MDSR-4-7-13 Equivalent & Substitute Parts

Part Overview

The MDSR-4-7-13 is a glass body reed switch manufactured by Littelfuse Inc., configured as a SPST-NO (Single Pole Single Throw - Normally Open) device. This through-hole component is designed for applications requiring low-power switching with a rated power of 10W and DC switching current of 500mA. The part is currently in active production status with 980 units available in inventory. Alternative equivalent parts may be required due to inventory constraints, application-specific voltage requirements, or design optimization needs.

Substiute Parts

MDSR-4-7-13

Littelfuse Inc.In Stock: 1086MDSR-4-7-13 Datasheet

Current PartRFQ

MDCG-4-7-13

Littelfuse Inc.In Stock: 2028MDCG-4-7-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDSR-4-7-13 is determined by the following critical parameters:

Core Compatibility Criteria:

• Circuit configuration must remain SPST-NO
• Operate range must match or encompass 7 ~ 13AT
• Mounting type must be Through Hole with Axial termination
• Physical dimensions (length and body size) must be identical
• Operating temperature range must cover -40°C ~ 125°C
• RoHS3 compliance must be maintained

Electrical Performance Criteria:

• DC switching current must be equal to or greater than 500mA
• DC switching voltage must be equal to or greater than 200V
• Rated power must be equal to or greater than 10W
• Operate and release times must be compatible (0.6ms and 0.2ms respectively)

The MDCG-4-7-13 meets all substitution criteria as a direct equivalent part within the Littelfuse reed switch product family.

Parameter Comparison

Engineering Selection Recommendations

Both the MDSR-4-7-13 and MDCG-4-7-13 are active production parts manufactured by Littelfuse Inc. and maintain full ROHS3 compliance. The parts are functionally equivalent across all electrical and mechanical parameters. Selection between these parts should be based on inventory availability and packaging requirements. The MDSR-4-7-13 is available in 980 units, while the MDCG-4-7-13 is available in 1949 units with bulk packaging. Both parts carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8536.50.9065) and moisture sensitivity ratings (MSL 1 - Unlimited).

Frequently Asked Questions (FAQ)

Q: Can the MDCG-4-7-13 be used as a direct replacement for the MDSR-4-7-13?

A: Yes. The MDCG-4-7-13 is a direct equivalent substitute. All electrical parameters (switching current, voltage, power rating, operate/release times) and mechanical specifications (dimensions, mounting type, termination style) are identical. Both parts maintain the same operating temperature range and compliance certifications.

Q: Are there any differences in AC switching capability between these parts?

A: The MDCG-4-7-13 includes AC switching specifications (350mA AC at 140V), while the MDSR-4-7-13 is specified for DC operation only (500mA DC at 200V). For DC-only applications, both parts are equivalent. For applications requiring AC switching capability, the MDCG-4-7-13 provides additional functionality.

Q: Do these parts have identical physical dimensions?

A: Yes. Both the MDSR-4-7-13 and MDCG-4-7-13 have identical overall length (1.590" / 40.39mm) and body size (0.090" Dia x 0.600" L / 2.28mm x 15.24mm). They are pin-compatible and can be used interchangeably in through-hole PCB designs.

Q: What is the difference in packaging between these parts?

A: The MDSR-4-7-13 is available with standard packaging, while the MDCG-4-7-13 is supplied in bulk packaging. This distinction affects ordering and handling but does not impact component performance or compatibility.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the MDSR-4-7-13 and MDCG-4-7-13 are ROHS3 compliant and carry identical regulatory classifications. The MDCG-4-7-13 additionally carries REACH Unaffected status. Both parts are suitable for applications subject to environmental compliance requirements.