WR-PHD 61301211821 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik WR-PHD 61301211821 is a 12-position receptacle connector with 0.100" (2.54mm) pitch designed for board-to-board applications. This through-hole mounted connector features gold-plated forked contacts, solder termination, and push-pull fastening. The component is classified as Active product status with full inventory availability. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to component unavailability, supply chain constraints, or design flexibility within established parameter tolerances.

Substiute Parts

61301211821

Würth ElektronikIn Stock: 119361301211821 Datasheet

Current PartRFQ

RS1-12-G

Adam TechIn Stock: 1748RS1-12-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WR-PHD 61301211821 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Receptacle
• Number of Positions: 12
• Pitch - Mating: 0.100" (2.54mm)
• Contact Type: Forked
• Mounting Type: Through Hole
• Termination: Solder
• Current Rating: 3A
• Voltage Rating: 250VAC
• Contact Finish - Mating: Gold
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

The Adam Tech RS1-12-G meets all mandatory matching parameters and qualifies as a direct substitute. Variations in secondary parameters such as insulation height tolerance, contact post length, operating temperature upper limit, and insulation material composition (glass-filled variant) do not preclude substitution when primary electrical and mechanical specifications align.

Parameter Comparison

Engineering Selection Recommendations

Both the WR-PHD 61301211821 and RS1-12-G connectors satisfy the core electrical and mechanical requirements for 12-position, 2.54mm pitch board-to-board receptacle applications. Selection between these components is based on the following engineering criteria:

WR-PHD 61301211821 (Würth Elektronik):

• Extended operating temperature range to 125°C provides thermal margin for high-temperature environments
• Copper alloy contact material
• Standard PBT insulation material
• Product Status: Active

RS1-12-G (Adam Tech):

• Operating temperature range to 105°C suitable for standard industrial applications
• Brass contact material
• Glass-filled PBT insulation material provides enhanced mechanical rigidity
• Product Status: Active
• Higher inventory availability (1669 Pcs vs. 1115 Pcs)

Both components maintain ROHS3 compliance, UL94 V-0 flammability rating, and identical electrical specifications (3A current rating, 250VAC voltage rating). The contact post length variation (0.122" vs. 0.118") and operating temperature range difference represent secondary design considerations that do not affect functional interchangeability in standard applications operating below 105°C.

Frequently Asked Questions (FAQ)

Q: Can the RS1-12-G substitute for the WR-PHD 61301211821 in all applications?

A: The RS1-12-G is functionally equivalent for applications with operating temperatures up to 105°C. Applications requiring sustained operation above 105°C require the WR-PHD 61301211821 due to its extended temperature rating to 125°C.

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

A: The contact post length variation of 0.004" (0.10mm) falls within standard PCB through-hole tolerance ranges and does not affect mating compatibility or electrical performance in standard board-to-board configurations.

Q: Are the insulation materials interchangeable?

A: Both connectors use Polybutylene Terephthalate (PBT) as the base insulation material. The RS1-12-G variant includes glass reinforcement, which enhances mechanical rigidity without affecting electrical properties or mating compatibility.

Q: Do the different contact materials (Copper Alloy vs. Brass) affect performance?

A: Both copper alloy and brass contacts provide equivalent electrical conductivity and corrosion resistance when gold-plated. The contact material difference does not impact electrical performance or reliability in standard applications.

Q: What packaging differences exist between these parts?

A: The WR-PHD 61301211821 is supplied in Tray packaging, while the RS1-12-G is supplied in Box packaging. Packaging format does not affect component functionality or performance.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the WR-PHD 61301211821 and RS1-12-G are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Can these connectors be used interchangeably on the same PCB assembly?

A: Yes. Both connectors share identical pitch (2.54mm), position count (12), mounting type (through hole), and termination method (solder), enabling direct PCB footprint compatibility.