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HomeProductsConnectors, InterconnectsTerminal Blocks - Headers, Plugs and Sockets1638680000
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1638680000 - Weidmüller

Manufacturer Part Number
1638680000
Manufacturer
Weidmuller
Allelco Part Number
98D-1638680000
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
30,170 pcs available, New & Original
Parts Description
TERM BLOCK PLUG 15POS 3.5MM
Package
Bulk
Data sheet
1638680000.pdf
RoHs Status
RoHS Compliant
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Our certification
In stock: 30170
  • Unit Price: $10.155
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $10.155 $10.16
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

1638680000 Tech Specifications
Weidmüller - 1638680000 technical specifications, attributes, parameters and parts with similar specifications to Weidmüller - 1638680000

Product Attribute Attribute Value
Manufacturer Weidmuller
Wire Strip Length 6mm
Wire Gauge or Range - mm² 0.2-1.5mm²
Wire Gauge or Range - AWG 14-28 AWG
Voltage - UL 300 V
Voltage - IEC 320 V
Type Plug, Female Sockets
Torque - Screw 0.2-0.25 Nm (1.7-2.2 Lb-In)
Termination Style Screw - Clamping Yoke (Tension Sleeve)
Series Omnimate BL
Screw Size M2
Positions Per Level 15
Plug Wire Entry 90°
Pitch 0.138' (3.50mm)
Package Bulk
Operating Temperature -50°C ~ 100°C
Product Attribute Attribute Value
Number of Positions 15
Number of Levels 1
Mounting Type Free Hanging (In-Line)
Material Flammability Rating UL94 V-0
Insulation Height 0.884' (22.45mm)
Ingress Protection IP20
Housing Material Polybutylene Terephthalate (PBT)
Header Orientation -
Features -
Current - UL 8 A
Current - IEC 12A
Contact Tail Length -
Contact Mating Finish Tin
Contact Material Copper Alloy
Color Orange

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8536.69.4040

Frequently Asked Questions(FAQ)

