MLRR-3-10-15 Reed Switch Equivalent & Substitute Parts

Part Overview

The MLRR-3-10-15 is a glass body reed switch manufactured by Littelfuse Inc., classified as SPST-NO (Single Pole Single Throw - Normally Open) with a switching capacity of 700mA AC and 1A DC at 140V AC. This through-hole component is designed for applications requiring reliable magnetic actuation in the 10 to 15 Ampere-Turn (AT) operate range. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the MLRR-3 series while accommodating different magnetic sensitivity requirements.

Substiute Parts

MLRR-3-10-15

Littelfuse Inc.In Stock: 765MLRR-3-10-15 Datasheet

Current PartRFQ

MLRR-3-17-23

Littelfuse Inc.In Stock: 1091MLRR-3-17-23 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the MLRR-3 reed switch series is determined by electrical and mechanical parameter equivalence. The primary differentiator between the MLRR-3-10-15 and its substitute MLRR-3-17-23 is the operate range specification, which defines the magnetic field strength (in Ampere-Turns) required to actuate the switch.

Key Parameters Governing Substitution:

• Circuit configuration (SPST-NO) — must remain identical
• Current switching capacity (700mA AC / 1A DC) — must remain identical
• Voltage ratings (140V AC / 200V DC) — must remain identical
• Power rating (20W) — must remain identical
• Mounting type (Through Hole) and termination style (Axial) — must remain identical
• Operating temperature range (-40°C ~ 125°C) — must remain identical
• Physical dimensions and body size — must remain identical
• RoHS and compliance status — must remain equivalent or superior

The MLRR-3-17-23 substitute part maintains all electrical and mechanical specifications while providing a higher operate range (17 ~ 23 AT). This substitution is valid only when the application's magnetic field strength can accommodate the higher actuation threshold.

Parameter Comparison

Engineering Selection Recommendations

Both the MLRR-3-10-15 and MLRR-3-17-23 are active production components from Littelfuse Inc. with identical ROHS3 compliance and regulatory certifications (EAR99, HTSUS 8536.50.9065). Selection between these parts is determined solely by the magnetic field strength available in the application circuit.

The MLRR-3-10-15 operates at a lower magnetic threshold (10 ~ 15 AT) and is suitable for applications with limited magnetic field generation capability. The MLRR-3-17-23 requires a higher magnetic field (17 ~ 23 AT) and is appropriate for applications where stronger magnetic actuation is available or desired for increased noise immunity.

Both parts maintain identical electrical performance (700mA AC / 1A DC switching, 140V AC / 200V DC voltage rating, 20W power rating) and physical form factor (through-hole, axial termination, 56.64mm length). Direct substitution is valid only when the application's magnetic field strength aligns with the operate range specification of the selected part.

Frequently Asked Questions (FAQ)

Q: Can MLRR-3-17-23 be used as a direct replacement for MLRR-3-10-15?

A: Direct substitution is valid only if the application provides sufficient magnetic field strength to meet the 17 ~ 23 AT operate range requirement. If the magnetic field is insufficient, the MLRR-3-17-23 will not actuate reliably.

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

A: The operate range differs. MLRR-3-10-15 requires 10 ~ 15 Ampere-Turns of magnetic field to actuate, while MLRR-3-17-23 requires 17 ~ 23 Ampere-Turns. All other electrical and mechanical specifications are identical.

Q: Are the physical dimensions identical?

A: Yes. Both parts have identical overall length (2.230" / 56.64mm), body diameter (0.105" / 2.66mm), and body length (0.600" / 15.24mm). They are mechanically interchangeable in terms of PCB footprint and mounting.

Q: Do both parts have the same compliance certifications?

A: Yes. Both MLRR-3-10-15 and MLRR-3-17-23 are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity), EAR99 export classification, and HTSUS code 8536.50.9065.

Q: What switching current and voltage ratings apply to both parts?

A: Both parts switch 700mA AC or 1A DC at 140V AC or 200V DC with a 20W power rating. Switching times are identical at 0.7ms operate and 0.2ms release.

Q: Can I use MLRR-3-10-15 in place of MLRR-3-17-23?

A: Substitution in this direction is valid only if the application's magnetic field strength does not exceed 15 AT. If the magnetic field exceeds this threshold, the MLRR-3-10-15 may actuate unintentionally or exhibit chatter.