Request Quote
(Ships tomorrow)
Amphenol ICC 78511-403 Rectangular Connector Header - Equivalent & Substitute Parts
Part Overview
The Amphenol ICC 78511-403 is a through-hole rectangular connector header from the BERGSTIK® II series, configured as a 3-position, single-row male pin header with 0.100" (2.54mm) pitch. This connector is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement. The part features unshrouded, board-to-board connectivity with solder termination and push-pull fastening. Substitute parts must maintain electrical and mechanical compatibility while meeting current manufacturing and compliance standards.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Header |
| Contact Type | Male Pin |
| Pitch - Mating | 0.100" (2.54mm) |
| Number of Positions | 3 |
| Number of Rows | 1 |
| Mounting Type | Through Hole |
| Termination | Solder |
| Fastening Type | Push-Pull |
| Contact Shape | Square |
| Insulation Height | 0.100" (2.54mm) |
| Material Flammability Rating | UL94 V-0 |
| Insulation Color | Black |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| ECCN | EAR99 |
| HTSUS | 8536.69.4040 |
Substitute Part Grouping Explanation
Substitution logic for the 78511-403 is based on the following critical parameters that must remain constant across all equivalent parts:
- Pitch - Mating: 0.100" (2.54mm) — determines mechanical and electrical compatibility with mating connectors
- Number of Positions: 3 — defines circuit connectivity requirements
- Number of Rows: 1 — establishes physical layout constraints
- Connector Type: Header — specifies the functional role in board-to-board connections
- Contact Type: Male Pin — ensures proper mating with female receptacles
- Mounting Type: Through Hole — maintains PCB assembly compatibility
- Termination: Solder — preserves soldering process compatibility
- Fastening Type: Push-Pull — ensures mechanical retention method
- Contact Shape: Square — maintains contact geometry for proper engagement
- Material Flammability Rating: UL94 V-0 — preserves safety compliance
Substitute parts are grouped into two categories:
Category 1: Direct Amphenol ICC Equivalents — Parts from the same manufacturer with identical core specifications but updated product status and compliance certifications.
Category 2: Cross-Manufacturer Substitutes — Parts from Molex and 3M that maintain all critical electrical and mechanical parameters while offering alternative sourcing and compliance options.
Parameter Comparison
| Parameter | 78511-403 | 78511-403HLF | 0423753604 | 2303-6211-TG | 929700-11-03-RK | 929705-01-03-EU |
|---|---|---|---|---|---|---|
| Manufacturer | Amphenol ICC | Amphenol ICC | Molex | 3M | 3M | 3M |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| Connector Type | Header | Header | Header, Breakaway | Header | Header, Breakaway | Header, Breakaway |
| Contact Type | Male Pin | Male Pin | Male Pin | Male Pin | Male Pin | Male Pin |
| 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) |
| Number of Positions | 3 | 3 | 3 | 3 | 3 | 3 |
| Number of Rows | 1 | 1 | 1 | 1 | 1 | 1 |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder |
| Fastening Type | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull | Push-Pull |
| Contact Shape | Square | Square | Square | Square | Square | Square |
| Contact Length - Mating | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.380" (9.65mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) |
| Contact Length - Post | 0.120" (3.05mm) | 0.120" (3.05mm) | 0.070" (1.78mm) | 0.120" (3.05mm) | 0.125" (3.18mm) | 0.110" (2.79mm) |
| Overall Contact Length | 0.538" (13.67mm) | 0.538" (13.67mm) | 0.540" (13.72mm) | 0.538" (13.67mm) | 0.543" (13.80mm) | 0.528" (13.42mm) |
| Insulation Height | 0.100" (2.54mm) | 0.100" (2.54mm) | 0.090" (2.29mm) | 0.100" (2.54mm) | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Contact Finish - Mating | Tin | Tin | Tin | Gold | Tin | Gold |
| Contact Material | Phosphor Bronze | Phosphor Bronze | Not specified | Copper Alloy | Copper Alloy | Copper Alloy |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| Insulation Color | Black | Black | Black | Black | Black | Black |
| Operating Temperature | Not specified | -65°C ~ 125°C | Not specified | -55°C ~ 105°C | -40°C ~ 105°C | -40°C ~ 105°C |
| Current Rating (Amps) | Not specified | 5A | Not specified | 3A | 2.5A | 2.5A |
| RoHS Status | RoHS non-compliant | RoHS Compliant | ROHS3 Compliant | RoHS non-compliant | RoHS Compliant | RoHS Compliant |
| REACH Status | REACH Unaffected | REACH Affected | REACH Unaffected | REACH Affected | REACH Unaffected | REACH Unaffected |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Primary Recommendation: Amphenol ICC 78511-403HLF
The 78511-403HLF is the direct active equivalent from Amphenol ICC. It maintains identical mechanical and electrical specifications to the obsolete 78511-403 while offering RoHS compliance and active product status. This part is the preferred choice for direct replacement in existing designs without modification. Current inventory: 912 units.
