RGEF700-AP Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The RGEF700-AP is a Littelfuse PolySwitch® polymeric PTC resettable fuse rated for 16V maximum voltage and 7A hold current. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system support and new designs. The RGEF700-AP provides overcurrent protection through automatic thermal reset capability in through-hole radial disc configuration.

Substiute Parts

RGEF700-AP

LittelfuseIn Stock: 1192RGEF700-AP Datasheet

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RGEF700-2

Littelfuse Inc.In Stock: 5067RGEF700-2 Datasheet

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RGEF700K

Littelfuse Inc.In Stock: 1089RGEF700K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the RGEF700-AP is determined by strict equivalence across electrical and mechanical parameters. All substitute parts must maintain identical specifications for voltage rating, hold current, trip current, resistance characteristics, operating temperature range, and through-hole radial mounting configuration. The critical substitution parameters are:

• Voltage - Max: 16V
• Current - Hold (Ih) (Max): 7 A
• Current - Trip (It): 11.9 A
• Resistance - Initial (Ri) (Min): 7.7 mOhms
• Resistance - Post Trip (R1) (Max): 20 mOhms
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: Radial, Disc
• Lead Spacing: 0.199" (5.05mm)

Packaging format differences (Cut Tape, Bag) do not affect electrical or mechanical compatibility and represent valid substitutes for component-level selection.

Parameter Comparison

Engineering Selection Recommendations

Both RGEF700-2 and RGEF700K are electrically and mechanically equivalent to the obsolete RGEF700-AP. Selection between these active alternatives is based on packaging and availability requirements:

RGEF700-2 maintains identical seated height of 0.776" (19.70mm) and is supplied in Cut Tape packaging, suitable for automated assembly processes and high-volume production environments.

RGEF700K is supplied in Bag packaging with a seated height of 0.874" (22.20mm). This variant accommodates applications with less restrictive height constraints and is appropriate for manual assembly or lower-volume procurement scenarios.

Both substitute parts carry identical electrical ratings, thermal characteristics, and regulatory certifications (CSA, TUV, UL) with ROHS3 compliance. Active product status ensures long-term availability and supply chain continuity compared to the obsolete RGEF700-AP.

Frequently Asked Questions (FAQ)

Q: Can RGEF700-2 and RGEF700K be used interchangeably with RGEF700-AP?

A: Yes. Both parts are electrically and mechanically equivalent. All critical parameters including voltage rating, hold current, trip current, resistance characteristics, and operating temperature range are identical. Differences in packaging format and seated height do not affect functional compatibility at the component level.

Q: What is the difference between RGEF700-2 and RGEF700K?

A: The primary differences are packaging format and seated height. RGEF700-2 is supplied in Cut Tape and has a maximum seated height of 0.776" (19.70mm). RGEF700K is supplied in Bag format with a maximum seated height of 0.874" (22.20mm). Electrical specifications are identical.

Q: Does the seated height difference between RGEF700-2 and RGEF700K affect PCB layout?

A: The 0.098" (2.50mm) height difference may impact PCB clearance in space-constrained applications. RGEF700-2 is recommended for designs with height limitations. RGEF700K is suitable for applications with standard clearance requirements.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both RGEF700-2 and RGEF700K are ROHS3 compliant and carry identical regulatory approvals (CSA, TUV, UL) as the original RGEF700-AP.

Q: Why is RGEF700-AP listed as obsolete?

A: RGEF700-AP is obsolete, but active equivalent parts are available. RGEF700-2 and RGEF700K provide identical electrical and mechanical functionality with confirmed long-term availability.