MK23-35-B-2 Equivalent & Substitute Parts

Part Overview

The MK23-35-B-2 is a glass body reed switch manufactured by Standex-Meder Electronics, configured as a SPST-NO (Single Pole Single Throw - Normally Open) surface mount component. This switch operates within a 10 to 15 AT (Ampere-Turn) range and is rated for 1A switching current at 200V AC/DC with 15W power handling capability. The component is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when application requirements permit operation at reduced current or power ratings while maintaining identical voltage specifications, circuit configuration, operating temperature range, and surface mount termination style.

Substiute Parts

MK23-35-B-2

Standex-Meder ElectronicsIn Stock: 981MK23-35-B-2 Datasheet

Current PartRFQ

MK23-87-B-2

Standex-Meder ElectronicsIn Stock: 9149MK23-87-B-2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The MK23-87-B-2 qualifies as a substitute for the MK23-35-B-2 based on the following substitution criteria:

Identical Parameters (Required for Substitution):

• Manufacturer: Standex-Meder Electronics
• Series: MK23
• Circuit Configuration: SPST-NO
• Type: Glass Body Reed
• Mounting Type: Surface Mount
• Termination Style: Gull Wing
• Voltage - Switching AC: 200V
• Voltage - Switching DC: 200V
• Operating Temperature Range: -40°C to 130°C
• Operate Range: 10 to 15AT
• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)
• Packaging: Tape & Reel (TR)

Reduced Ratings (Acceptable for Lower-Current Applications):

• Current - Switching: 400mA (vs. 1A in main part)
• Power - Rated: 10W (vs. 15W in main part)
• Current - Carry: 500mA (vs. 1.25A in main part)

The MK23-87-B-2 is suitable for applications requiring switching currents of 400mA or less at 200V, with total power dissipation not exceeding 10W.

Parameter Comparison

Engineering Selection Recommendations

MK23-35-B-2 Selection Criteria:

• Applications requiring 1A switching current capacity at 200V
• Circuits with power dissipation up to 15W
• Designs requiring 1.25A continuous current carrying capability
• Standard operating time specification of 0.5 ms acceptable

MK23-87-B-2 Selection Criteria:

• Applications limited to 400mA maximum switching current at 200V
• Circuits with power dissipation up to 10W
• Designs requiring 500mA continuous current carrying capability
• Faster release time (0.05 ms) beneficial for rapid de-energization
• Lower capacitance (0.2 pF) suitable for high-frequency signal applications

Both parts maintain identical compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN classification) and unlimited moisture sensitivity rating, ensuring equivalent reliability and regulatory acceptance in production environments.

Frequently Asked Questions (FAQ)

Q: Can MK23-87-B-2 replace MK23-35-B-2 in all applications?

A: No. The MK23-87-B-2 is suitable only for applications where the switching current requirement is 400mA or less and total power dissipation does not exceed 10W. Applications requiring the full 1A switching capacity must use the MK23-35-B-2.

Q: What is the primary difference between these two parts?

A: The primary difference is current and power rating. The MK23-35-B-2 switches up to 1A at 15W, while the MK23-87-B-2 switches up to 400mA at 10W. All other electrical and mechanical specifications remain identical.

Q: Are the physical dimensions compatible?

A: The parts have similar but not identical dimensions. The MK23-35-B-2 has a body size of 0.087" Dia × 0.413" L (2.20mm × 10.50mm), while the MK23-87-B-2 is 0.079" Dia × 0.394" L (2.00mm × 10.00mm). Both use identical Gull Wing termination and surface mount configuration, but PCB layout should be verified for dimensional compatibility.

Q: Do both parts have the same operating temperature range?

A: Yes. Both the MK23-35-B-2 and MK23-87-B-2 operate across -40°C to 130°C, ensuring equivalent thermal performance in the specified environment.

Q: What is the difference in switching speed?

A: The MK23-35-B-2 has an operate time of 0.5 ms and release time of 0.1 ms. The MK23-87-B-2 has an operate time of 0.6 ms and release time of 0.05 ms. The substitute part releases faster but operates slightly slower.

Q: Are both parts available in the same packaging?

A: Yes. Both parts are supplied in Tape & Reel (TR) packaging, ensuring identical handling and automated assembly compatibility.

Q: Do compliance certifications differ between the parts?

A: No. Both parts carry identical ROHS3 compliance, REACH Unaffected status, MSL 1 (Unlimited) rating, and EAR99 ECCN classification.