Request Quote
(Ships tomorrow)
3M 400-028-050 DIP Socket 28-Position Equivalent & Substitute Parts
Part Overview
The 3M 400-028-050 is a 28-position DIP socket with 0.6" row spacing, gold-plated contacts, and through-hole mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The socket accommodates standard 28-pin DIP integrated circuits with 0.100" pitch mating contacts.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 400-028-050 |
| Manufacturer | 3M |
| Category | Sockets for ICs, Transistors |
| Type | DIP, 0.6" (15.24mm) Row Spacing |
| Number of Positions | 28 (2 x 14) |
| Pitch - Mating | 0.100" (2.54mm) |
| Contact Finish - Mating | Gold |
| Contact Finish Thickness - Mating | 8.00µin (0.203µm) |
| Mounting Type | Through Hole |
| Features | Open Frame |
| Pitch - Post | 0.100" (2.54mm) |
| Contact Finish - Post | Gold |
| Contact Finish Thickness - Post | 8.00µin (0.203µm) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the 3M 400-028-050 is determined by the following critical parameters:
- Position Count & Row Spacing: 28 positions (2 x 14) with 0.6" row spacing
- Pitch - Mating: 0.100" (2.54mm) contact spacing
- Mounting Type: Through hole configuration
- Contact Finish - Mating: Gold plating on mating contacts
- Mounting Compatibility: Open frame design with solder termination posts
All substitute parts listed maintain these core electrical and mechanical parameters. Variations in post finish (gold, tin, or tin-lead), post length, and housing material do not affect functional compatibility with standard 28-pin DIP integrated circuits.
Parameter Comparison
| Part Number | Manufacturer | Positions | Row Spacing | Pitch - Mating | Contact Finish - Mating | Mounting Type | Product Status | Current Rating | Operating Temperature |
|---|---|---|---|---|---|---|---|---|---|
| 400-028-050 | 3M | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Obsolete | — | — |
| 110-11-628-41-001000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
| 110-13-628-41-801000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
| 110-43-628-41-605000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
| 110-43-628-41-801000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
| 110-83-628-41-530000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Obsolete | 3 A | -55°C ~ 125°C |
| 110-93-628-41-605000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
| 110-93-628-41-801000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
| 111-41-628-41-001000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
| 111-91-628-41-001000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
| 115-41-628-41-001000 | Mill-Max | 28 (2 x 14) | 0.6" | 0.100" | Gold | Through Hole | Active | 3 A | -55°C ~ 125°C |
Engineering Selection Recommendations
Primary Recommendation for Active Production:
The Mill-Max 110-13-628-41-801000 and 110-93-628-41-801000 are the preferred substitutes. Both are active products with ROHS3 compliance (110-13) or RoHS non-compliant status (110-93), feature decoupling capacitor integration, and maintain full electrical and mechanical compatibility with the 3M 400-028-050.
Alternative Active Options:
- 110-11-628-41-001000: Active status, ROHS3 compliant, minimal gold plating thickness (10.0µin)
- 110-43-628-41-801000: Active status, ROHS3 compliant, tin post finish, decoupling capacitor feature
- 110-93-628-41-605000: Active status, tin-lead post finish, RoHS non-compliant
- 111-41-628-41-001000: Active status, ROHS3 compliant, extended post length (0.170")
- 111-91-628-41-001000: Active status, tin-lead post finish, extended post length (0.170")
- 115-41-628-41-001000: Active status, ROHS3 compliant, shortest post length (0.108")
Obsolete Alternative:
The Mill-Max 110-83-628-41-530000 maintains functional compatibility but carries obsolete product status. This part is suitable only for legacy system maintenance where active alternatives are unavailable.
Compliance Considerations:
For new designs requiring RoHS3 compliance, select from: 110-11-628-41-001000, 110-13-628-41-801000, 110-43-628-41-801000, 111-41-628-41-001000, or 115-41-628-41-001000. For applications without RoHS restrictions, 110-93-628-41-605000 and 110-93-628-41-801000 offer tin-lead post finishes.
Frequently Asked Questions (FAQ)
Q: Can any of these substitute parts directly replace the 3M 400-028-050 without PCB modification?
A: Yes. All listed Mill-Max substitutes maintain identical 28-position DIP configuration, 0.6" row spacing, 0.100" mating pitch, and through-hole mounting. PCB footprints are compatible. Variations in post length (0.108" to 0.170") and post finish do not affect functional compatibility with standard DIP integrated circuits.
Q: What is the difference between gold, tin, and tin-lead post finishes?
A: Post finish affects solder joint formation and long-term reliability in specific environments. Gold posts (110-11, 110-13, 110-43, 110-93 with gold finish) provide superior corrosion resistance. Tin posts (110-43-628-41-605000, 111-41-628-41-001000, 115-41-628-41-001000) offer standard solderability. Tin-lead posts (110-83, 110-93-628-41-605000, 110-93-628-41-801000, 111-91) are legacy finishes. All are functionally compatible with the original part.
Q: Why do some parts have different post lengths?
A: Post length accommodates varying PCB thicknesses and solder fillet requirements. The 3M 400-028-050 does not specify post length. Mill-Max alternatives range from 0.108" to 0.170". Standard PCB thickness (0.062") is compatible with all post lengths listed.
Q: What does "decoupling capacitor" feature mean?
A: Parts 110-13-628-41-801000 and 110-43-628-41-801000 include integrated decoupling capacitors for noise suppression. This feature does not affect mechanical compatibility and provides additional circuit protection. Non-capacitor versions function identically for applications not requiring this feature.
Q: Are there RoHS compliance differences between substitutes?
A: Yes. Parts 110-11-628-41-001000, 110-13-628-41-801000, 110-43-628-41-801000, 111-41-628-41-001000, and 115-41-628-41-001000 are ROHS3 compliant. Parts 110-93-628-41-605000 and 110-93-628-41-801000 are RoHS non-compliant due to tin-lead post finishes. Select based on regulatory requirements for your application.
Q: Which substitute offers the best long-term availability?
A: Mill-Max 110-13-628-41-801000 and 110-93-628-41-801000 show the highest inventory levels (1,239 and 1,177 units respectively) and active product status, indicating sustained manufacturing support.
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