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BU180Z-178-HT Equivalent & Substitute Parts
Part Overview
The BU180Z-178-HT is an 18-position DIP socket manufactured by On Shore Technology Inc., designed for surface mount applications with 0.3" (7.62mm) row spacing and gold-plated mating contacts. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The socket accommodates standard DIP integrated circuits with 0.100" (2.54mm) pitch and provides reliable electrical connections through beryllium copper contacts with gold surface finish.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Number of Positions | 18 (2 x 9) |
| Row Spacing | 0.3" (7.62mm) |
| Pitch - Mating | 0.100" (2.54mm) |
| Contact Finish - Mating | Gold |
| Contact Material - Mating | Beryllium Copper |
| Mounting Type | Surface Mount |
| Termination | Solder |
| Operating Temperature Range | -55°C ~ 125°C |
| Current Rating | 1 A |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the BU180Z-178-HT is determined by strict adherence to the following critical parameters:
- Position Count & Row Spacing: All substitutes must maintain 18 positions in a 2 x 9 configuration with 0.3" (7.62mm) row spacing
- Mating Pitch: 0.100" (2.54mm) pitch is mandatory for DIP compatibility
- Mounting Type: Surface mount configuration required
- Contact Material - Mating: Beryllium copper mating contacts
- Termination Method: Solder termination
- Operating Temperature: -55°C ~ 125°C range
- Moisture Sensitivity: MSL 1 (Unlimited)
Substitute parts are grouped by mating contact finish (gold vs. tin vs. tin-lead), housing material composition, and product status (active vs. obsolete). Contact finish thickness, post material composition, and post length variations are secondary parameters that do not prevent substitution when primary parameters align.
Parameter Comparison
| Parameter | BU180Z-178-HT | 110-43-318-41-105000 | 110-93-318-41-105000 | 114-41-318-41-117000 | 114-43-318-41-117000 | 114-91-318-41-117000 | 114-93-318-41-117000 | 214-44-318-01-670800 | 214-99-318-01-670800 | ICF-318-S-I |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | On Shore Technology Inc. | Mill-Max Manufacturing Corp. | Mill-Max Manufacturing Corp. | Mill-Max Manufacturing Corp. | Mill-Max Manufacturing Corp. | Mill-Max Manufacturing Corp. | Mill-Max Manufacturing Corp. | Mill-Max Manufacturing Corp. | Mill-Max Manufacturing Corp. | Samtec Inc. |
| Number of Positions | 18 (2 x 9) | 18 (2 x 9) | 18 (2 x 9) | 18 (2 x 9) | 18 (2 x 9) | 18 (2 x 9) | 18 (2 x 9) | 18 (2 x 9) | 18 (2 x 9) | 18 (2 x 9) |
| Row Spacing | 0.3" (7.62mm) | 0.3" (7.62mm) | 0.3" (7.62mm) | 0.3" (7.62mm) | 0.3" (7.62mm) | 0.3" (7.62mm) | 0.3" (7.62mm) | 0.3" (7.62mm) | 0.3" (7.62mm) | 0.3" (7.62mm) |
| 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) | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Contact Finish - Mating | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Tin | Tin-Lead | Gold |
| Contact Material - Mating | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper | Beryllium Copper |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Features | Open Frame | Open Frame | Open Frame | Open Frame | Open Frame | Open Frame | Open Frame | Closed Frame | Closed Frame | Open Frame |
| Termination | Solder | Solder | 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 | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Current Rating (Amps) | 1 A | 3 A | 3 A | 3 A | 3 A | 3 A | 3 A | 3 A | 3 A | Not specified |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 | Not specified | UL94 V-0 | UL94 V-0 | UL94 V-0 | Not specified | Not specified | UL94 V-0 | Not specified |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | Not specified | RoHS non-compliant | ROHS3 Compliant | RoHS non-compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
All listed substitute parts maintain compatibility with the BU180Z-178-HT through identical mechanical and electrical specifications for position count, row spacing, mating pitch, contact material, and operating temperature range. Selection among substitutes is determined by specific application requirements:
For RoHS3 Compliance Requirements: Parts 110-43-318-41-105000, 114-41-318-41-117000, 114-43-318-41-117000, 214-44-318-01-670800, and ICF-318-S-I meet ROHS3 compliance. Parts 110-93-318-41-105000, 114-93-318-41-117000, and 214-99-318-01-670800 are RoHS non-compliant.
