BZX84B8V2-TP Equivalent & Substitute Parts

Part Overview

The BZX84B8V2-TP is an 8.2 V Zener diode rated at 350 mW maximum power dissipation in a surface mount SOT-23 package. Manufactured by Micro Commercial Co, this component is actively produced and widely used in voltage regulation and protection circuits. The part is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical tolerances of alternative manufacturers' offerings.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	8.2	V
Tolerance	±2%	—
Power - Maximum	350	mW
Impedance (Maximum)	15	Ohms
Current - Reverse Leakage @ 5V	700	nA
Voltage - Forward (Maximum) @ 10 mA	900	mV
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the BZX84B8V2-TP is determined by the following critical parameters:

Electrical Compatibility Requirements:

Zener voltage (Vz) must be 8.2 V nominal
Tolerance must be ±2% or tighter
Maximum power dissipation must be equal to or greater than 350 mW
Impedance (Zzt) must be 15 Ohms or less
Reverse leakage current must not exceed 700 nA @ 5 V
Forward voltage must not exceed 900 mV @ 10 mA

Mechanical & Environmental Compatibility:

Package must be TO-236-3, SC-59, or SOT-23-3 (physically and electrically equivalent)
Mounting type must be Surface Mount
Operating temperature range must encompass -55°C to 150°C or be compatible with application requirements
RoHS3 compliance required

All substitute parts listed meet these criteria and are functionally interchangeable within the specified electrical and mechanical constraints.

Parameter Comparison

Parameter	BZX84B8V2-TP (Main)	BZX84-A8V2,215	BZX84-B8V2,215	BZX84-B8V2,235	BZX84B8V2LT1G
Manufacturer	Micro Commercial Co	Nexperia USA Inc.	Nexperia USA Inc.	NXP USA Inc.	onsemi
Voltage - Zener (Nom)	8.2 V	8.2 V	8.2 V	8.2 V	8.2 V
Tolerance	±2%	±1%	±2%	±2%	±2%
Power - Max	350 mW	250 mW	250 mW	250 mW	225 mW
Impedance (Max)	15 Ohms	15 Ohms	15 Ohms	15 Ohms	15 Ohms
Current - Reverse Leakage @ 5V	700 nA	700 nA	700 nA	700 nA	700 nA
Voltage - Forward (Max) @ 10 mA	900 mV	900 mV	900 mV	900 mV	900 mV
Operating Temperature	-55 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C
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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant
Automotive Grade	Not specified	Yes (AEC-Q101)	Yes (AEC-Q101)	Yes (AEC-Q101)	Not specified

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility):

BZX84-B8V2,215 and BZX84-B8V2,235 are direct substitutes with identical electrical specifications to the main part. Both are manufactured by Nexperia/NXP USA Inc., carry AEC-Q101 automotive qualification, and maintain ROHS3 compliance. These parts operate across an extended temperature range (-65 to 150°C) compared to the main part (-55 to 150°C). Selection between these two depends on packaging requirements: BZX84-B8V2,215 is supplied in Tape & Reel format, while BZX84-B8V2,235 is supplied in Bulk packaging.

Secondary Substitute (Reduced Power Rating):

BZX84B8V2LT1G (onsemi) is functionally compatible but rated at 225 mW maximum power dissipation, compared to 350 mW for the main part. This part is suitable only for applications where the actual power dissipation does not exceed 225 mW. The part maintains all other electrical specifications and operates across the extended temperature range (-65 to 150°C). ROHS3 compliance is confirmed.

Tighter Tolerance Option:

BZX84-A8V2,215 (Nexperia USA Inc.) offers ±1% tolerance compared to ±2% for the main part, providing superior voltage regulation accuracy. However, this part is rated at 250 mW maximum power, making it unsuitable for applications requiring the full 350 mW dissipation capability of the main part. AEC-Q101 automotive qualification and ROHS3 compliance are confirmed. This part is suitable only when power dissipation remains below 250 mW.

Selection Criteria:

For applications requiring full 350 mW power dissipation: use BZX84-B8V2,215 or BZX84-B8V2,235
For applications with power dissipation below 250 mW and requiring tighter tolerance: use BZX84-A8V2,215
For applications with power dissipation below 225 mW: use BZX84B8V2LT1G
For automotive applications: BZX84-A8V2,215, BZX84-B8V2,215, and BZX84-B8V2,235 carry AEC-Q101 qualification

Frequently Asked Questions (FAQ)

Q: Can BZX84-A8V2,215 be used as a direct replacement for BZX84B8V2-TP?

A: BZX84-A8V2,215 is electrically compatible for zener voltage and impedance specifications. However, it is rated at 250 mW maximum power dissipation compared to 350 mW for the main part. Use this substitute only if the application's actual power dissipation does not exceed 250 mW. The ±1% tolerance provides improved voltage regulation accuracy.

Q: What is the difference between BZX84-B8V2,215 and BZX84-B8V2,235?

A: Both parts are electrically identical with 8.2 V nominal voltage, ±2% tolerance, and 250 mW maximum power rating. The primary difference is packaging: BZX84-B8V2,215 is supplied in Tape & Reel format, while BZX84-B8V2,235 is supplied in Bulk packaging. Select based on your procurement and assembly requirements.

Q: Is BZX84B8V2LT1G suitable for all applications using BZX84B8V2-TP?

A: BZX84B8V2LT1G maintains the same 8.2 V zener voltage and ±2% tolerance but is rated at 225 mW maximum power dissipation. This part is suitable only for applications where actual power dissipation remains below 225 mW. Verify your circuit's power requirements before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: BZX84-A8V2,215, BZX84-B8V2,215, and BZX84B8V2LT1G are confirmed ROHS3 compliant. BZX84-B8V2,235 RoHS status is not specified in the provided data. Confirm compliance requirements with your procurement department before selection.

Q: Do the substitute parts have automotive qualification?

A: BZX84-A8V2,215, BZX84-B8V2,215, and BZX84-B8V2,235 carry AEC-Q101 automotive qualification. BZX84B8V2LT1G automotive qualification status is not specified. For automotive applications, select from the Nexperia/NXP parts.

Q: Can I use BZX84-A8V2,215 for improved voltage accuracy?

A: Yes. BZX84-A8V2,215 offers ±1% tolerance compared to ±2% for the main part, providing tighter voltage regulation. However, verify that your application's power dissipation does not exceed 250 mW, as this part is rated below the main part's 350 mW specification.

Q: Are all substitute parts in the same SOT-23 package?

A: All substitute parts use TO-236-3, SC-59, or SOT-23-3 package designations, which are physically and electrically equivalent. Pin configurations and PCB footprints are identical, allowing direct board-level substitution without layout modifications.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts operate across -65°C to 150°C, which encompasses the main part's -55°C to 150°C range. Substitute parts provide extended low-temperature operation capability.

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