Weidmüller 999379 Terminal Block: Equivalent & Substitute Parts

Part Overview

The Weidmüller 999379 is an 11-position wire-to-board terminal block with 5mm pitch, designed for vertical through-hole mounting on PCBs. This component operates at 10A/300V and accommodates wire gauges from 12-24 AWG using screw-clamping termination. The part is classified as obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications.

Substiute Parts

999379

WeidmüllerIn Stock: 1163999379 Datasheet

Current PartRFQ

ELM119100

Amphenol PCDIn Stock: 1072ELM119100 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Amphenol PCD ELM119100 qualifies as a functional substitute based on the following critical parameters:

• Position count and pitch: Both parts feature 11 positions at 0.197" (5.00mm) spacing
• Electrical ratings: Both support 10A at 300V operation
• Mounting configuration: Both are through-hole mounted with vertical board orientation
• Wire termination compatibility: Both use screw-based clamping mechanisms
• Interlocking feature: Both incorporate side interlocking
• Moisture sensitivity: Both rated MSL 1 (Unlimited)

Differences exist in wire gauge range (ELM119100 extends to 28 AWG), housing material (PBT vs. PA66), and termination mechanism (rising cage clamp vs. clamping yoke), but these do not prevent functional substitution within the specified electrical and mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

The Amphenol PCD ELM119100 is the designated substitute for the obsolete Weidmüller 999379. Selection is justified on the following basis:

• Product status alignment: ELM119100 is active and currently available, addressing the obsolescence of the original part
• Electrical equivalence: Both parts meet identical current (10A) and voltage (300V) specifications
• Mechanical compatibility: Identical pitch, position count, and through-hole mounting ensure PCB layout compatibility
• Compliance certification: ELM119100 carries RoHS compliance, meeting modern regulatory requirements
• Moisture sensitivity: Both parts share MSL 1 rating, indicating equivalent environmental performance

The extended wire gauge range (12-28 AWG vs. 12-24 AWG) and higher maximum operating temperature of the substitute provide additional design margin without introducing incompatibility.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol PCD ELM119100 be used as a direct replacement for the Weidmüller 999379 on existing PCBs?

A: Yes. Both parts share identical pitch (5mm), position count (11), mounting type (through-hole), and mating orientation (vertical). PCB footprints are compatible.

Q: What is the difference between the clamping yoke and rising cage clamp termination methods?

A: Both are screw-based wire termination mechanisms. The clamping yoke uses a tension sleeve, while the rising cage clamp uses a different mechanical arrangement. Both achieve equivalent electrical and mechanical connection within the specified current and voltage ratings.

Q: Does the housing material difference (PA66 vs. PBT) affect substitution?

A: No. Both materials are thermoplastic polymers suitable for terminal block applications. PBT offers slightly different mechanical properties but does not prevent functional substitution within the specified operating temperature range.

Q: Why does the ELM119100 support 28 AWG wire while the 999379 only supports 24 AWG?

A: The rising cage clamp mechanism accommodates a wider wire gauge range. This represents an enhancement and does not restrict substitution for applications using 12-24 AWG wire.

Q: Is the ELM119100 available in the same packaging as the 999379?

A: The ELM119100 is supplied in tray packaging. Verify packaging requirements for your application, as the original part packaging is not specified in available data.

Q: What is the significance of RoHS compliance on the ELM119100?

A: RoHS compliance indicates the substitute meets current environmental and regulatory standards for restricted substances. This is advantageous for new designs and applications subject to RoHS requirements.