BZT52C3V3LP-TP Equivalent & Substitute Parts

Part Overview

The BZT52C3V3LP-TP is a Zener diode rated at 3.3 V nominal voltage with 100 mW maximum power dissipation in a surface mount SOD-882 package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status and limited current inventory availability, identifying equivalent substitute parts is necessary to ensure design continuity and procurement reliability for new production runs and long-term supply chain planning.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3.3	V
Tolerance	±6.06%	%
Power - Max	100	mW
Impedance (Max)	95	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOD-882	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BZT52C3V3LP-TP is determined by the following critical parameters:

Electrical Compatibility Criteria:

Zener voltage nominal value: 3.3 V
Impedance (Max): 95 Ohms
Current - Reverse Leakage @ Vr: 5 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA
Operating Temperature Range: -65°C to 150°C

Mechanical & Environmental Criteria:

Mounting Type: Surface Mount
Package / Case: SOD-882
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

The BZX884-C3V3,315 meets all electrical parameters and environmental compliance requirements. While this substitute exhibits higher maximum power dissipation (250 mW versus 100 mW), this represents a design margin improvement and does not compromise compatibility. The substitute maintains identical zener voltage, impedance, reverse leakage current, forward voltage characteristics, and operating temperature range.

Parameter Comparison

Parameter	BZT52C3V3LP-TP (Main)	BZX884-C3V3,315 (Substitute)	Match Status
Voltage - Zener (Nom)	3.3 V	3.3 V	Identical
Tolerance	±6.06%	±5%	Substitute Tighter
Power - Max	100 mW	250 mW	Substitute Higher
Impedance (Max)	95 Ohms	95 Ohms	Identical
Current - Reverse Leakage @ Vr	5 µA @ 1 V	5 µA @ 1 V	Identical
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	Identical
Operating Temperature Range	-65°C to 150°C	-65°C to 150°C	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	SOD-882	SOD-882	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Identical

Engineering Selection Recommendations

The BZX884-C3V3,315 is a direct functional substitute for the BZT52C3V3LP-TP based on the following factors:

Product Status: The BZT52C3V3LP-TP is classified as obsolete, whereas the BZX884-C3V3,315 is active. This status difference ensures long-term availability and supply chain stability for the substitute part.

Compliance & Certification: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. The substitute part carries AEC-Q100 automotive qualification, providing additional quality assurance for applications requiring automotive-grade components.

Electrical Performance: All critical electrical parameters—zener voltage, impedance, reverse leakage current, and forward voltage—are identical between the main part and substitute. The substitute's higher power rating (250 mW) provides additional thermal margin without affecting circuit operation.

Physical Compatibility: Both parts use identical surface mount packaging (SOD-882) and mounting type, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the BZX884-C3V3,315 be used as a direct replacement for the BZT52C3V3LP-TP?

A: Yes. The substitute part maintains identical zener voltage (3.3 V), impedance (95 Ohms), reverse leakage current (5 µA @ 1 V), forward voltage (900 mV @ 10 mA), and operating temperature range (-65°C to 150°C). Both parts use the same SOD-882 surface mount package.

Q: What is the difference in power dissipation between these parts?

A: The BZT52C3V3LP-TP is rated at 100 mW maximum power dissipation, while the BZX884-C3V3,315 is rated at 250 mW. The higher rating on the substitute part provides additional thermal margin and does not negatively impact circuit compatibility.

Q: Are there any tolerance differences between the main part and substitute?

A: The BZT52C3V3LP-TP has a tolerance of ±6.06%, while the BZX884-C3V3,315 has a tighter tolerance of ±5%. The substitute's tighter tolerance represents an improvement in voltage accuracy.

Q: Does the substitute part have automotive qualification?

A: Yes. The BZX884-C3V3,315 carries AEC-Q100 automotive qualification, making it suitable for automotive applications. The main part does not list this qualification.

Q: Are both parts RoHS compliant?

A: Yes. Both the BZT52C3V3LP-TP and BZX884-C3V3,315 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Why is the main part listed as obsolete?

A: The BZT52C3V3LP-TP is classified as obsolete by the manufacturer. The BZX884-C3V3,315 is an active product with significantly higher inventory availability (22,833 pcs in stock versus 983 pcs for the main part), ensuring reliable long-term supply.

Q: Can I use the substitute part in existing designs without PCB modifications?

A: Yes. Both parts use identical SOD-882 surface mount packaging and mounting type, enabling direct substitution without PCB layout changes.

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