Littelfuse 169.5801 Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 169.5801 is an 80A, 32VDC automotive blade fuse with slow-blow response characteristics, designed for automotive electrical protection applications requiring a holder-mounted configuration. This part operates in the OFK3 series and is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs.

Substiute Parts

169.5801

Littelfuse Inc.In Stock: 1057169.5801 Datasheet

Current PartRFQ

0299080.TXN

Littelfuse Inc.In Stock: 10130299080.TXN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 169.5801 is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 80 A (exact match required)
• Voltage Rating (DC): 32 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: Blade, Max (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Breaking Capacity: 1 kA @ Rated Voltage (exact match required)
• Fuse Type: Automotive (exact match required)

The substitute part 0299080.TXN meets all electrical and mechanical equivalence criteria and is classified as an active product with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The 0299080.TXN (MAXI® series) is the direct functional equivalent for the obsolete 169.5801. Both parts share identical electrical ratings (80A, 32VDC, slow-blow response) and mechanical form factors (Blade, Max package).

The 0299080.TXN offers the following advantages for new designs and replacement applications:

• Active product status with current manufacturing availability
• ROHS3 compliance, meeting modern regulatory requirements
• Approved to DIN, ISO, and SAE standards
• Operating temperature range of -40°C to 125°C
• Lower DC cold resistance (0.00054 Ohms vs. 0.0009 Ohms), providing improved electrical efficiency

Physical dimensions are equivalent within manufacturing tolerances (169.5801: 29.70mm L × 9.10mm W × 21.30mm H; 0299080.TXN: 29.21mm L × 8.85mm W × 21.59mm H).

Frequently Asked Questions (FAQ)

Q: Can the 0299080.TXN directly replace the 169.5801 in existing applications?

A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters: 80A current rating, 32VDC voltage rating, slow-blow response, Blade Max package, and 1kA breaking capacity. Both require the same holder-mounted configuration.

Q: What is the difference in DC cold resistance between these parts?

A: The 0299080.TXN has a lower DC cold resistance (0.00054 Ohms) compared to the 169.5801 (0.0009 Ohms). This difference reflects manufacturing improvements and does not affect functional compatibility in automotive protection circuits.

Q: Are there dimensional differences between these fuses?

A: Dimensional variations exist within normal manufacturing tolerances. The 0299080.TXN measures 29.21mm L × 8.85mm W × 21.59mm H, while the 169.5801 measures 29.70mm L × 9.10mm W × 21.30mm H. Both fit standard Blade Max holders.

Q: What regulatory compliance should be considered for new designs?

A: The 0299080.TXN is ROHS3 compliant and approved to DIN, ISO, and SAE standards, making it suitable for modern automotive applications. The obsolete 169.5801 is RoHS non-compliant and should not be specified for new designs.

Q: Is the 0299080.TXN available in production quantities?

A: Yes. The 0299080.TXN is classified as an active product with current manufacturing support from Littelfuse Inc.