Equivalent & Substitute Parts for PRF18AS471QS5RB

Part Overview

The Murata Electronics PRF18AS471QS5RB is an active PTC thermistor temperature sensor in the POSISTOR® PRF18/21 series, rated at 470 Ohms with ±50% tolerance in a 0603 (1608 Metric) surface mount package. This component is designed for thermal protection and temperature sensing applications requiring surface mount integration. Substitute parts are necessary when primary inventory is unavailable or when alternative manufacturer specifications better align with specific application temperature ranges and packaging requirements.

Substiute Parts

PRF18AS471QS5RB

Murata ElectronicsIn Stock: 1241PRF18AS471QS5RB Datasheet

Current PartRFQ

B59601A0075A062

EPCOS - TDK ElectronicsIn Stock: 5072B59601A0075A062 Datasheet

MFR RecommendedRFQ

B59601A0085A062

EPCOS - TDK ElectronicsIn Stock: 16167B59601A0085A062 Datasheet

MFR RecommendedRFQ

B59601A0095A062

EPCOS - TDK ElectronicsIn Stock: 21172B59601A0095A062 Datasheet

MFR RecommendedRFQ

B59601A0105A062

EPCOS - TDK ElectronicsIn Stock: 6973B59601A0105A062 Datasheet

MFR RecommendedRFQ

B59601A0115A062

EPCOS - TDK ElectronicsIn Stock: 9699B59601A0115A062 Datasheet

MFR RecommendedRFQ

B59601A0125A062

EPCOS - TDK ElectronicsIn Stock: 3917B59601A0125A062 Datasheet

MFR RecommendedRFQ

B59601A0135A062

EPCOS - TDK ElectronicsIn Stock: 846B59601A0135A062 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PRF18AS471QS5RB is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 470 Ohms
• Resistance tolerance: ±50%
• Package / Case: 0603 (1608 Metric)
• Mounting type: Surface Mount
• Category: Temperature Sensors (PTC Thermistor)

Variable Parameters Allowing Substitution:

• Operating temperature range (substitute range must encompass or be compatible with application requirements)
• Packaging format (Tape & Reel or Cut Tape variants)
• Manufacturer (different manufacturers with equivalent specifications)

The EPCOS - TDK Electronics B59601 series parts listed below meet all mandatory matching parameters. Differences in operating temperature ranges (-40°C ~ 125°C for B59601 variants versus -20°C ~ 160°C for PRF18AS471QS5RB) represent the primary technical distinction and must be evaluated against specific application thermal requirements.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring regulatory alignment with the original PRF18AS471QS5RB component. The B59601 series from EPCOS - TDK Electronics provides functionally equivalent PTC thermistor performance with identical resistance specifications and package geometry.

The primary technical consideration is the operating temperature range differential. The PRF18AS471QS5RB operates across -20°C to 160°C, while all B59601 variants operate across -40°C to 125°C. Applications requiring operation above 125°C or below -40°C must retain the original Murata part. Applications operating within the -20°C to 125°C window are compatible with either manufacturer's components.

Packaging format variations exist only for B59601A0105A062, which is supplied in Cut Tape (CT) & Digi-Reel® format rather than standard Tape & Reel. This distinction affects procurement and assembly processes but does not alter electrical or thermal performance.

Frequently Asked Questions (FAQ)

Q: Can B59601 series parts directly replace PRF18AS471QS5RB in all applications?

A: Direct replacement is valid only for applications operating within the -20°C to 125°C temperature window. Applications requiring operation above 125°C must use the original PRF18AS471QS5RB due to its extended upper temperature limit of 160°C.

Q: What is the significance of the different packaging formats (Tape & Reel versus Cut Tape)?

A: Tape & Reel (TR) packaging is standard for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® format (B59601A0105A062) is suitable for lower-volume or mixed-component pick-and-place operations. Both formats contain identical components; the difference is in delivery and handling method.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both the original PRF18AS471QS5RB and all B59601 series substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), meeting current environmental and regulatory requirements.

Q: How do I determine which substitute part to select based on inventory availability?

A: All listed B59601 variants are electrically and mechanically equivalent within the specified operating temperature range. Selection can be based on inventory availability and packaging format requirements. B59601A0095A062 currently has the highest inventory (21140 Pcs), followed by B59601A0085A062 (16138 Pcs).

Q: Is the ±50% resistance tolerance maintained across all substitute parts?

A: Yes. All substitute parts maintain the identical ±50% resistance tolerance at 25°C, ensuring consistent thermal response characteristics across the 470 Ohm nominal value.