For Gold Mating Contact Finish: Parts 110-43-318-41-105000, 110-93-318-41-105000, 114-41-318-41-117000, 114-43-318-41-117000, 114-91-318-41-117000, 114-93-318-41-117000, and ICF-318-S-I provide gold-plated mating contacts matching the original specification. Parts 214-44-318-01-670800 and 214-99-318-01-670800 feature tin and tin-lead mating finishes respectively.
For Open Frame Configuration: Parts 110-43-318-41-105000, 110-93-318-41-105000, 114-41-318-41-117000, 114-43-318-41-117000, 114-91-318-41-117000, 114-93-318-41-117000, and ICF-318-S-I maintain open frame design. Parts 214-44-318-01-670800 and 214-99-318-01-670800 feature closed frame construction.
For UL94 V-0 Flammability Rating: Parts 110-43-318-41-105000, 114-41-318-41-117000, 114-43-318-41-117000, 114-91-318-41-117000, 214-99-318-01-670799, and ICF-318-S-I carry UL94 V-0 certification.
For Higher Current Capacity: All substitute parts are rated for 3 A, exceeding the original 1 A specification.
For Active Product Status: All listed substitutes are currently in active production, ensuring long-term availability and supply chain continuity.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with tin or tin-lead mating contact finish instead of gold?
A: Tin and tin-lead finishes (214-44-318-01-670800 and 214-99-318-01-670800) provide different electrical and corrosion characteristics compared to gold. These parts maintain mechanical and electrical compatibility through identical position count, row spacing, and pitch specifications. Contact finish selection depends on application-specific requirements for contact resistance, corrosion resistance, and environmental exposure.
Q: What is the difference between open frame and closed frame socket designs?
A: Open frame sockets (110-43-318-41-105000, 114-41-318-41-117000, 114-43-318-41-117000, 114-91-318-41-117000, ICF-318-S-I) provide direct access to contact points. Closed frame sockets (214-44-318-01-670800, 214-99-318-01-670800) feature housing that surrounds the contact area. Both designs maintain identical electrical performance and mechanical compatibility for 18-position DIP applications.
Q: Are all substitute parts RoHS compliant?
A: No. Parts 110-43-318-41-105000, 114-41-318-41-117000, 114-43-318-41-117000, 214-44-318-01-670800, and ICF-318-S-I are ROHS3 compliant. Parts 110-93-318-41-105000, 114-93-318-41-117000, and 214-99-318-01-670800 are RoHS non-compliant. Regulatory requirements determine which parts are suitable for specific applications.
Q: Why do substitute parts have higher current ratings than the original BU180Z-178-HT?
A: All substitute parts are rated for 3 A compared to the original 1 A specification. This represents an improvement in current-carrying capacity while maintaining all other mechanical and electrical parameters. Applications requiring only 1 A operation are fully compatible with these higher-rated substitutes.
Q: What is the significance of the different housing materials used in substitute parts?
A: Substitute parts use either Polycyclohexylenedimethylene Terephthalate (PCT) polyester, Polybutylene Terephthalate (PBT) glass-filled, Liquid Crystal Polymer (LCP), or Polyamide (PA46) nylon materials. All materials maintain the required operating temperature range of -55°C ~ 125°C and UL94 V-0 flammability ratings where specified. Housing material selection does not affect electrical or mechanical compatibility for DIP socket applications.
Q: Can I substitute parts with different post material compositions?
A: Yes. The original BU180Z-178-HT uses brass posts with copper finish. Substitute parts use brass alloy or beryllium copper posts with tin, tin-lead, or other finishes. Post material and finish variations do not affect mating compatibility with standard DIP integrated circuits, as the critical interface is the mating contact surface.
Q: What packaging options are available for substitute parts?
A: Substitute parts are supplied in tube packaging (standard for most parts) or tape & reel (TR) format for 214-99-318-01-670799. Packaging selection depends on production volume and assembly automation requirements but does not affect component functionality.
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