TZMB3V3-GS18 Equivalent & Substitute Parts

Part Overview

The TZMB3V3-GS18 is a Zener diode rated at 3.3 V nominal voltage with 500 mW maximum power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component is packaged in SOD-80 MiniMELF configuration and is qualified to AEC-Q101 automotive standards. The part is currently in active production status with 10,946 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product series, enabling component interchangeability in circuit designs where the primary part becomes unavailable or supply constraints require alternative sourcing.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3.3	V
Tolerance	±2%	—
Power - Max	500	mW
Impedance (Max)	90	Ohms
Current - Reverse Leakage @ Vr	2	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 200 mA
Operating Temperature Range	-65 to 175	°C
Package / Case	DO-213AC, MINI-MELF, SOD-80	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution eligibility for the TZMB3V3-GS18 is determined by strict equivalence across the following critical parameters:

Zener Voltage (Nominal): 3.3 V
Tolerance: ±2%
Maximum Power Dissipation: 500 mW
Maximum Impedance: 90 Ohms
Reverse Leakage Current: 2 µA @ 1 V
Forward Voltage: 1.5 V @ 200 mA
Operating Temperature Range: -65°C to 175°C
Package Configuration: SOD-80 MiniMELF (DO-213AC)
Mounting Technology: Surface Mount
Automotive Grade: AEC-Q101 qualified
Series Classification: TZM

The TZMB3V3-GS08 is classified as a parametric equivalent because it maintains identical electrical specifications and mechanical packaging while differing only in tape reel configuration (GS08 versus GS18 reel format). Both parts originate from the same TZM series base product number TZMB3V3 and carry equivalent certifications and compliance status.

Parameter Comparison

Parameter	TZMB3V3-GS18	TZMB3V3-GS08	Match
Voltage - Zener (Nom)	3.3 V	3.3 V	✓
Tolerance	±2%	±2%	✓
Power - Max	500 mW	500 mW	✓
Impedance (Max)	90 Ohms	90 Ohms	✓
Current - Reverse Leakage @ Vr	2 µA @ 1 V	2 µA @ 1 V	✓
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	✓
Operating Temperature Range	-65°C to 175°C	-65°C to 175°C	✓
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	✓
Mounting Type	Surface Mount	Surface Mount	✓
Grade	Automotive	Automotive	✓
Qualification	AEC-Q101	AEC-Q101	✓
Series	TZM	TZM	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓

Engineering Selection Recommendations

The TZMB3V3-GS08 is a direct functional equivalent to the TZMB3V3-GS18 for all circuit design and performance applications. Both parts are active production items manufactured by Vishay General Semiconductor - Diodes Division within the TZM series and carry identical AEC-Q101 automotive qualification. The electrical performance, thermal operating range, and package footprint are equivalent across all specified parameters.

Selection between these two part numbers is determined by supply chain requirements and tape reel configuration needs. The GS18 designation indicates an 18 mm tape reel format, while the GS08 designation indicates an 8 mm tape reel format. Both formats are compatible with standard surface mount assembly equipment. The choice between these variants depends on production volume requirements, existing inventory management systems, and component feeder compatibility with manufacturing equipment.

Both parts maintain ROHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with current manufacturing and environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can TZMB3V3-GS08 be used as a direct replacement for TZMB3V3-GS18 in production?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, operating temperature range, package configuration (SOD-80 MiniMELF), and automotive qualification (AEC-Q101). The only difference is the tape reel format (8 mm versus 18 mm), which affects component feeder compatibility but not circuit performance.

Q: What is the difference between GS18 and GS08 designations?

A: The suffix designates the tape reel width used for component packaging. GS18 indicates an 18 mm tape reel format, while GS08 indicates an 8 mm tape reel format. Both formats contain the same diode component and are compatible with appropriate surface mount assembly equipment.

Q: Are both parts suitable for automotive applications?

A: Yes. Both TZMB3V3-GS18 and TZMB3V3-GS08 are classified as automotive grade components and carry AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: Do these parts have the same moisture sensitivity level?

A: Yes. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical environmental and regulatory certifications.

Q: Can I mix TZMB3V3-GS18 and TZMB3V3-GS08 components in the same production run?

A: Yes, from a circuit performance perspective. However, production logistics may require separate handling due to different tape reel formats and feeder compatibility. Consult manufacturing equipment specifications and assembly process documentation.

Q: What is the base product number for both parts?

A: Both parts share the base product number TZMB3V3, indicating they are variants within the same product family with identical core specifications.

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