Equivalent & Substitute Parts for 0ZCE0010FF2G

Part Overview

The 0ZCE0010FF2G is a Polymeric PTC Resettable Fuse manufactured by Bel Fuse Inc., rated for 15V maximum voltage and 100 mA hold current in a 0805 (2012 Metric) surface mount package. This part is classified as Obsolete, making substitute components necessary for new designs and ongoing production requirements. The 0ZCE series has been superseded by active alternatives that maintain electrical and mechanical compatibility while offering improved availability and compliance certifications.

Key Parameters

Parameter	Value
Voltage - Max	15V
Current - Hold (Ih) (Max)	100 mA
Current - Trip (It)	300 mA
Mounting Type	Surface Mount
Package / Case	0805 (2012 Metric)
Operating Temperature	-40°C ~ 85°C
Type	Polymeric
Approval Agency	cURus, TUV

Substitute Part Grouping Explanation

Substitution eligibility for the 0ZCE0010FF2G is determined by the following critical parameters:

Primary Compatibility Criteria:

Voltage rating: 15V maximum (equal or higher acceptable)
Current hold rating: 100 mA (equal or higher acceptable)
Current trip rating: 300 mA (equal or higher acceptable)
Package: 0805 (2012 Metric) surface mount
Type: Polymeric PTC resettable fuse
Operating temperature range: -40°C ~ 85°C minimum

Direct Substitutes (Full Electrical & Mechanical Compatibility):

0ZCK0010FF2G (Bel Fuse Inc.) — Same electrical ratings, active product status, concave package variant
0805L010YR (Littelfuse Inc.) — Matching voltage and current ratings, active status, improved MSL rating
MF-PSMF010X-2 (Bourns Inc.) — Matching voltage and current ratings, active status, Multifuse series

Similar Substitutes (Acceptable with Parameter Variance):

PICOSMDC010S-2 (Littelfuse Inc.) — Matching core ratings, slightly higher post-trip resistance (11 Ohms vs 6 Ohms max)
PICOSMDC012S-2 (Littelfuse Inc.) — 120 mA hold current (20% higher than original), acceptable for applications with margin

Non-Compatible:

0805L035YR (Littelfuse Inc.) — 6V maximum voltage and 350 mA hold current; fundamentally different electrical specification

Parameter Comparison

Parameter	0ZCE0010FF2G	0ZCK0010FF2G	0805L010YR	MF-PSMF010X-2	PICOSMDC010S-2	PICOSMDC012S-2
Manufacturer	Bel Fuse Inc.	Bel Fuse Inc.	Littelfuse Inc.	Bourns Inc.	Littelfuse Inc.	Littelfuse Inc.
Voltage - Max	15V	15V	15V	15V	15V	15V
Current - Hold (Ih) (Max)	100 mA	100 mA	100 mA	100 mA	100 mA	120 mA
Current - Trip (It)	300 mA	300 mA	300 mA	300 mA	300 mA	300 mA
Resistance - Initial (Ri) (Min)	700 mOhms	700 mOhms	1 Ohms	1 Ohms	1.5 Ohms	1.5 Ohms
Resistance - Post Trip (R1) (Max)	6 Ohms	6 Ohms	6 Ohms	7.5 Ohms	11 Ohms	9 Ohms
Time to Trip	1.5 s	1.5 s	1.5 s	1.5 s	600 ms	100 ms
Package / Case	0805 (2012 Metric)	0805 (2012 Metric), Concave	0805 (2012 Metric), Concave	0805 (2012 Metric), Concave	0805 (2012 Metric), Concave	0805 (2012 Metric), Concave
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2A (4 Weeks)	2A (4 Weeks)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Approval Agency	cURus, TUV	cURus, TUV	cURus, TUV	cURus, TUV	CSA, TUV, UL	CSA, TUV, UL

Engineering Selection Recommendations

Recommended Primary Substitutes:

0ZCK0010FF2G (Bel Fuse Inc.) is the preferred direct replacement. It maintains identical electrical specifications and thermal characteristics while offering active product status and improved supply availability. The concave package variant is mechanically compatible with standard 0805 footprints.

