Equivalent & Substitute Parts for AP/ETF-200MA

Part Overview

The AP/ETF-200MA is a 200 mA board mount fuse manufactured by Eaton - Electronics Division, rated for 277 V AC operation with slow blow response characteristics. This component is classified as obsolete, necessitating identification of active substitute parts for new designs and ongoing production requirements. The part features radial, can-style vertical mounting for through-hole PCB applications with a breaking capacity of 100 A at rated voltage.

Substiute Parts

AP/ETF-200MA

Eaton - Electronics DivisionIn Stock: 745AP/ETF-200MA Datasheet

Current PartRFQ

SR-5-200MA-AP

Eaton - Electronics DivisionIn Stock: 1264SR-5-200MA-AP Datasheet

SimilarRFQ

MRT 200-BULK

Bel Fuse Inc.In Stock: 1652MRT 200-BULK Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP/ETF-200MA is determined by the following critical parameters:

Primary Matching Criteria:

• Current Rating: 200 mA (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can, Vertical (exact match required)
• Fuse Type: Board Mount (Cartridge Style Excluded) (exact match required)

Secondary Compatibility Factors:

• Voltage Rating (AC): Substitute parts must equal or exceed the original 277 V rating, or operate within the application's actual voltage requirements
• Physical Dimensions: Substitute parts must fit the PCB footprint; dimensional variations within manufacturing tolerance are acceptable
• Operating Temperature Range: Substitute parts must support the application's thermal environment
• Breaking Capacity: Substitute parts must provide adequate fault protection

The identified substitute parts (SR-5-200MA-AP and MRT 200-BULK) match all primary criteria. However, both substitutes are rated for 250 V AC, which is lower than the original 277 V specification. These substitutes are suitable only for applications operating at or below 250 V AC.

Parameter Comparison

Engineering Selection Recommendations

For applications operating at 250 V AC or below:

SR-5-200MA-AP (Eaton - Electronics Division) is suitable as a direct substitute. This part maintains active product status with expanded regulatory approvals (CCC, cULus, KC-MARK, SEMKO, VDE). The dimensional increase (0.335" Dia x 0.319" H versus 0.329" Dia x 0.303" H) requires PCB footprint verification. Operating temperature range is reduced to -40°C ~ 85°C; applications requiring -55°C operation are not compatible. RoHS compliance status is confirmed.

MRT 200-BULK (Bel Fuse Inc.) is suitable as a direct substitute for 250 V AC applications. This part maintains identical physical dimensions (0.329" Dia x 0.303" H) to the original AP/ETF-200MA, eliminating footprint concerns. Operating temperature range matches the original (-55°C ~ 125°C). Regulatory approvals include AEC-Q200 certification and ROHS3 compliance. Breaking capacity (50 A) is lower than the original (100 A) but exceeds SR-5-200MA-AP (35 A).

For applications requiring 277 V AC operation:

Neither substitute part is rated for 277 V AC. Alternative components rated for 277 V AC must be sourced. The AP/ETF-200MA remains the only specified option for this voltage class within the provided data.

Frequently Asked Questions (FAQ)

Q: Can SR-5-200MA-AP or MRT 200-BULK be used in a 277 V AC circuit?

A: No. Both substitute parts are rated for 250 V AC maximum. Using either part in a 277 V AC circuit exceeds the voltage rating and creates a safety hazard. The original AP/ETF-200MA is rated for 277 V AC and must be retained for this application, or an alternative 277 V AC rated fuse must be sourced.

Q: What is the physical footprint difference between the main part and SR-5-200MA-AP?

A: The AP/ETF-200MA measures 0.329" Dia x 0.303" H (8.35mm x 7.70mm). The SR-5-200MA-AP measures 0.335" Dia x 0.319" H (8.50mm x 8.10mm). The diameter increases by 0.006" and height by 0.016". PCB hole spacing and clearance must be verified before substitution.

Q: Does MRT 200-BULK have identical dimensions to AP/ETF-200MA?

A: Yes. MRT 200-BULK shares the same dimensions as AP/ETF-200MA: 0.329" Dia x 0.303" H (8.35mm x 7.70mm). No PCB footprint modification is required for this substitution.

Q: What is the operating temperature difference between the main part and SR-5-200MA-AP?

A: AP/ETF-200MA operates from -55°C to 125°C. SR-5-200MA-AP operates from -40°C to 85°C. Applications requiring operation below -40°C or above 85°C are not compatible with SR-5-200MA-AP. MRT 200-BULK matches the original temperature range (-55°C ~ 125°C).

Q: Are both substitute parts RoHS compliant?

A: SR-5-200MA-AP is confirmed RoHS Compliant. MRT 200-BULK is ROHS3 Compliant. Both meet current RoHS requirements.

Q: What regulatory approvals do the substitute parts carry?

A: SR-5-200MA-AP carries CCC, cULus, KC-MARK, SEMKO, and VDE approvals. MRT 200-BULK carries AEC-Q200, CCC, CE, CSA, cURus, SEMKO, and VDE approvals. Both parts exceed the original AP/ETF-200MA approvals (SEMKO, UL).

Q: How do the breaking capacities compare?

A: AP/ETF-200MA: 100 A at rated voltage. SR-5-200MA-AP: 35 A at rated voltage. MRT 200-BULK: 50 A at rated voltage. MRT 200-BULK provides higher fault protection capability than SR-5-200MA-AP but lower than the original part.

Q: Can packaging format affect substitution?

A: Packaging format (Cut Tape for SR-5-200MA-AP, Bulk for MRT 200-BULK) does not affect electrical or mechanical compatibility. Packaging selection depends on procurement and assembly requirements, not circuit performance.