MF-RHT700-0-14 Equivalent & Substitute Parts

Part Overview

The MF-RHT700-0-14 is a polymeric PTC resettable fuse manufactured by Bourns Inc. in the Multifuse® MF-RHT series. This component is rated for 16V maximum voltage with a 7A hold current and is designed for through-hole radial mounting in disc configuration. The part is currently active in production with 853 units in stock.

PTC resettable fuses are essential protective devices in electronic circuits where automatic overcurrent protection and self-recovery are required. Finding equivalent substitute parts is necessary to ensure supply chain flexibility, manage inventory across multiple suppliers, and maintain design continuity when primary components become unavailable.

Substiute Parts

MF-RHT700-0-14

Bourns Inc.In Stock: 959MF-RHT700-0-14 Datasheet

Current PartRFQ

0ZRN0700FF1A

Bel Fuse Inc.In Stock: 13700ZRN0700FF1A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MF-RHT700-0-14 is determined by strict electrical and mechanical parameter matching. The following criteria establish functional equivalence:

Electrical Parameters (Critical):

• Maximum voltage rating: 16V
• Hold current (Ih): 7A
• Trip current (It): 13A
• Maximum current: 100A
• Time to trip: 7 seconds
• Initial resistance (Ri): 10 mOhms minimum
• Post-trip resistance (R1): 25 mOhms maximum
• Operating temperature range: -40°C to 125°C

Mechanical Parameters (Critical):

• Mounting type: Through hole
• Package configuration: Radial, disc
• Physical dimensions: 0.551" L x 0.118" W (14.00mm x 3.00mm)
• Seated height: 0.862" (21.90mm) maximum
• Lead spacing: 0.201" (5.10mm)

Compliance Parameters:

• Component type: Polymeric PTC resettable fuse
• RoHS3 compliance required
• AEC-Q200 rating required

Parts meeting all these parameters are classified as direct parametric equivalents and may be substituted without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

The 0ZRN0700FF1A manufactured by Bel Fuse Inc. is a direct parametric equivalent to the MF-RHT700-0-14. Both components share identical electrical specifications, mechanical dimensions, and compliance certifications.

Selection Basis:

Both parts are active products with current production status, ensuring long-term availability. Both components carry AEC-Q200 automotive-grade ratings and ROHS3 compliance, meeting stringent environmental and quality standards. The electrical parameters—including voltage rating, hold current, trip current, resistance characteristics, and operating temperature range—are identical across both parts.

Mechanical compatibility is confirmed through matching package configuration (radial disc), physical dimensions (14.00mm x 3.00mm), seated height (21.90mm), and lead spacing (5.10mm). Both components are designed for through-hole mounting on printed circuit boards with identical footprints.

The 0ZRN0700FF1A carries UL, cURus, and TUV approvals, while the MF-RHT700-0-14 carries cUL, cURus, and TUV approvals. Both meet international safety and regulatory requirements for polymeric PTC resettable fuses in 16V, 7A applications.

Frequently Asked Questions (FAQ)

Q: Can the 0ZRN0700FF1A be used as a direct replacement for the MF-RHT700-0-14 without circuit modification?

A: Yes. Both components are parametric equivalents with identical electrical ratings (16V, 7A hold current, 13A trip current), matching resistance characteristics, and identical physical dimensions. No circuit redesign is required for substitution.

Q: Are the lead spacings identical between these two parts?

A: Yes. Both the MF-RHT700-0-14 and 0ZRN0700FF1A have a lead spacing of 0.201" (5.10mm), ensuring compatibility with the same PCB footprint.

Q: Do both parts meet automotive-grade standards?

A: Yes. Both components carry AEC-Q200 ratings, qualifying them for automotive applications requiring automotive-grade reliability and quality standards.

Q: What is the operating temperature range for both parts?

A: Both the MF-RHT700-0-14 and 0ZRN0700FF1A operate across the temperature range of -40°C to 125°C, providing consistent performance across industrial and automotive environments.

Q: Are both parts RoHS3 compliant?

A: Yes. Both components are ROHS3 compliant, meeting European Union restrictions on hazardous substances in electrical and electronic equipment.

Q: What is the maximum current these fuses can handle before tripping?

A: Both parts have a trip current (It) of 13A and a maximum current rating of 100A. The fuse will trip when current exceeds the trip threshold within the specified time window of 7 seconds.

Q: Do the physical dimensions match exactly?

A: Yes. Both parts share identical dimensions: 0.551" length x 0.118" width (14.00mm x 3.00mm), with a maximum seated height of 0.862" (21.90mm). They are mechanically interchangeable in radial disc configuration.

Q: What certifications do these parts carry?

A: The MF-RHT700-0-14 carries cUL, cURus, and TUV approvals. The 0ZRN0700FF1A carries UL, cURus, and TUV approvals. Both meet international safety standards for polymeric PTC resettable fuses.