Littelfuse 0315005.H Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0315005.H is a 5 A, 250 V AC/DC slow-blow glass cartridge fuse in the 3AB/3AG package format (1/4" x 1-1/4" axial). This component is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing circuit protection applications. Direct substitutes are available from the same manufacturer series with identical electrical and mechanical specifications but current product status and improved compliance certifications.

Key Parameters

Parameter	Value
Current Rating	5 A
Voltage Rating (AC)	250 V
Response Time	Slow Blow
Fuse Type	Cartridge, Glass
Package / Case	3AB, 3AG, 1/4" x 1-1/4" (Axial)
Breaking Capacity @ Rated Voltage	200 A
Melting I²t	140
Operating Temperature Range	-55°C ~ 125°C
Size / Dimension	0.275" Dia x 1.275" L (6.99mm x 32.39mm)
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution of the 0315005.H is based on strict electrical and mechanical parameter matching within the Littelfuse 315 series. All substitute parts maintain identical specifications across the following critical parameters:

Current Rating: 5 A
Voltage Rating (AC): 250 V
Response Time: Slow Blow
Fuse Type: Cartridge, Glass
Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial)
Breaking Capacity @ Rated Voltage: 200 A
Melting I²t: 140
Operating Temperature Range: -55°C ~ 125°C
Physical Dimensions: 0.275" Dia x 1.275" L (6.99mm x 32.39mm)

The substitute parts differ only in packaging configuration (bulk vs. original), product status (active vs. obsolete), and regulatory compliance certifications. DC cold resistance values remain within acceptable tolerance (0.0212 Ohms to 0.0214 Ohms).

Parameter Comparison

Part Number	Manufacturer	Current Rating (A)	Voltage Rating (AC)	Response Time	Package / Case	Breaking Capacity (A)	Melting I²t	Operating Temperature	DC Cold Resistance (Ohms)	Product Status	RoHS Status
0315005.H	Littelfuse Inc.	5	250 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	200	140	-55°C ~ 125°C	0.0212	Obsolete	RoHS Non-Compliant
0315005.HXP	Littelfuse Inc.	5	250 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	200	140	-55°C ~ 125°C	0.0214	Active	ROHS3 Compliant
0315005.MXP	Littelfuse Inc.	5	250 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	200	140	-55°C ~ 125°C	0.0214	Active	ROHS3 Compliant
0315005.MXSLP	Littelfuse Inc.	5	250 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	200	140	-55°C ~ 125°C	0.0214	Active	ROHS3 Compliant
0315005.VXP	Littelfuse Inc.	5	250 V	Slow Blow	3AB, 3AG, 1/4" x 1-1/4"	200	140	-55°C ~ 125°C	0.0214	Active	ROHS3 Compliant

Engineering Selection Recommendations

All four substitute parts (0315005.HXP, 0315005.MXP, 0315005.MXSLP, 0315005.VXP) are direct functional equivalents to the obsolete 0315005.H. Selection among these active alternatives should be based on the following factors:

Regulatory Compliance: The 0315005.HXP, 0315005.MXP, and 0315005.VXP carry CE, CSA, and UL certifications. The 0315005.MXSLP additionally includes KC and METI certifications. All four parts are ROHS3 compliant and REACH unaffected, addressing modern environmental and safety requirements.

Approval Agencies: For applications requiring specific regional certifications, 0315005.MXSLP and 0315005.VXP provide the broadest approval coverage (CE, CSA, KC, PSE/METI, UL). The 0315005.HXP and 0315005.MXP provide CE, CSA, and UL certifications.

Inventory Availability: Current stock levels are 0315005.VXP (1140 pcs), 0315005.HXP (1068 pcs), 0315005.MXSLP (714 pcs), and 0315005.MXP (645 pcs).

Frequently Asked Questions (FAQ)

Q: Can 0315005.HXP, 0315005.MXP, 0315005.MXSLP, or 0315005.VXP be used as direct replacements for the obsolete 0315005.H?

A: Yes. All four parts are electrically and mechanically identical to the 0315005.H across all critical parameters: 5 A current rating, 250 V AC voltage rating, slow-blow response time, 3AB/3AG package format, and identical physical dimensions. The substitute parts are active products with current manufacturing status and improved compliance certifications.

Q: What is the difference between the substitute part numbers?

A: The substitute parts differ in packaging configuration and regulatory certifications. All maintain identical electrical specifications and physical dimensions. Selection should be based on specific regional certification requirements and inventory availability for your application.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. The substitute parts are pin-compatible, mechanically identical in form factor, and electrically equivalent. They mount identically in through-hole applications using the same 1/4" x 1-1/4" axial configuration.

Q: What certifications do the substitute parts carry?

A: All substitute parts carry CE, CSA, and UL certifications. The 0315005.MXSLP and 0315005.VXP additionally include KC and PSE/METI certifications. All are ROHS3 compliant.

Q: Is there a performance difference in the DC cold resistance between the main part and substitutes?

A: The DC cold resistance of the 0315005.H is 0.0212 Ohms, while all substitute parts measure 0.0214 Ohms. This 0.0002 Ohm difference is within acceptable tolerance for fuse cartridge applications and does not affect functional performance.

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