TE Connectivity Erni 254926 DIN C2 48-Position Backplane Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity Erni 254926 is a 48-position DIN C/2 (1/2 C) backplane connector receptacle with female sockets, designed for through-hole mounting applications. This connector features gold-plated contacts, press-fit termination, and operates across an industrial temperature range of -55°C to 125°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Connector Type	Receptacle, Female Sockets
Number of Positions	48
Pitch	0.100" (2.54mm)
Number of Rows	3
Style	C/2 (1/2 C)
Level, Class	2
Mounting Type	Through Hole
Termination	Press-Fit
Contact Finish	Gold
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TE Connectivity Erni 254926 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Connector type: Receptacle with female sockets
Position count: 48 positions
Contact pitch: 0.100" (2.54mm)
Row configuration: 3 rows
DIN style: C/2 (1/2 C)
Class level: 2
Mounting method: Through hole
Termination technology: Press-fit
Contact material finish: Gold plating
Operating temperature range: -55°C to 125°C
Flammability compliance: UL94 V-0
Environmental compliance: ROHS3 compliant

The TE Connectivity AMP Connectors part number 5535034-5 satisfies all mandatory parameters and qualifies as a direct functional equivalent for the obsolete 254926 connector.

Parameter Comparison

Parameter	TE Connectivity Erni 254926	TE Connectivity AMP 5535034-5	Compatibility
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets	Match
Number of Positions	48	48	Match
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Match
Number of Rows	3	3	Match
Style	C/2 (1/2 C)	C/2 (1/2 C)	Match
Level, Class	2	2	Match
Mounting Type	Through Hole	Through Hole	Match
Termination	Press-Fit	Press-Fit	Match
Contact Finish	Gold	Gold	Match
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	Match
Material Flammability Rating	UL94 V-0	UL94 V-0	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Match
Product Status	Obsolete	Active	Substitute is active

Engineering Selection Recommendations

The TE Connectivity AMP Connectors part number 5535034-5 is the qualified substitute for the obsolete TE Connectivity Erni 254926. Selection of this substitute is supported by the following engineering factors:

Product Status: The 254926 is classified as obsolete, while the 5535034-5 maintains active product status with current manufacturing support and availability.

Compliance Alignment: Both connectors maintain identical compliance certifications including ROHS3 compliance, UL94 V-0 flammability rating, and unlimited moisture sensitivity level (MSL 1).

Electrical and Mechanical Equivalence: All critical parameters including connector type, position count, pitch, row configuration, DIN style classification, mounting method, termination technology, contact finish, and operating temperature range are identical between the two parts.

Supply Continuity: The 5535034-5 is available in active inventory, ensuring supply chain continuity for replacement and new design applications.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity AMP 5535034-5 be used as a direct replacement for the TE Connectivity Erni 254926?

A: Yes. The 5535034-5 is a direct functional equivalent. Both connectors share identical specifications across all critical parameters including position count, pitch, row configuration, mounting type, termination method, contact finish, operating temperature range, and compliance certifications.

Q: What is the primary reason for substitution?

A: The TE Connectivity Erni 254926 is classified as obsolete. The TE Connectivity AMP 5535034-5 is an active product with current manufacturing support and inventory availability.

Q: Are there any differences in insulation material between these connectors?

A: The 254926 specifies polybutylene terephthalate (PBT) glass-filled insulation, while the 5535034-5 specifies polymer thermoplastic glass-filled insulation. Both materials meet the identical UL94 V-0 flammability requirement and support the same operating temperature range.

Q: Do both connectors support the same contact pitch and position configuration?

A: Yes. Both connectors feature 48 positions arranged in 3 rows with a 0.100" (2.54mm) pitch in the C/2 (1/2 C) DIN style configuration.

Q: What is the difference in series designation between these parts?

A: The 254926 belongs to the DIN series, while the 5535034-5 belongs to the Eurocard series. Despite different series designations, both connectors maintain identical mechanical and electrical specifications for the 48-position C/2 configuration.

Q: Are the packaging formats different?

A: The 254926 packaging is not specified in available documentation. The 5535034-5 is supplied in bulk packaging. Confirm packaging requirements with your procurement specification.

Q: Do both connectors meet the same environmental compliance standards?

A: Yes. Both connectors are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level) and UL94 V-0 flammability rating. The 254926 is REACH unaffected, while the 5535034-5 has vendor-undefined REACH status.

Q: What is the contact finish thickness specification for the 5535034-5?

A: The 5535034-5 specifies a contact finish thickness of 49.3µin (1.25µm). The 254926 contact finish thickness is not specified in available documentation.

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