PSR-27893 Equivalent & Substitute Parts

Part Overview

The PSR-27893 is a PTC resettable fuse chip component manufactured by Littelfuse Inc. in 0603 package format. This part is classified as obsolete and is no longer in active production. Due to its obsolete status, identification of equivalent substitute components is necessary for ongoing design support, maintenance, and new production requirements. The PSR-27893 was designed for surface mount applications requiring resettable fuse protection.

Substiute Parts

PSR-27893

Littelfuse Inc.In Stock: 1214PSR-27893 Datasheet

Current PartRFQ

SF-0603SP700M-2

Bourns Inc.In Stock: 5144SF-0603SP700M-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PSR-27893 is based on functional equivalence within the fuse component category. The primary substitute identified is the SF-0603SP700M-2 manufactured by Bourns Inc. This substitution is valid based on the following alignment criteria:

Key Substitution Parameters:

• Package format: Both components utilize 0603 (1608 Metric) surface mount packaging
• Fuse classification: Both are board mount fuse devices
• Current rating: SF-0603SP700M-2 provides 7 A protection
• Voltage rating: SF-0603SP700M-2 rated for 32 V DC operation
• Response characteristic: Slow blow fuse type
• Moisture sensitivity: Both rated MSL 1 (Unlimited)
• Compliance: SF-0603SP700M-2 is RoHS3 compliant and REACH unaffected

The SF-0603SP700M-2 represents an active production alternative suitable for applications previously served by the obsolete PSR-27893.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Production:

The SF-0603SP700M-2 is the designated substitute for the obsolete PSR-27893. This component is currently in active production status with 5076 units available in inventory. The SF-0603SP700M-2 maintains identical 0603 surface mount package geometry, ensuring direct PCB footprint compatibility.

Compliance Considerations:

The SF-0603SP700M-2 carries RoHS3 compliance certification and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution. The EAR99 export classification applies to this substitute component.

Operational Parameters:

The SF-0603SP700M-2 operates across the temperature range of -55°C to 150°C with a DC cold resistance of 0.008 Ohms and breaking capacity of 80 A at rated voltage. The melting I²t value is specified as 5.

Inventory Availability:

Existing PSR-27893 inventory of 1138 units remains available for legacy system support. The SF-0603SP700M-2 substitute is available in Tape & Reel packaging format with 5076 units in stock.

Frequently Asked Questions (FAQ)

Q: Can the SF-0603SP700M-2 be used as a direct replacement for the PSR-27893 in existing designs?

A: The SF-0603SP700M-2 is compatible with PCB layouts designed for 0603 surface mount packages. Both components share identical package dimensions (0.063" L x 0.031" W x 0.031" H). Electrical parameter verification against your specific circuit requirements is necessary before implementation.

Q: What is the primary difference between the PSR-27893 and SF-0603SP700M-2?

A: The PSR-27893 is a PTC resettable fuse in obsolete status. The SF-0603SP700M-2 is an active production board mount fuse. Both utilize 0603 surface mount packaging and MSL 1 moisture sensitivity rating.

Q: Are there packaging format differences between these components?

A: The PSR-27893 packaging format is not specified in available documentation. The SF-0603SP700M-2 is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations.

Q: Does the SF-0603SP700M-2 meet current regulatory requirements?

A: Yes. The SF-0603SP700M-2 is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What is the current rating of the SF-0603SP700M-2?

A: The SF-0603SP700M-2 is rated for 7 A continuous current with 32 V DC voltage rating and slow blow response characteristic.

Q: Is the PSR-27893 still available for purchase?

A: The PSR-27893 is classified as obsolete. However, 1138 units remain available in current inventory. For new production, the SF-0603SP700M-2 is the recommended active production substitute.