What wire gauges are compatible with the Weidmüller 1638680000 terminal block, and how does the 0.2-1.5mm² range translate to practical AWG selection?
The Weidmüller 1638680000 accepts 14-28 AWG wire, corresponding to 0.2-1.5mm² cross-section. For design-in purposes, this range covers both signal-level interconnects (28 AWG, ~0.08mm²) and moderate power distribution circuits (14 AWG, ~2.08mm²). The practical upper limit of 1.5mm² reflects the screw-clamping mechanism's mechanical holding capacity; larger conductors risk incomplete insertion or excessive pressure on the contact structure. For 12A IEC-rated applications, 16 AWG (1.31mm²) provides optimal current density without requiring over-torquing the M2 screw assembly.
How do the IEC 12A and UL 8A ratings differ for the Weidmüller 1638680000, and which standard applies to my application?
The Weidmüller 1638680000 carries dual certification: 12A at 320V under IEC standards and 8A at 300V under UL standards. This 33% current derating reflects UL's more conservative thermal modeling and contact resistance assumptions in fault conditions. Choose IEC ratings (12A/320V) for industrial control systems, machinery, and non-North American markets. Apply UL ratings (8A/300V) for equipment destined for North American markets, medical devices, or installations requiring UL certification. Thermal dissipation improves with lower ambient temperature; the operating range of -50°C to 100°C means the 1638680000 can sustain higher continuous currents in sub-zero environments but requires derated operation above 70°C.
Why does the Weidmüller 1638680000 specify a 6mm wire strip length, and what happens if I deviate from this requirement?
The 6mm wire strip length on the Weidmüller 1638680000 is optimized for the screw-clamping yoke mechanism to achieve full contact pressure without damaging insulation. Insufficient stripping (<5mm) leaves insulation material within the clamping zone, preventing reliable electrical contact and increasing contact resistance to unmeasurable levels. Excessive stripping (>7mm) exposes bare conductor beyond the contact module, creating arcing paths and corrosion risk in humid or contaminated environments. The M2 screw torque specification of 0.2-0.25 Nm (1.7-2.2 Lb-In) assumes this 6mm geometry; over-torquing to compensate for incorrect strip length can permanently deform the contact spring or strip the M2 threads.
Can the Weidmüller 1638680000 be directly substituted with the 1638910000 variant, or are there functional differences?
The Weidmüller 1638910000 is listed as a substitute for the 1638680000, but substitution requires verification of mechanical and electrical compatibility in your assembly. Both units are Omnimate BL series 15-position blocks with 3.5mm pitch, but the 1638910000 may differ in wire entry angle, contact finish, or insulation height. The 1638680000 features 90° free-hanging entry specifically suited to in-line panel-mount applications where wires approach horizontally. Before design substitution, cross-reference the 1638910000 datasheet for insertion force, mating cycle life, and connector keying—differences here could necessitate assembly tooling changes or signal integrity re-validation.
What insertion and extraction forces should I specify for automated assembly equipment when mating to the Weidmüller 1638680000?
The Weidmüller 1638680000 does not publish explicit insertion or extraction force values in standard datasheets, requiring empirical measurement or consultation with field application engineers. Typical Omnimate BL series plugs exhibit 2-5N insertion force per contact due to the spring-loaded female socket design and tin-plated contact finish. For 15-position connectors, total insertion force ranges 30-75N depending on wear state and manufacturing lot. Automated insertion equipment should incorporate force-feedback or soft-insertion logic to prevent over-driving and damaging the housing or contact tails. Extraction forces are typically lower (1-3N per contact) due to spring relaxation, but sudden pull testing can break wire leads if not performed axially.
How does the UL94 V-0 flammability rating of the Weidmüller 1638680000 housing affect fire safety in control cabinets?
The Weidmüller 1638680000 housing material (polybutylene terephthalate, PBT) meets UL94 V-0, meaning it self-extinguishes within 10 seconds after flame removal and generates minimal dripping. This rating prevents the connector from becoming a secondary ignition source in cabinet fires initiated by arc faults or adjacent component failure. However, UL94 V-0 does not make the connector fireproof; in high-fault-current scenarios (>5kA), the tin contact finish can oxidize or fuse, creating arcing plasma that can still propagate. For Class A fire-rated enclosures, the 1638680000 must be combined with appropriate arc-suppression resistors, surge protection, and spacing per IEC 61439-1 cabinet assembly standards.
What is the practical impact of the IP20 ingress protection rating on the Weidmüller 1638680000 for outdoor or washdown applications?
The Weidmüller 1638680000 carries IP20 protection, meaning it resists contact with solid objects >12mm but provides no water ingress protection. In outdoor industrial settings or food-processing washdown areas, moisture and salt spray will penetrate the unmated connector cavity, corroding the tin-plated copper alloy contacts and degrading insulation resistance. The orange PBT housing lacks conformal coating or hydrophobic additives. For outdoor or wet environments, the 1638680000 must be either mated continuously, stored in sealed enclosures, or supplemented with silica-gel desiccant cartridges. Specifications of 320V at 12A assume dry-air conditions; humidity above 85% RH can reduce the creepage distance across the 22.45mm insulation height and risk tracking failure.
Why is the Weidmüller 1638680000 rated at only 12A IEC when similar 3.5mm-pitch connectors support higher currents, and what thermal factors limit throughput?
The 12A IEC rating on the Weidmüller 1638680000 reflects the contact resistance (typically 10-20 mΩ per contact pair) and thermal dissipation constraints of the screw-clamping yoke design. Single-contact I²R losses at 12A reach ~1.4-2.8W per position; across 15 positions carrying full load, total dissipation approaches 21-42W. The PBT housing exhibits low thermal conductivity (~0.25 W/m·K), creating a junction-to-ambient gradient of 40-80°C under full-load conditions. Prolonged operation above 12A causes contact temperature to exceed 120°C, accelerating diffusion bonding of tin plating and increasing creep risk under cyclic thermal stress. Connectors with lower-resistance gold plating can achieve higher currents, but the 1638680000 uses tin for cost and environmental compliance, trading current capacity for RoHS compliance and assembly economics.
How do the M2 screw torque limits (0.2-0.25 Nm) on the Weidmüller 1638680000 compare to field assembly practices, and what is the risk of under- or over-torquing?
The M2 screw on the Weidmüller 1638680000 has a very narrow torque window. Under-torquing (<0.2 Nm) leaves the clamping yoke insufficiently compressed, resulting in incomplete contact pressure, high contact resistance (>100 mΩ), and potential intermittent disconnections under vibration or thermal cycling. Over-torquing (>0.25 Nm) permanently deforms the spring mechanism or strips the M2 threads, rendering the position unusable. Field technicians often use hand tools (screwdrivers) lacking torque feedback, making this specification difficult to verify. Best practice requires calibrated torque drivers with audible feedback or torque-limiting bits. The tight tolerance reflects the lightweight design of the Omnimate BL series; heavier connectors (e.g., Phoenix Contact COMBICON) use M3 or M4 screws with wider torque ranges (0.5-1.0 Nm), offering more forgiveness.
What is the expected mating cycle life of the Weidmüller 1638680000, and how does it degrade with repeated hot-swapping?
The Weidmüller 1638680000 is not rated for hot-swap duty; its screw-clamping contact design assumes mating occurs under de-energized conditions. Under normal de-energized mating, Omnimate BL series plugs typically achieve 500-1,000 mating cycles before tin-plated contact wear becomes visible. Hot-swapping (mating under load) introduces arcing during insertion, causing contact craters and accelerating wear; cycle life drops to 50-200 cycles. At 12A switching load, contact erosion can reach 10-50 µm per cycle. For applications requiring frequent reconfiguration, consider hermaphroditic connectors (e.g., Harting Han series) or specify controlled mating sequences with soft-start pre-insertion contacts to extend service life.
How does the -50°C to 100°C operating range affect the Weidmüller 1638680000's contact resistance and signal integrity in temperature-cycled applications?
The Weidmüller 1638680000 operates across a 150°C span, introducing thermal stress on the screw-clamping mechanism and contact finish. At -50°C, PBT housing brittleness increases, and the M2 screw exhibits higher preload force due to reduced material compliance; over-torquing risk rises. Contact resistance increases ~0.5-1% per 10°C temperature drop due to reduced electron mobility in the tin plating. At 100°C, PBT creep accelerates; the clamping yoke gradually relaxes, reducing contact pressure by 5-10% over 1,000 hours. For signal applications (low current, high impedance), this creep manifests as increasing insertion loss or capacitive coupling degradation. Thermal cycling (-50°C to +100°C) induces differential expansion between copper wire (α ≈ 17 ppm/K) and PBT housing (α ≈ 60-80 ppm/K), creating mechanical stress on the contact interface. Design-in temperature margins: operate at <80°C continuous for full rated current; for -50°C applications, verify screw torque annually.
Can the Weidmüller 1638680000 be used in medical or safety-critical applications, and what certifications are missing?
The Weidmüller 1638680000 holds UL and IEC certifications but lacks medical-specific approvals (IEC 60601-1 for biomedical devices, IEC 61010-1 for laboratory instruments). For safety-critical applications, the 1638680000 is not suitable in primary safety-chain positions (emergency stop circuits, life-support interlocks). Its RoHS compliance and unlimited MSL (Moisture Sensitivity Level 1) indicate suitability for standard industrial environments but not controlled medical cleanrooms. If medical application is required, verify with the OEM whether medical-grade variants exist or specify alternative connectors with 60601 certification (e.g., Amphenol FCI or TE Connectivity dedicated medical lines). Safety-critical applications require traceability, failure mode analysis (FMEA), and periodic re-qualification; the 1638680000 lacks published failure rate data (MTBF) or documented derating curves required for functional safety calculations.

