BZX84C3V0-TP Equivalent & Substitute Parts

Part Overview

The BZX84C3V0-TP is a 3 V Zener diode rated at 350 mW in a surface mount SOT-23 package, manufactured by Micro Commercial Co. This component is classified as Active and is in current production. The device is designed for voltage regulation and protection applications requiring a 3 V reference voltage with ±5% tolerance. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative sourcing strategies while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	3	V
Tolerance	±5	%
Power - Maximum	350	mW
Impedance (Maximum)	95	Ohms
Current - Reverse Leakage @ Vr	10	µA @ 1 V
Voltage - Forward (Maximum) @ If	900	mV @ 10 mA
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 BZX84C3V0-TP is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 3 V nominal
Package / Case: TO-236-3, SC-59, SOT-23-3 (surface mount compatibility)
Mounting Type: Surface Mount
Forward voltage: 900 mV @ 10 mA maximum
Reverse leakage current: 10 µA @ 1 V maximum
Impedance: 95 Ohms maximum

Secondary Compatibility Factors:

Power rating: 225 mW to 350 mW (lower ratings acceptable for reduced power applications)
Tolerance: ±1% to ±7% (tighter tolerances acceptable; wider tolerances require application verification)
Operating temperature range: -55°C to -65°C minimum; 150°C maximum
RoHS3 compliance and regulatory status

Substitute parts are grouped into two categories: Upgrade parts (direct replacements with equivalent or superior specifications) and Similar parts (compatible alternatives with minor parameter variations within acceptable engineering limits).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (V)	Tolerance (%)	Power (mW)	Zzt (Ohms)	Ir @ Vr (µA)	Vf @ If (mV)	Temp Range (°C)	Package	Status
BZX84C3V0-TP	Micro Commercial Co	3	±5	350	95	10 @ 1V	900 @ 10mA	-55 to 150	SOT-23	Active
BZX84C3V0-7-F	Diodes Incorporated	3	±7	300	95	10 @ 1V	900 @ 10mA	-65 to 150	SOT-23-3	Active
BZX84-A3V0,215	NXP USA Inc.	3	±1	250	95	10 @ 1V	900 @ 10mA	-65 to 150	SOT-23-3	Active
BZX84-C3V0,215	NXP Semiconductors	3	±5	250	95	10 @ 1V	900 @ 10mA	-65 to 150	SOT-23-3	Active
BZX84-C3V0,235	Nexperia USA Inc.	3	±5	250	95	10 @ 1V	900 @ 10mA	-65 to 150	SOT-23-3	Active
BZX84B3V0Q-7-F	Diodes Incorporated	3	±2	300	95	10 @ 1V	900 @ 10mA	-65 to 150	SOT-23-3	Active
BZX84C3V0-E3-08	Vishay General Semiconductor - Diodes Division	3	±5	300	95	10 @ 1V	N/A	-55 to 150	SOT-23-3	Active
BZX84C3V0-G3-08	Vishay General Semiconductor - Diodes Division	3	±5	300	95	10 @ 1V	N/A	-55 to 150	SOT-23-3	Active
BZX84C3V0LT1G	onsemi	3	±7	225	95	10 @ 1V	900 @ 10mA	-65 to 150	SOT-23-3	Active
MMBZ5225B-7-F	Diodes Incorporated	3	±5	350	30	50 @ 1V	900 @ 10mA	-65 to 150	SOT-23-3	Active
SZBZX84C3V0LT1G	onsemi	3	±5	225	95	10 @ 1V	900 @ 10mA	-65 to 150	SOT-23-3	Active

Engineering Selection Recommendations

Direct Upgrade Substitute:

BZX84C3V0-7-F (Diodes Incorporated) is the primary upgrade substitute. This part maintains the 3 V nominal zener voltage, 95 Ohm impedance, and 10 µA reverse leakage specification. The tolerance widens from ±5% to ±7%, and power rating decreases from 350 mW to 300 mW. Operating temperature range extends to -65°C minimum. This part is suitable for applications where the reduced power rating and wider tolerance are acceptable.

Compatible Substitutes with Reduced Power Rating:

BZX84-A3V0,215, BZX84-C3V0,215, and BZX84-C3V0,235 (NXP and Nexperia) are compatible substitutes with 250 mW power ratings. These parts maintain the 3 V zener voltage and 95 Ohm impedance. BZX84-A3V0,215 offers tighter ±1% tolerance. All three parts extend operating temperature to -65°C minimum and carry AEC-Q101 automotive qualification. These parts are suitable for applications with lower power dissipation requirements.

Tight Tolerance Alternative:

BZX84B3V0Q-7-F (Diodes Incorporated) provides ±2% tolerance with 300 mW power rating and AEC-Q101 qualification. This part is suitable for precision voltage reference applications requiring tighter tolerance control.

