VLZ5V6C-GS18 Equivalent & Substitute Parts

Part Overview

The VLZ5V6C-GS18 is a Zener Diode rated at 5.76 V, 500 mW, manufactured by Vishay General Semiconductor - Diodes Division in SOD-80 QuadroMELF surface mount package. This part is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement. The part carries AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts must maintain functional equivalence within the specified electrical and mechanical parameters while accommodating the obsolete status of the original component.

Substiute Parts

VLZ5V6C-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1037VLZ5V6C-GS18 Datasheet

Current PartRFQ

TLZ5V6C-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 997TLZ5V6C-GS18 Datasheet

DirectRFQ

1N4626UR-1

Microchip TechnologyIn Stock: 9121N4626UR-1 Datasheet

MFR RecommendedRFQ

1N5524DUR-1

Microchip TechnologyIn Stock: 7361N5524DUR-1 Datasheet

MFR RecommendedRFQ

1N752AUR-1

Microchip TechnologyIn Stock: 9631N752AUR-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the VLZ5V6C-GS18 is based on the following critical parameters:

Primary Substitution Criteria:

• Zener voltage nominal rating within the 5.6 V to 5.76 V range
• Power dissipation rating of 500 mW
• Surface mount mounting type
• Operating temperature range of -65°C to 175°C
• RoHS3 compliance status

Secondary Compatibility Factors:

• Package form factor (SOD-80 variants including MiniMELF and DO-213AA acceptable)
• Impedance characteristics (Zzt parameter)
• Reverse leakage current specifications
• Forward voltage characteristics

Substitute parts are grouped into two categories:

Category 1 - Direct Vishay Equivalent: TLZ5V6C-GS18 maintains identical electrical specifications with nominal Zener voltage of 5.6 V and operates within the same temperature range. This part is Active status and uses SOD-80 MiniMELF packaging, a recognized variant of the original SOD-80 QuadroMELF form factor.

Category 2 - Cross-Manufacturer Alternatives: 1N4626UR-1, 1N5524DUR-1, and 1N752AUR-1 (all Microchip Technology) provide functional equivalence with 5.6 V nominal Zener voltage and 500 mW power rating. These parts use DO-213AA packaging and maintain the required operating temperature range. Electrical parameter variations exist in impedance, tolerance, and leakage current specifications as detailed in the comparison table.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TLZ5V6C-GS18

The TLZ5V6C-GS18 is the preferred substitute for VLZ5V6C-GS18. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical specifications including 500 mW power rating, 13 Ohms maximum impedance, and -65°C to 175°C operating temperature range. The TLZ5V6C-GS18 is Active status, ensuring long-term availability. The SOD-80 MiniMELF package is a recognized variant within the SOD-80 family and maintains mechanical compatibility for surface mount applications. ROHS3 compliance is maintained.

Secondary Recommendations: Microchip Technology Alternatives

The 1N5524DUR-1 provides the closest electrical match among Microchip alternatives, with ±1% tolerance, 30 Ohms impedance, and 2 µA reverse leakage current. This part maintains ROHS3 compliance status and Active product status. The DO-213AA package requires PCB layout verification for mechanical fit.

The 1N4626UR-1 and 1N752AUR-1 are functionally equivalent with 5.6 V nominal rating and 500 mW power dissipation. The 1N752AUR-1 exhibits RoHS non-compliance and should be avoided in applications requiring regulatory compliance. The 1N4626UR-1 presents higher impedance (1400 Ohms) compared to the original specification and may introduce circuit performance variations.

Compliance Considerations:

Applications requiring automotive qualification (AEC-Q101) should prioritize TLZ5V6C-GS18. Applications with RoHS compliance mandates should exclude 1N752AUR-1. All recommended substitutes maintain the -65°C to 175°C operating temperature range required for automotive and industrial applications.

Frequently Asked Questions (FAQ)

Q1: Can TLZ5V6C-GS18 directly replace VLZ5V6C-GS18 without circuit modification?

A: Yes. Both parts share identical electrical specifications: 5.6 V nominal Zener voltage (VLZ5V6C-GS18 is 5.76 V, within acceptable tolerance), 500 mW power rating, 13 Ohms impedance, and -65°C to 175°C operating temperature. The SOD-80 MiniMELF package is mechanically compatible with SOD-80 QuadroMELF footprints in standard surface mount applications. No circuit modification is required.

Q2: What is the primary difference between TLZ5V6C-GS18 and the Microchip alternatives?

A: TLZ5V6C-GS18 maintains Vishay manufacturing and identical impedance (13 Ohms). Microchip alternatives vary in impedance: 1N5524DUR-1 (30 Ohms), 1N4626UR-1 (1400 Ohms), and 1N752AUR-1 (8 Ohms). Impedance affects voltage regulation characteristics and transient response. The 1N4626UR-1 impedance of 1400 Ohms represents a significant deviation and may alter circuit performance in precision voltage regulation applications.

Q3: Are the DO-213AA packaged parts (Microchip alternatives) mechanically compatible with the original SOD-80 footprint?

A: No. DO-213AA and SOD-80 are distinct package form factors with different physical dimensions and lead configurations. PCB layout modification is required when substituting with Microchip alternatives. Verify footprint compatibility with your PCB design before implementation.

Q4: Which substitute part is recommended for automotive applications requiring AEC-Q101 qualification?

A: TLZ5V6C-GS18 is the only substitute listed with automotive-grade specifications. Microchip alternatives do not specify AEC-Q101 qualification. For applications with automotive qualification requirements, TLZ5V6C-GS18 is the appropriate selection.

Q5: What is the impact of tolerance differences among substitute parts?

A: VLZ5V6C-GS18 and TLZ5V6C-GS18 do not specify tolerance values. Microchip alternatives specify ±5% (1N4626UR-1, 1N752AUR-1) or ±1% (1N5524DUR-1). Tighter tolerance (±1%) provides more precise voltage regulation. Applications requiring voltage regulation within ±5% or tighter should select 1N5524DUR-1 among Microchip options.

Q6: Is RoHS compliance maintained across all substitute options?

A: No. TLZ5V6C-GS18 and 1N4626UR-1 maintain ROHS3 compliance. 1N5524DUR-1 does not specify RoHS status. 1N752AUR-1 is explicitly RoHS non-compliant. Applications subject to RoHS regulations should use TLZ5V6C-GS18 or 1N4626UR-1.

Q7: How do reverse leakage current specifications affect part selection?

A: Reverse leakage current determines off-state performance. VLZ5V6C-GS18 specifies 1 µA @ 2 V. TLZ5V6C-GS18 matches this specification. Microchip alternatives range from 2 µA to 5 µA at different voltage points. Higher leakage current increases power dissipation in reverse bias conditions. Applications with stringent leakage requirements should prioritize TLZ5V6C-GS18 or 1N5524DUR-1 (2 µA @ 3.5 V).

Q8: What forward voltage differences exist among substitute parts?

A: VLZ5V6C-GS18 and TLZ5V6C-GS18 specify 1.5 V maximum forward voltage @ 200 mA. All Microchip alternatives specify 1.1 V @ 200 mA. Lower forward voltage in Microchip parts reduces forward bias power dissipation. This difference is significant in applications where the diode conducts in forward bias mode.