Equivalent & Substitute Parts for 0521002.MAT1L

Part Overview

The Littelfuse 0521002.MAT1L is a 2A, 75VDC board mount axial fuse from the PICO® II 521 series. This through-hole component is designed for fast-blow protection in electronic circuits requiring compact form factors and reliable current interruption. The part maintains active product status with full RoHS3 compliance and CSA/cURus approvals. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design specifications permit higher voltage ratings.

Substiute Parts

0521002.MAT1L

Littelfuse Inc.In Stock: 11640521002.MAT1L Datasheet

Current PartRFQ

7010.7090.13

SCHURTER Inc.In Stock: 9317010.7090.13 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0521002.MAT1L is permissible with the SCHURTER 7010.7090.13 based on the following matching parameters:

Matching Criteria:

• Current Rating: Both parts rated at 2 A
• Mounting Type: Both through-hole mounted
• Fuse Type: Both board mount (cartridge style excluded)
• Response Time: Both fast-blow
• Breaking Capacity: Both rated at 300A
• RoHS Compliance: Both ROHS3 compliant
• Approval Agencies: Both CSA certified

Voltage Consideration: The substitute part (7010.7090.13) carries a higher DC voltage rating of 125V compared to the main part's 75V DC rating. This higher rating does not prevent substitution in applications operating at or below 75V DC, as the substitute part maintains all other electrical and mechanical compatibility parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (0521002.MAT1L): Select the Littelfuse 0521002.MAT1L when applications require operation across the full -55°C to 125°C temperature range and when the specific axial diameter of 0.135" is required for board layout constraints. This part carries cURus approval in addition to CSA certification.

Substitute Part Selection (7010.7090.13): The SCHURTER 7010.7090.13 serves as a functional substitute for applications operating at or below 75V DC and within the -55°C to 85°C temperature range. The substitute part's higher voltage rating (125V DC/AC) provides design margin in lower-voltage applications. The reduced diameter (0.093" vs 0.135") may offer advantages in space-constrained board layouts. Both parts maintain identical current ratings, breaking capacity, and fast-blow response characteristics. Both parts carry CSA certification and ROHS3 compliance.

Temperature Consideration: Applications requiring sustained operation above 85°C must use the primary part (0521002.MAT1L) due to the substitute's maximum operating temperature of 85°C.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 7010.7090.13 replace the Littelfuse 0521002.MAT1L in all applications?

A: The SCHURTER substitute is compatible with applications operating at or below 75V DC and within the -55°C to 85°C temperature range. Applications requiring operation above 85°C must use the primary Littelfuse part.

Q: What is the significance of the different physical diameters (0.135" vs 0.093")?

A: The diameter difference reflects different cartridge construction standards between manufacturers. Both parts maintain the same 0.315" length and identical electrical characteristics. Board layout and mounting hole specifications determine which diameter is acceptable for a given application.

Q: Are both parts suitable for AC applications?

A: The primary part (0521002.MAT1L) specifies only DC voltage rating. The substitute (7010.7090.13) carries both AC and DC ratings (125V each). For AC applications, the substitute part is the appropriate selection.

Q: Do both parts carry the same regulatory approvals?

A: Both parts carry CSA certification. The primary part includes cURus approval, while the substitute carries UR approval. Both certifications meet North American safety standards for board-mounted fuses.

Q: What does "fast-blow" response time mean?

A: Fast-blow fuses interrupt circuit current rapidly upon overcurrent conditions, typically within milliseconds. Both the primary and substitute parts employ fast-blow characteristics, providing identical protection response in circuit applications.

Q: Are there inventory considerations when selecting between these parts?

A: The primary part (0521002.MAT1L) has 1128 pieces in stock, while the substitute (7010.7090.13) has 901 pieces available. Inventory levels may influence sourcing decisions based on project timelines.