WR-PHD 2.54 MM SOCKET HEADER 61300311821 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 61300311821 is a 3-position header connector with 0.100" (2.54mm) pitch, designed for board-to-board applications using through-hole solder termination. This connector features female socket contacts with gold plating and operates across the industrial temperature range of -40°C to 105°C. The part is currently active in production with 1455 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring compatible rectangular connectors with identical electrical and mechanical specifications.

Substiute Parts

61300311821

Würth ElektronikIn Stock: 150961300311821 Datasheet

Current PartRFQ

RS1-03-G

Adam TechIn Stock: 8517RS1-03-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 61300311821 are identified based on strict equivalence of critical electrical and mechanical parameters. The substitution logic is based on the following matching criteria:

Primary Matching Parameters:

• Number of positions: 3
• Pitch - mating: 0.100" (2.54mm)
• Mounting type: Through hole
• Termination: Solder
• Current rating: 3A
• Voltage rating: 250VAC
• Operating temperature range: -40°C to 105°C
• Contact finish - mating: Gold
• Insulation material: Polybutylene Terephthalate (PBT)
• Material flammability rating: UL94 V-0
• RoHS compliance: ROHS3 Compliant
• Fastening type: Push-Pull

The Adam Tech RS1-03-G meets all primary matching parameters and qualifies as a direct substitute. Both connectors support identical electrical loads, temperature ranges, and compliance certifications. The contact type variation (female socket versus forked) and contact material difference (copper alloy versus brass) remain within acceptable substitution boundaries for board-to-board interconnect applications.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 61300311821 and Adam Tech RS1-03-G are active production parts with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The substitution is supported by identical electrical specifications (3A current rating, 250VAC voltage rating), matching operating temperature range (-40°C to 105°C), and equivalent mechanical compatibility (3-position, 2.54mm pitch, through-hole solder termination).

The Adam Tech RS1-03-G offers higher inventory availability (8408 units versus 1455 units), which may provide supply chain advantages for high-volume applications. Both parts maintain UL94 V-0 flammability ratings and MSL 1 moisture sensitivity levels, indicating equivalent reliability characteristics for industrial and commercial applications.

The minor dimensional variation in contact length post (0.122" versus 0.118") and insulation material composition (glass-filled PBT in the substitute) do not affect functional compatibility in standard board-to-board interconnect configurations. Both connectors support identical push-pull fastening mechanisms and gold-plated mating contacts for reliable electrical connection.

Frequently Asked Questions (FAQ)

Q: Can the Adam Tech RS1-03-G directly replace the Würth Elektronik 61300311821 in existing designs?

A: Yes. Both connectors meet identical electrical specifications (3A, 250VAC), operate across the same temperature range (-40°C to 105°C), and support the same 2.54mm pitch through-hole solder termination. The contact type variation (female socket versus forked) and contact material difference (copper alloy versus brass) do not prevent functional substitution in board-to-board applications.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: number of positions (3), mating pitch (0.100" / 2.54mm), mounting type (through hole), termination method (solder), current rating (3A), voltage rating (250VAC), operating temperature range (-40°C to 105°C), contact finish (gold), insulation material (PBT), flammability rating (UL94 V-0), and fastening type (push-pull). All parameters match between the main part and substitute.

Q: Are there compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, classified as EAR99, and share the same HTSUS code (8536.69.4040). Both maintain UL94 V-0 flammability ratings and MSL 1 moisture sensitivity levels, indicating equivalent compliance status for regulatory and quality requirements.

Q: What is the difference in packaging between these connectors?

A: The Würth Elektronik 61300311821 is supplied in bag packaging, while the Adam Tech RS1-03-G is supplied in box packaging. This difference affects only storage and handling procedures and does not impact electrical or mechanical performance.

Q: Does the glass-filled PBT insulation material in the Adam Tech part affect performance?

A: The glass-filled PBT composition in the Adam Tech RS1-03-G provides enhanced mechanical strength and thermal stability compared to standard PBT. Both materials maintain UL94 V-0 flammability ratings and support identical operating temperature ranges. The glass-filled variant does not negatively affect substitution compatibility.

Q: What is the significance of the contact length post difference (0.122" versus 0.118")?

A: The 0.004" (0.10mm) difference in contact post length is within standard manufacturing tolerances for 2.54mm pitch connectors and does not affect mating compatibility or electrical performance in standard through-hole PCB applications.