Lower Power Alternatives:

BZX84C3V0LT1G and SZBZX84C3V0LT1G (onsemi) both provide 225 mW power ratings with 3 V zener voltage. SZBZX84C3V0LT1G carries AEC-Q101 automotive qualification and ±5% tolerance. These parts are suitable for low-power applications.

Alternative Impedance Characteristic:

MMBZ5225B-7-F (Diodes Incorporated) maintains 350 mW power rating and 3 V zener voltage but features 30 Ohm impedance (versus 95 Ohm) and 50 µA reverse leakage (versus 10 µA). This part is suitable only when lower impedance and higher leakage current are acceptable for the application.

Vishay Alternatives:

BZX84C3V0-E3-08 and BZX84C3V0-G3-08 (Vishay) provide 300 mW power ratings with ±5% tolerance and 95 Ohm impedance. Operating temperature range is -55°C to 150°C. These parts are suitable for applications within the standard temperature range.

All substitute parts are Active status, RoHS3 compliant, and available in surface mount SOT-23-3 packaging compatible with the original BZX84C3V0-TP footprint.

Frequently Asked Questions (FAQ)

Q: Can BZX84C3V0-7-F replace BZX84C3V0-TP directly?

A: Yes. BZX84C3V0-7-F is a direct substitute with equivalent electrical performance. The tolerance specification widens from ±5% to ±7%, and power rating decreases from 350 mW to 300 mW. The zener voltage, impedance, reverse leakage, and forward voltage specifications remain identical. Operating temperature range extends to -65°C minimum.

Q: What is the difference between the NXP parts (BZX84-A3V0,215 and BZX84-C3V0,215) and the original BZX84C3V0-TP?

A: Both NXP parts reduce power rating from 350 mW to 250 mW. BZX84-A3V0,215 offers tighter ±1% tolerance compared to the original ±5%. BZX84-C3V0,215 maintains ±5% tolerance. Both parts extend operating temperature to -65°C and carry AEC-Q101 automotive qualification. All other electrical parameters remain compatible.

Q: Are the Vishay parts (BZX84C3V0-E3-08 and BZX84C3V0-G3-08) suitable for automotive applications?

A: The Vishay parts do not carry AEC-Q101 qualification. They are suitable for industrial and commercial applications within the -55°C to 150°C operating temperature range. For automotive applications, select parts with AEC-Q101 qualification such as BZX84-A3V0,215, BZX84-C3V0,215, BZX84B3V0Q-7-F, or SZBZX84C3V0LT1G.

Q: What is the significance of the MMBZ5225B-7-F impedance specification of 30 Ohms versus 95 Ohms in other parts?

A: Lower impedance (30 Ohms) results in better voltage regulation under load changes and lower dynamic resistance. However, MMBZ5225B-7-F also specifies 50 µA reverse leakage current versus 10 µA in other parts. This part is suitable only when lower impedance and higher leakage current are acceptable for the specific application circuit.

Q: Can I use BZX84C3V0LT1G or SZBZX84C3V0LT1G in place of BZX84C3V0-TP?

A: Both onsemi parts are compatible substitutes with reduced power rating (225 mW versus 350 mW). BZX84C3V0LT1G offers ±7% tolerance without automotive qualification. SZBZX84C3V0LT1G provides ±5% tolerance with AEC-Q101 qualification. Use these parts only in applications where the lower power rating is acceptable.

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

A: Yes. All substitute parts are packaged in TO-236-3, SC-59, or SOT-23-3 surface mount packages, which are mechanically and electrically compatible with the original BZX84C3V0-TP footprint.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape packaging is supplied in individual strips suitable for manual assembly or small-volume production. Tape & Reel packaging is supplied on continuous reels suitable for automated assembly equipment. Both formats contain identical components; packaging format selection depends on assembly process requirements.

Q: Which substitute part offers the tightest tolerance specification?

A: BZX84-A3V0,215 (NXP USA Inc.) offers ±1% tolerance, the tightest specification among all listed parts. This part is suitable for precision voltage reference applications requiring strict tolerance control.

Q: Can I use parts with lower power ratings (225 mW or 250 mW) in circuits designed for 350 mW?

A: Lower power-rated parts can be used only if the actual power dissipation in the circuit is within the lower rating. Verify that the circuit design does not exceed the substitute part's power specification. Exceeding power rating will result in device failure.

Q: What compliance certifications are common across all substitute parts?

A: All substitute parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8541.10.0050. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts. AEC-Q101 automotive qualification is available on selected parts: BZX84-A3V0,215, BZX84-C3V0,215, BZX84-C3V0,235, BZX84B3V0Q-7-F, and SZBZX84C3V0LT1G.

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