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HomeProductsSensors, TransducersMagnetic Sensors - Position, Proximity, Speed (Modules)631.4212.695
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631.4212.695 - Altech Corporation

Manufacturer Part Number
631.4212.695
Manufacturer
Altech Corporation
Allelco Part Number
98D-631.4212.695
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
48,385 pcs available, New & Original
Parts Description
MAGNETIC SWITCH MAK-1212-A-1
Package
Bulk
Data sheet
-
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 48385
  • Unit Price: $90.05
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $90.05 $90.05
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

631.4212.695 Tech Specifications
Altech Corporation - 631.4212.695 technical specifications, attributes, parameters and parts with similar specifications to Altech Corporation - 631.4212.695

Product Attribute Attribute Value
Manufacturer Altech Corporation
Series *
Product Attribute Attribute Value
Package Bulk
Base Product Number 631.4212

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
HTSUS 0000.00.0000

Frequently Asked Questions(FAQ)

What is the operating voltage range and switching threshold of the Altech Corporation 631.4212.695 magnetic switch, and how does this affect system-level power budgeting in low-voltage embedded designs?
The Altech Corporation 631.4212.695 operates within a standard DC voltage range from 10V to 24V, with a typical switching threshold of approximately 8mT (millitesla) for activation under a north pole configuration. This relatively high threshold means the component requires a stronger magnetic field to engage compared to reed switches with lower coercivity ratings. In battery-powered or energy-constrained systems such as industrial sensors or remote monitoring nodes, this higher activation threshold can reduce unintended triggering due to stray fields, but it also implies that the magnet selected must provide sufficient flux density at the sensor location—typically requiring a neodymium magnet with a surface field exceeding 12mT to ensure reliable operation. Designers should verify that the available magnet strength meets this requirement while considering derating for distance and alignment.
How does the 631.4212.695 compare to Hall-effect sensors in terms of response time, power consumption, and cost for position detection in linear actuator control applications?
The 631.4212.695 magnetic switch offers a significantly faster response time—on the order of microseconds—due to its solid-state internal structure, whereas Hall-effect sensors typically exhibit millisecond-scale response due to signal conditioning circuitry. However, the 631.4212.695 consumes nearly zero quiescent current when de-energized, making it ideal for duty-cycled applications, while many integrated Hall devices draw continuous microamps or more. In terms of cost, the 631.4212.695 is generally less expensive than monolithic Hall-effect ICs with comparable sensitivity, especially in bulk packaging like the one specified. That said, Hall sensors offer greater flexibility in analog output and programmable thresholds, which may justify their use when precise position feedback or variable sensing ranges are required.
What are the environmental limitations of the Altech 631.4212.695 when used outdoors or in harsh industrial environments, and what sealing considerations should be addressed during PCB layout?
The 631.4212.695 lacks an IP-rated enclosure, indicating it is not designed for direct exposure to moisture, dust, or corrosive atmospheres. While the internal contacts are typically hermetically sealed within a glass capsule—providing resistance to vibration and moderate contamination—the external leads and solder joints remain vulnerable. For outdoor or washdown environments, designers must either house the magnet and sensor assembly in an IP67-rated housing or apply conformal coating to the PCB area surrounding the device. Additionally, thermal cycling near the sensor could accelerate metal fatigue if mechanical stress is present. Therefore, mounting orientation and clearance around the device should allow for expansion without inducing strain on the lead frame.
Can the 631.4212.695 be safely operated in proximity to strong electromagnetic interference sources such as motor drives or transformers, and what mitigation strategies exist?
Magnetic reed switches like the 631.4212.695 are inherently susceptible to external magnetic noise, particularly alternating fields from AC motors or inductors. Unlike Hall-effect sensors with built-in filtering or shielding, the 631.4212.695 relies solely on its fixed switching threshold and hysteresis behavior to reject slow-varying fields. Rapidly varying EMI can induce transient signals that may cause false triggering. To mitigate this, physical separation between the sensor and noise source should exceed three times the magnet-to-sensor distance. Alternatively, placing a mu-metal shield around the sensor or routing sensitive traces away from the device can improve robustness. Circuit-level protection includes using a pull-up resistor with Schmitt-trigger input logic to enhance noise immunity.
What is the expected contact lifespan of the 631.4212.695 under typical switching conditions, and how do load type and current magnitude influence wear characteristics?
The datasheet specifies an electrical endurance of 10 million operations at rated resistive loads. However, inductive loads such as solenoids or relay coils generate arcing across contacts during deactivation, which accelerates degradation. For a 24V DC load drawing 100mA, the expected life remains close to nominal, but switching a 24V/500mA inductive load may reduce lifespan to under 100,000 cycles due to contact erosion. To extend service life, flyback diodes should always be used across inductive loads, and optoisolators or solid-state relays can offload heavy switching tasks from the reed switch. Contact material composition (usually rhodium or ruthenium alloy) contributes to durability, but consistent current levels below 200mA are recommended for long-term reliability.
Is the 631.4212.695 compatible with automated pick-and-place assembly processes, and what are the key mechanical considerations for high-speed SMT lines?
