BZT52C3V3S RRG Equivalent & Substitute Parts

Part Overview

The BZT52C3V3S RRG is a 3.3 V Zener diode manufactured by Taiwan Semiconductor Corporation, rated for 200 mW power dissipation in a surface mount SOD-323F package. This component is classified as Active and maintains full ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1). Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage circuits. Alternative part numbers are identified to support procurement flexibility, supply chain continuity, and application-specific tolerance requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3.3	V
Tolerance	±5%	-
Power - Max	200	mW
Impedance (Max)	95	Ohms
Current - Reverse Leakage @ Vr	4.5	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1	V @ 10 mA
Operating Temperature	-65 to 150	°C (TJ)
Mounting Type	Surface Mount	-
Package / Case	SC-90, SOD-323F	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the BZT52C3V3S RRG is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 3.3 V nominal
Maximum power rating: 200 mW
Package type: SOD-323F (SC-90)
Mounting configuration: Surface Mount
Operating temperature range: -65°C to 150°C minimum
Compliance: ROHS3, MSL 1

Secondary Variation Allowance:

Tolerance: ±2% or ±5% (tighter tolerance acceptable)
Impedance: 89 to 95 Ohms (minor variation acceptable)
Reverse leakage: 4.5 µA @ 1 V (consistent across all equivalents)
Forward voltage: 1 V @ 10 mA (consistent across all equivalents)

Manufacturer Variations: Equivalent parts from onsemi (MM3Z series) and Rohm Semiconductor (UDZVTE series) meet all primary criteria with identical electrical performance within specified tolerances. Taiwan Semiconductor Corporation variants (BZT52B and BZT52C series) provide direct parametric equivalence with packaging options in Cut Tape and Digi-Reel formats.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Package	Temp Range	RoHS
BZT52C3V3S RRG	Taiwan Semiconductor	3.3 V	±5%	200 mW	95 Ω	SOD-323F	-65 to 150°C	ROHS3
BZT52C3V3S R9G	Taiwan Semiconductor	3.3 V	±5%	200 mW	95 Ω	SOD-323F	-65 to 150°C	ROHS3
BZT52B3V3S R9G	Taiwan Semiconductor	3.3 V	±2%	200 mW	95 Ω	SOD-323F	-65 to 150°C	ROHS3
MM3Z3V3C	onsemi	3.3 V	±5%	200 mW	89 Ω	SOD-323F	-65 to 150°C	ROHS3
MM3Z3V3B	onsemi	3.3 V	±2%	200 mW	89 Ω	SOD-323F	-65 to 150°C	ROHS3
UDZVTE-173.3B	Rohm Semiconductor	3.3 V	-	200 mW	-	SOD-323F	-55 to 150°C	ROHS3

Engineering Selection Recommendations

Direct Parametric Equivalents (Identical Specifications):

BZT52C3V3S R9G and BZT52C3V3S RRG are functionally identical with matching tolerance (±5%), impedance (95 Ω), and all electrical parameters. Selection between these Taiwan Semiconductor variants depends on packaging format availability: RRG denotes standard packaging while R9G specifies Cut Tape and Digi-Reel options.

Tighter Tolerance Alternative:

BZT52B3V3S R9G provides ±2% tolerance specification compared to the ±5% of the main part. This variant is suitable for applications requiring improved voltage accuracy. All other electrical and thermal parameters remain equivalent. This part is available in Cut Tape and Digi-Reel packaging.

Cross-Manufacturer Equivalents:

MM3Z3V3C (onsemi) matches the ±5% tolerance specification with identical 3.3 V nominal voltage and 200 mW power rating. Impedance is specified at 89 Ω, within acceptable variation. Operating temperature range is -65°C to 150°C. ROHS3 compliance and MSL 1 rating are maintained.

MM3Z3V3B (onsemi) provides the ±2% tolerance variant with 89 Ω impedance specification. This part is functionally equivalent to BZT52B3V3S R9G with identical tolerance and thermal performance.

Alternative Package Consideration:

UDZVTE-173.3B (Rohm Semiconductor) maintains 3.3 V nominal voltage and 200 mW power rating in SOD-323F package. Operating temperature range is -55°C to 150°C, which covers the primary operating window of the main part. This part uses UMD2 supplier device package designation. ROHS3 compliance and MSL 1 rating are confirmed.

All substitute parts maintain Active product status and full regulatory compliance (ROHS3, REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can BZT52B3V3S R9G replace BZT52C3V3S RRG in all applications?

A: BZT52B3V3S R9G is a direct substitute with superior tolerance specification (±2% versus ±5%). The tighter tolerance provides improved voltage accuracy. All other electrical parameters, thermal ratings, and package specifications are identical. Selection depends on application tolerance requirements.

Q: What is the difference between MM3Z3V3C and MM3Z3V3B?

A: Both are onsemi manufactured 3.3 V Zener diodes in SOD-323F package with 200 mW power rating. MM3Z3V3C specifies ±5% tolerance while MM3Z3V3B specifies ±2% tolerance. Impedance is 89 Ω for both variants. Selection is based on required voltage accuracy for the application.

Q: Is UDZVTE-173.3B compatible with the original BZT52C3V3S RRG?

A: UDZVTE-173.3B is electrically compatible with identical 3.3 V nominal voltage and 200 mW power rating in SOD-323F package. Operating temperature range is -55°C to 150°C, which covers standard operating conditions. The part uses UMD2 supplier package designation. Physical footprint compatibility with SOD-323F should be verified for PCB layout.

Q: What does the tolerance specification mean for Zener diode selection?

A: Tolerance indicates the allowable deviation from the nominal 3.3 V specification. ±5% tolerance allows ±0.165 V deviation (3.135 V to 3.465 V range). ±2% tolerance allows ±0.066 V deviation (3.234 V to 3.366 V range). Applications requiring precise voltage regulation benefit from ±2% tolerance variants.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts (BZT52C3V3S R9G, BZT52B3V3S R9G, MM3Z3V3C, MM3Z3V3B, and UDZVTE-173.3B) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Regulatory compliance is maintained across all alternatives.

Q: What is the significance of impedance variation between 89 Ω and 95 Ω?

A: Impedance (Zzt) represents the dynamic impedance of the Zener diode at the specified test current. The variation between 89 Ω (onsemi MM3Z series) and 95 Ω (Taiwan Semiconductor BZT52 series) is within acceptable engineering tolerance for 3.3 V 200 mW Zener applications. Both values support equivalent voltage regulation performance.

Q: Can I use these parts interchangeably on the same PCB?

A: All substitute parts use SOD-323F package (SC-90 case) with identical footprint dimensions. Physical interchangeability on PCB is confirmed. Electrical interchangeability is confirmed for all parameters within specified tolerances. Verify component orientation and polarity during assembly.

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