VLZ13C-GS18 Equivalent & Substitute Parts

Part Overview

The VLZ13C-GS18 is a Zener diode rated at 13.33 V nominal with 500 mW power dissipation in a SOD-80 QuadroMELF surface mount package, manufactured by Vishay General Semiconductor - Diodes Division. This component is classified as Obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement. The part carries AEC-Q101 automotive qualification and ROHS3 compliance.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	13.33 V
Power - Max	500 mW
Impedance (Max) (Zzt)	14 Ohms
Current - Reverse Leakage @ Vr	40 µA @ 12.3 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA
Operating Temperature Range	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	SOD-80 QuadroMELF
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the VLZ13C-GS18 is determined by the following critical parameters: nominal Zener voltage within acceptable tolerance, maximum power dissipation rating, operating temperature range, surface mount configuration, and regulatory compliance status. The substitute parts identified maintain the 13 V to 13.33 V Zener voltage range, 500 mW power rating, and -65°C to 175°C operating temperature specification. All substitutes are surface mount devices with ROHS3 or equivalent compliance. Package variations (SOD-80 MiniMELF versus DO-213AA) represent physical form factor differences that may require PCB layout evaluation but do not affect electrical performance within the specified parameters.

Parameter Comparison

Parameter	VLZ13C-GS18 (Main)	TLZ13C-GS18	1N4107UR-1	1N964BUR-1
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	Microchip Technology	Microchip Technology
Voltage - Zener (Nom) (Vz)	13.33 V	13 V	13 V	13 V
Tolerance	-	-	±5%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW
Impedance (Max) (Zzt)	14 Ohms	14 Ohms	200 Ohms	13 Ohms
Current - Reverse Leakage @ Vr	40 µA @ 12.3 V	40 nA @ 12.3 V	50 nA @ 9.9 V	500 nA @ 9.9 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature Range	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-80 QuadroMELF	SOD-80 MiniMELF	DO-213AA	DO-213AA
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

TLZ13C-GS18 is the primary direct substitute for the VLZ13C-GS18. Both components are manufactured by Vishay General Semiconductor, share identical electrical specifications (13 V nominal, 500 mW, 14 Ohms impedance, -65°C to 175°C operating range), and maintain ROHS3 compliance. The TLZ13C-GS18 is currently in Active product status with higher inventory availability (1123 Pcs). The package form factor differs (SOD-80 MiniMELF versus SOD-80 QuadroMELF), requiring PCB layout verification for mechanical fit and thermal performance.

1N964BUR-1 (Microchip Technology) is an alternative substitute meeting the 13 V nominal voltage, 500 mW power rating, and -65°C to 175°C operating temperature requirements. This part maintains ROHS3 compliance and Active product status. The impedance specification (13 Ohms) is comparable to the main part. The package form factor is DO-213AA, differing from the original SOD-80 configuration. Reverse leakage current is elevated at 500 nA @ 9.9 V compared to the main part specification.

1N4107UR-1 (Microchip Technology) meets the 13 V nominal voltage, 500 mW power rating, and operating temperature range. This part is Active and carries REACH compliance. However, it is RoHS non-compliant, which may restrict use in applications requiring ROHS3 certification. The impedance specification (200 Ohms) is significantly higher than the main part. The package form factor is DO-213AA.

Frequently Asked Questions (FAQ)

Q: Can the TLZ13C-GS18 directly replace the VLZ13C-GS18 without circuit modification?

A: The TLZ13C-GS18 maintains electrical equivalence across all critical parameters: 13 V nominal Zener voltage (within the 13.33 V specification), 500 mW power rating, 14 Ohms impedance, and -65°C to 175°C operating temperature. The primary consideration is the package form factor change from SOD-80 QuadroMELF to SOD-80 MiniMELF, which requires PCB footprint verification for mechanical and thermal compatibility.

Q: What is the significance of the impedance difference between the main part and 1N4107UR-1?

A: The impedance (Zzt) specification of 200 Ohms for the 1N4107UR-1 is substantially higher than the 14 Ohms of the VLZ13C-GS18. This parameter affects voltage regulation stability and transient response. Applications requiring low impedance for precise voltage regulation should prioritize the TLZ13C-GS18 or 1N964BUR-1.

Q: Why is the reverse leakage current specification different across the substitute parts?

A: Reverse leakage current varies by manufacturer process and measurement conditions. The VLZ13C-GS18 specifies 40 µA @ 12.3 V, while the TLZ13C-GS18 specifies 40 nA @ 12.3 V (three orders of magnitude lower). The 1N964BUR-1 specifies 500 nA @ 9.9 V. These differences reflect manufacturing technology variations and do not preclude substitution for most applications, but high-impedance or low-current circuits should account for these variations.

Q: What are the package compatibility considerations?

A: The VLZ13C-GS18 uses SOD-80 QuadroMELF packaging. The TLZ13C-GS18 uses SOD-80 MiniMELF, and both 1N4107UR-1 and 1N964BUR-1 use DO-213AA packaging. These represent different physical footprints and lead configurations. PCB layout and assembly equipment compatibility must be evaluated before substitution.

Q: Is the RoHS non-compliance of the 1N4107UR-1 a barrier to substitution?

A: RoHS compliance status depends on application requirements and regulatory jurisdiction. The 1N4107UR-1 is RoHS non-compliant, while the VLZ13C-GS18, TLZ13C-GS18, and 1N964BUR-1 are ROHS3 compliant. Applications subject to RoHS regulations must use compliant alternatives.

Q: What is the difference between the Vishay and Microchip substitute options?

A: The TLZ13C-GS18 (Vishay) is the closest electrical equivalent with identical impedance and reverse leakage specifications. The Microchip alternatives (1N964BUR-1 and 1N4107UR-1) offer Active product status and alternative sourcing but introduce variations in impedance and leakage current. Selection depends on supply chain requirements, regulatory compliance, and circuit performance specifications.

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