BZX84C8V2 TR Equivalent & Substitute Parts

Part Overview

The BZX84C8V2 TR is a surface mount Zener diode manufactured by Central Semiconductor Corp, rated at 8.2 V nominal Zener voltage with 350 mW maximum power dissipation. The device is packaged in SOT-23 (TO-236-3) configuration and operates across the temperature range of -65°C to 150°C. This part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the original BZX84C8V2 TR becomes unavailable, when alternative manufacturers are preferred for supply chain diversification, or when design requirements allow for compatible alternatives with different electrical characteristics within acceptable tolerance ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	8.2	V
Tolerance	±5%	-
Power - Maximum	350	mW
Impedance (Maximum)	15	Ohms
Current - Reverse Leakage @ Vr	700	nA @ 5 V
Voltage - Forward (Maximum) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 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 BZX84C8V2 TR is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 8.2 V nominal (fixed requirement)
Package type: SOT-23 / TO-236-3 (mechanical compatibility)
Mounting type: Surface Mount (assembly compatibility)
Operating temperature range: Minimum -55°C to 150°C (functional compatibility)
RoHS3 compliance and MSL 1 rating (regulatory and environmental compatibility)

Secondary Compatibility Parameters:

Power rating: 250 mW to 350 mW (functional margin)
Tolerance: ±1% to ±6% (acceptable variance)
Impedance: 8 to 15 Ohms maximum (performance margin)
Reverse leakage current: 100 to 700 nA (acceptable range)

Substitute parts are grouped into two categories based on power dissipation capability: 250 mW rated devices (lower power) and 300-350 mW rated devices (equivalent or higher power). All substitute parts maintain the 8.2 V Zener voltage specification and SOT-23 package configuration.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Temp Range (°C)	Status	Inventory
BZX84C8V2 TR	Central Semiconductor Corp	8.2	±5%	350	15	-65 to 150	Active	1134
BZX84-A8V2,215	Nexperia USA Inc.	8.2	±1%	250	15	-65 to 150	Active	8132
BZX84-C8V2,215	Nexperia USA Inc.	8.2	±5%	250	15	-65 to 150	Active	17400
BZX84-C8V2,235	Nexperia USA Inc.	8.2	±5%	250	15	-65 to 150	Active	21488
BZX84B8V2-TP	Micro Commercial Co	8.2	±2%	350	15	-55 to 150	Active	3027
BZX84C8V2-7-F	Diodes Incorporated	8.2	±6%	300	15	-65 to 150	Active	62400
BZX84C8V2-E3-08	Vishay General Semiconductor	8.2	±5%	300	15	-55 to 150	Active	65300
BZX84C8V2-HE3-08	Vishay General Semiconductor	8.2	±5%	300	15	-55 to 150	Obsolete	2134
BZX84C8V2-HE3-18	Vishay General Semiconductor	8.2	±5%	300	15	-55 to 150	Obsolete	10784
BZX84C8V2-TP	Micro Commercial Co	8.2	±5%	350	15	-55 to 150	Active	9435
DDZX8V2C-7	Diodes Incorporated	8.2	±2.55%	300	8	-65 to 150	Active	9200

Engineering Selection Recommendations

Direct Equivalents (Active Status, Identical Power Rating):

BZX84C8V2-TP (Micro Commercial Co) and BZX84B8V2-TP (Micro Commercial Co) are direct functional equivalents to the BZX84C8V2 TR. Both maintain the 350 mW power rating, 8.2 V Zener voltage, and SOT-23 package. BZX84C8V2-TP carries ±5% tolerance matching the original specification. BZX84B8V2-TP offers tighter ±2% tolerance with higher inventory availability (9435 units vs. 1134 units). Both are in active production status with RoHS3 compliance.

High-Availability Alternatives (Active Status, 300 mW Power Rating):

BZX84C8V2-7-F (Diodes Incorporated) and BZX84C8V2-E3-08 (Vishay General Semiconductor) provide 300 mW power dissipation with 8.2 V Zener voltage in SOT-23 packaging. BZX84C8V2-7-F offers the highest inventory level (62400 units) with ±6% tolerance and -65°C lower temperature limit. BZX84C8V2-E3-08 provides ±5% tolerance matching the original specification with 65300 units in stock. Both are in active production status with RoHS3 compliance.

