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HomeProductsSwitchesPushbutton SwitchesALD3QH202DNUG
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ALD3QH202DNUG - IDEC

Manufacturer Part Number
ALD3QH202DNUG
Manufacturer
IDEC
Allelco Part Number
98D-ALD3QH202DNUG
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
31,838 pcs available, New & Original
Parts Description
40MM MUSH MOM 120V 2NC GRN
Package
Bulk
Data sheet
-
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 31838
  • Unit Price: $67.84
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $67.84 $67.84
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ALD3QH202DNUG Tech Specifications
IDEC - ALD3QH202DNUG technical specifications, attributes, parameters and parts with similar specifications to IDEC - ALD3QH202DNUG

Product Attribute Attribute Value
Manufacturer IDEC
Series *
Product Attribute Attribute Value
Package Bulk
Base Product Number ALD3QH202

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
ECCN EAR99
HTSUS 8536.50.9035

Frequently Asked Questions(FAQ)

What is the electrical rating and contact configuration of the ALD3QH202DNUG pushbutton switch?
The ALD3QH202DNUG is rated for 120V operation and features a 2NC (two normally closed) contact configuration. This means the switch maintains two independent closed circuits in its rest state, and both circuits open when the button is pressed. The 120V rating indicates the switch is designed for AC line-voltage applications common in industrial control panels and machinery interfaces. The dual normally closed contacts in the ALD3QH202DNUG allow for simultaneous switching of multiple circuits or implementation of safety interlocks where circuit interruption occurs at activation.
How does the 40mm mushroom head design of the ALD3QH202DNUG affect operator safety and ergonomic performance?
The 40mm mushroom head on the ALD3QH202DNUG provides a large, easily graspable surface that accommodates gloved operation and reduces the precision required for activation. The mushroom geometry naturally guides finger contact toward the center of the actuator, distributing force evenly and reducing accidental partial presses. In industrial environments, the oversized head of the ALD3QH202DNUG enhances tactile feedback and makes the switch easier to locate and operate during high-stress or emergency situations. The mushroom profile also allows for rapid depression and release, which is critical in applications requiring quick operator response or emergency stop functionality.
What are the key differences between the ALD3QH202DNUG and its substitute model ALD39902DN-G-120V?
Both the ALD3QH202DNUG and the ALD39902DN-G-120V are 120V rated pushbutton switches with similar industrial specifications, but the ALD3QH202DNUG uses the ALD3QH202 base platform while the substitute represents an alternative series designation. The substitutability of the ALD39902DN-G-120V for the ALD3QH202DNUG indicates matching electrical ratings, contact configuration, and mounting envelope, making them interchangeable in most applications. However, sourcing patterns, lead times, and manufacturing facility locations may differ between the two models. When evaluating the ALD3QH202DNUG against its substitute, verify mechanical mounting specifications and any application-specific certifications to ensure compatibility within your control system architecture.
Why is the ALD3QH202DNUG classified as MSL 1 (Unlimited) moisture sensitivity, and what does this mean for storage and handling?
The ALD3QH202DNUG carries an MSL 1 classification, indicating no moisture sensitivity precautions are required during storage, handling, or installation. This is typical for mechanical pushbutton switches with robust construction, as the ALD3QH202DNUG contains no moisture-susceptible semiconductor or adhesive components. Unlike surface-mount integrated circuits that require controlled humidity environments, the ALD3QH202DNUG can be stored in standard warehouse conditions without desiccant packaging or humidity-controlled cabinets. This MSL 1 rating simplifies supply chain management and reduces the risk of performance degradation due to environmental exposure before installation.
How does the normally closed (NC) contact design of the ALD3QH202DNUG support fail-safe circuit configurations?
The 2NC contact configuration of the ALD3QH202DNUG naturally supports fail-safe logic where loss of control signal or mechanical failure results in circuit interruption rather than unwanted activation. In safety-critical applications, the ALD3QH202DNUG can be wired such that a broken or missing signal prevents hazardous operation. For example, if the ALD3QH202DNUG is used to control a motor contactor, a broken lead wire causes the motor to de-energize rather than run uncontrolled. The dual NC contacts in the ALD3QH202DNUG enable redundant safety paths, allowing designers to implement Category 3 safety functions (per ISO 13849) without additional external logic.
What panel mounting considerations apply when installing the ALD3QH202DNUG in a control enclosure?
The ALD3QH202DNUG utilizes a standard front-panel pushbutton mounting format compatible with 22mm or similar industrial control holes, typical of IEC-compliant enclosures. The 40mm mushroom head geometry of the ALD3QH202DNUG requires adequate clearance above the panel surface to allow full button travel and prevent adjacent components from interfering with actuator motion. Installation spacing around the ALD3QH202DNUG should account for operator hand clearance and shock-related movement of the button; industry practice recommends minimum 25mm spacing between adjacent switches. The bulk packaging option for the ALD3QH202DNUG suggests high-volume integration into larger control system designs, where panel layout templates and mounting fixtures standardize installation.
Is the ALD3QH202DNUG suitable for outdoor or washdown environments, and what environmental protection measures are needed?
The ALD3QH202DNUG is a mechanical pushbutton switch with no inherent IP (Ingress Protection) rating explicitly stated in its specifications. For outdoor or washdown applications, the ALD3QH202DNUG must be enclosed within a rated control enclosure or equipped with an optional protective shroud to prevent water infiltration. If the ALD3QH202DNUG is deployed in damp or spray environments without proper shielding, moisture ingress can cause contact corrosion or erratic operation over extended periods. To use the ALD3QH202DNUG reliably in harsh environments, integrate it into an IP65 or higher rated panel, or select a variant with integrated splash protection and stainless steel construction if frequent washdown exposure is anticipated.
