Littelfuse 02183.15MXE Glass Cartridge Fuse 3.15A 250VAC 5x20mm Equivalent & Substitute Parts

Part Overview

The Littelfuse 02183.15MXE is a 3.15 A, 250 V AC/DC glass cartridge fuse with slow-blow response characteristics, designed for through-hole mounting in 5mm x 20mm form factor applications. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for seamless circuit protection replacement.

Key Parameters

Parameter	Value
Current Rating	3.15 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Response Time	Slow Blow
Package / Case	5mm x 20mm (Axial)
Mounting Type	Through Hole
Breaking Capacity @ Rated Voltage	35 A
Operating Temperature Range	-55°C to 125°C

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: current rating (3.15 A), voltage rating (250 V AC), fuse type (cartridge glass), response time (slow blow), package dimensions (5mm x 20mm), and mounting configuration (through hole). All identified substitutes maintain these core electrical and mechanical specifications. Breaking capacity variations and melting I²t differences are noted but do not preclude substitution where the primary protective function remains unchanged. Compliance certifications and product status are secondary selection criteria based on application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Current Rating (A)	Voltage Rating (V AC)	Response Time	Package	Breaking Capacity (A)	Melting I²t	DC Cold Resistance (Ohms)	Product Status
02183.15MXE	Littelfuse Inc.	218	3.15	250	Slow Blow	5mm x 20mm	35	39.2	0.017	Obsolete
02183.15MXEP	Littelfuse Inc.	218	3.15	250	Slow Blow	5mm x 20mm	35	38.15	0.0173	Active
02133.15MXEP	Littelfuse Inc.	213	3.15	250	Slow Blow	5mm x 20mm	35	202	0.0231	Active
02193.15MXAEP	Littelfuse Inc.	219XA	3.15	250	Slow Blow	5mm x 20mm	150	202	0.0231	Active
0034.3122.PT	SCHURTER Inc.	FST 5x20	3.15	250	Slow Blow	5mm x 20mm	35	47	—	Active
BK/GDC-V-3.15A	Eaton - Electronics Division	GDC	3.15	250	Slow Blow	5mm x 20mm	35	96.4	0.0185	Active
BK/S506-V-3.15R	Eaton - Electronics Division	S506	3.15	250	Slow Blow	5mm x 20mm	35	96.4	0.0185	Active

Engineering Selection Recommendations

For direct replacement of the obsolete 02183.15MXE, the 02183.15MXEP (Littelfuse, Series 218, Active status) provides the closest electrical match with identical series designation and minimal variance in melting I²t (38.15 vs. 39.2) and DC cold resistance (0.0173 vs. 0.017 Ohms). This part carries ROHS3 compliance and expanded certification coverage (CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE).

The 02133.15MXEP (Littelfuse, Series 213, Active status) and 02193.15MXAEP (Littelfuse, Series 219XA, Active status) are parametric equivalents with identical current and voltage ratings. The 02193.15MXAEP offers enhanced breaking capacity (150 A vs. 35 A) and ROHS3 compliance, suitable for applications requiring higher fault current withstand capability.

The 0034.3122.PT (SCHURTER, FST 5x20 series, Active status) provides cross-manufacturer equivalence with cURus certification and ROHS3 compliance. Dimensional variance (5.40mm diameter vs. 5.80mm) remains within mechanical tolerance for standard 5x20mm fuse holders.

The BK/GDC-V-3.15A and BK/S506-V-3.15R (Eaton, Active status) deliver manufacturer-recommended alternatives with cULus/IMQ certifications and ROHS3 compliance. The S506 series includes broader international certification (BSI, CCC, CSA, CURUS, IMQ, PSE/JET, SEMKO, VDE).

Frequently Asked Questions (FAQ)

Q: Can the 02183.15MXEP directly replace the obsolete 02183.15MXE?

A: Yes. Both parts share identical series designation (218), current rating (3.15 A), voltage rating (250 V AC), response time (slow blow), and package dimensions (5mm x 20mm). The 02183.15MXEP is the active production equivalent with enhanced compliance certifications.

Q: What is the significance of melting I²t variation among substitutes?

A: Melting I²t defines the thermal energy required to melt the fuse element. Variations (ranging from 38.15 to 202 in this group) reflect different fuse element designs within the same current and voltage class. Selection depends on circuit-specific thermal characteristics and protection coordination requirements. All listed substitutes maintain the 3.15 A current threshold.

Q: Are dimensional differences between 5.40mm and 5.80mm diameter critical?

A: Standard 5x20mm fuse holders accommodate both dimensions. The 0034.3122.PT (5.40mm) and Littelfuse parts (5.80mm) are mechanically compatible with conventional fuse clips and cartridge holders. Verify holder specifications for non-standard applications.

Q: Which substitute offers the highest breaking capacity?

A: The 02193.15MXAEP (Littelfuse, Series 219XA) provides 150 A breaking capacity compared to 35 A for other substitutes. This enhanced rating is applicable in high fault-current environments while maintaining identical 3.15 A trip characteristics.

Q: What compliance advantage does the BK/S506-V-3.15R provide?

A: The BK/S506-V-3.15R (Eaton, Series S506) carries the broadest international certification portfolio (BSI, CCC, CSA, CURUS, IMQ, PSE/JET, SEMKO, VDE) and ROHS3 compliance, supporting global market deployment and regulatory requirements across multiple jurisdictions.

Q: Is the SCHURTER 0034.3122.PT suitable for all applications requiring the 02183.15MXE?

A: Yes, provided the fuse holder accommodates the 5.40mm diameter. The 0034.3122.PT maintains electrical equivalence (3.15 A, 250 V, slow blow, 5x20mm package) with cURus certification and ROHS3 compliance. Verify mechanical fit in existing assemblies.

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