BU200Z-178-HT Equivalent & Substitute Parts

Part Overview

The BU200Z-178-HT is a 20-position DIP socket manufactured by On Shore Technology Inc., designed for IC and transistor applications with 0.3" (7.62mm) row spacing and gold-plated mating contacts. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The socket features surface mount termination with beryllium copper mating contacts and brass post materials, operating across the industrial temperature range of -55°C to 125°C.

Key Parameters

Parameter	Value
Number of Positions	20 (2 x 10)
Row Spacing	0.3" (7.62mm)
Pitch - Mating	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)
Mounting Type	Surface Mount
Termination	Solder
Operating Temperature	-55°C ~ 125°C
Current Rating	1 A
Contact Material - Mating	Beryllium Copper
Contact Material - Post	Brass
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the BU200Z-178-HT is determined by strict alignment of the following parameters:

Position Count & Row Spacing: All substitutes must maintain 20 positions in 2 x 10 configuration with 0.3" (7.62mm) row spacing
Pitch Specifications: Mating pitch and post pitch must both be 0.100" (2.54mm)
Mounting Type: Surface mount termination with solder connection required
Operating Temperature Range: -55°C to 125°C minimum
Contact Material - Mating: Beryllium copper required for mating contacts
Termination Post Material: Brass or brass alloy acceptable
Moisture Sensitivity: MSL 1 (Unlimited) required

The substitute parts are grouped into two categories based on contact finish specifications:

Group 1 - Gold Mating Contact Finish (110-43-320-41-105000, 110-93-320-41-105000, 114-41-320-41-117000, 114-43-320-41-117000, 114-91-320-41-117000, 114-93-320-41-117000): These parts maintain gold plating on mating contacts, matching the original BU200Z-178-HT specification. Variations exist in gold thickness (10.0µin to 30.0µin), post finish (tin or tin-lead), and RoHS compliance status.

Group 2 - Alternative Mating Contact Finishes (214-44-320-01-670800, 214-99-320-01-670800, ICF-320-STL-I, ICF-320-STL-I-TR): These parts use tin or tin-lead mating contact finishes instead of gold, representing functional alternatives where contact finish material differs from the original specification.

Parameter Comparison

Parameter	BU200Z-178-HT	110-43-320-41-105000	110-93-320-41-105000	114-41-320-41-117000	114-43-320-41-117000	114-91-320-41-117000	114-93-320-41-117000	214-44-320-01-670800	214-99-320-01-670800	ICF-320-STL-I	ICF-320-STL-I-TR
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.	Samtec Inc.
Number of Positions	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)
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)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Tin	Tin-Lead	Tin	Tin
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
Contact Material - Post	Brass	Brass Alloy	Brass Alloy	Brass Alloy	Brass Alloy	Brass Alloy	Brass Alloy	Brass Alloy	Brass Alloy	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	Surface Mount
Features	Open Frame	Open Frame	Open Frame	Open Frame	Open Frame	Open Frame	Open Frame	Closed Frame	Closed Frame	Open Frame	Open Frame
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	Not specified	Not specified
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
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	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not specified	Not specified

Engineering Selection Recommendations

For ROHS3 Compliant Applications:

Select from 110-43-320-41-105000, 114-41-320-41-117000, 114-43-320-41-117000, 214-44-320-01-670800, ICF-320-STL-I, or ICF-320-STL-I-TR. These parts maintain ROHS3 compliance matching the original BU200Z-178-HT specification. Among these, 110-43-320-41-105000 and 114-series parts (114-41-320-41-117000, 114-43-320-41-117000) provide gold mating contact finishes identical to the original. The 214-44-320-01-670800 and Samtec ICF series offer alternative contact finishes with closed or open frame configurations.

For Gold Mating Contact Finish Requirement:

Parts 110-43-320-41-105000, 110-93-320-41-105000, 114-41-320-41-117000, 114-43-320-41-117000, 114-91-320-41-117000, and 114-93-320-41-117000 maintain gold plating on mating contacts. Among these, ROHS3-compliant options are 110-43-320-41-105000, 114-41-320-41-117000, and 114-43-320-41-117000.

For Non-Compliant Legacy Applications:

Parts 110-93-320-41-105000, 114-91-320-41-117000, 114-93-320-41-117000, and 214-99-320-01-670800 are available for applications where RoHS non-compliance is acceptable. These parts maintain active product status and current availability.

For Alternative Contact Finishes:

Parts 214-44-320-01-670800 (tin mating finish, closed frame, ROHS3 compliant) and 214-99-320-01-670800 (tin-lead mating finish, closed frame, RoHS non-compliant) provide closed frame construction with alternative contact finishes. Samtec ICF-320-STL-I and ICF-320-STL-I-TR offer tin mating contact finish with open frame design and ROHS3 compliance, with the latter available in tape & reel packaging.

Current Rating Consideration:

All substitute parts except the Samtec ICF series specify 3 A current rating, exceeding the original BU200Z-178-HT specification of 1 A. This represents an upgrade in electrical capacity. Samtec ICF parts do not specify current rating in the provided data.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different mating contact finish (tin instead of gold)?

A: Yes. Parts 214-44-320-01-670800, 214-99-320-01-670800, ICF-320-STL-I, and ICF-320-STL-I-TR use tin or tin-lead mating contact finishes instead of gold. These maintain all other critical parameters including position count, row spacing, pitch specifications, and operating temperature range. Contact finish selection depends on application requirements for corrosion resistance and contact reliability.

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

A: The BU200Z-178-HT features open frame construction. Substitute parts 214-44-320-01-670800 and 214-99-320-01-670800 use closed frame design, which provides additional mechanical support and shielding. All other substitutes maintain open frame construction matching the original specification.

Q: Are all substitute parts RoHS compliant?

A: No. Parts 110-93-320-41-105000, 114-91-320-41-117000, 114-93-320-41-117000, and 214-99-320-01-670800 are RoHS non-compliant. For ROHS3 compliance matching the original BU200Z-178-HT, select from 110-43-320-41-105000, 114-41-320-41-117000, 114-43-320-41-117000, 214-44-320-01-670800, ICF-320-STL-I, or ICF-320-STL-I-TR.

Q: What is the difference between the Mill-Max 110 and 114 series substitutes?

A: Both series maintain identical position count, row spacing, and pitch specifications. The 114 series uses Polycyclohexylenedimethylene Terephthalate (PCT) polyester housing material, while the 110 series uses the same material. Differences exist in gold thickness on mating contacts (10.0µin for 114-41 and 114-91 versus 30.0µin for 114-43 and 114-93) and post finish options (tin or tin-lead).

Q: Does the higher current rating of substitute parts affect compatibility?

A: No. The 3 A current rating specified on substitute parts represents increased electrical capacity compared to the original 1 A specification. This upgrade does not affect mechanical or electrical compatibility for applications requiring 1 A or less. Applications requiring higher current capacity benefit from this specification increase.

Q: What packaging options are available for substitute parts?

A: Mill-Max parts (110 and 114 series, 214 series) are supplied in tube packaging. Samtec ICF-320-STL-I is supplied in bulk packaging, while ICF-320-STL-I-TR is supplied in tape & reel (TR) format. Packaging selection depends on assembly process requirements and volume considerations.

Q: Can I substitute the BU200Z-178-HT with a part having different post material (beryllium copper instead of brass)?

A: Yes. Samtec ICF-320-STL-I and ICF-320-STL-I-TR use beryllium copper post material instead of brass. This maintains electrical and mechanical compatibility while providing alternative material properties. All other critical parameters including mating contact material, position count, and pitch specifications remain aligned.

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