BZT52C24T-TP Equivalent & Substitute Parts

Part Overview

The BZT52C24T-TP is a 24 V Zener diode rated at 100 mW maximum power dissipation, manufactured by Micro Commercial Co in SOD-523 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 in electronic systems.

Substitute parts become necessary when the primary part number experiences extended lead times, inventory constraints, or when design requirements permit higher power ratings or improved electrical characteristics. The parts listed below maintain the core 24 V nominal Zener voltage and ±6% tolerance specification while offering alternative power ratings, impedance characteristics, and manufacturer options.

Substiute Parts

BZT52C24T-TP

Micro Commercial CoIn Stock: 1117BZT52C24T-TP Datasheet

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BZT52C24T-7

Diodes IncorporatedIn Stock: 3459BZT52C24T-7 Datasheet

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BZX585-B24,115

Nexperia USA Inc.In Stock: 3830BZX585-B24,115 Datasheet

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BZX585-C24,115

NXP SemiconductorsIn Stock: 252288BZX585-C24,115 Datasheet

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BZX84J-B24,115

Nexperia USA Inc.In Stock: 263947BZX84J-B24,115 Datasheet

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MM5Z24VT1G

onsemiIn Stock: 125327MM5Z24VT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BZT52C24T-TP is determined by the following criteria:

Primary Matching Parameters:

• Voltage - Zener (Nom): 24 V (exact match required)
• Operating Temperature Range: -65°C to 150°C (minimum requirement)
• Mounting Type: Surface Mount (required for PCB compatibility)
• RoHS3 Compliance: Required for regulatory alignment
• Moisture Sensitivity Level: 1 (Unlimited) or equivalent

Secondary Compatibility Parameters:

• Tolerance: ±6% or tighter (±2%, ±5% are acceptable)
• Power - Max: Equal to or greater than 100 mW (higher ratings are acceptable)
• Impedance (Max): 70 Ohms or lower (lower impedance is acceptable)
• Current - Reverse Leakage @ Vr: 100 nA or lower (lower leakage is acceptable)
• Voltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA or lower (lower forward voltage is acceptable)

Package Considerations:

• SOD-523 package (SC-79) is the primary form factor
• SOD-323F package (SC-90) is acceptable as a higher-power alternative with different footprint

All substitute parts listed meet or exceed the electrical performance of the main part while maintaining the 24 V Zener voltage specification and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

BZT52C24T-7 (Diodes Incorporated) This part is a direct functional equivalent with identical tolerance (±6%) and forward voltage characteristics. The 300 mW power rating provides a 3× margin over the original specification. Suitable for applications where higher thermal dissipation capacity is beneficial without design modification. Maintains SOD-523 package compatibility.

BZX585-B24,115 (Nexperia USA Inc.) This part offers improved tolerance (±2% versus ±6%) and lower reverse leakage current (50 nA versus 100 nA). Rated for 300 mW power dissipation. Carries AEC-Q100 automotive qualification, indicating enhanced reliability screening. Maintains SOD-523 package compatibility. Forward voltage specification differs (1.1 V @ 100 mA versus 900 mV @ 10 mA), reflecting different measurement conditions.

BZX585-C24,115 (NXP Semiconductors) This part provides 300 mW power rating with ±5% tolerance and 50 nA reverse leakage. Maintains SOD-523 package compatibility. Offers high inventory availability (252,265 pcs). Forward voltage specification differs from the main part due to different measurement conditions.

BZX84J-B24,115 (Nexperia USA Inc.) This part represents a higher-power alternative with 550 mW rating and improved impedance (30 Ω versus 70 Ω). Carries AEC-Q101 automotive qualification. Uses SOD-323F package (SC-90), which requires PCB footprint modification. Tolerance is ±2%. Suitable for applications requiring higher power dissipation and improved impedance characteristics.

MM5Z24VT1G (onsemi) This part offers 500 mW power rating with ±6% tolerance matching the original specification. Maintains SOD-523 package compatibility and identical forward voltage characteristics (900 mV @ 10 mA). Lower reverse leakage current (50 nA versus 100 nA). Provides significant inventory availability (125,300 pcs).

All substitute parts maintain the -65°C to 150°C operating temperature range and RoHS3 compliance status of the original part.

Frequently Asked Questions (FAQ)

Q: Can BZT52C24T-7 be used as a direct replacement for BZT52C24T-TP?

A: Yes. Both parts share identical Zener voltage (24 V), tolerance (±6%), forward voltage (900 mV @ 10 mA), impedance (70 Ω), and operating temperature range (-65°C to 150°C). The BZT52C24T-7 has a higher power rating (300 mW versus 100 mW), which is acceptable for applications designed for the lower-power part. Both use SOD-523 packaging with identical footprints.

Q: What is the difference between SOD-523 and SOD-323F packages?

A: SOD-523 (SC-79) and SOD-323F (SC-90) are different surface mount package form factors with different physical dimensions and PCB footprints. The BZX84J-B24,115 uses SOD-323F and cannot be used as a direct drop-in replacement without PCB redesign. However, it offers higher power dissipation (550 mW) and lower impedance (30 Ω).

Q: Why do some substitute parts have different forward voltage specifications?

A: Forward voltage is measured under specific conditions. The main part specifies Vf at 10 mA, while some substitutes specify Vf at 100 mA. These represent different operating points on the diode's forward characteristic curve. Both specifications are valid; the difference reflects measurement methodology rather than incompatibility.

Q: Are the automotive-qualified parts (BZX585-B24,115 and BZX84J-B24,115) required for non-automotive applications?

A: No. Automotive qualification (AEC-Q100, AEC-Q101) indicates enhanced reliability screening and is not required for non-automotive applications. These parts are acceptable for general-purpose use but are not mandatory unless automotive-grade components are specified.

Q: Can I use a higher-power Zener diode in place of the 100 mW BZT52C24T-TP?

A: Yes, provided all other electrical parameters match or exceed the original specification. Higher power ratings (300 mW, 500 mW, 550 mW) are acceptable because they provide additional thermal margin. The circuit will function identically; the higher-power part simply dissipates heat more efficiently.

Q: What does ±6% tolerance mean for the 24 V Zener voltage?

A: ±6% tolerance on a 24 V Zener diode means the actual Zener voltage will fall within the range of 22.56 V to 25.44 V. Tighter tolerances (±2%, ±5%) represent narrower voltage ranges and are acceptable substitutes for applications originally designed for ±6%.

Q: Is reverse leakage current important for substitution?

A: Reverse leakage current (Ir) becomes important in high-impedance circuits or precision applications. Lower leakage current (50 nA versus 100 nA) is always acceptable and represents improved performance. The original specification of 100 nA @ 16.8 V is the maximum allowable; lower values do not cause incompatibility.

Q: Can I substitute BZX585-B24,115 or BZX585-C24,115 interchangeably?

A: Yes, both parts are functionally equivalent for the BZT52C24T-TP application. BZX585-B24,115 has tighter tolerance (±2% versus ±5%) and carries automotive qualification. BZX585-C24,115 has higher inventory availability. Both maintain SOD-523 packaging and 300 mW power rating. Selection depends on tolerance requirements and availability.

Q: What does RoHS3 compliance mean?

A: RoHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates the component does not contain restricted substances including lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers. All listed parts are RoHS3 compliant, ensuring regulatory alignment for EU and equivalent markets.