0ABB-3000-TM Equivalent & Substitute Parts

Part Overview

The 0ABB-3000-TM is a 3 A, 32 V DC surface mount board mount fuse manufactured by Bel Fuse Inc. in 0603 (1608 Metric) package format. This slow blow fuse is designed for circuit protection in surface mount applications with a breaking capacity of 50 A at rated voltage. The part maintains Active product status with AEC-Q200 and cURus approval certifications. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and functional characteristics align with the original specification, enabling direct replacement in compatible applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	0ABB-3000-TM
Manufacturer	Bel Fuse Inc.
Current Rating	3 A
Voltage Rating - DC	32 V
Response Time	Slow Blow
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount
Fuse Type	Board Mount (Cartridge Style Excluded)
Breaking Capacity @ Rated Voltage	50 A
Operating Temperature Range	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 0ABB-3000-TM are qualified based on the following critical parameters:

Electrical Equivalence Requirements:

Current Rating: 3 A
Voltage Rating - DC: 32 V
Response Time: Slow Blow
Breaking Capacity @ Rated Voltage: 50 A (or higher)

Mechanical Equivalence Requirements:

Package / Case: 0603 (1608 Metric)
Mounting Type: Surface Mount
Fuse Type: Board Mount (Cartridge Style Excluded)

Compliance Requirements:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

The substitute parts identified are manufactured by Bourns Inc. within the SinglFuse™ product family. All substitutes maintain the same current rating, voltage rating, response time classification, and package format. Variations in melting I²t, DC cold resistance, operating temperature range, and approval agencies are documented to enable informed selection based on specific application requirements.

Parameter Comparison

Parameter	0ABB-3000-TM	SF-0603S300-2	SF-0603S300M-2	SF-0603SA300M-2	SF-0603SP300-2	SF-0603SP300M-2
Manufacturer	Bel Fuse Inc.	Bourns Inc.	Bourns Inc.	Bourns Inc.	Bourns Inc.	Bourns Inc.
Current Rating (Amps)	3 A	3 A	3 A	3 A	3 A	3 A
Voltage Rating - DC	32 V	32 V	32 V	35 V	32 V	32 V
Response Time	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow	Slow Blow
Package / Case	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Fuse Type	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)	Board Mount (Cartridge Style Excluded)
Breaking Capacity @ Rated Voltage	50 A	50 A	35 A	50 A	50 A	50 A
Melting I²t	0.28	0.21	0.18	0.343	0.21	0.87
Operating Temperature Range	-55°C ~ 150°C	-20°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 150°C	-40°C ~ 105°C	-55°C ~ 150°C
DC Cold Resistance (Ohms)	35	0.016	0.025	Not Specified	Not Specified	0.031
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Full Electrical and Thermal Equivalence):

SF-0603SP300M-2 and SF-0603SA300M-2 provide the closest operational alignment with the 0ABB-3000-TM. Both parts maintain the full operating temperature range of -55°C to 150°C, matching the original specification. SF-0603SP300M-2 maintains 50 A breaking capacity and 32 V DC rating. SF-0603SA300M-2 provides enhanced voltage rating at 35 V DC with 50 A breaking capacity, suitable for applications requiring higher voltage margin.

Secondary Substitutes (Reduced Operating Temperature Range):

SF-0603S300-2 and SF-0603SP300-2 operate within -20°C to 105°C and -40°C to 105°C ranges respectively, representing reduced thermal operating windows compared to the original part. Both maintain 50 A breaking capacity and 32 V DC rating. These parts are suitable for applications with constrained temperature environments within their specified ranges.

Limited Substitute (Reduced Breaking Capacity):

SF-0603S300M-2 operates within -55°C to 125°C with 35 A breaking capacity, below the original 50 A specification. This part is suitable only for applications where 35 A breaking capacity is acceptable.

All substitute parts maintain Active product status, ROHS3 compliance, and MSL 1 rating. Selection should be based on specific application requirements for operating temperature range, breaking capacity, and voltage margin.

Frequently Asked Questions (FAQ)

Q: Can SF-0603S300-2 directly replace 0ABB-3000-TM in all applications?

A: SF-0603S300-2 provides electrical equivalence at 3 A, 32 V DC with 50 A breaking capacity and identical 0603 package format. However, the operating temperature range is limited to -20°C to 105°C compared to the original -55°C to 150°C. Direct replacement is valid only for applications operating within the -20°C to 105°C window.

Q: What is the significance of the melting I²t parameter in substitute selection?

A: Melting I²t defines the thermal energy required to melt the fuse element. The 0ABB-3000-TM specifies 0.28, while substitutes range from 0.18 to 0.87. Lower I²t values indicate faster response to overcurrent conditions. Selection should align with circuit protection timing requirements specific to the application.

Q: Is SF-0603SA300M-2 suitable as a substitute despite the 35 V DC rating versus 32 V DC?

A: SF-0603SA300M-2 with 35 V DC rating is electrically compatible with 32 V DC applications, as the higher voltage rating provides additional safety margin. The part maintains 3 A current rating, slow blow response, 50 A breaking capacity, and full -55°C to 150°C operating range. This part is suitable for direct substitution.

Q: Why does SF-0603S300M-2 have a lower breaking capacity of 35 A?

A: SF-0603S300M-2 is specified with 35 A breaking capacity at rated voltage, below the original 50 A specification. This part is suitable only for applications where the circuit protection requirement does not exceed 35 A breaking capacity.

Q: Are all substitute parts available in the same packaging format?

A: The 0ABB-3000-TM is supplied in Cut Tape (CT) & Digi-Reel® packaging. All Bourns substitute parts are supplied in Tape & Reel (TR) format. Both packaging formats are compatible with automated assembly processes and provide equivalent component protection and handling characteristics.

Q: What approval certifications should be considered when selecting a substitute?

A: The 0ABB-3000-TM carries AEC-Q200 and cURus certifications. Substitute parts carry varying certifications: SF-0603S300-2 and SF-0603SP300-2 carry UL approval; SF-0603SA300M-2 carries cUL approval; SF-0603S300M-2 and SF-0603SP300M-2 carry no specified approval agency. Application requirements for specific certifications should determine substitute selection.

Q: Can DC cold resistance variations affect circuit performance?

A: DC cold resistance values range from 0.016 Ohms to 35 Ohms across the part family. The 0ABB-3000-TM specifies 35 Ohms, while Bourns substitutes specify significantly lower values (0.016 to 0.031 Ohms). Lower cold resistance reduces voltage drop across the fuse during normal operation. Application circuits with tight voltage margin specifications should account for this parameter difference.

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