MF-RHT300-0-14 Equivalent & Substitute Parts

Part Overview

The MF-RHT300-0-14 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 3A hold current (Ih) and 6A trip current (It), designed for through-hole radial mounting in disc configuration. The part is active in production status and carries AEC-Q200 automotive qualification along with cUL, cURus, and TUV approvals. Equivalent substitute parts are necessary when primary inventory is unavailable, when supply chain optimization is required, or when design flexibility across qualified manufacturers is needed while maintaining identical electrical and mechanical performance.

Substiute Parts

MF-RHT300-0-14

Bourns Inc.In Stock: 909MF-RHT300-0-14 Datasheet

Current PartRFQ

0ZRN0300FF1E

Bel Fuse Inc.In Stock: 18910ZRN0300FF1E Datasheet

Parametric EquivalentRFQ

RS16HT-300

OptiFuseIn Stock: 1915RS16HT-300 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MF-RHT300-0-14 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Maximum voltage rating: 16V
• Hold current (Ih): 3A
• Trip current (It): 6A
• Maximum current: 100A
• Time to trip: 5 seconds
• Initial resistance (Ri): 33 mOhms minimum
• Post-trip resistance (R1): 79 mOhms maximum
• Operating temperature range: -40°C to 125°C

Mechanical Parameters (Must Match Exactly):

• Mounting type: Through hole
• Package configuration: Radial, disc
• Lead spacing: 0.201 inches (5.10 mm)
• Seated height: 0.543 inches (13.80 mm) maximum

Compliance Parameters:

• Type: Polymeric PTC resettable fuse
• RoHS3 compliance required
• REACH unaffected status

All substitute parts listed below meet these criteria without exception.

Parameter Comparison

Engineering Selection Recommendations

MF-RHT300-0-14 (Bourns Inc., Multifuse® MF-RHT Series)

Primary selection when AEC-Q200 automotive qualification is required. Carries cUL, cURus, and TUV approvals. Moisture sensitivity level 1 (unlimited). Current inventory: 862 pieces.

0ZRN0300FF1E (Bel Fuse Inc., 0ZRN Series)

Direct parametric equivalent with identical electrical and mechanical specifications. Carries cURus, TUV, and UL approvals. Moisture sensitivity level not applicable. Current inventory: 1798 pieces. Selection appropriate when Bel Fuse qualification is acceptable and higher inventory availability is advantageous.

RS16HT-300 (OptiFuse, RS16HT Series)

Direct parametric equivalent with identical electrical and mechanical specifications. Carries cULus and TUV approvals. Moisture sensitivity level 1 (unlimited). Current inventory: 1873 pieces. Selection appropriate when OptiFuse qualification is acceptable and higher inventory availability is advantageous.

All three parts are active production components with ROHS3 compliance and identical performance characteristics across all critical electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can RS16HT-300 be used as a direct replacement for MF-RHT300-0-14 in automotive applications?

A: RS16HT-300 meets all electrical and mechanical parameter requirements for direct substitution. However, verify that OptiFuse qualification is acceptable for your specific automotive application requirements, as the MF-RHT300-0-14 carries explicit AEC-Q200 rating while RS16HT-300 does not list this rating.

Q: Are there any physical differences between these three parts?

A: No. All three parts share identical dimensions: 0.346" L x 0.118" W (8.80mm x 3.00mm), seated height of 0.543" (13.80mm) maximum, and lead spacing of 0.201" (5.10mm). They are mechanically interchangeable in through-hole radial disc configurations.

Q: What is the difference in moisture sensitivity between these parts?

A: MF-RHT300-0-14 and RS16HT-300 both specify moisture sensitivity level 1 (unlimited). 0ZRN0300FF1E lists moisture sensitivity as not applicable. This difference does not affect substitution compatibility.

Q: Do all three parts have identical electrical performance?

A: Yes. All three parts specify identical hold current (3A), trip current (6A), maximum voltage (16V), time to trip (5 seconds), initial resistance (33 mOhms minimum), and post-trip resistance (79 mOhms maximum). Operating temperature range is identical at -40°C to 125°C.

Q: Which part should be selected for highest inventory availability?

A: 0ZRN0300FF1E (Bel Fuse) has 1798 pieces in stock, followed by RS16HT-300 (OptiFuse) with 1873 pieces. MF-RHT300-0-14 (Bourns) has 862 pieces available.

Q: Are all three parts RoHS3 compliant?

A: Yes. All three parts carry ROHS3 compliance certification.

Q: What approval agencies certify each part?

A: MF-RHT300-0-14 carries cUL, cURus, and TUV approvals. 0ZRN0300FF1E carries cURus, TUV, and UL approvals. RS16HT-300 carries cULus and TUV approvals.