SF-1206SP700-2 Equivalent & Substitute Parts

Part Overview

The SF-1206SP700-2 is a surface mount board fuse manufactured by Bourns Inc., rated for 7A at 32VDC with slow blow response characteristics. This component is part of the SinglFuse™ SF-1206SP series and is designed for circuit protection in compact 1206 (3216 Metric) package configurations. The part maintains Active product status with full RoHS3 compliance and UL approval. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set.

Substiute Parts

SF-1206SP700-2

Bourns Inc.In Stock: 4078SF-1206SP700-2 Datasheet

Current PartRFQ

SF-1206S700-2

Bourns Inc.In Stock: 5374SF-1206S700-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The SF-1206S700-2 qualifies as a parametric equivalent to the SF-1206SP700-2 based on the following critical substitution criteria:

• Current Rating: Both parts rated at 7A
• Voltage Rating (DC): Both rated at 32V
• Response Time: Both classified as Slow Blow
• Package / Case: Both use 1206 (3216 Metric) surface mount package
• Mounting Type: Both are surface mount board mount fuses
• Breaking Capacity @ Rated Voltage: Both rated at 50A
• Operating Temperature Range: Both operate across -20°C ~ 105°C
• Physical Dimensions: Identical at 0.122" L x 0.061" W x 0.024" H
• Approval Agency: Both carry UL approval
• RoHS Status: Both ROHS3 Compliant
• Manufacturer: Both manufactured by Bourns Inc.

The primary difference between these parts lies in the melting I²t characteristic (10.17 for SF-1206SP700-2 versus 5.684 for SF-1206S700-2), which reflects different thermal response profiles within the slow blow classification. Both parts maintain identical electrical and mechanical specifications for circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SF-1206SP700-2 and SF-1206S700-2 maintain Active product status with identical regulatory compliance profiles. Both parts carry UL approval and ROHS3 certification, ensuring suitability for applications requiring regulatory compliance. Selection between these parts should be based on circuit-specific thermal response requirements, as indicated by the melting I²t values. The SF-1206SP700-2 exhibits a higher melting I²t (10.17), while the SF-1206S700-2 provides a lower melting I²t (5.684), both within the slow blow classification. Inventory availability and lead time considerations may also influence part selection, with the SF-1206S700-2 currently showing higher stock levels (5300 Pcs versus 3994 Pcs).

Frequently Asked Questions (FAQ)

Q: Can SF-1206S700-2 be used as a direct replacement for SF-1206SP700-2?

A: Yes, the SF-1206S700-2 qualifies as a parametric equivalent. Both parts share identical current rating (7A), voltage rating (32VDC), response time classification (Slow Blow), package type (1206), and physical dimensions. The difference in melting I²t values indicates different thermal response profiles within the slow blow category and should be evaluated against specific circuit protection requirements.

Q: What is the significance of the melting I²t difference between these parts?

A: The melting I²t parameter characterizes the thermal energy required to melt the fuse element. The SF-1206SP700-2 has a melting I²t of 10.17, while the SF-1206S700-2 has 5.684. This difference affects the fuse's response to transient overcurrent conditions. Applications with specific thermal response requirements should verify compatibility with the intended circuit behavior.

Q: Are both parts suitable for the same PCB assembly process?

A: Yes. Both parts use identical 1206 (3216 Metric) surface mount packaging and share the same physical dimensions (0.122" L x 0.061" W x 0.024" H). Both are compatible with standard surface mount assembly equipment and reflow soldering processes. Moisture sensitivity level (MSL 1 - Unlimited) is identical for both parts.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the SF-1206SP700-2 and SF-1206S700-2 carry UL approval and maintain ROHS3 compliance. Both are classified as REACH Unaffected and share identical ECCN (EAR99) and HTSUS (8536.10.0040) designations.

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

A: Both parts operate across -20°C to 105°C, providing identical thermal operating windows for circuit protection applications.