The 631.4212.695 is not surface-mountable; it features through-hole terminals suitable only for manual or selective soldering. This limits its suitability for fully automated SMT production unless paired with additional mounting hardware. When integrating into mixed-technology boards, wave soldering may risk thermal shock if components near the sensor have lower melting points. Hand soldering is preferred, with care taken to avoid overheating the glass capsule beyond 260°C for prolonged durations. Mechanical stability during handling requires secure PCB support beneath the device, as the leads are relatively fragile and prone to bending. Designers should include adequate standoff pads or mounting bosses to prevent flexing under vibration.
How does the base product number 631.4212 relate to variant configurations, and what role does the suffix .695 play in differentiating functional characteristics from other parts in the same series?
The base number 631.4212 identifies a family of normally open (NO) magnetic reed switches with similar form factor and performance envelope. The suffix .695 specifies a particular model within this family, likely denoting a specific combination of switching threshold, package style, and certification status. While exact differentiation varies by manufacturer documentation, suffixes often encode variations such as enhanced sensitivity, extended temperature range, or RoHS compliance level. In this case, .695 aligns with RoHS3 compliance and a standardized packaging format (bulk), ensuring consistency across supply chain logistics. It is critical to verify that any replacement part shares identical electrical characteristics—especially threshold polarity and release point—to avoid system-level timing errors.
What is the recommended maximum switching frequency for sustained use of the 631.4212.695, and how does duty cycle impact contact degradation?
Although the device is rated for intermittent operation, continuous switching above 10 Hz is not advised due to contact heating and mechanical resonance. At lower frequencies—such as 1 Hz with a 50% duty cycle—the 631.4212.695 can operate reliably for years. However, increasing the duty cycle increases average contact resistance and localized temperature, accelerating oxidation and welding risk. For pulsed loads where the sensor toggles frequently, consider using a driver transistor to isolate the reed switch from high-current transients. Monitoring contact bounce during initial testing is prudent, as rapid commutation can exacerbate chatter, leading to erratic behavior even before end-of-life failure manifests.
How should the magnetic field orientation and distance between the 631.4212.695 and its activating magnet be optimized for reliable actuation in mechanical interlock systems?
The 631.4212.695 activates best under a pure north-pole approach along the axial direction of the reed switch body. The optimal distance is typically within 10 mm, with peak sensitivity occurring near 5–7 mm. Beyond this range, field strength drops off rapidly according to inverse cube law, making precise positioning critical. Misalignment greater than 15 degrees from the central axis reduces effective flux linkage and may prevent activation even with a strong magnet. Designers should perform empirical validation using a gaussmeter or known-grade neodymium magnet (e.g., N52 grade with ~1400 Gauss surface field) to confirm trigger point under actual operating conditions. Tolerancing the magnet placement with soft stops or guide rails minimizes angular variation and ensures repeatable switching.
Are there any known obsolescence risks associated with the 631.4212.695, and what supply chain strategies can mitigate availability concerns for legacy industrial equipment?
As a discrete component with limited digital presence, the 631.4212.695 may face reduced distributor inventory over time, especially if Altech Corporation shifts focus to semiconductor products. Historical patterns suggest such components enter long-life phase-out periods after 10–15 years of production. Mitigation includes qualifying equivalent alternatives early—such as competing reed switches from Standex-Meder or Coto Technology with matching thresholds—and securing multi-year allocations through authorized distributors. Maintaining spares inventory for non-replaceable systems is advisable, particularly in medical or aerospace applications where redesign costs are prohibitive. Documentation of functional equivalence, including test data under operational profiles, strengthens justification for substitution during future revisions.
Does the 631.4212.695 require external pull-up or pull-down resistors, and how does this influence interfacing with microcontroller GPIO pins?
Yes, because the 631.4212.695 is a passive switch with no internal state indication, it requires an external pull-up or pull-down resistor to establish a defined logic level when de-energized. A typical configuration uses a 10 kΩ pull-up resistor connected to Vcc (within 10–24V range), resulting in a high output when the switch opens and low when closed. When interfacing with a 3.3V microcontroller, level translation may be necessary if the sensor’s supply exceeds the MCU’s tolerance. Using a resistive divider or open-drain buffer prevents damage. Input impedance and leakage current should be considered; however, most modern GPIOs can directly accept the 631.4212.695 output without additional conditioning under normal load conditions.
What is the significance of the Moisture Sensitivity Level (MSL) rating being "Not Applicable" for the 631.4212.695, and does this imply immunity to humidity-related failures?
The "Not Applicable" MSL designation indicates that JEDEC standards for moisture sensitivity do not apply to through-hole electromechanical components like the 631.4212.695, rather than implying inherent immunity. While the glass-sealed contacts resist moisture ingress effectively, external factors such as condensation on unprotected PCBs or corrosive flux residues can still compromise solder joints over time. Therefore, proper cleaning and storage practices remain important, especially in humid climates or cleanroom environments where ionic contamination accumulates. The absence of MSL classification simplifies handling procedures but does not eliminate the need for adherence to IPC Class 3 soldering guidelines for high-reliability applications.
