RGEF700 Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The RGEF700 is an active polymeric PTC resettable fuse manufactured by Littelfuse, rated for 16V maximum voltage and 7A hold current. This component functions as an automatic reset protective device in through-hole radial configuration. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and regulatory compliance to support component sourcing flexibility and supply chain continuity.

Substiute Parts

RGEF700

LittelfuseIn Stock: 3104RGEF700 Datasheet

Current PartRFQ

16R700GMR

Littelfuse Inc.In Stock: 159916R700GMR Datasheet

SimilarRFQ

RGEF700-1

Littelfuse Inc.In Stock: 783RGEF700-1 Datasheet

Parametric EquivalentRFQ

MF-RG700-0

Bourns Inc.In Stock: 3692MF-RG700-0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RGEF700 are classified based on electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Equivalence Parameters:

• Voltage - Max: 16V
• Current - Hold (Ih) (Max): 7 A
• Current - Trip (It): 11.9 A
• Resistance - Initial (Ri) (Min): 7.7 mOhms minimum
• Resistance - Post Trip (R1) (Max): 20 mOhms maximum
• Operating Temperature: -40°C ~ 85°C

Mechanical Compatibility Parameters:

• Mounting Type: Through Hole
• Package / Case: Radial, Disc
• Lead Spacing: 5.05mm nominal (5.10mm acceptable within tolerance)

Parts meeting these criteria are direct electrical and mechanical substitutes. Minor variations in physical dimensions (length and width) do not affect circuit functionality provided lead spacing and height remain within acceptable ranges for PCB assembly.

Parameter Comparison

Engineering Selection Recommendations

RGEF700-1 is a parametric equivalent with identical electrical specifications and mechanical dimensions. Both parts carry PolySwitch® series designation from Littelfuse with CSA, TUV, and UL approvals. This part is suitable for direct substitution in all applications where RGEF700 is specified.

16R700GMR is a similar manufacturer part from Littelfuse with matching electrical parameters. Lead spacing tolerance (5.10mm vs. 5.05mm) and physical dimensions (11.20mm x 3.00mm vs. 10.70mm x 2.50mm) are within acceptable ranges for through-hole radial mounting. This part is supplied in Cut Tape packaging versus Bag packaging for the main part. Regulatory approvals include cURus and TUV certification.

MF-RG700-0 is a direct manufacturer part from Bourns Inc. with the Multifuse® series designation. Electrical parameters match the primary specifications with minor tolerance variations: initial resistance 8 mOhms (vs. 7.7 mOhms) and post-trip resistance 21 mOhms (vs. 20 mOhms). Time to trip specification is 8 seconds versus 4.6 seconds for the RGEF700. This part carries CSA, TUV, and UR approvals. Physical dimensions and lead spacing are compatible with through-hole radial PCB assembly.

All substitute parts are active products with ROHS3 compliance and REACH unaffected status, supporting regulatory continuity in production environments.

Frequently Asked Questions (FAQ)

Q: Can RGEF700-1 be used as a direct replacement for RGEF700?

A: Yes. RGEF700-1 is a parametric equivalent with identical voltage, current, resistance, and temperature specifications. Physical dimensions and lead spacing are identical. Both parts are manufactured by Littelfuse under the PolySwitch® series with matching regulatory approvals.

Q: What is the difference between 16R700GMR and RGEF700?

A: Both parts are manufactured by Littelfuse with identical electrical specifications (16V, 7A hold current, 11.9A trip current). The primary differences are packaging format (Cut Tape vs. Bag) and physical dimensions (11.20mm x 3.00mm vs. 10.70mm x 2.50mm). Lead spacing tolerance is 5.10mm versus 5.05mm, which is within acceptable range for through-hole assembly. Regulatory approvals differ slightly (cURus, TUV vs. CSA, TUV, UL).

Q: Is MF-RG700-0 from Bourns compatible with RGEF700?

A: MF-RG700-0 meets the core electrical requirements with 16V maximum voltage and 7A hold current. Initial and post-trip resistance values are within acceptable tolerance ranges. The time to trip specification is 8 seconds versus 4.6 seconds for RGEF700. Physical dimensions and lead spacing support through-hole radial mounting. This part is suitable for applications where the extended trip time does not conflict with circuit protection requirements.

Q: What packaging formats are available for these substitute parts?

A: RGEF700 and RGEF700-1 are supplied in Bag packaging. 16R700GMR is supplied in Cut Tape (CT) format. MF-RG700-0 is supplied in Bulk packaging. Packaging selection should align with assembly process requirements and inventory management practices.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RGEF700, 16R700GMR, RGEF700-1, and MF-RG700-0 are all ROHS3 compliant and REACH unaffected, supporting regulatory requirements for electronic component sourcing.

Q: What regulatory certifications apply to each part?

A: RGEF700 and RGEF700-1 carry CSA, TUV, and UL approvals. 16R700GMR carries cURus and TUV approvals. MF-RG700-0 carries CSA, TUV, and UR approvals. Selection should consider specific regulatory requirements for the target application and market.