TZMB16-GS18 Equivalent & Substitute Parts

Part Overview

The TZMB16-GS18 is a Zener diode rated at 16 V nominal with 500 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component is packaged in SOD-80 MiniMELF format and is qualified to AEC-Q101 automotive standards. The part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative packaging formats (Cut Tape vs. Tape & Reel) and manufacturer sources may be required due to inventory availability, supply chain considerations, or design flexibility requirements.

Substiute Parts

TZMB16-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 4999TZMB16-GS18 Datasheet

Current PartRFQ

TZMB16-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 72717TZMB16-GS08 Datasheet

Parametric EquivalentRFQ

CLL5246B TR PBFREE

Central Semiconductor CorpIn Stock: 3246CLL5246B TR PBFREE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TZMB16-GS18 is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Zener voltage: 16 V nominal
• Power rating: 500 mW maximum
• Reverse leakage current: 100 nA @ 12 V
• Package type: SOD-80 MiniMELF (DO-213AC)
• Surface mount configuration

Tolerance and Performance Considerations: Zener voltage tolerance directly affects circuit performance. The primary part specifies ±2% tolerance. Substitute parts with wider tolerance specifications (±5%) remain functionally compatible but introduce greater voltage variation across the production range.

Packaging Format Distinction: The TZMB16-GS18 is supplied in Tape & Reel (TR) format. The parametric equivalent TZMB16-GS08 is supplied in Cut Tape (CT) & Digi-Reel® format. Both formats contain identical electrical components in the same physical package; the difference is in delivery and handling configuration only.

Manufacturer Substitution: The CLL5246B TR PBFREE from Central Semiconductor Corp meets the core electrical requirements (16 V, 500 mW, SOD-80) but exhibits parameter variations in impedance (17 Ohms vs. 40 Ohms maximum) and forward voltage (1.25 V vs. 1.5 V maximum). These differences remain within acceptable operating margins for most applications while providing extended temperature range capability.

Parameter Comparison

Engineering Selection Recommendations

TZMB16-GS08 (Parametric Equivalent): The TZMB16-GS08 is electrically and mechanically identical to the TZMB16-GS18. The sole distinction is packaging format: Cut Tape & Digi-Reel® versus Tape & Reel. Both parts carry identical electrical specifications, AEC-Q101 qualification, and ROHS3 compliance. Selection between these two is determined by procurement and assembly process requirements rather than electrical performance. The TZMB16-GS08 maintains higher inventory availability (72,700 units in stock).

CLL5246B TR PBFREE (Manufacturer Recommended Substitute): The CLL5246B TR PBFREE from Central Semiconductor Corp satisfies the core functional requirements: 16 V nominal zener voltage, 500 mW power rating, and SOD-80 surface mount package. This part exhibits measurable parameter differences: impedance of 17 Ohms (versus 40 Ohms maximum) and forward voltage of 1.25 V (versus 1.5 V maximum). The CLL5246B also provides extended operating temperature range (−65°C to 200°C versus 175°C maximum). Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating. The CLL5246B is suitable for applications where the tighter impedance specification and lower forward voltage provide circuit advantages, or where extended low-temperature operation is required.

Compliance and Qualification: All three parts maintain ROHS3 compliance and unlimited moisture sensitivity (MSL 1). The TZMB16-GS18 and TZMB16-GS08 carry explicit AEC-Q101 automotive qualification. The CLL5246B does not list AEC-Q101 qualification in the provided parameters. For automotive applications requiring AEC-Q101 certification, the Vishay parts (TZMB16-GS18 or TZMB16-GS08) are the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can TZMB16-GS08 be used as a direct replacement for TZMB16-GS18?

A: Yes. The TZMB16-GS08 and TZMB16-GS18 are electrically and mechanically identical. Both are manufactured by Vishay General Semiconductor, rated at 16 V nominal with 500 mW power dissipation, ±2% tolerance, and packaged in SOD-80 MiniMELF format. The difference is packaging format only: Cut Tape & Digi-Reel® versus Tape & Reel. No circuit redesign or testing is required for substitution.

Q: What are the key differences between the Vishay TZMB16 series and the Central Semiconductor CLL5246B?

A: Both parts share identical zener voltage (16 V) and power rating (500 mW) in the same SOD-80 package. The CLL5246B exhibits lower impedance (17 Ohms maximum versus 40 Ohms) and lower forward voltage (1.25 V versus 1.5 V at 200 mA). The CLL5246B also provides extended operating temperature range (−65°C to 200°C). The TZMB16 series carries AEC-Q101 automotive qualification; the CLL5246B does not list this certification.

Q: Is the CLL5246B suitable for automotive applications?

A: The CLL5246B is not listed with AEC-Q101 qualification in the provided specifications. For applications requiring automotive-grade components with AEC-Q101 certification, the TZMB16-GS18 or TZMB16-GS08 are the appropriate selections.

Q: Does tolerance difference affect circuit compatibility?

A: The TZMB16 series specifies ±2% zener voltage tolerance, while the CLL5246B specifies ±5%. This means the CLL5246B zener voltage can vary between 15.2 V and 16.8 V across the production range, compared to 15.68 V to 16.32 V for the TZMB16 series. Applications with tight voltage regulation requirements should account for this wider tolerance band when selecting the CLL5246B.

Q: Can these parts be used interchangeably in high-temperature applications?

A: The TZMB16-GS18 and TZMB16-GS08 are rated to 175°C maximum operating temperature. The CLL5246B is rated to 200°C maximum. For applications requiring operation above 175°C, the CLL5246B provides additional thermal margin. For applications operating at or below 175°C, all three parts are suitable.

Q: What is the significance of the packaging format difference between TR and CT?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® are delivery and handling formats only. The electronic components themselves are identical. TR format is continuous reel suitable for high-volume automated assembly. CT format is cut tape suitable for lower-volume or manual assembly processes. Selection depends on manufacturing process requirements, not electrical performance.

Q: Are all three parts RoHS compliant?

A: Yes. The TZMB16-GS18, TZMB16-GS08, and CLL5246B TR PBFREE all carry ROHS3 compliance status. All three parts also maintain unlimited moisture sensitivity (MSL 1) and REACH Unaffected status.