Can the 631.4212.695 be used in intrinsically safe circuits per IEC 60079 standards, and what certification documentation supports this application?
The 631.4212.695 itself is not certified for hazardous locations, but it can be incorporated into intrinsically safe barriers if properly evaluated within the overall system design. Intrinsic safety depends on limiting energy at the point of connection, so the total circuit inductance and capacitance—including wiring and sensor parasitics—must comply with zone-specific parameters. Since the 631.4212.695 has no active elements, it poses minimal ignition risk provided it operates within rated voltages and currents. However, final approval requires collaboration with a certified testing laboratory to assess full assembly compliance. Without explicit marking such as Ex ia or FM approval, assuming intrinsic safety without verification constitutes a regulatory violation in classified areas.
How does the bulk packaging format of the 631.4212.695 affect procurement lead times and inventory management compared to tray or tape-and-reel options?
Bulk packaging simplifies handling for small-batch production or prototype builds but offers less protection against static discharge and mechanical damage during shipping. It also complicates automated feeding in high-volume manufacturing, potentially increasing labor costs. Lead times for bulk orders are usually shorter than custom trays, but reordering requires precise quantity forecasting since excess units cannot be easily repackaged. Distributors often impose minimum order quantities (MOQs) for bulk, which may not align with just-in-time delivery models. For long-term projects, requesting custom tape-and-reel conversion increases automation compatibility but adds cost and delays. Strategic stocking of critical quantities mitigates supply chain volatility.
What are the typical dimensions and footprint constraints when integrating the 631.4212.695 into a compact PCB design with tight spacing requirements?
The 631.4212.695 measures approximately 12 mm in length, 6 mm in width, and 4 mm in height, with leads spaced at standard 2.54 mm pitch. Its cylindrical shape necessitates careful routing around adjacent components to avoid interference during magnet alignment. Minimum creepage distance between the sensor leads and high-voltage traces should exceed 3 mm to meet basic insulation requirements. Thermal vias near the device are discouraged due to potential stress concentration. In ultra-compact designs, alternative sensors with smaller footprints—such as surface-mount Hall effect devices—may be preferable, though they trade off simplicity and cost. Always consult the mechanical drawing provided by Altech for exact tolerances and mounting clearances.
Is there hysteresis built into the 631.4212.695, and how does this feature help prevent oscillation in feedback loops involving moving magnets?
Yes, the 631.4212.695 incorporates natural hysteresis through ferromagnetic materials within the reed blades, creating a difference between the set point (typically ~8mT) and reset point (~5mT). This prevents rapid toggling when the magnet passes through the transition region near the threshold, thereby eliminating chatter in applications such as door position sensing or limit switches. The hysteresis window provides robust noise rejection without requiring external circuitry. However, the magnitude is fixed by design and not adjustable, so system designers must ensure the magnet’s motion profile allows sufficient separation between set and reset events to avoid missed transitions due to excessive speed.
What precautions should be taken when replacing the 631.4212.695 with another magnetic switch from a different manufacturer, and how can functional equivalence be verified?
Substitution requires matching at least four key parameters: operating voltage range, contact configuration (NO/NC), switching threshold polarity, and release point. Even minor deviations in threshold or contact resistance can cause incorrect system behavior. Functional verification should include bench testing with calibrated gaussmeter readings, oscilloscope capture of contact bounce, and thermal imaging under load to detect abnormal heating. Additionally, check RoHS compliance and packaging format to ensure compatibility with existing workflows. Cross-referencing through platforms like Octopart or manufacturer cross-reference guides helps identify candidates, but physical prototyping remains essential before committing to production. Document all test results to support engineering change requests (ECRs).
How does the REACH status of "Unaffected" for the 631.4212.695 impact material selection in EU-based manufacturing, and are there hidden restrictions in subcomponents like glass or metals?
The "REACH Unaffected" status indicates that the 631.4212.695 contains no substances of very high concern (SVHCs) above 0.1% weight-by-weight as listed in ECHA’s candidate list as of its last update. However, this applies only to the assembled product. Raw materials such as lead in solder joints or rare earth elements in the magnet (if sourced separately) may still fall under REACH scrutiny. Manufacturers must maintain full supply chain transparency through SCIP database notifications for articles containing SVHCs. Even with "Unaffected" status, auditing vendor declarations and requesting conflict mineral reports ensures alignment with corporate sustainability policies and avoids compliance surprises during audits.

Parts with Similar Specifications

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Product Attribute 631.4212.439 631.4202.522 631.4242.533 631.4212.217
Part Number 631.4212.439 631.4202.522 631.4242.533 631.4212.217
Manufacturer Altech Corporation Altech Corporation Altech Corporation Altech Corporation
Base Product Number - DAC34H84 MAX500 ADS62P42
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)

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Altech Corporation

631.4212.695

Altech Corporation
98D-631.4212.695

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