CZRT55C36-G Zener Diode 36V 350mW Equivalent & Substitute Parts

Part Overview

The CZRT55C36-G is a 36V 350mW Zener diode manufactured by Comchip Technology in SOT-23-3 surface mount packaging. This component is classified as Active product status and is RoHS3 compliant. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage circuits. Equivalent and substitute parts may be required due to inventory availability, lead time constraints, or design optimization for specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

CZRT55C36-G

Comchip TechnologyIn Stock: 861CZRT55C36-G Datasheet

Current PartRFQ

BZX84B36-7-F

Diodes IncorporatedIn Stock: 1597BZX84B36-7-F Datasheet

MFR RecommendedRFQ

BZX84B36Q-7-F

Diodes IncorporatedIn Stock: 907BZX84B36Q-7-F Datasheet

MFR RecommendedRFQ

BZX84C36-7-F

Diodes IncorporatedIn Stock: 24457BZX84C36-7-F Datasheet

MFR RecommendedRFQ

MMBZ5258B-7-F

Diodes IncorporatedIn Stock: 39201MMBZ5258B-7-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CZRT55C36-G is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage (Vz) must equal 36V nominal
• Package must be SOT-23-3 (TO-236-3, SC-59)
• Mounting type must be Surface Mount
• Operating temperature range must encompass -65°C to 150°C
• RoHS3 compliance required

Secondary Compatibility Parameters:

• Power dissipation rating of 300mW or higher
• Tolerance of ±6% or tighter
• Impedance (Zzt) of 90 Ohms or lower
• Reverse leakage current of 100nA or lower at specified voltage
• Forward voltage of 900mV or lower at 10mA

All four substitute parts listed meet these criteria and are therefore electrically and mechanically interchangeable with the CZRT55C36-G in applications requiring a 36V Zener diode in SOT-23-3 packaging.

Parameter Comparison

Engineering Selection Recommendations

BZX84B36-7-F (Diodes Incorporated): This substitute offers tighter tolerance (±2%) compared to the main part (±6%), with identical impedance and leakage specifications. Power rating is 300mW, which is lower than the main part's 350mW. This part is suitable for applications where voltage regulation precision is prioritized and power dissipation does not exceed 300mW. RoHS3 compliant and Active product status.

BZX84B36Q-7-F (Diodes Incorporated): This variant is qualified to AEC-Q101 automotive standard with ±2% tolerance and 300mW power rating. Identical electrical parameters to BZX84B36-7-F with automotive-grade qualification. Suitable for automotive and high-reliability applications. RoHS3 compliant and Active product status.

BZX84C36-7-F (Diodes Incorporated): This substitute matches the main part's ±6% tolerance specification with 300mW power rating and 90Ω impedance. Highest inventory availability (24400 Pcs) among all substitutes. Suitable for general-purpose applications where tolerance and power requirements align with the main part. RoHS3 compliant and Active product status.

MMBZ5258B-7-F (Diodes Incorporated): This substitute provides 350mW power rating matching the main part, with ±5% tolerance and superior impedance specification (70Ω vs. 90Ω). Reverse leakage measured at 27V instead of 25.2V. Highest inventory availability (39100 Pcs). Suitable for applications requiring maximum power dissipation capability and lower impedance. RoHS3 compliant and Active product status.

Frequently Asked Questions (FAQ)

Q: Can BZX84B36-7-F replace CZRT55C36-G in all applications?

A: BZX84B36-7-F is electrically compatible with CZRT55C36-G for applications where power dissipation does not exceed 300mW. The main part is rated for 350mW. Both parts share identical 36V nominal voltage, SOT-23-3 packaging, operating temperature range, and impedance specifications. Tolerance is tighter on the substitute (±2% vs. ±6%).

Q: What is the difference between BZX84B36-7-F and BZX84B36Q-7-F?

A: Both parts have identical electrical specifications (36V, 300mW, ±2% tolerance, 90Ω impedance). The primary difference is that BZX84B36Q-7-F carries AEC-Q101 automotive qualification, making it suitable for automotive applications requiring automotive-grade components. Both are RoHS3 compliant and in SOT-23-3 packaging.

Q: Why does MMBZ5258B-7-F have lower impedance (70Ω) than other substitutes?

A: MMBZ5258B-7-F is a different product line within Diodes Incorporated's Zener portfolio. The 70Ω impedance specification is a characteristic of this particular device series. Lower impedance generally provides better voltage regulation performance. This part is fully compatible with CZRT55C36-G in SOT-23-3 packaging and meets all primary substitution criteria.

Q: Is BZX84C36-7-F the best choice for general inventory stocking?

A: BZX84C36-7-F offers the highest inventory availability (24400 Pcs) and matches the main part's ±6% tolerance specification. It is suitable for general-purpose applications and provides good supply chain availability. Selection should be based on specific application power requirements and tolerance needs rather than inventory levels alone.

Q: Can these substitutes be used interchangeably on the same PCB without design changes?

A: Yes. All substitute parts use identical SOT-23-3 packaging and Surface Mount mounting type. PCB footprints and assembly processes remain unchanged. Electrical parameters are compatible within the specified ranges. No design modifications are required for mechanical or electrical integration.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99. All carry Moisture Sensitivity Level 1 (Unlimited). BZX84B36Q-7-F additionally carries AEC-Q101 automotive qualification. All parts are Active product status.