manufacturer alternatives with active product status. The 65823-019LF and 65823-067LF variants offer RoHS compliance. These parts use phosphor bronze alloy contacts and latch lock fastening mechanisms, which differ from the original push-pull design. Selection among Amphenol variants depends on required post length: 0.105" (2.67mm) for standard applications, 0.150" (3.81mm) for extended post depth, or 0.675" (17.15mm) for through-panel mounting.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute with a different fastening mechanism (latch lock instead of push-pull)?
A: Yes. The fastening mechanism does not affect electrical performance or mating compatibility. Latch lock fastening provides positive retention and is functionally equivalent to push-pull for connector engagement and disengagement.
Q: What is the significance of contact post length differences?
A: Contact post length determines how far the pin extends from the connector body. Shorter posts (0.105") suit standard PCB thicknesses, while longer posts (0.150" or 0.675") accommodate thicker substrates or panel-mount applications. Selection depends on your specific board thickness and mounting configuration.
Q: Are phosphor bronze and copper alloy contacts interchangeable?
A: Yes. Both materials meet the electrical and mechanical requirements for this connector class. Phosphor bronze offers slightly different spring characteristics and wear resistance, but both provide equivalent performance for the specified 1.75A current rating and operating temperature range.
Q: Does 4-wall shrouding affect compatibility with the original 3-wall design?
A: No. The 4-wall shrouding is a mechanical enhancement that provides better EMI shielding and keying precision. It does not affect mating compatibility or electrical performance.
Q: What is the difference between RoHS-compliant and non-compliant parts?
A: RoHS compliance indicates the part meets Restriction of Hazardous Substances regulations, eliminating lead and other restricted materials. For new designs and regulated applications, RoHS-compliant parts are required. For legacy system maintenance, non-compliant parts remain functionally equivalent.
Q: Can I mix substitute parts from different manufacturers in the same assembly?
A: Yes. All listed substitutes maintain identical pitch, position count, row spacing, and electrical ratings. However, fastening mechanism differences (push-pull vs. latch lock) may affect connector feel and retention behavior, so consistency within a single assembly is recommended for user experience uniformity.
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