BZT52C8V2S-TP Equivalent & Substitute Parts

Part Overview

The BZT52C8V2S-TP is an 8.2 V Zener diode manufactured by Micro Commercial Co, rated for 200 mW power dissipation in a surface mount SOD-323 package. This component is classified as Active and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching or exceeding electrical specifications while maintaining compatibility with the original package footprint and thermal operating range. Substitute parts enable design flexibility, support supply chain continuity, and accommodate application-specific performance requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	8.2	V
Tolerance	±6%	—
Power - Max	200	mW
Impedance (Max)	15	Ohms
Current - Reverse Leakage @ Vr	700 nA @ 5 V	—
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	—
Operating Temperature	-65 to 150	°C
Package / Case	SC-76, SOD-323	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution logic for the BZT52C8V2S-TP is based on the following criteria:

Primary Matching Parameters:

Zener voltage: 8.2 V nominal (±6% tolerance or tighter)
Package compatibility: SOD-323 or SOD-323F footprint
Operating temperature range: -65°C to 150°C
Surface mount mounting type
RoHS3 compliance

Power Rating Consideration: Substitute parts are grouped into two categories based on power dissipation:

Direct Equivalents (200 mW): Parts with identical 200 mW power rating maintain exact electrical and thermal characteristics.
Higher Power Alternatives (300 mW, 400 mW, 500 mW, 550 mW): Parts with increased power ratings provide enhanced thermal margin and can be used in applications where the original 200 mW rating is marginal. These parts are electrically compatible but occupy different package variants (SOD-323F vs. SOD-323).

Tolerance Consideration: Parts with tighter tolerance specifications (±2%, ±3%, ±5%) are compatible with applications requiring the original ±6% tolerance. Parts with looser tolerances are not listed as direct substitutes.

Package Variant Note: SOD-323 (SC-76) and SOD-323F (SC-90) packages share the same footprint but differ in physical dimensions. Verification of PCB layout compatibility is required when transitioning between these variants.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Package	Grade	Status
BZT52C8V2S-TP	Micro Commercial Co	8.2	±6%	200	15	SOD-323	—	Active
MM3Z8V2T1G	onsemi	8.2	±6%	300	15	SOD-323	—	Active
SZMM3Z8V2T1G	onsemi	8.2	±6%	300	15	SOD-323	Automotive (AEC-Q101)	Active
BZX84J-B8V2,115	Nexperia USA Inc.	8.2	±2%	550	10	SOD-323F	Automotive (AEC-Q101)	Active
BZX84J-C8V2,115	Nexperia USA Inc.	8.2	±5%	550	10	SOD-323F	Automotive (AEC-Q101)	Active
D3Z8V2BF-7	Diodes Incorporated	8.19	±2%	400	10	SOD-323F	—	Active
DDZ8V2CSF-7	Diodes Incorporated	8.24	±3%	500	30	SOD-323F	—	Active
DDZ9694S-7	Diodes Incorporated	8.2	±5%	200	—	SOD-323	—	Active
MM3Z8V2B	onsemi	8.2	±2%	200	14	SOD-323F	—	Active
MM3Z8V2C	Fairchild Semiconductor	8.2	±5%	200	14	SOD-323F	—	Active
MM3Z8V2ST1G	onsemi	8.2	±2%	300	15	SOD-323	—	Active

Engineering Selection Recommendations

Direct Equivalents (Same Package, Same Power Rating):

DDZ9694S-7 (Diodes Incorporated) is a direct equivalent to BZT52C8V2S-TP. Both parts feature 8.2 V nominal voltage, 200 mW power rating, SOD-323 package, and -65°C to 150°C operating range. This part is suitable for one-to-one replacement in existing designs without PCB modification.

Higher Power Alternatives (Same Package, Increased Power Rating):

MM3Z8V2T1G and MM3Z8V2ST1G (onsemi) provide 300 mW power dissipation in the SOD-323 package, offering 50% additional thermal margin over the original 200 mW specification. Both parts maintain 8.2 V nominal voltage and -65°C to 150°C operating range. These parts are suitable for applications where thermal performance is a design constraint.

