Equivalent & Substitute Parts for PRF18AS471QB5RB

Part Overview

The Murata Electronics PRF18AS471QB5RB is an active PTC thermistor 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 temperature sensing applications requiring reliable thermal protection across industrial temperature ranges. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and operational parameters to ensure seamless integration in circuit designs.

Key Parameters

Parameter	Value
Resistance @ 25°C	470 Ohms
Resistance Tolerance	±50%
Operating Temperature Range	-20°C ~ 120°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the PRF18AS471QB5RB is determined by the following critical parameters:

Resistance Value: 470 Ohms at 25°C
Resistance Tolerance: ±50%
Package / Case: 0603 (1608 Metric) surface mount
Mounting Type: Surface mount technology
Moisture Sensitivity Level: MSL 1 (Unlimited)
RoHS Compliance: ROHS3 Compliant

Substitute parts must match all electrical specifications and physical package dimensions. Operating temperature range may extend beyond the original specification without affecting substitution validity. Packaging format (Tape & Reel, Cut Tape, or Digi-Reel) does not affect electrical or mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Resistance @ 25°C	Tolerance	Operating Temp Range	Package	MSL	RoHS	Inventory (Pcs)
PRF18AS471QB5RB	Murata Electronics	POSISTOR® PRF18/21	470 Ohms	±50%	-20°C ~ 120°C	0603 (1608 Metric)	1	ROHS3	6900
B59601A0075A062	EPCOS - TDK Electronics	B59601	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	4996
B59601A0105A062	EPCOS - TDK Electronics	B59601	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	6913
B59601A0115A062	EPCOS - TDK Electronics	B59601	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	9652
B59601A0125A062	EPCOS - TDK Electronics	B59601	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	3907
B59641A0085A062	EPCOS - TDK Electronics	B59641	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	4648
B59641A0095A062	EPCOS - TDK Electronics	B59641	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	7094
B59641A0105A062	EPCOS - TDK Electronics	B59641	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	44172
B59641A0115A062	EPCOS - TDK Electronics	B59641	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	52721
B59641A0125A062	EPCOS - TDK Electronics	B59641	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	8572
B59641A0135A062	EPCOS - TDK Electronics	B59641	470 Ohms	±50%	-40°C ~ 125°C	0603 (1608 Metric)	1	ROHS3	1500

Engineering Selection Recommendations

All listed substitute parts meet the electrical and mechanical requirements for direct replacement of the PRF18AS471QB5RB. Selection criteria are based on product status, compliance certifications, and availability:

Standard Industrial Grade Substitutes (B59601 Series): The B59601 series from EPCOS - TDK Electronics provides equivalent functionality with extended operating temperature range (-40°C ~ 125°C). All variants maintain ROHS3 compliance and MSL 1 rating. These parts are suitable for general industrial applications.

Automotive Grade Substitutes (B59641 Series): The B59641 series offers automotive-grade qualification with AEC-Q200 certification. These parts are rated for -40°C ~ 125°C operation and are appropriate for automotive and high-reliability applications. The B59641A0115A062 variant offers the highest inventory availability (52,721 units).

All substitute parts are active products with confirmed stock availability and identical package specifications (0603 / 1608 Metric surface mount).

Frequently Asked Questions (FAQ)

Q: Can B59601 series parts replace PRF18AS471QB5RB in all applications?

A: Yes. The B59601 series matches all critical electrical parameters (470 Ohms, ±50% tolerance) and physical specifications (0603 package, surface mount). The extended operating temperature range (-40°C ~ 125°C versus -20°C ~ 120°C) provides additional margin without affecting compatibility.

Q: What is the difference between B59601 and B59641 series substitutes?

A: The B59641 series includes automotive-grade qualification and AEC-Q200 certification, making it suitable for automotive and mission-critical applications. Both series share identical electrical specifications and package dimensions. Selection depends on application requirements and qualification standards.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect substitution?

A: No. Packaging format affects only handling and assembly logistics. Electrical and mechanical compatibility remain unchanged regardless of whether parts are supplied in Tape & Reel (TR), Cut Tape (CT), or Digi-Reel format.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original PRF18AS471QB5RB specification.

Q: Which substitute part offers the best inventory availability?

A: The B59641A0115A062 provides the highest stock level at 52,721 units, followed by B59641A0105A062 with 44,172 units.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message