BZX84C15 Equivalent & Substitute Parts

Part Overview

The BZX84C15 is a surface mount Zener diode rated at 15 V nominal with 300 mW maximum power dissipation. Manufactured by Taiwan Semiconductor Corporation, this component operates across the temperature range of -65°C to 150°C and is packaged in SOT-23 form factor. The part maintains Active product status and complies with ROHS3 and REACH standards.

Substitute parts become necessary when the primary part experiences inventory constraints, when specific packaging formats are required for production workflows, or when enhanced tolerance specifications or automotive-grade qualifications are required for particular applications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	15	V
Power - Max	300	mW
Tolerance	±6%	-
Impedance (Max)	30	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 10.5 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-65 to 150	°C (TJ)
Mounting Type	Surface Mount	-
Package / Case	TO-236-3, SC-59, SOT-23-3	-

Substitute Part Grouping Explanation

Substitution of the BZX84C15 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

Voltage - Zener (Nom): 15 V
Power - Max: 300 mW
Impedance (Max): 30 Ohms
Current - Reverse Leakage @ Vr: 100 nA @ 10.5 V
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA
Operating Temperature Range: -65°C to 150°C
Package / Case: TO-236-3, SC-59, SOT-23-3
Mounting Type: Surface Mount

Allowable Variation Parameters:

Tolerance: ±6% (primary specification); ±5% and ±2% represent tighter tolerances and are acceptable substitutes
Packaging Format: Tape & Reel (TR) is compatible with the primary part's packaging specification
Manufacturer: Taiwan Semiconductor Corporation and Diodes Incorporated parts are both qualified

All substitute parts listed maintain identical electrical performance across the mandatory parameters while offering variations in tolerance specifications and packaging configurations.

Parameter Comparison

Parameter	BZX84C15	BZX84C15 RFG	BZX84B15Q-7-F	BZX84C15Q-13-F	BZX84C15Q-7-F
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Voltage - Zener (Nom)	15 V	15 V	15 V	15 V	15 V
Tolerance	±6%	±5%	±2%	±6%	±6%
Power - Max	300 mW	300 mW	300 mW	300 mW	300 mW
Impedance (Max)	30 Ohms	30 Ohms	30 Ohms	30 Ohms	30 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 10.5 V	100 nA @ 10.5 V	100 nA @ 10.5 V	100 nA @ 10.5 V	100 nA @ 10.5 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Product Status	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Grade	-	-	Automotive	Automotive	Automotive
Qualification	-	-	AEC-Q101	AEC-Q101	AEC-Q101
Packaging Format	-	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and thermal equivalence to the BZX84C15 across all mandatory performance parameters. Selection among available substitutes is determined by specific application requirements and compliance certifications.

BZX84C15 RFG (Taiwan Semiconductor Corporation): Offers tighter tolerance specification at ±5% while maintaining identical electrical characteristics. Suitable for applications requiring enhanced voltage regulation precision. Available in Tape & Reel packaging format.

BZX84B15Q-7-F (Diodes Incorporated): Provides the tightest tolerance specification at ±2% and includes automotive-grade qualification with AEC-Q101 certification. Appropriate for automotive and mission-critical applications requiring enhanced reliability and precision voltage regulation.

BZX84C15Q-13-F (Diodes Incorporated): Maintains ±6% tolerance matching the primary part specification and includes automotive-grade qualification with AEC-Q101 certification. Suitable for automotive applications where standard tolerance performance is acceptable.

BZX84C15Q-7-F (Diodes Incorporated): Maintains ±6% tolerance matching the primary part specification and includes automotive-grade qualification with AEC-Q101 certification. Suitable for automotive applications where standard tolerance performance is acceptable. Includes Moisture Sensitivity Level 1 (Unlimited) specification.

All substitute parts comply with ROHS3 and REACH standards, matching the environmental compliance profile of the primary part.

Frequently Asked Questions (FAQ)

Q: Can BZX84C15Q-7-F be used as a direct replacement for BZX84C15?

A: Yes. The BZX84C15Q-7-F maintains identical electrical specifications across all critical parameters including 15 V nominal zener voltage, 300 mW power rating, 30 Ohms maximum impedance, and -65°C to 150°C operating temperature range. Both parts use SOT-23 packaging. The primary difference is the automotive-grade qualification and AEC-Q101 certification of the substitute part.

Q: What is the difference between ±6%, ±5%, and ±2% tolerance specifications?

A: Tolerance specification defines the allowable deviation from the nominal 15 V zener voltage. BZX84C15 and BZX84C15Q-13-F and BZX84C15Q-7-F allow ±6% deviation (14.1 V to 15.9 V). BZX84C15 RFG allows ±5% deviation (14.25 V to 15.75 V). BZX84B15Q-7-F allows ±2% deviation (14.7 V to 15.3 V). Tighter tolerances provide more precise voltage regulation.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) packaging format, which is compatible with automated assembly processes.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. Parts bearing this qualification have undergone rigorous testing and reliability assessment for automotive applications. BZX84B15Q-7-F, BZX84C15Q-13-F, and BZX84C15Q-7-F all carry AEC-Q101 qualification.

Q: Can I use an automotive-grade part in a non-automotive application?

A: Yes. Automotive-grade parts meet or exceed the performance and reliability requirements of standard-grade parts. Using an automotive-grade substitute in a non-automotive application introduces no compatibility issues and may provide enhanced reliability margins.

Q: What is Moisture Sensitivity Level (MSL)?

A: MSL indicates the maximum time a component can be exposed to ambient conditions before soldering. MSL 1 (Unlimited) means the component has no moisture sensitivity restrictions and can be stored indefinitely under normal conditions. BZX84C15Q-7-F carries MSL 1 specification.

Q: Are all substitute parts ROHS3 and REACH compliant?

A: Yes. All listed substitute parts comply with ROHS3 standards and are REACH Unaffected, matching the environmental compliance profile of the primary BZX84C15 part.

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