Equivalent & Substitute Parts for 0434005.NRP

Part Overview

The 0434005.NRP is a 5 A, 32 V AC/DC surface mount fuse in 0603 (1608 Metric) package manufactured by Littelfuse Inc. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design updates. The part operates across a temperature range of -55°C to 90°C with fast-blow response characteristics and is approved by CSA and UL agencies.

Substiute Parts

0434005.NRP

Littelfuse Inc.In Stock: 9230434005.NRP Datasheet

Current PartRFQ

0467005.NR

Littelfuse Inc.In Stock: 153890467005.NR Datasheet

Parametric EquivalentRFQ

0467005.NRHF

Littelfuse Inc.In Stock: 3284250467005.NRHF Datasheet

Parametric EquivalentRFQ

SF-0603F500-2

Bourns Inc.In Stock: 50448SF-0603F500-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0434005.NRP is determined by the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 5 A
• Voltage Rating (AC): 32 V
• Voltage Rating (DC): 32 V
• Package / Case: 0603 (1608 Metric)
• Mounting Type: Surface Mount
• Fuse Type: Board Mount (Cartridge Style Excluded)
• Response Time: Fast Blow

Substitute Categories:

Parametric Equivalents (Littelfuse Series 467): Parts 0467005.NR and 0467005.NRHF match all mandatory parameters and are direct functional replacements. Both are active products with improved specifications (lower melting I²t and DC cold resistance) and enhanced compliance status (ROHS3 Compliant, REACH Unaffected).

Manufacturer Recommended Equivalent (Bourns Inc.): Part SF-0603F500-2 matches all mandatory parameters but introduces variations in breaking capacity (50 A vs. 35 A), operating temperature range (-20°C ~ 105°C vs. -55°C ~ 90°C), and approval agencies (UL only vs. CSA and UL). This part is suitable for applications where the extended breaking capacity and higher operating temperature ceiling are acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Littelfuse Series 467):

Parts 0467005.NR and 0467005.NRHF are the primary substitutes for the obsolete 0434005.NRP. Both maintain identical electrical and mechanical specifications while offering active product status. The 0467005.NRHF variant is preferred due to significantly higher inventory availability (328,335 pcs vs. 15,300 pcs), ensuring supply chain continuity. Both parts achieve ROHS3 compliance and REACH Unaffected status, addressing modern regulatory requirements that the original part does not meet.

For Applications Requiring Extended Operating Temperature:

The SF-0603F500-2 from Bourns Inc. is suitable when the application environment exceeds 90°C or operates below -55°C. This part extends the upper temperature limit to 105°C and the lower limit to -20°C. The increased breaking capacity (50 A) provides additional fault protection margin. However, this substitution requires verification that CSA approval is not a mandatory requirement, as this part carries only UL certification.

Compliance Considerations:

All active substitute parts (0467005.NR, 0467005.NRHF, SF-0603F500-2) are ROHS3 compliant and REACH Unaffected, making them suitable for applications subject to environmental regulations. The original 0434005.NRP is RoHS non-compliant and should be replaced in new designs or production runs targeting regulated markets.

Frequently Asked Questions (FAQ)

Q: Can 0467005.NR and 0467005.NRHF be used interchangeably with 0434005.NRP?

A: Yes. Both parts are parametric equivalents with identical current rating (5 A), voltage ratings (32 V AC/DC), package (0603), and response time (fast blow). The primary difference is product status (active vs. obsolete) and compliance certifications. 0467005.NRHF is recommended due to superior inventory availability.

Q: What is the difference between 0467005.NR and 0467005.NRHF?

A: Both parts are electrically and mechanically identical. The primary distinction is packaging format and inventory levels. 0467005.NRHF has significantly higher stock (328,335 pcs vs. 15,300 pcs), making it the preferred choice for production applications.

Q: Can SF-0603F500-2 replace 0434005.NRP in all applications?

A: SF-0603F500-2 matches all mandatory electrical parameters (5 A, 32 V DC, fast blow, 0603 package). However, it differs in breaking capacity (50 A vs. 35 A), operating temperature range (-20°C ~ 105°C vs. -55°C ~ 90°C), and carries only UL approval rather than CSA and UL. Substitution is valid only if the application does not require CSA certification and operates within the -20°C ~ 105°C range.

Q: Why is the melting I²t value different across substitutes?

A: Melting I²t represents the thermal energy required to melt the fuse element. Lower values (0.9 for Littelfuse 467 series, 0.433 for Bourns SF-0603F500-2) indicate faster response to overcurrent conditions. All values remain within acceptable ranges for 5 A fast-blow fuses and do not affect direct substitution eligibility.

Q: Are there packaging considerations when switching from 0434005.NRP to substitutes?

A: The original part packaging is not specified. Substitute parts are available in Tape & Reel (TR) format for Littelfuse parts and Cut Tape (CT) & Digi-Reel® for the Bourns part. Verify that your assembly equipment is compatible with the selected packaging format.

Q: What compliance advantages do the active substitutes offer?

A: All active substitute parts (0467005.NR, 0467005.NRHF, SF-0603F500-2) are ROHS3 compliant and REACH Unaffected, whereas the original 0434005.NRP is RoHS non-compliant. This makes substitutes mandatory for applications subject to environmental regulations in the EU and other regulated markets.