Littelfuse 02133.15M Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 02133.15M is a 3.15 A, 250 V AC/DC glass cartridge fuse in the 213 series with a 5mm x 20mm form factor. This component is classified as obsolete, requiring identification of active equivalent alternatives for ongoing system support and procurement. The part requires a fuse holder for installation and operates across a temperature range of -55°C to 125°C with slow-blow response characteristics.

Key Parameters

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

Substitute Part Grouping Explanation

Substitute parts for the 02133.15M are grouped into two categories based on electrical and mechanical compatibility:

Category 1: Series 213 Active Equivalents These parts maintain identical electrical specifications and series designation. Substitution is based on matching current rating (3.15 A), voltage rating (250 V AC), response time (Slow Blow), package dimensions (5mm x 20mm), breaking capacity (35 A), and melting I²t value (202). All parts in this category are active products with RoHS3 compliance.

Qualifying parts: 02133.15HXP, 02133.15MXBP, 02133.15MXP, 02133.15TXP

Category 2: Series 218 Functional Equivalents These parts share identical electrical ratings and physical dimensions but belong to the 218 series with different melting I²t characteristics (38.15 vs. 202). Substitution is permissible where the different thermal response does not conflict with circuit protection requirements. All parts are active with RoHS3 compliance.

Qualifying parts: 02183.15HXP, 02183.15MXBP, 02183.15MXF18P, 02183.15MXF34P, 02183.15MXF5P, 02183.15MXF7P

Parameter Comparison

Part Number	Series	Current (A)	Voltage (V AC)	Package	Response Time	Breaking Capacity (A)	Melting I²t	Product Status	RoHS Status
02133.15M	213	3.15	250	5mm x 20mm	Slow Blow	35	202	Obsolete	Non-compliant
02133.15HXP	213	3.15	250	5mm x 20mm	Slow Blow	35	202	Active	ROHS3 Compliant
02133.15MXBP	213	3.15	250	5mm x 20mm	Slow Blow	35	202	Active	ROHS3 Compliant
02133.15MXP	213	3.15	250	5mm x 20mm	Slow Blow	35	202	Active	ROHS3 Compliant
02133.15TXP	213	3.15	250	5mm x 20mm	Slow Blow	35	202	Active	ROHS3 Compliant
02183.15HXP	218	3.15	250	5mm x 20mm	Slow Blow	35	38.15	Active	ROHS3 Compliant
02183.15MXBP	218	3.15	250	5mm x 20mm	Slow Blow	35	38.15	Active	ROHS3 Compliant
02183.15MXF18P	218	3.15	250	5mm x 20mm	Slow Blow	35	38.15	Active	ROHS3 Compliant
02183.15MXF34P	218	3.15	250	5mm x 20mm	Slow Blow	35	38.15	Active	ROHS3 Compliant
02183.15MXF5P	218	3.15	250	5mm x 20mm	Slow Blow	35	38.15	Active	ROHS3 Compliant
02183.15MXF7P	218	3.15	250	5mm x 20mm	Slow Blow	35	38.15	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Selection: Series 213 Equivalents For direct replacement of the 02133.15M, select from the Series 213 active parts: 02133.15HXP, 02133.15MXBP, 02133.15MXP, or 02133.15TXP. These maintain identical electrical characteristics and melting I²t values. All are active products with RoHS3 compliance, addressing the obsolescence of the original part while preserving circuit protection behavior.

Secondary Selection: Series 218 Equivalents Series 218 parts (02183.15HXP, 02183.15MXBP, 02183.15MXF18P, 02183.15MXF34P, 02183.15MXF5P, 02183.15MXF7P) are functionally equivalent in current, voltage, and physical dimensions. The reduced melting I²t value (38.15 vs. 202) results in faster thermal response. Selection of Series 218 parts is appropriate where circuit design accommodates faster fuse operation or where thermal protection requirements align with the lower I²t characteristic.

Compliance Considerations All substitute parts carry RoHS3 compliance, addressing regulatory requirements that the obsolete 02133.15M does not meet. Certification agencies differ between Series 213 (BSI, CCC, CE, CSA, PSE, SEMKO, UR, VDE) and Series 218 (CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE). Verify that the selected substitute meets the specific agency approvals required by your application.

Frequently Asked Questions (FAQ)

Q: Can Series 218 parts directly replace Series 213 parts? A: Series 218 and Series 213 parts share identical current ratings, voltage ratings, and physical dimensions. The primary difference is melting I²t value (38.15 for Series 218 vs. 202 for Series 213). This results in faster thermal response in Series 218. Direct substitution is permissible where circuit protection requirements accommodate the faster response characteristic.

Q: What is the significance of the melting I²t parameter? A: Melting I²t defines the thermal energy required to melt the fuse element. Lower I²t values (Series 218 at 38.15) indicate faster fuse operation under overload conditions. Higher I²t values (Series 213 at 202) provide greater tolerance to transient current spikes before fuse activation. Selection depends on circuit protection strategy and tolerance for inrush currents.

Q: Are all substitute parts compatible with existing fuse holders? A: Yes. All substitute parts maintain the 5mm x 20mm package dimension and require a fuse holder for installation, identical to the original 02133.15M. Physical compatibility with existing holders is assured.

Q: Why is the original 02133.15M classified as obsolete? A: The 02133.15M is obsolete and does not meet current RoHS3 compliance requirements. All active substitute parts listed are RoHS3 compliant, making them suitable for new designs and ongoing procurement where regulatory compliance is required.

Q: What packaging options are available for substitute parts? A: All substitute parts are supplied in bulk packaging. Packaging format does not affect electrical or mechanical compatibility; it reflects procurement and distribution configuration only.

Q: How do DC cold resistance values compare between parts? A: Series 213 parts maintain 0.0231 Ohms DC cold resistance, while Series 218 parts have 0.0173 Ohms. This difference reflects the different fuse element design between series but does not affect substitution compatibility for standard circuit protection applications.

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