SS-5H-1.25A-BK Equivalent & Substitute Parts

Part Overview

The SS-5H-1.25A-BK is a board mount fuse manufactured by Eaton - Electronics Division, rated for 1.25 A at 300 V AC/DC with slow blow response characteristics. This through-hole radial fuse is designed for circuit protection in electronic applications requiring cartridge-style exclusion and radial box packaging. The part maintains active product status with full international approval certifications. Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when inventory requirements necessitate alternative stock sources.

Substiute Parts

SS-5H-1.25A-BK

Eaton - Electronics DivisionIn Stock: 1060SS-5H-1.25A-BK Datasheet

Current PartRFQ

SS-5H-1.25A-BKH

Eaton - Electronics DivisionIn Stock: 1096SS-5H-1.25A-BKH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SS-5H-1.25A-BK are identified based on electrical and mechanical parameter equivalence within the SS-5H series. The substitution criteria are strictly limited to the following parameters:

• Current Rating: 1.25 A
• Voltage Rating (AC): 300 V
• Response Time: Slow Blow
• Mounting Type: Through Hole
• Fuse Type: Board Mount (Cartridge Style Excluded)
• Package / Case: Radial, Box
• Breaking Capacity @ Rated Voltage: 100 A
• Melting I²t: 12.75
• Operating Temperature Range: -40°C ~ 125°C
• DC Cold Resistance: 57 mOhms
• Size / Dimension: 0.335" L x 0.170" W x 0.337" H (8.50mm x 4.30mm x 8.55mm)
• Approval Agencies: CQC, cURus, KC, PSE, TUV, VDE

Parts meeting all these parameters are classified as direct parametric equivalents and may be substituted without circuit redesign or application re-evaluation.

Parameter Comparison

Engineering Selection Recommendations

Both the SS-5H-1.25A-BK and SS-5H-1.25A-BKH are active products manufactured by Eaton - Electronics Division with identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability and packaging requirements. Both parts carry equivalent international approvals including CQC, cURus, KC, PSE, TUV, and VDE certifications, confirming compliance with global safety and performance standards. The SS-5H-1.25A-BKH currently maintains higher inventory levels (1050 Pcs) compared to the SS-5H-1.25A-BK (985 Pcs), which may influence procurement decisions for high-volume applications. Both parts maintain identical RoHS non-compliance status and moisture sensitivity classification, requiring equivalent handling and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can SS-5H-1.25A-BKH be used as a direct replacement for SS-5H-1.25A-BK?

A: Yes. Both parts are parametric equivalents with identical current ratings (1.25 A), voltage ratings (300 V AC), response characteristics (Slow Blow), mounting configurations (Through Hole), package types (Radial, Box), and all electrical specifications including breaking capacity, melting I²t, and DC cold resistance. No circuit modifications are required.

Q: Are there any differences in approval certifications between these parts?

A: No. Both parts carry identical approval certifications from CQC, cURus, KC, PSE, TUV, and VDE, confirming equivalent compliance with international safety standards.

Q: What is the significance of the "BK" and "BKH" designations?

A: The designations represent different part numbers within the SS-5H series. Both maintain identical electrical and mechanical parameters. The suffix variation does not indicate functional differences relevant to circuit protection performance.

Q: Can these fuses be used in applications requiring RoHS compliance?

A: No. Both SS-5H-1.25A-BK and SS-5H-1.25A-BKH are RoHS non-compliant. Applications with RoHS requirements must identify alternative part numbers from the manufacturer's product portfolio.

Q: What is the operating temperature range for these fuses?

A: Both parts operate across the temperature range of -40°C to 125°C, providing thermal stability across industrial and commercial application environments.

Q: Are there any differences in physical dimensions between these substitute parts?

A: No. Both parts share identical dimensions of 0.335" L x 0.170" W x 0.337" H (8.50mm x 4.30mm x 8.55mm), ensuring mechanical compatibility in existing PCB layouts and mounting configurations.

Q: What does Moisture Sensitivity Level 1 indicate?

A: MSL 1 (Unlimited) indicates that these components have unlimited shelf life without special moisture control measures, simplifying storage and inventory management requirements.