SMD200-2 Equivalent & Substitute Parts

Part Overview

The SMD200-2 is a Polymeric PTC Resettable Fuse manufactured by Littelfuse Inc., rated for 15V maximum voltage and 2A hold current in a 2-SMD surface mount package. This component is classified as Obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal characteristics while accommodating available packaging and compliance standards.

Substiute Parts

SMD200-2

Littelfuse Inc.In Stock: 1592SMD200-2 Datasheet

Current PartRFQ

SMD200F-2

Littelfuse Inc.In Stock: 5485SMD200F-2 Datasheet

DirectRFQ

2920L030DR

Littelfuse Inc.In Stock: 194012920L030DR Datasheet

MFR RecommendedRFQ

MF-SM200-2

Bourns Inc.In Stock: 15290MF-SM200-2 Datasheet

DirectRFQ

0ZCF0200FF2C

Bel Fuse Inc.In Stock: 354220ZCF0200FF2C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage rating must equal or exceed 15V maximum
• Hold current (Ih) must equal 2A
• Trip current (It) must equal 4A
• Operating temperature range must encompass -40°C to 85°C
• Mounting type must be Surface Mount
• Initial resistance (Ri) and post-trip resistance (R1) must fall within acceptable tolerance bands

Package Considerations:

• Direct package equivalents use 2-SMD configuration
• Alternative packages (2920 metric) are acceptable if electrical parameters align and board layout permits

Compliance Baseline:

• Active product status preferred for long-term availability
• RoHS3 compliance required for new designs
• Approval agencies (CSA, TUV, UL, cURus, AEC-Q200) validate safety and performance standards

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

SMD200F-2 and MF-SM200-2 are the primary substitutes for SMD200-2. Both maintain identical electrical specifications (15V, 2A hold, 4A trip, 12s trip time) and 2-SMD package configuration. SMD200F-2 is manufactured by Littelfuse Inc., the original manufacturer, ensuring design continuity. MF-SM200-2 is manufactured by Bourns Inc. and includes AEC-Q200 automotive qualification. Both parts are Active status with RoHS3 compliance, supporting long-term procurement and regulatory requirements.

Alternative Substitutes (Conditional Use):

0ZCF0200FF2C (Bel Fuse Inc.) meets electrical requirements with 16V rating, 2A hold, and 4A trip current. The 2920 package differs from the original 2-SMD footprint, requiring PCB layout verification. Faster trip time (4.5s vs. 12s) and lower initial resistance (35 mOhms vs. 50 mOhms) may affect circuit behavior in specific applications. AEC-Q200 certification and RoHS3 compliance support automotive and regulated environments.

Not Recommended:

2920L030DR does not qualify as a substitute. The 300 mA hold current and 600 mA trip current fall significantly below the 2A/4A requirements of the original part, making it unsuitable for equivalent circuit protection.

Frequently Asked Questions (FAQ)

Q: Can SMD200F-2 be used as a direct replacement for SMD200-2?

A: Yes. SMD200F-2 is electrically and mechanically equivalent to SMD200-2. Both are rated 15V, 2A hold current, 4A trip current, with 12-second trip time and 2-SMD package. SMD200F-2 is Active status with RoHS3 compliance, addressing the Obsolete status of the original part.

Q: What is the difference between SMD200F-2 and MF-SM200-2?

A: Both parts meet the core electrical specifications (15V, 2A hold, 4A trip, 12s trip time) and use 2-SMD packaging. SMD200F-2 is manufactured by Littelfuse Inc., while MF-SM200-2 is manufactured by Bourns Inc. MF-SM200-2 includes AEC-Q200 automotive qualification and supports higher maximum current (100A vs. 40A). Selection depends on manufacturer preference and automotive certification requirements.

Q: Why is 0ZCF0200FF2C listed as a substitute if the package is different?

A: 0ZCF0200FF2C maintains the critical electrical parameters (16V, 2A hold, 4A trip) required for circuit protection. The 2920 package is physically smaller than 2-SMD but functionally equivalent. This part is suitable only if PCB layout can accommodate the 2920 footprint and the faster trip time (4.5s) does not conflict with circuit timing requirements.

Q: Why is 2920L030DR not a suitable substitute?

A: 2920L030DR is rated for 300 mA hold current and 600 mA trip current, which are insufficient for circuits designed around the 2A hold and 4A trip specifications of SMD200-2. Using an undersized fuse creates inadequate circuit protection and violates design safety margins.

Q: What compliance considerations apply to substitute selection?

A: SMD200-2 is RoHS non-compliant. All recommended substitutes (SMD200F-2, MF-SM200-2, 0ZCF0200FF2C) are RoHS3 compliant, meeting current regulatory requirements for new designs and procurement. Approval agencies (CSA, TUV, UL, cURus, AEC-Q200) validate safety performance across all substitute options.

Q: Are there packaging constraints when selecting a substitute?

A: SMD200F-2 and MF-SM200-2 use identical 2-SMD packaging, requiring no PCB modifications. 0ZCF0200FF2C uses 2920 (7351 Metric) packaging, which is physically smaller. Board layout must be verified to confirm footprint compatibility before design implementation.