Precision Tolerance Alternative:

DDZX8V2C-7 (Diodes Incorporated) delivers ±2.55% tolerance with improved impedance specification (8 Ohms vs. 15 Ohms maximum), resulting in lower dynamic resistance. This device operates across -65°C to 150°C with 300 mW power rating and maintains SOT-23 packaging and RoHS3 compliance. This option is suitable for applications requiring tighter voltage regulation.

Automotive-Grade Options:

BZX84-A8V2,215 and BZX84-C8V2,215 (Nexperia USA Inc.) are automotive-qualified devices (AEC-Q101) with 250 mW power rating. BZX84-A8V2,215 offers ±1% tolerance with 8132 units available. BZX84-C8V2,215 and BZX84-C8V2,235 provide ±5% tolerance with 17400 and 21488 units respectively. These parts are suitable for applications requiring automotive-grade qualification where 250 mW power dissipation is acceptable.

Parts to Avoid:

BZX84C8V2-HE3-08 and BZX84C8V2-HE3-18 (Vishay General Semiconductor) are marked as obsolete and should not be selected for new designs despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can I substitute BZX84C8V2 TR with a 250 mW rated device?

A: Yes, if your circuit design does not require the full 350 mW power dissipation capability. The BZX84-C8V2,215 and BZX84-C8V2,235 (Nexperia) are qualified substitutes with identical 8.2 V Zener voltage, ±5% tolerance, and SOT-23 packaging. Verify that your application's maximum power dissipation does not exceed 250 mW before selection.

Q: What is the difference between ±1%, ±2%, ±2.55%, ±5%, and ±6% tolerance options?

A: Tolerance specifies the acceptable deviation from the nominal 8.2 V Zener voltage. ±1% tolerance (BZX84-A8V2,215) provides the tightest voltage regulation (8.118 V to 8.282 V). ±5% tolerance (BZX84C8V2 TR, BZX84-C8V2,215, BZX84C8V2-TP) allows 7.79 V to 8.61 V. ±6% tolerance (BZX84C8V2-7-F) allows 7.71 V to 8.69 V. Select based on your circuit's voltage regulation requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts carry RoHS3 compliance status. All devices also maintain MSL 1 (Unlimited) moisture sensitivity level, matching the original BZX84C8V2 TR specification.

Q: Can I use an obsolete part as a substitute?

A: No. BZX84C8V2-HE3-08 and BZX84C8V2-HE3-18 are marked as obsolete and should not be selected for new designs. Use only active status parts: BZX84C8V2-TP, BZX84B8V2-TP, BZX84C8V2-7-F, BZX84C8V2-E3-08, DDZX8V2C-7, or the Nexperia automotive-grade options.

Q: What is the difference between SOT-23 and TO-236-3 packaging?

A: SOT-23 and TO-236-3 are equivalent designations for the same three-lead surface mount package. All listed substitute parts use this identical package configuration, ensuring mechanical and assembly compatibility with the original BZX84C8V2 TR.

Q: Which substitute offers the best inventory availability?

A: BZX84C8V2-E3-08 (Vishay) provides the highest inventory with 65300 units in stock, followed by BZX84C8V2-7-F (Diodes Incorporated) with 62400 units. Both are active status devices with 300 mW power rating and 8.2 V Zener voltage.

Q: Can I use DDZX8V2C-7 in place of BZX84C8V2 TR?

A: Yes. DDZX8V2C-7 is a functional substitute with 8.2 V Zener voltage, SOT-23 packaging, and -65°C to 150°C operating range. It offers superior impedance specification (8 Ohms vs. 15 Ohms) and tighter ±2.55% tolerance. The 300 mW power rating is lower than the original 350 mW, so verify your application does not exceed this limit.

Q: What is the operating temperature difference between -55°C and -65°C lower limits?

A: Some substitute parts (BZX84B8V2-TP, BZX84C8V2-E3-08, BZX84C8V2-HE3-08, BZX84C8V2-HE3-18, BZX84C8V2-TP) operate from -55°C minimum, while others (BZX84C8V2 TR, BZX84-A8V2,215, BZX84-C8V2,215, BZX84-C8V2,235, BZX84C8V2-7-F, DDZX8V2C-7) operate from -65°C minimum. Select -65°C rated devices if your application requires operation below -55°C.

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