AHS160-2 Equivalent & Substitute Parts

Part Overview

The AHS160-2 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., designed for surface mount applications requiring overcurrent protection. This component operates at 16V with a 1.6A hold current and provides automatic reset functionality after fault conditions are cleared. The part is actively produced and widely used in electronic circuit protection applications. Substitute parts may be required due to inventory availability, supply chain considerations, or specific application requirements where alternative manufacturers' components meet identical electrical and mechanical specifications.

Substiute Parts

AHS160-2

Littelfuse Inc.In Stock: 2320AHS160-2 Datasheet

Current PartRFQ

MF-SMHT160-2

Bourns Inc.In Stock: 3725MF-SMHT160-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AHS160-2 is permissible with components that maintain identical electrical performance characteristics and mechanical compatibility. The critical parameters determining substitutability are:

• Voltage rating of 16V maximum
• Hold current (Ih) of 1.6A maximum
• Trip current (It) of 3.2A
• Initial resistance (Ri) minimum of 50 mOhms
• Post-trip resistance (R1) maximum of 150 mOhms
• Operating temperature range of -40°C to 125°C
• Surface mount 2-SMD package configuration
• Polymeric PTC resettable fuse type
• ROHS3 compliance

The MF-SMHT160-2 from Bourns Inc. satisfies all these criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the AHS160-2 and MF-SMHT160-2 are active production components with AEC-Q200 automotive-grade ratings and ROHS3 compliance. Selection between these parts should be based on:

Availability and lead time requirements, as both manufacturers maintain active inventory stocks. The MF-SMHT160-2 offers a higher maximum current rating (100A versus 70A) and faster trip time (10s versus 15s), which may provide enhanced protection margins in specific applications. Both components meet identical hold current, trip current, and resistance specifications required for direct circuit substitution. Dimensional variations are minor and within typical PCB layout tolerances for 2-SMD surface mount packages.

Frequently Asked Questions (FAQ)

Q: Can the MF-SMHT160-2 be used as a direct replacement for the AHS160-2 in existing designs?

A: Yes. Both components share identical voltage ratings, hold current, trip current, initial resistance, post-trip resistance, operating temperature range, package type, and compliance certifications. The components are electrically and mechanically compatible for direct substitution.

Q: What are the dimensional differences between these parts?

A: The AHS160-2 measures 0.343" L x 0.250" W (8.70mm x 6.36mm), while the MF-SMHT160-2 measures 0.374" L x 0.234" W (9.50mm x 5.94mm). Both share identical thickness of 0.118" (3.00mm). These minor variations are within standard PCB layout tolerances for 2-SMD packages.

Q: Are there differences in trip response time?

A: The AHS160-2 has a time to trip of 15 seconds, while the MF-SMHT160-2 trips in 10 seconds. Both operate within acceptable overcurrent protection parameters. The faster response of the Bourns component may provide additional protection margin in applications sensitive to fault duration.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both the AHS160-2 and MF-SMHT160-2 carry AEC-Q200 ratings, indicating compliance with automotive-grade reliability and quality standards.

Q: What is the moisture sensitivity level for each part?

A: The AHS160-2 has MSL 2A (4 weeks), while the MF-SMHT160-2 has MSL 1 (Unlimited). The Bourns component offers superior moisture resistance characteristics.