Littelfuse 37301600430 Board Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 37301600430 is a 160 mA, 250 V AC/DC board mount fuse with fast blow response characteristics, designed for through-hole radial mounting in electronic assemblies. This TR5® 373 series fuse is actively produced and widely stocked. Equivalent and substitute parts are identified to support component procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical performance specifications.

Substiute Parts

37301600430

Littelfuse Inc.In Stock: 98837301600430 Datasheet

Current PartRFQ

37301600410

Littelfuse Inc.In Stock: 396237301600410 Datasheet

DirectRFQ

37001600410

Littelfuse Inc.In Stock: 140037001600410 Datasheet

Parametric EquivalentRFQ

37001600430

Littelfuse Inc.In Stock: 114637001600430 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 37301600430 are classified based on electrical and mechanical parameter alignment:

Direct Manufacturer Equivalent (37301600410): Identical electrical specifications (160 mA, 250 V AC, fast blow response), identical package dimensions, identical mounting type, and identical series designation (TR5® 373). This part is a direct functional replacement with no parameter deviations.

Parametric Equivalents (37001600410, 37001600430): These parts share all critical electrical parameters (160 mA, 250 V AC, fast blow response, 50 A breaking capacity) and mechanical specifications (package type, dimensions, through-hole mounting, operating temperature range). The primary distinction is series designation (TR5® 370 versus TR5® 373) and melting I²t value (0.014 versus 0.004). Both parametric equivalents maintain functional compatibility within the specified electrical and thermal operating envelope.

Key Parameters Determining Substitution:

• Current Rating: 160 mA (all parts identical)
• Voltage Rating: 250 V AC (all parts identical)
• Response Time: Fast Blow (all parts identical)
• Package / Case: Radial, Can, Vertical (all parts identical)
• Size / Dimension: 0.335" Dia x 0.315" H (all parts identical)
• Mounting Type: Through Hole (all parts identical)
• Operating Temperature: -40°C ~ 85°C (all parts identical)

Parameter Comparison

Engineering Selection Recommendations

37301600410 (Direct Equivalent): This part is the primary substitute for 37301600430. Both parts carry identical electrical ratings, thermal characteristics, and mechanical specifications within the TR5® 373 series. Selection between these two parts is determined by inventory availability and procurement lead time, as no functional differentiation exists.

37001600410 and 37001600430 (Parametric Equivalents): These TR5® 370 series parts are functionally compatible substitutes. The melting I²t value (0.014) differs from the main part (0.004), indicating a different thermal response profile. Both parts maintain the same current rating, voltage rating, response time classification, and physical dimensions. Selection of these parts is appropriate when TR5® 373 series availability is constrained and the application thermal environment permits the alternative I²t characteristic. Regulatory compliance differs: TR5® 370 series carries CCC, cURus, SEMKO, and VDE approvals, while TR5® 373 carries CSA and cULus approvals. Application-specific regulatory requirements must be evaluated prior to substitution.

All substitute parts are ROHS3 compliant, actively produced, and maintain the specified operating temperature range of -40°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can 37301600410 be used as a direct replacement for 37301600430?

A: Yes. Both parts are identical in electrical specifications (160 mA, 250 V AC, fast blow), mechanical dimensions (0.335" Dia x 0.315" H), mounting type (through-hole radial), and series designation (TR5® 373). No design modifications are required.

Q: What is the difference between the TR5® 373 and TR5® 370 series?

A: The primary difference is the melting I²t value. TR5® 373 series (37301600430, 37301600410) has a melting I²t of 0.004, while TR5® 370 series (37001600410, 37001600430) has a melting I²t of 0.014. This affects the thermal response characteristics of the fuse. Additionally, the series differ in regulatory approvals: TR5® 373 carries CSA and cULus certifications, while TR5® 370 carries CCC, cURus, SEMKO, and VDE certifications.

Q: Are the parametric equivalents (37001600410, 37001600430) suitable for all applications using 37301600430?

A: Parametric equivalents share all critical electrical parameters and physical dimensions. However, the different melting I²t value and regulatory certifications must be evaluated against application-specific requirements. If the application requires CSA or cULus certification specifically, the TR5® 373 series must be used. If alternative certifications (CCC, cURus, SEMKO, VDE) are acceptable and the thermal response profile is compatible, TR5® 370 series parts are suitable.

Q: Do all substitute parts have identical DC cold resistance?

A: The main part (37301600430) and direct equivalent (37301600410) both specify 4.131 Ohms DC cold resistance. The parametric equivalents (37001600410, 37001600430) do not provide DC cold resistance specifications in the available data.

Q: Are all parts RoHS compliant?

A: Yes. All parts listed (37301600430, 37301600410, 37001600410, 37001600430) are ROHS3 compliant.

Q: What is the physical footprint compatibility?

A: All parts share identical dimensions: 0.335" Dia x 0.315" H (8.50mm x 8.00mm). All parts use radial, can, vertical package configuration with through-hole mounting. PCB layout and mounting hole spacing are identical across all substitute parts.