Equivalent & Substitute Parts for MF-PSHT010X-2

Part Overview

The MF-PSHT010X-2 is a Polymeric PTC Resettable Fuse manufactured by Bourns Inc., rated for 16V maximum voltage with 100 mA hold current. This component is designed for surface mount applications in the 0805 (2012 Metric) package format with a concave profile. The part is currently listed as obsolete, making identification of suitable equivalent components essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Voltage - Max	16V
Current - Hold (Ih) (Max)	100 mA
Current - Trip (It)	600 mA
Mounting Type	Surface Mount
Package / Case	0805 (2012 Metric), Concave
Operating Temperature	-40°C ~ 125°C
Ratings	AEC-Q200
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for PTC resettable fuses is determined by strict alignment of electrical and mechanical parameters. The primary criteria are:

Voltage Rating: Maximum voltage must equal or exceed 16V
Current - Hold (Ih): Must match 100 mA specification
Package Format: Must be 0805 (2012 Metric) with concave profile for PCB compatibility
Mounting Type: Surface mount configuration required
Operating Temperature Range: Must support -40°C to 125°C
Compliance: AEC-Q200 rating and ROHS3 compliance required

The Current - Trip (It) parameter may vary within acceptable ranges for the same hold current class, as this represents the threshold at which the fuse transitions to high resistance state. Similarly, post-trip resistance values may differ based on manufacturer design while maintaining functional equivalence.

Parameter Comparison

Parameter	MF-PSHT010X-2 (Bourns)	MF-PSHT010KX-2 (Bourns)	PTSAHT080516V010 (Eaton)
Voltage - Max	16V	16V	16V
Current - Hold (Ih) (Max)	100 mA	100 mA	100 mA
Current - Trip (It)	600 mA	500 mA	600 mA
Current - Max	40 A	40 A	40 A
Time to Trip	1.5 s	1.5 s	1.5 s
Resistance - Initial (Ri) (Min)	1 Ohms	1 Ohms	1 Ohms
Resistance - Post Trip (R1) (Max)	12 Ohms	7.5 Ohms	10 Ohms
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Ratings	AEC-Q200	AEC-Q200	AEC-Q200
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	0805 (2012 Metric), Concave	0805 (2012 Metric), Concave	0805 (2012 Metric), Concave
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

MF-PSHT010KX-2 (Bourns Inc., Active Status): This is the manufacturer-recommended substitute from Bourns. It maintains identical electrical specifications for voltage, hold current, and operating temperature range. The primary difference is the Current - Trip specification of 500 mA versus 600 mA on the original part, and a lower post-trip resistance of 7.5 Ohms compared to 12 Ohms. Both parts carry AEC-Q200 certification and ROHS3 compliance. This part is currently in active production status with available inventory.

PTSAHT080516V010 (Eaton - Electronics Division, Active Status): This alternative from Eaton meets all critical electrical parameters including 16V voltage rating, 100 mA hold current, and identical operating temperature range. The Current - Trip specification matches the original part at 600 mA. Post-trip resistance is specified at 10 Ohms. The component carries AEC-Q200 certification, ROHS3 compliance, and UL approval. Physical dimensions show minor variation (0.089" L x 0.059" W versus 0.085" L x 0.053" W), remaining within the 0805 (2012 Metric) package classification. This part is in active production with available inventory.

Frequently Asked Questions (FAQ)

Q: Can MF-PSHT010KX-2 be used as a direct replacement for MF-PSHT010X-2?

A: Yes. Both parts share identical voltage rating (16V), hold current (100 mA), operating temperature range (-40°C to 125°C), package format (0805 Concave), and compliance certifications (AEC-Q200, ROHS3). The Current - Trip specification differs (500 mA vs. 600 mA), which represents the threshold at which the fuse transitions to protective mode. This variation is within acceptable design parameters for the same hold current class.

Q: What is the difference between Current - Hold (Ih) and Current - Trip (It)?

A: Current - Hold (Ih) is the maximum continuous current the fuse can carry without tripping. Current - Trip (It) is the threshold current at which the fuse transitions to high resistance state to provide circuit protection. All substitute parts maintain the 100 mA hold current specification.

Q: Are there physical compatibility concerns with PTSAHT080516V010?

A: The PTSAHT080516V010 has slightly larger physical dimensions (0.089" L x 0.059" W) compared to the original part (0.085" L x 0.053" W). Both remain classified as 0805 (2012 Metric) package format with concave profile. PCB layout compatibility should be verified for designs with tight component spacing.

Q: Why is the original MF-PSHT010X-2 listed as obsolete?

A: Product obsolescence is determined by the manufacturer. The active equivalent MF-PSHT010KX-2 from Bourns provides continued design support with identical functional specifications.

Q: Do all substitute parts meet automotive qualification requirements?

A: Yes. All listed parts carry AEC-Q200 certification, indicating compliance with automotive-grade reliability standards.

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