MF-RHT650-AP Equivalent & Substitute Parts

Part Overview

The MF-RHT650-AP is a polymeric PTC resettable fuse manufactured by Bourns Inc. under the Multifuse® series. This through-hole radial disc component provides overcurrent protection at 16V with a 6.5A hold current rating. The part is active in production status with AEC-Q200 automotive qualification and full RoHS3 compliance. Substitute parts are identified when equivalent voltage ratings, similar current protection ranges, and compatible through-hole radial packaging are required for circuit protection applications where the original part is unavailable or inventory constraints necessitate alternative sourcing.

Substiute Parts

MF-RHT650-AP

Bourns Inc.In Stock: 1096MF-RHT650-AP Datasheet

Current PartRFQ

RGEF900-1

LittelfuseIn Stock: 841RGEF900-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MF-RHT650-AP is determined by the following critical parameters:

Voltage Rating: The substitute must maintain the same maximum voltage specification of 16V to ensure circuit protection integrity.

Current Protection Range: The substitute must provide hold current (Ih) and trip current (It) ratings within acceptable operational margins for the protected circuit. The MF-RHT650-AP specifies 6.5A hold and 12A trip; substitutes with higher current ratings remain compatible when the circuit design permits.

Mounting Configuration: The substitute must use through-hole radial disc packaging to ensure mechanical and electrical compatibility with existing PCB layouts.

Type Classification: The substitute must be a polymeric PTC resettable fuse to maintain functional equivalence and reset capability.

The identified substitute RGEF900-1 (Littelfuse PolySwitch® series) meets all four criteria: 16V maximum voltage, through-hole radial disc package, polymeric PTC type, and current ratings (9A hold, 15.3A trip) suitable for applications requiring higher current protection margins.

Parameter Comparison

Engineering Selection Recommendations

Both the MF-RHT650-AP and RGEF900-1 are active production components with full RoHS3 compliance and equivalent 16V voltage ratings. Selection between these parts depends on application-specific requirements:

The MF-RHT650-AP is specified for automotive applications with AEC-Q200 qualification and supports an extended operating temperature range of -40°C to 125°C. This part is appropriate for circuits requiring automotive-grade reliability and higher temperature operation.

The RGEF900-1 provides higher current hold and trip ratings (9A and 15.3A respectively versus 6.5A and 12A) with CSA, TUV, and UL certifications. This part is suitable for applications requiring additional current protection margin and industrial-grade agency approvals. The operating temperature range is -40°C to 85°C, which is adequate for most industrial and consumer applications but does not extend to the higher temperatures supported by the MF-RHT650-AP.

Both parts share identical time-to-trip specifications (5.5 seconds) and maximum current ratings (100A), ensuring consistent protection response characteristics.

Frequently Asked Questions (FAQ)

Q: Can RGEF900-1 directly replace MF-RHT650-AP in automotive applications?

A: The RGEF900-1 is not qualified to AEC-Q200 automotive standards. If the application requires automotive-grade qualification, the MF-RHT650-AP must be used. For non-automotive industrial applications, the RGEF900-1 is mechanically and electrically compatible.

Q: What is the difference in current ratings between these parts?

A: The MF-RHT650-AP holds at 6.5A and trips at 12A. The RGEF900-1 holds at 9A and trips at 15.3A. The RGEF900-1 provides higher current protection thresholds, making it suitable for circuits with higher nominal current draw.

Q: Are both parts compatible with the same PCB footprint?

A: Both parts use through-hole radial disc packaging. However, lead spacing differs: MF-RHT650-AP has 0.114" (2.90mm) spacing while RGEF900-1 has 0.199" (5.05mm) spacing. PCB layout must accommodate the specific lead spacing of the selected part.

Q: What is the operating temperature difference?

A: The MF-RHT650-AP operates from -40°C to 125°C, while the RGEF900-1 operates from -40°C to 85°C. For applications requiring operation above 85°C, the MF-RHT650-AP is required.

Q: Are both parts RoHS compliant?

A: Yes, both the MF-RHT650-AP and RGEF900-1 are ROHS3 compliant and suitable for applications with RoHS requirements.