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MH12-1A8K Mercury Wetted Reed Relay

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MH12-1A8K Mercury Wetted Reed Relay

MH12-1A8K Mercury Wetted Reed Relay

$60.00

MH12-1A8K Mercury Wetted Reed Relay for engineering selection. Coil 12 VDC. 1 Form A contact. 5KV ACpeak/DC switching. 100 W rating.

Sample, Datasheet & Engineering Support

  • Model: MH12-1A8K
  • Purchase path: Buy sample online
  • Production projects: RFQ recommended for final electrical confirmation.

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Primary path is RFQ. Use Buy Sample only for engineering validation quantities.

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SKU: MH12-1A8K Categories: , ,
Model detail

MH12-1A8K product details, applications and specifications

Use this family where bounce performance and contact stability are more important than a general-purpose relay solution. Confirm orientation, regulatory and application limits before production use. The table below summarizes the key selection points; use the model datasheet for dimensions, ratings and ordering confirmation.

MH12-1A8K Mercury Wetted Reed Relay
Mercury Wetted Relay principle illustration
1Control coil
2Mercury wetted contact
3Stable low-resistance path
4Measurement / pulse output

Main specifications for RFQ

Public model
MH12-1A8K
Product family
8KV Reed Relay, Mercury Wetted Relays, MH Mercury Wetted Relays
Max operating voltage
16 VDC
Max pull-in voltage
9 VDC
Min drop-out voltage
1.2 VDC
Coil resistance
200 ohm
Max carrying current
10.0 A
Min breakdown voltage
(relay)8K VDC
Max contact resistance
100 mohm
Dielectric strength coil/contact
8K VDC
Insulation resistance
1012ohm
Reset time
5.0ms
Capacitance
across contacts1.0pF
Datasheet
Available as individual PDF for this model

Specifications above are extracted from the live product content for this model. Confirm final ratings, drawings and ordering code through the PDF datasheet or RFQ before production use.

Datasheet-style view

MH12-1A8K technical data by section

Grouped specification blocks make this model page easier to scan for engineering selection, RFQ review and sample validation.

Contact / output data

Capacitance
across contacts1.0pF

Mechanical & mounting

Series
HGFR / HGMR / HGSR / HVR and related families
Switching behavior
Low bounce and stable contact resistance
Signal type
Precision signal, pulse and test switching

Ordering / RFQ notes

  • Confirm exact ordering code, coil voltage, contact form and termination style before purchase.
  • Share load voltage/current, load type, duty cycle, ambient temperature and isolation requirement in RFQ.
  • Use the linked PDF datasheet for package drawing, dimensions and final rating limits.
  • For mercury wetted relays, confirm required mounting orientation, mercury-related compliance and disposal rules for the target market.
  • Product family context: Mercury Wetted Relay.
Engineering selection notes

Avoid common specification mistakes

These notes keep product pages useful for engineers while avoiding overclaims. Final ratings remain model- and application-specific.

Orientation and compliance must be checkedMercury wetted relays are specialized precision parts. Many types require a defined mounting orientation and may be restricted by RoHS, WEEE, transport, disposal or customer environmental rules.
Bounce wording is contact-technology specificMercury wetted contacts are selected where extremely low or bounce-free switching is required. Do not apply this claim to dry reed relays unless an individual datasheet supports it.
Best fit: precision signal switchingUse mercury wetted types for low-level measurement, pulse/timing and data-acquisition circuits where contact stability is critical, not as a universal relay upgrade.

Typical applications

  • Precision test systems
  • Pulse and timing circuits
  • Instrumentation switching
  • Industrial measurement equipment

What to confirm before purchase

  • Voltage, current, load type and safety margin
  • Contact form, coil voltage and drive circuit
  • Mounting, wiring, environmental and compliance requirements
  • Sample validation quantity and production forecast
FAQ

MH12-1A8K ordering FAQ

These visible answers mirror the FAQ structured data and clarify what buyers should confirm before sample approval or production ordering.

What should be confirmed before ordering MH12-1A8K?

Confirm the exact ordering code, coil or control voltage, contact form or output type, voltage/current rating, mounting style, environmental conditions and validation quantity.

Is a PDF datasheet available for MH12-1A8K?

Yes. The model page links to an individual PDF datasheet for engineering review and RFQ confirmation.

What applications is this product family used for?

Precision test systems, Pulse and timing circuits, Instrumentation switching, Industrial measurement equipment.

Recommended next steps

MH12-1A8K selection actions

Use these internal paths to move from overview to model comparison, datasheet review and RFQ submission.

Download model datasheetReview ratings, package drawing and ordering detailsRequest engineering quoteSend load, voltage, quantity and validation requirementsCompare all modelsBrowse the complete model index and related seriesView 8KV Reed Relay familyReturn to category guide, comparison and representative modelsFamily catalog PDFOpen the product-family catalog for broader selection

Download MH12-1A8K Datasheet Request quote for this model Compare all models

English engineering resources

Datasheet, catalog and RFQ support

Download the original source datasheet when available; otherwise use the checked generated English datasheet, family catalog, or RFQ path.

Download English Datasheet Family Catalog Complete Catalog Request Engineering Quote

Original source PDFs are preferred when available. Generated English PDFs are used only when no original source PDF is found; final ratings, drawings and application suitability are confirmed by RFQ.

Description

MH12-1A8K

12V Mercury Wetted Reed Relay 1 Form A

The MH12-1A8K is a mercury wetted reed relay from SHR’s MH series, driven by a 12VDC coil with 1 Form A (SPST-NO) contacts. Mercury wetted contacts deliver bounce-free switching with stable low contact resistance over life, making it suitable for high-reliability switching in industrial automation, test equipment and instrumentation.

Key Specifications

Nominal coil voltage 12 VDC
Max operating voltage 16 VDC
Max pull-in voltage 9 VDC
Min drop-out voltage 1.2 VDC
Coil resistance 200 ohm
Max contact rating 100 W
Max switching voltage 5KV ACpeak/DC
Max switching current 5.0 A
Max carrying current 10.0 A
Min breakdown voltage (contacts) 8K VDC
Max contact resistance 100 mohm
Min breakdown voltage (relay) 8K VDC
Dielectric strength coil/contact 8K VDC
Insulation resistance 1012ohm
Operate time (incl. bounce) 7.0ms
Reset time 5.0ms
Capacitance across contacts 1.0pF
Operating temperature -20 to +70°C
Storage temperature -35 to +105°C
Soldering temperature 5 sec.max 260°C

Key Highlights

  • Mercury wetted contacts for bounce-free switching
  • Low contact resistance
  • High carry current
  • Excellent lifetime characteristics
  • Custom design available
  • Installation: Hg wet contacts must be mounted within 30° of vertical plane.

Applications

  • Industrial automation
  • Test and measurement equipment
  • High-reliability switching systems
  • Instrumentation

Specifications per the MH12-1A8K datasheet.

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