Secondary Recommendation: 3M 929705-01-03-EU
The 929705-01-03-EU provides cross-manufacturer compatibility with RoHS compliance and REACH unaffected status. It features gold-plated mating contacts and operates across -40°C to 105°C. This option is suitable for designs requiring enhanced corrosion resistance or when Amphenol ICC sourcing is constrained. Current inventory: 3031 units.
Alternative Recommendation: Molex 0423753604
The Molex 0423753604 from the KK254 series offers ROHS3 compliance and breakaway connector capability. Minor dimensional variations exist in contact length and insulation height. This option is appropriate for applications where breakaway functionality provides assembly or serviceability benefits. Current inventory: 722 units.
Compliance Consideration
For applications requiring RoHS compliance, select from: 78511-403HLF, 0423753604, 929700-11-03-RK, or 929705-01-03-EU. The original 78511-403 is RoHS non-compliant and unsuitable for new designs subject to RoHS regulations.
Frequently Asked Questions (FAQ)
Q: Can the 78511-403 be directly replaced with the 78511-403HLF?
A: Yes. The 78511-403HLF is the active equivalent with identical core specifications. The primary differences are product status (active vs. obsolete) and RoHS compliance. No design modifications are required.
Q: What are the key differences between Amphenol ICC and 3M substitutes?
A: Amphenol ICC 78511-403HLF maintains phosphor bronze contacts with tin finish. 3M 929705-01-03-EU uses copper alloy contacts with gold finish, offering enhanced corrosion resistance. Both maintain 0.100" pitch and 3-position configuration. Contact finish selection depends on application environment and corrosion requirements.
Q: Are there dimensional compatibility issues with cross-manufacturer substitutes?
A: Minor variations exist in contact post length and overall contact length across manufacturers. The Molex 0423753604 has a shorter contact post (0.070" vs. 0.120") and reduced insulation height (0.090" vs. 0.100"). These differences may affect PCB layout and mating depth. Verify PCB design compatibility before substitution.
Q: Which substitute offers the widest operating temperature range?
A: The Amphenol ICC 78511-403HLF operates from -65°C to 125°C, providing the broadest temperature specification. 3M parts operate from -40°C to 105°C. Select based on application thermal requirements.
Q: What is the difference between RoHS compliant and RoHS non-compliant parts?
A: RoHS compliant parts (78511-403HLF, 0423753604, 929700-11-03-RK, 929705-01-03-EU) meet Restriction of Hazardous Substances regulations and are required for products sold in regulated markets. The original 78511-403 is RoHS non-compliant and restricted from new designs in regulated regions.
Q: Can I use 929705-06-03-EU as a substitute?
A: The 929705-06-03-EU has significantly longer contact posts (0.710" vs. 0.120") and overall contact length (1.128" vs. 0.538"), making it incompatible with standard PCB designs for the 78511-403. This part is suitable only for applications requiring extended post length.
Q: What is the current rating difference between substitutes?
A: The 78511-403HLF supports 5A, while 3M 929700-11-03-RK and 929705-01-03-EU support 2.5A. For applications requiring higher current capacity, the Amphenol ICC 78511-403HLF is the appropriate choice.
Q: Are all substitutes available in bulk packaging?
A: Most substitutes are available in bulk packaging. The 3M 2303-6211-TB and 2303-6211-TP are available without specified packaging. Confirm packaging requirements with supplier before procurement.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts