DRR-DTH-45-50 Equivalent & Substitute Parts

Part Overview

The DRR-DTH-45-50 is a glass body reed switch manufactured by Littelfuse Inc., configured as a single-pole double-throw (SPDT) device rated for 350mA AC switching at 350V. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The substitute part DRS-DTH-45-50 maintains identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

DRR-DTH-45-50

Littelfuse Inc.In Stock: 911DRR-DTH-45-50 Datasheet

Current PartRFQ

DRS-DTH-45-50

Littelfuse Inc.In Stock: 843DRS-DTH-45-50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The DRS-DTH-45-50 qualifies as a direct substitute for the DRR-DTH-45-50 based on the following criteria:

Electrical Parameters Match:

• Circuit configuration: SPDT
• Operate range: 45 ~ 50AT
• Current switching capacity: 350mA (AC), 500mA (DC)
• Voltage ratings: 350V (AC), 500V (DC)
• Rated power: 30W
• Operating time: 4.5 ms
• Release time: 7 ms

Mechanical Parameters Match:

• Type: Glass body reed switch
• Mounting: Through hole
• Termination: Axial
• Overall length: 3.375" (85.73mm)
• Body size: 0.210" Dia x 1.500" L (5.33mm x 38.10mm)

Compliance Parameters Match:

• RoHS3 compliant
• ECCN: EAR99
• HTSUS: 8536.50.9065

The substitution is valid across all specified electrical, mechanical, and compliance parameters.

Parameter Comparison

Engineering Selection Recommendations

The DRS-DTH-45-50 is the appropriate selection for new designs and procurement activities. The DRR-DTH-45-50 is obsolete and should be replaced in active applications. Both parts maintain identical electrical performance across all switching parameters, operating temperature range, and power ratings. The DRS-DTH-45-50 carries active product status from Littelfuse Inc., ensuring long-term availability and supply chain continuity. Both components satisfy ROHS3 compliance requirements and carry identical trade classification codes, confirming regulatory equivalence.

Frequently Asked Questions (FAQ)

Q: Can DRS-DTH-45-50 be used as a direct replacement for DRR-DTH-45-50?

A: Yes. The DRS-DTH-45-50 is electrically and mechanically identical to the DRR-DTH-45-50 across all specified parameters, including switching current, voltage ratings, operating temperature range, and physical dimensions. The primary difference is product status: DRS-DTH-45-50 is active while DRR-DTH-45-50 is obsolete.

Q: Are there packaging differences between these parts?

A: The DRR-DTH-45-50 is specified with packaging listed as "-" (not specified), while the DRS-DTH-45-50 is supplied in bulk packaging. Both parts use identical through-hole axial termination and physical form factor.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching: circuit configuration (SPDT), operate range (45 ~ 50AT), switching current ratings (350mA AC / 500mA DC), voltage ratings (350V AC / 500V DC), and power rating (30W). Both parts satisfy all these criteria.

Q: Are compliance certifications equivalent?

A: Yes. Both parts are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8536.50.9065) classifications, confirming regulatory and trade equivalence.