SS-5-1A-AP Equivalent & Substitute Parts

Part Overview

The SS-5-1A-AP is a board mount fuse manufactured by Eaton - Electronics Division, rated for 1 A at 250 V AC/DC with slow blow response characteristics. This through-hole radial fuse is designed for circuit protection in electronic applications requiring cartridge-style board mount solutions. The part is currently active in production with 1226 pieces available in new original stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same functional category, enabling component interchangeability in circuit designs where the primary part becomes unavailable or inventory constraints require alternative sourcing.

Substiute Parts

SS-5-1A-AP

Eaton - Electronics DivisionIn Stock: 1238SS-5-1A-AP Datasheet

Current PartRFQ

SS-5H-1A-AP

Eaton - Electronics DivisionIn Stock: 11389SS-5H-1A-AP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS-5-1A-AP with the SS-5H-1A-AP is based on strict equivalence of the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Current Rating: Both parts rated at 1 A
• Voltage Rating - AC: Both rated at 250 V
• Response Time: Both classified as Slow Blow
• Melting I²t: Both specified at 7.4

Mechanical Equivalence Criteria:

• Fuse Type: Both are Board Mount (Cartridge Style Excluded)
• Mounting Type: Both are Through Hole
• Package / Case: Both are Radial, Box configuration
• Physical Dimensions: Identical at 0.335" L x 0.169" W x 0.329" H (8.50mm x 4.30mm x 8.35mm)
• Operating Temperature Range: Both operate across -40°C ~ 125°C

Functional Compatibility: Both parts serve identical circuit protection functions in board-level applications. The substitute maintains the same electrical performance envelope and physical footprint, ensuring direct replacement capability in existing PCB designs without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (SS-5-1A-AP): The SS-5-1A-AP remains the specified component when original design documentation references this exact part number. This part maintains active production status and carries multiple international approvals including CQC, cULus, EK-MARK, PSE, SEMKO, and VDE certifications. RoHS compliance is confirmed for standard applications.

Substitute Part Selection (SS-5H-1A-AP): The SS-5H-1A-AP serves as a direct functional equivalent when the primary part is unavailable. This substitute maintains identical electrical ratings (1 A, 250 V AC, Slow Blow response) and physical dimensions, ensuring PCB compatibility without design modification. The SS-5H-1A-AP offers higher inventory availability (11369 pieces) and carries ROHS3 compliance certification. International approvals include CQC, cURus, KC, PSE, TUV, and VDE. Both parts are manufactured by Eaton - Electronics Division and share the same ECCN (EAR99) and HTSUS (8536.10.0040) classifications.

Compliance Considerations: Both parts satisfy RoHS requirements for their respective compliance levels. The SS-5H-1A-AP carries REACH Unaffected status. Selection between these parts should account for specific regulatory requirements of the target application and regional compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can SS-5H-1A-AP replace SS-5-1A-AP in existing circuit designs?

A: Yes. Both parts share identical electrical ratings (1 A, 250 V AC, Slow Blow), melting I²t characteristics (7.4), and physical dimensions (0.335" L x 0.169" W x 0.329" H). Through-hole radial mounting is identical, enabling direct PCB footprint compatibility without layout changes.

Q: What are the key differences between these substitute parts?

A: The primary differences are: (1) Series designation (SS-5 versus SS-5H), (2) Breaking Capacity at Rated Voltage (35A versus 100A), (3) DC Cold Resistance (0.08075 Ohms versus 78 Ohms), (4) RoHS compliance level (RoHS Compliant versus ROHS3 Compliant), (5) Approval agency certifications (different regional certifications), and (6) Inventory availability (1226 pieces versus 11369 pieces).

Q: Are the physical dimensions identical?

A: Yes. Both SS-5-1A-AP and SS-5H-1A-AP are specified at 0.335" L x 0.169" W x 0.329" H (8.50mm x 4.30mm x 8.35mm). PCB footprints are interchangeable.

Q: Do both parts operate across the same temperature range?

A: Yes. Both parts are rated for -40°C ~ 125°C operating temperature range, ensuring equivalent thermal performance in circuit applications.

Q: Which part should be selected for new designs?

A: Selection depends on application-specific requirements. For designs requiring the original specification, use SS-5-1A-AP. For applications where higher breaking capacity (100A versus 35A) is beneficial, or where ROHS3 compliance is mandated, the SS-5H-1A-AP is appropriate. Both parts maintain active production status.

Q: Are packaging formats identical?

A: Yes. Both parts are supplied in Cut Tape (CT) packaging format, ensuring consistent handling and assembly compatibility.