Equivalent & Substitute Parts Reference for BZT52H-A15X

Part Overview

The BZT52H-A15X is a surface mount Zener diode in the SOD-123F package, manufactured by Nexperia USA Inc. It is designed for voltage regulation applications and features a nominal Zener voltage of 15 V, maximum power rating of 375 mW, and a tolerance of ±1%. The product has an active status, is RoHS3 compliant, and conforms to REACH standards. Identifying alternative or equivalent models is necessary to ensure consistent supply, support multiple sourcing, and maintain production continuity in the event of inventory fluctuations.

Key Parameters

Parameter	BZT52H-A15X Value
Voltage - Zener (Nom) (Vz)	15 V
Tolerance	±1%
Power - Max	375 mW
Impedance (Max) (Zzt)	15 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 10.5 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA
Operating Temperature	150°C (TJ)
Mounting Type	Surface Mount
Package / Case	SOD-123F
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Parametric equivalence for Zener diodes in the SOD-123F package is established based on the following key parameters: Zener voltage (15 V), tolerance (±1%), maximum power dissipation (375 mW), maximum impedance (15 Ohms), maximum reverse leakage (50 nA @ 10.5 V), maximum forward voltage (900 mV @ 10 mA), and identical mechanical package (SOD-123F). Parts listed as substitutes must match on all these parameters and maintain the same compliance status (RoHS3, REACH Unaffected, ECCN: EAR99).

Parameter Comparison

Parameter	BZT52H-A15X	BZT52H-A15-QX
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.
Voltage - Zener (Nom) (Vz)	15 V	15 V
Tolerance	±1%	±1%
Power - Max	375 mW	375 mW
Impedance (Max) (Zzt)	15 Ohms	15 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 10.5 V	50 nA @ 10.5 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature	150°C (TJ)	150°C (TJ)
Mounting Type	Surface Mount	Surface Mount
Package / Case	SOD-123F	SOD-123F
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

Both BZT52H-A15X and BZT52H-A15-QX are active products, RoHS3 compliant, and REACH unaffected, with ECCN EAR99 classification. The BZT52H-A15-QX provides AEC-Q101 automotive qualification, offering additional certification within the same parameter set and mechanical outline. Selection between these diodes can be based on product status and compliance certifications, as both fulfill regulatory and supply chain requirements under the provided parameters.

Frequently Asked Questions (FAQ)

Q1: What criteria are required for substituting a Zener diode in the SOD-123F package?
A1: Parameters including Zener voltage, tolerance, maximum power, maximum impedance, maximum reverse leakage current, maximum forward voltage, operating temperature, mounting type, and mechanical package must all match. Compliance with RoHS and REACH standards and identical ECCN classification are also required.

Q2: Is BZT52H-A15-QX directly interchangeable with BZT52H-A15X?
A2: BZT52H-A15-QX matches BZT52H-A15X on all specified electrical, mechanical, and compliance parameters.

Q3: Are there any differences in regulatory compliance between the two parts?
A3: Both BZT52H-A15X and BZT52H-A15-QX are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99.

Q4: Is the package identical for both part numbers?
A4: Both parts use the SOD-123F surface mount package and are intended for SOD-123F compatible PCBs.

Q5: Which part should be selected for automotive applications?
A5: BZT52H-A15-QX carries an AEC-Q101 qualification, as listed in the provided parameters.

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