BU080Z-178-HT Equivalent & Substitute Parts

Part Overview

The BU080Z-178-HT is an 8-position DIP socket with 0.3" (7.62mm) row spacing, manufactured by On Shore Technology Inc. This surface mount connector features gold-plated beryllium copper mating contacts and is designed for IC and transistor applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility with the 8 (2 x 4) position DIP configuration, 0.100" (2.54mm) pitch, and surface mount termination requirements.

Key Parameters

Parameter	BU080Z-178-HT
Number of Positions	8 (2 x 4)
Row Spacing	0.3" (7.62mm)
Pitch - Mating	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)
Mounting Type	Surface Mount
Contact Finish - Mating	Gold
Contact Material - Mating	Beryllium Copper
Operating Temperature Range	-55°C ~ 125°C
Current Rating	1 A
Contact Resistance	7mOhm
Termination	Solder
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the BU080Z-178-HT is determined by strict adherence to the following critical parameters:

Essential Compatibility Parameters:

8 (2 x 4) position DIP configuration
0.3" (7.62mm) row spacing
0.100" (2.54mm) mating pitch
0.100" (2.54mm) post pitch
Surface mount termination
Operating temperature range -55°C ~ 125°C
Beryllium copper mating contact material

Acceptable Variations:

Contact finish on mating side (gold or tin-based finishes)
Contact finish thickness on mating contacts
Post contact finish (tin, tin-lead, or copper)
Housing material (PBT, PCT, or polyamide)
Current rating (equal to or greater than 1 A)
Contact resistance (equal to or less than 7mOhm)
Frame type (open or closed)

Substitute parts are grouped by mating contact finish type: gold-plated options (Mill-Max 110 and 114 series, Samtec ICF-308-F-I) and tin or tin-lead options (Mill-Max 214 series).

Parameter Comparison

Parameter	BU080Z-178-HT	110-43-308-41-105000	110-93-308-41-105000	114-41-308-41-117000	114-43-308-41-117000	114-91-308-41-117000	114-93-308-41-117000	214-44-308-01-670800	214-99-308-01-670799	214-99-308-01-670800	ICF-308-F-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.	Mill-Max Manufacturing Corp.	Samtec Inc.
Number of Positions	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)	8 (2 x 4)
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)	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)	0.100" (2.54mm)
Pitch - Post	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)	0.100" (2.54mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Tin	Tin-Lead	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	Beryllium Copper
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	-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	3 A	Not specified
Contact Resistance	7mOhm	Not specified	Not specified	10mOhm	10mOhm	10mOhm	Not specified	Not specified	Not specified	Not specified	Not specified
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For RoHS3 Compliant Applications:

Select from the following active parts that maintain RoHS3 compliance:

110-43-308-41-105000 (Mill-Max, gold mating finish, tin post finish)
114-41-308-41-117000 (Mill-Max, gold mating finish, tin post finish, double row socket)
114-43-308-41-117000 (Mill-Max, gold mating finish, tin post finish, double row socket)
214-44-308-01-670800 (Mill-Max, tin mating finish, tin post finish, closed frame)
ICF-308-F-I (Samtec, gold mating finish, tin post finish)

For Non-RoHS Applications:

The following parts are available for applications where RoHS compliance is not required:

110-93-308-41-105000 (Mill-Max, gold mating finish, tin-lead post finish)
114-91-308-41-117000 (Mill-Max, gold mating finish, tin-lead post finish, double row socket)
114-93-308-41-117000 (Mill-Max, gold mating finish, tin-lead post finish, double row socket)
214-99-308-01-670799 (Mill-Max, tin-lead mating finish, tin-lead post finish, tape & reel packaging)
214-99-308-01-670800 (Mill-Max, tin-lead mating finish, tin-lead post finish, tube packaging)

Gold Mating Contact Finish Options:

For applications requiring gold-plated mating contacts equivalent to the original BU080Z-178-HT:

Mill-Max 110 series (single row socket, open frame)
Mill-Max 114 series (double row socket, open frame)
Samtec ICF-308-F-I (open frame, liquid crystal polymer housing)

Tin or Tin-Lead Mating Contact Finish Options:

For applications where tin or tin-lead mating finishes are acceptable:

Mill-Max 214 series (closed frame design, higher inventory availability)

All substitute parts maintain the critical 8-position DIP configuration, 0.3" row spacing, 0.100" pitch, and -55°C to 125°C operating temperature range required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can I substitute a tin-plated socket (214 series) for the original gold-plated BU080Z-178-HT?

A: Yes, if your application does not require gold mating contacts. The 214 series maintains all critical electrical and mechanical parameters: 8-position DIP, 0.3" row spacing, 0.100" pitch, surface mount termination, and -55°C to 125°C operating temperature. Contact finish selection depends on application requirements for corrosion resistance and signal integrity.

Q: What is the difference between open frame and closed frame sockets?

A: The BU080Z-178-HT features an open frame design. The Mill-Max 214 series offers closed frame construction. Both designs maintain the same electrical and mechanical compatibility. Frame type selection depends on mechanical support requirements and PCB layout constraints.

Q: Are the Mill-Max 114 series double row sockets compatible with the BU080Z-178-HT?

A: Yes. The 114 series maintains the same 8 (2 x 4) position DIP configuration, 0.3" row spacing, 0.100" pitch, and surface mount termination. The designation "double row socket" refers to the internal contact structure, not the external footprint. Mechanical and electrical compatibility is maintained.

Q: What is the significance of the higher current rating (3 A) in substitute parts compared to the original 1 A rating?

A: The substitute parts have a higher current rating specification, which provides additional design margin. A part rated for 3 A can safely handle applications requiring 1 A. This does not affect compatibility; it indicates improved performance capability.

Q: Which substitute part has the best inventory availability?

A: The Mill-Max 214-44-308-01-670800 has the highest inventory level at 70,888 pieces in stock, making it the most readily available option for immediate procurement.

Q: Does the contact resistance difference between the original part (7mOhm) and some substitutes (10mOhm) affect compatibility?

A: The contact resistance specifications provided for substitute parts are either not specified or slightly higher (10mOhm). For most DIP socket applications, this difference is not functionally significant. Verify contact resistance requirements against your specific application specifications.

Q: What packaging options are available for the substitute parts?

A: Substitute parts are available in tube packaging (standard for most Mill-Max and Samtec options) and tape & reel packaging (214-99-308-01-670799). Packaging selection depends on production volume and assembly process requirements.

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