Littelfuse 0498030.M-CN Automotive Fuse 30A 32VDC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0498030.M-CN is a 30A automotive fuse rated for 32VDC operation with slow-blow response characteristics and bolt-mount configuration. This part is discontinued at DiGi Electronics, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications. All substitute parts listed are manufactured by Littelfuse within the MIDI® 498 series and share the same core functional parameters required for direct replacement in automotive electrical circuits.

Key Parameters

Parameter	Value
Current Rating	30 A
Voltage Rating (DC)	32 V
Fuse Type	Automotive
Response Time	Slow Blow
Mounting Type	Bolt Mount
Package / Case	Auto Link
Breaking Capacity @ Rated Voltage	1 kA
Size / Dimension	1.614" L x 0.472" W x 0.315" H (41.00mm x 12.00mm x 8.00mm)
Operating Temperature Range	-40°C ~ 125°C
DC Cold Resistance	0.00206 Ohms

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Current Rating: 30 A (exact match required)
Voltage Rating (DC): 32 V (exact match required)
Fuse Type: Automotive (exact match required)
Response Time: Slow Blow (exact match required)
Mounting Type: Bolt Mount (exact match required)
Package / Case: Auto Link (exact match required)
Breaking Capacity @ Rated Voltage: 1 kA (exact match required)
Size / Dimension: 1.614" L x 0.472" W x 0.315" H (exact match required)
Operating Temperature Range: -40°C ~ 125°C (exact match required)

All five substitute parts (0498030.H, 0498030.M, 0498030.MX1M6, 0498030.MXT, 0498030.TXN) meet these criteria and are direct parametric equivalents. Differences exist only in packaging format (bulk vs. tape), approval agency certifications, and color designation, none of which affect electrical or mechanical compatibility.

Parameter Comparison

Part Number	Current Rating (A)	Voltage Rating (DC)	Response Time	Mounting Type	Package / Case	Breaking Capacity (kA)	Size (mm)	DC Cold Resistance (Ohms)	Operating Temp (°C)	Product Status	Inventory (Pcs)
0498030.M-CN	30	32	Slow Blow	Bolt Mount	Auto Link	1	41.00 x 12.00 x 8.00	0.00206	-40 ~ 125	Discontinued	15200
0498030.H	30	32	Slow Blow	Bolt Mount	Auto Link	1	41.00 x 12.00 x 8.00	0.00206	-40 ~ 125	Active	854
0498030.M	30	32	Slow Blow	Bolt Mount	Auto Link	1	41.00 x 12.00 x 8.00	0.0021	-40 ~ 125	Active	1525
0498030.MX1M6	30	32	Slow Blow	Bolt Mount	Auto Link	1	41.00 x 12.00 x 8.00	0.00206	-40 ~ 125	Active	807
0498030.MXT	30	32	Slow Blow	Bolt Mount	Auto Link	1	41.00 x 12.00 x 8.00	0.00206	-40 ~ 125	Active	1621
0498030.TXN	30	32	Slow Blow	Bolt Mount	Auto Link	1	41.00 x 12.00 x 8.00	0.00206	-40 ~ 125	Active	706

Engineering Selection Recommendations

All five substitute parts are active products with full availability. Selection should prioritize based on the following criteria:

0498030.M offers the highest inventory level (1525 pcs) among active alternatives and carries UL approval agency certification, providing regulatory compliance documentation for automotive applications.

0498030.MXT provides the second-highest inventory (1621 pcs) and maintains ROHS3 compliance with REACH unaffected status, suitable for applications requiring environmental compliance documentation.

0498030.MX1M6 and 0498030.TXN are functionally equivalent with lower inventory levels (807 and 706 pcs respectively) but maintain identical electrical parameters and full compliance certifications.

0498030.H is available with 854 pcs in stock and is ROHS3 compliant, offering a mid-range inventory option for immediate procurement needs.

DC cold resistance values for 0498030.M (0.0021 Ohms) and all other substitutes (0.00206 Ohms) fall within acceptable tolerance for automotive fuse applications and do not affect circuit protection performance.

Frequently Asked Questions (FAQ)

Q: Can 0498030.M-CN be directly replaced with any of these substitute parts?

A: Yes. All five substitute parts (0498030.H, 0498030.M, 0498030.MX1M6, 0498030.MXT, 0498030.TXN) are parametric equivalents with identical current rating, voltage rating, response time, mounting configuration, and physical dimensions. Direct replacement is electrically and mechanically compatible.

Q: What is the difference between the substitute part numbers?

A: The suffix designations (H, M, MX1M6, MXT, TXN) indicate variations in packaging format, approval agency certifications, and color coding. All variants maintain identical electrical specifications and breaking capacity. The differences do not affect functional performance in the circuit.

Q: Does DC cold resistance variation between 0498030.M (0.0021 Ohms) and other substitutes (0.00206 Ohms) affect compatibility?

A: No. The resistance variation of approximately 1.9% is within acceptable tolerance for automotive fuse applications and does not impact circuit protection characteristics or thermal performance.

Q: Which substitute part should be selected for new designs?

A: For new designs, select from active products with highest inventory availability: 0498030.MXT (1621 pcs) or 0498030.M (1525 pcs). Both carry full compliance certifications and ensure long-term supply continuity.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All five substitute parts carry ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for automotive component procurement.

Q: What is the significance of the Auto Link package designation?

A: Auto Link refers to the specific connector interface and mounting configuration for automotive bolt-mount fuse applications. All substitutes use identical Auto Link packaging, ensuring mechanical compatibility with existing fuse holders and mounting hardware.

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