Equivalent & Substitute Parts for TR/3216FF-375MA

Part Overview

The TR/3216FF-375MA is a 375 mA surface mount board mount fuse manufactured by Eaton - Electronics Division, rated for 32 V AC and 63 V DC operation. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement. The fuse features fast blow response characteristics and is packaged in the 1206 (3216 Metric) surface mount format. Substitute parts are available from multiple manufacturers with enhanced specifications and active product status.

Key Parameters

Parameter	Value
Current Rating	375 mA
Voltage Rating - AC	32 V
Voltage Rating - DC	63 V
Response Time	Fast Blow
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount
Fuse Type	Board Mount (Cartridge Style Excluded)
Breaking Capacity @ Rated Voltage	50 A
Operating Temperature Range	-55°C ~ 125°C
Approval Agency	CSA, UL

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical parameter compatibility with the TR/3216FF-375MA:

Direct Substitutes (Same Voltage Ratings):

TR/3216FF375-R (Eaton - Electronics Division): Identical voltage ratings (32 V AC / 63 V DC), same current rating, same package, active product status with RoHS3 compliance.

Upgrade Substitutes (Enhanced Voltage Ratings):

TR/3216LV375-R (Eaton - Electronics Division): Elevated voltage ratings (125 V AC / 125 V DC), same current rating and package, extended operating temperature range (-65°C ~ 125°C), active product status with RoHS3 compliance.
C1Q 375 (Bel Fuse Inc.): Mixed voltage ratings (125 V AC / 63 V DC), same current rating and package, higher breaking capacity (100 A AC / 50 A DC), active product status with CE, CSA, cULus certifications.
0437.375WR (Littelfuse Inc.): Elevated voltage ratings (125 V AC / 125 V DC), same current rating and package, extended operating temperature range (-55°C ~ 150°C), active product status with RoHS3 compliance.
0440.375WR (Littelfuse Inc.): Elevated voltage ratings (125 V AC / 125 V DC), same current rating and package, extended operating temperature range (-55°C ~ 150°C), active product status with RoHS3 compliance.

All substitute parts maintain the 375 mA current rating, 1206 (3216 Metric) package format, surface mount configuration, and fast blow response characteristic.

Parameter Comparison

Part Number	Manufacturer	Current Rating (mA)	Voltage AC (V)	Voltage DC (V)	Response Time	Package	Breaking Capacity	Operating Temp (°C)	Product Status	RoHS Status
TR/3216FF-375MA	Eaton	375	32	63	Fast Blow	1206 (3216)	50 A	-55 ~ 125	Obsolete	Non-compliant
TR/3216FF375-R	Eaton	375	32	63	Fast Blow	1206 (3216)	50 A	-55 ~ 125	Active	RoHS3 Compliant
TR/3216LV375-R	Eaton	375	125	125	Fast Blow	1206 (3216)	50 A	-65 ~ 125	Active	RoHS3 Compliant
C1Q 375	Bel Fuse Inc.	375	125	63	Fast Blow	1206 (3216)	100 A AC / 50 A DC	-55 ~ 125	Active	RoHS3 Compliant
0437.375WR	Littelfuse Inc.	375	125	125	Fast Blow	1206 (3216)	50 A	-55 ~ 150	Active	RoHS3 Compliant
0440.375WR	Littelfuse Inc.	375	125	125	Fast Blow	1206 (3216)	50 A	-55 ~ 150	Active	RoHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications): TR/3216FF375-R is the primary direct substitute for TR/3216FF-375MA. Both components share identical voltage ratings (32 V AC / 63 V DC), current rating (375 mA), and package format (1206 / 3216 Metric). TR/3216FF375-R holds active product status and RoHS3 compliance, addressing the obsolescence of the original part while maintaining electrical compatibility.

For Upgraded Applications (Enhanced Voltage Capability): TR/3216LV375-R, 0437.375WR, and 0440.375WR provide elevated voltage ratings (125 V AC / 125 V DC) suitable for applications requiring higher voltage margins. These parts maintain the 375 mA current rating and 1206 package format. TR/3216LV375-R and the Littelfuse options extend the operating temperature range to 150°C (0437.375WR and 0440.375WR), providing thermal headroom for demanding environments.

For Mixed Voltage Requirements: C1Q 375 (Bel Fuse Inc.) accommodates applications requiring 125 V AC with 63 V DC operation. This part features the highest breaking capacity (100 A AC / 50 A DC) and holds CE, CSA, and cULus certifications, supporting broader regulatory compliance requirements.

Compliance Considerations: All substitute parts hold RoHS3 compliance and active product status. The original TR/3216FF-375MA is RoHS non-compliant and obsolete. Selection of any substitute part addresses both regulatory and supply chain continuity concerns.

Frequently Asked Questions (FAQ)

Q: Can TR/3216FF375-R directly replace TR/3216FF-375MA without circuit modification?

A: Yes. TR/3216FF375-R maintains identical electrical specifications (375 mA, 32 V AC / 63 V DC), response time (fast blow), and package format (1206 / 3216 Metric). No circuit modification is required for direct substitution.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes (TR/3216FF375-R) maintain the original voltage ratings of 32 V AC and 63 V DC. Upgrade substitutes (TR/3216LV375-R, 0437.375WR, 0440.375WR, C1Q 375) provide higher voltage ratings (125 V AC and/or 125 V DC), allowing use in circuits with higher voltage requirements while maintaining the same current rating.

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

A: All substitute parts use the 1206 (3216 Metric) surface mount package. Packaging options differ: TR/3216FF375-R, TR/3216LV375-R, and C1Q 375 are supplied in Tape & Reel (TR) format. 0437.375WR is supplied in Tape & Reel (TR), while 0440.375WR is supplied in Cut Tape (CT) & Digi-Reel® format.

Q: Which substitute part has the highest breaking capacity?

A: C1Q 375 (Bel Fuse Inc.) has the highest breaking capacity at 100 A AC and 50 A DC, compared to 50 A for all other parts.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. All substitute parts are RoHS3 compliant. The original TR/3216FF-375MA is RoHS non-compliant.

Q: What is the operating temperature range for each substitute?

A: TR/3216FF375-R and C1Q 375 operate from -55°C to 125°C. TR/3216LV375-R operates from -65°C to 125°C. 0437.375WR and 0440.375WR operate from -55°C to 150°C, providing the widest thermal range.

Q: Can C1Q 375 be used in applications requiring both 125 V AC and 125 V DC?

A: C1Q 375 is rated for 125 V AC and 63 V DC. For applications requiring 125 V AC and 125 V DC operation, use TR/3216LV375-R, 0437.375WR, or 0440.375WR.

Q: What certifications do the substitute parts hold?

A: TR/3216FF375-R and TR/3216LV375-R hold CSA and UL certifications. C1Q 375 holds CE, CSA, and cULus certifications. 0437.375WR holds CSA and UR certifications. 0440.375WR holds CSA and UL certifications.

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