0805L010YR (Littelfuse Inc.) provides equivalent electrical performance with superior moisture sensitivity rating (MSL 1 vs 2A), reducing handling and storage constraints. ROHS3 compliance and unlimited MSL make this suitable for long-term inventory management.

MF-PSMF010X-2 (Bourns Inc.) offers full electrical compatibility with active status and ROHS3 compliance. Post-trip resistance tolerance is slightly higher (7.5 Ohms max vs 6 Ohms), acceptable for applications with adequate design margin.

Acceptable Alternatives with Design Considerations:

PICOSMDC010S-2 (Littelfuse Inc.) matches core electrical ratings but exhibits faster trip time (600 ms vs 1.5 s) and higher post-trip resistance (11 Ohms max). Use only where faster response is acceptable and circuit design accommodates higher fault impedance.

PICOSMDC012S-2 (Littelfuse Inc.) provides 120 mA hold current, representing a 20% increase over the original specification. Suitable for applications where the original 100 mA rating included design margin. Fastest trip time (100 ms) requires circuit validation.

Not Recommended:

0805L035YR is not a substitute. The 6V maximum voltage and 350 mA hold current represent fundamentally different electrical specifications unsuitable for 15V, 100 mA applications.

Frequently Asked Questions (FAQ)

Q: Can I use 0ZCK0010FF2G as a direct replacement for 0ZCE0010FF2G?

A: Yes. Both parts share identical electrical ratings (15V, 100 mA hold, 300 mA trip), operating temperature range, and 0805 package footprint. The 0ZCK0010FF2G is the active successor with improved availability and compliance certifications.

Q: What is the difference between the concave and standard 0805 package variants?

A: Concave variants feature a recessed top surface. Both are mechanically compatible with standard 0805 (2012 Metric) PCB footprints. Concave geometry may affect solder joint formation and visual inspection procedures; verify with your assembly process documentation.

Q: Why do some substitutes have higher post-trip resistance values?

A: Post-trip resistance (R1) represents the fuse impedance after thermal activation. Higher values (7.5 Ohms, 9 Ohms, 11 Ohms) increase fault circuit impedance. Verify that your circuit design accommodates these variations without exceeding maximum allowable fault voltage or current limits.

Q: Can PICOSMDC012S-2 replace 0ZCE0010FF2G if my circuit has design margin?

A: PICOSMDC012S-2 has 120 mA hold current versus the original 100 mA specification. Use only if your circuit design includes sufficient margin above 120 mA to prevent nuisance trips. The 100 ms trip time is significantly faster than the original 1.5 s; verify this does not conflict with circuit protection strategy.

Q: What does MSL 1 (Unlimited) mean compared to MSL 2A (4 Weeks)?

A: MSL 1 (Unlimited) allows indefinite storage without moisture absorption concerns. MSL 2A (4 Weeks) requires reflow processing within 4 weeks of package opening. MSL 1 parts reduce supply chain constraints and storage management complexity.

Q: Are all substitutes ROHS3 compliant?

A: All active substitutes listed (0ZCK0010FF2G, 0805L010YR, MF-PSMF010X-2, PICOSMDC010S-2, PICOSMDC012S-2) are ROHS3 compliant. The original 0ZCE0010FF2G does not specify RoHS status due to its obsolete classification.

Q: Which substitute has the fastest response time?

A: PICOSMDC012S-2 has the fastest trip time at 100 ms. PICOSMDC010S-2 follows at 600 ms. All others (0ZCE0010FF2G, 0ZCK0010FF2G, 0805L010YR, MF-PSMF010X-2) share 1.5 s trip time. Faster response requires circuit validation to ensure compatibility with system protection requirements.

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