SZMM3Z8V2T1G (onsemi) is an automotive-grade variant of MM3Z8V2T1G, qualified to AEC-Q101 standard. This part is required for automotive applications demanding formal qualification documentation.

Higher Power Alternatives (Different Package, Increased Power Rating):

BZX84J-B8V2,115 and BZX84J-C8V2,115 (Nexperia USA Inc.) provide 550 mW power dissipation in the SOD-323F package. Both parts feature tighter tolerance specifications (±2% and ±5% respectively) and automotive-grade qualification (AEC-Q101). These parts require PCB layout verification due to SOD-323F package differences but deliver superior thermal performance.

D3Z8V2BF-7 (Diodes Incorporated) provides 400 mW power dissipation in the SOD-323F package with ±2% tolerance. This part offers intermediate thermal performance between 200 mW and 550 mW options.

DDZ8V2CSF-7 (Diodes Incorporated) provides 500 mW power dissipation in the SOD-323F package with ±3% tolerance. Zener voltage is specified as 8.24 V, which falls within acceptable tolerance range relative to the original 8.2 V specification.

Compliance Status:

All listed substitute parts are Active status and ROHS3 compliant, matching the original part's regulatory standing. Automotive-grade parts (SZMM3Z8V2T1G, BZX84J-B8V2,115, BZX84J-C8V2,115) carry AEC-Q101 qualification for applications requiring formal automotive component certification.

Frequently Asked Questions (FAQ)

Q: Can I use a higher power-rated Zener diode as a substitute for the BZT52C8V2S-TP?

A: Yes. Higher power-rated parts (300 mW, 400 mW, 500 mW, 550 mW) are electrically compatible with the original 200 mW specification. The increased power rating provides additional thermal margin and does not degrade circuit performance. However, package variant changes (SOD-323 to SOD-323F) require PCB layout verification.

Q: What is the difference between SOD-323 and SOD-323F packages?

A: Both packages share the same electrical footprint and pin configuration. SOD-323F (SC-90) has slightly larger physical dimensions than SOD-323 (SC-76). Verification of PCB land pattern compatibility is required before substituting between these variants.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the original BZT52C8V2S-TP compliance status.

Q: Which substitute part should I select for automotive applications?

A: SZMM3Z8V2T1G, BZX84J-B8V2,115, and BZX84J-C8V2,115 are automotive-grade parts qualified to AEC-Q101 standard. These parts are required for applications subject to automotive component qualification requirements.

Q: Can I substitute a part with tighter tolerance (±2%, ±3%, ±5%) for the original ±6% tolerance specification?

A: Yes. Parts with tighter tolerance specifications are compatible with applications designed for ±6% tolerance. The tighter tolerance provides improved voltage regulation accuracy without introducing compatibility issues.

Q: What is the impact of impedance (Zzt) differences between substitute parts?

A: Impedance affects the dynamic resistance of the Zener diode at operating current. Lower impedance values (10 Ohms vs. 15 Ohms) provide improved voltage regulation under load transients. Impedance differences are acceptable for most applications but should be verified in circuits with stringent voltage regulation requirements.

Q: Are there inventory considerations when selecting a substitute part?

A: Inventory availability varies by part number and manufacturer. SZMM3Z8V2T1G (onsemi) has the highest inventory level (587,400 pcs), while BZX84J-B8V2,115 (Nexperia) has lower availability (1,175 pcs). Supply chain requirements should be evaluated during part selection.

Q: Can I use MM3Z8V2B or MM3Z8V2C as direct replacements for BZT52C8V2S-TP?

A: MM3Z8V2B and MM3Z8V2C are compatible substitutes with identical 8.2 V voltage and 200 mW power rating. However, both parts use the SOD-323F package variant. PCB layout compatibility must be verified before implementation.

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