Parts with Similar Specifications

The three parts on the right have similar specifications to Weidmüller 1638680000

Product Attribute 1638660000 1638640000 1638650000 1638630000
Part Number 1638660000 1638640000 1638650000 1638630000
Manufacturer Weidmüller Weidmüller Weidmüller Weidmüller
Color - - - -
Wire Gauge or Range - mm² - - - -
Contact Mating Finish - - - -
Contact Material - - - -
Contact Tail Length - - - -
Screw Size - - - -
Header Orientation - - - -
Termination Style - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Plug Wire Entry - - - -
Current - UL - - - -
Current - IEC - - - -
Number of Levels - - - -
Torque - Screw - - - -
Pitch - - - -
Type - - - -
Number of Positions - - - -
Voltage - IEC - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Ingress Protection - - - -
Housing Material - - - -
Positions Per Level - - - -
Insulation Height - - - -
Features - - - Simultaneous Sampling
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Series - - - -
Wire Strip Length - - - -
Material Flammability Rating - - - -
Voltage - UL - - - -
Wire Gauge or Range - AWG - - - -

1638680000 Datasheet PDF

Download 1638680000 pdf datasheets and Weidmüller documentation for 1638680000 - Weidmüller.

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1638680000 Image

1638680000

Weidmüller
98D-1638680000

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