How does the ROHS3 compliance of the ALD3QH202DNUG affect its use in regulated markets and supply chain integration?
The ROHS3 compliance status of the ALD3QH202DNUG confirms that the component meets current EU Restriction of Hazardous Substances directives, with elimination of lead solder, cadmium, and other restricted materials from manufacturing and assembly processes. For designers targeting EU or environmentally regulated markets, the ALD3QH202DNUG can be incorporated into end-product declarations of conformity without material substitution or compliance tracking complexities. The ROHS3 standard applied to the ALD3QH202DNUG also indicates adherence to modern manufacturing standards, which typically correlate with consistent quality and traceability. When substituting components in legacy designs, confirming that the ALD3QH202DNUG meets the same or higher ROHS classification as the original part ensures regulatory continuity and avoids future supply discontinuation issues.
What typical current ratings and contact life specifications should be expected from the ALD3QH202DNUG in low-voltage control circuits?
While the ALD3QH202DNUG is rated for 120V operation, its contact current capacity depends on the electrical load being switched. For resistive loads in low-voltage control circuits (e.g., 24VDC logic inputs or relay coil switching), the ALD3QH202DNUG typically handles currents in the 2–5A range before reaching thermal or contact erosion limits. Inductive loads (motor starters, solenoids) require derated current ratings for the ALD3QH202DNUG due to arc suppression demands during contact break. The mechanical life of the ALD3QH202DNUG is generally rated in millions of cycles under no-load conditions, but contact life under AC load can be significantly shorter, typically 100,000–500,000 cycles depending on amperage and load type. Engineers using the ALD3QH202DNUG in high-frequency switching applications should consult detailed life data or conduct bench testing to verify suitability.
How should the ALD3QH202DNUG be integrated into PLC or industrial controller input modules?
The ALD3QH202DNUG, with its 120V 2NC contact configuration, can be wired directly to 120V AC industrial I/O modules or through a 24VDC logic interface using a small control relay. When the ALD3QH202DNUG is connected to a PLC discrete input card, the normally closed contact design allows the input to read a continuous 'logic high' or on-state when the button is unpressed, transitioning to a 'logic low' or off-state when activated. This inverted logic must be accounted for in control firmware or addressed through input polarity inversion settings in the PLC software. Proper debounce timing (typically 10–50ms) should be configured in the PLC for the ALD3QH202DNUG to filter out mechanical chatter during contact transition, ensuring stable state detection in real-time control loops.
What is the green color indicator on the ALD3QH202DNUG used for, and does it affect electrical function?
The green color designation ('GRN') in the ALD3QH202DNUG model number identifies the pushbutton cap or actuator color, which serves as a visual indicator for operator recognition and panel organization in multi-button control arrays. The green color of the ALD3QH202DNUG typically corresponds to functional or start operations by industry convention, distinguishing it from red (stop/emergency) or other colors. The color is purely cosmetic and does not affect the electrical performance, contact rating, or switching characteristics of the ALD3QH202DNUG; however, color standardization improves operator safety by enabling rapid visual identification of button function under stress or low-light conditions. When designing control panels with the ALD3QH202DNUG alongside other colored switches, adhere to IEC 60073 color and symbol standards to ensure compliance with operator interface regulations.
What EAR99 classification means for the ALD3QH202DNUG and how it affects export and distribution?
The EAR99 classification for the ALD3QH202DNUG indicates it is subject to U.S. export control regulations but does not require an export license for most commercial destinations under the Export Administration Regulations (EAR). This classification simplifies global distribution of the ALD3QH202DNUG compared to controlled items, allowing standard commercial shipments to most countries without government approval delays. However, certain sanctioned nations or end-use scenarios (weapons development, military applications) may still restrict export of the ALD3QH202DNUG. Distributors and integrators handling the ALD3QH202DNUG should maintain basic export documentation and verify customer end-use compliance with U.S. export policy, particularly when supplying to higher-risk regions or specialized defense applications.
How does the bulk packaging option for the ALD3QH202DNUG affect cost, lead time, and supply chain planning?
The bulk packaging specification for the ALD3QH202DNUG indicates the switch is supplied in loose or unpackaged form (e.g., in bags or reels without individual boxes), reducing per-unit material cost and logistics overhead compared to individually packaged variants. Bulk ordering of the ALD3QH202DNUG is typically advantageous for high-volume OEM integration or panel assembly operations where switches are installed into sub-assemblies in controlled environments. Lead times for the ALD3QH202DNUG in bulk configuration may be shorter than specialty packaging variants, as fewer secondary processing steps are required. However, bulk packaging requires the integrator to implement receiving inspection, inventory tracking, and proper storage procedures for the ALD3QH202DNUG to prevent component loss or damage during handling before installation.

Parts with Similar Specifications

The three parts on the right have similar specifications to IDEC ALD3QH202DNUG

Product Attribute ALD3QH202DNUA ALD3QH202DNUY ALD3QH202DNUR ALD3QH202DNUS
Part Number ALD3QH202DNUA ALD3QH202DNUY ALD3QH202DNUR ALD3QH202DNUS
Manufacturer IDEC IDEC IDEC IDEC
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

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IDEC

ALD3QH202DNUG

IDEC
98D-ALD3QH202DNUG

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