TZMC10GS18 Equivalent & Substitute Parts

Part Overview

The TZMC10GS18 is an automotive-grade Zener diode rated at 10 V nominal with 500 mW power dissipation in a surface mount SOD-80 MiniMELF package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is qualified to AEC-Q101 automotive standards and carries Active product status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, packaging format preferences, or design revision requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	10	V
Tolerance	±5%	—
Power - Maximum	500	mW
Impedance (Maximum)	15	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 7.5 V	—
Voltage - Forward (Maximum) @ 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	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the TZMC10GS18 is determined by the following critical parameters:

Electrical Equivalence Criteria:

Zener voltage: 10 V nominal
Power rating: 500 mW maximum
Package type: SOD-80 MiniMELF (DO-213AC)
Surface mount configuration

Tolerance and Performance Considerations: Substitute parts must maintain the same zener voltage specification (10 V) and power dissipation capability (500 mW). Tolerance variations (±2% versus ±5%) represent tighter or equivalent voltage regulation characteristics and do not preclude substitution. Impedance, reverse leakage current, and forward voltage specifications must remain within acceptable ranges for the application.

Compliance and Grade Requirements: The TZMC10GS18 operates under automotive-grade specifications with AEC-Q101 qualification. Substitute parts identified in this reference maintain equivalent or superior compliance status, ensuring suitability for automotive applications.

Packaging Format: All identified substitutes utilize the SOD-80 MiniMELF package in surface mount configuration, ensuring mechanical and thermal compatibility with existing PCB layouts.

Parameter Comparison

Parameter	TZMC10GS18	TZMB10-GS08	TZMB10-GS18	CLL5240B TR PBFREE
Manufacturer	Vishay	Vishay	Vishay	Central Semiconductor
Voltage - Zener (Nom)	10 V	10 V	10 V	10 V
Tolerance	±5%	±2%	±2%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	15 Ohms	15 Ohms	15 Ohms	17 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 7.5 V	100 nA @ 7.5 V	100 nA @ 7.5 V	3 µA @ 8 V
Voltage - Forward (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.25 V @ 200 mA
Operating Temperature	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 200°C
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Grade	Automotive	Automotive	Automotive	—
Qualification	AEC-Q101	AEC-Q101	AEC-Q101	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Cut Tape (CT)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Vishay TZMB10-GS08 and TZMB10-GS18: These Vishay parts maintain full electrical and mechanical compatibility with the TZMC10GS18. Both are AEC-Q101 qualified automotive-grade components with identical zener voltage (10 V), power rating (500 mW), and package configuration (SOD-80 MiniMELF). The TZMB10 series offers tighter tolerance specifications (±2% versus ±5%), providing enhanced voltage regulation precision. The primary distinction between TZMB10-GS08 and TZMB10-GS18 is packaging format: GS08 is supplied in Cut Tape and Digi-Reel formats, while GS18 is supplied in Tape & Reel format. Selection between these variants depends on assembly line requirements and tape reel compatibility.

Central Semiconductor CLL5240B TR PBFREE: This part provides electrical equivalence with the TZMC10GS18 across all critical parameters: 10 V zener voltage, 500 mW power dissipation, and SOD-80 MiniMELF package. The CLL5240B exhibits superior forward voltage characteristics (1.25 V versus 1.5 V at 200 mA) and extended operating temperature range (-65 to 200°C versus -65 to 175°C). Impedance is marginally higher at 17 Ohms compared to 15 Ohms. Reverse leakage current is higher at 3 µA @ 8 V relative to 100 nA @ 7.5 V, which may be significant in low-leakage applications. The CLL5240B is ROHS3 compliant but does not carry automotive-grade or AEC-Q101 qualification. This part is suitable for non-automotive applications or where automotive qualification is not required.

Frequently Asked Questions (FAQ)

Q: Can TZMB10-GS08 and TZMB10-GS18 be used interchangeably with TZMC10GS18?

A: Yes. Both TZMB10 variants are direct electrical and mechanical substitutes. They share identical zener voltage (10 V), power rating (500 mW), operating temperature range (-65 to 175°C), and SOD-80 MiniMELF package configuration. Both are AEC-Q101 qualified automotive-grade components. The only differences are packaging format (Cut Tape/Digi-Reel versus Tape & Reel) and tolerance specification (±2% versus ±5%). Selection depends on assembly equipment compatibility and voltage regulation requirements.

Q: Is the CLL5240B TR PBFREE suitable for automotive applications?

A: The CLL5240B TR PBFREE is not automotive-grade and does not carry AEC-Q101 qualification. It is suitable for industrial and consumer applications where automotive qualification is not required. For automotive designs, the Vishay TZMB10-GS08 or TZMB10-GS18 are the appropriate substitutes.

Q: What is the significance of the ±2% tolerance in TZMB10 parts compared to ±5% in TZMC10GS18?

A: Tighter tolerance (±2%) provides more precise zener voltage regulation compared to ±5% tolerance. In applications requiring strict voltage reference accuracy, the TZMB10 series offers superior performance. Both tolerance levels are acceptable substitutes; the selection depends on circuit design requirements for voltage regulation precision.

Q: Are there package compatibility concerns when substituting these parts?

A: No. All identified substitutes use the SOD-80 MiniMELF package (DO-213AC) in surface mount configuration. Mechanical footprint, thermal characteristics, and PCB assembly compatibility are identical across all parts in this reference.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Tape & Reel are supply format variations of the same component. Cut Tape (CT) is supplied in shorter tape segments suitable for manual or small-scale assembly. Tape & Reel (TR) is supplied on continuous reels for high-volume automated assembly. The electrical and mechanical specifications of the component are identical; selection depends on production volume and assembly equipment configuration.

Q: How does reverse leakage current affect substitution decisions?

A: The TZMC10GS18 and TZMB10 series specify 100 nA @ 7.5 V reverse leakage. The CLL5240B specifies 3 µA @ 8 V, which is significantly higher. In applications with strict leakage current requirements (such as precision analog circuits or high-impedance signal paths), the lower leakage of Vishay parts is preferable. For general voltage regulation applications, the CLL5240B leakage is acceptable.

Q: Can the CLL5240B be used in place of TZMC10GS18 in existing automotive designs?

A: Direct substitution is not recommended for automotive applications. The TZMC10GS18 is AEC-Q101 qualified automotive-grade; the CLL5240B is not. Automotive designs require components meeting automotive qualification standards. Use TZMB10-GS08 or TZMB10-GS18 for automotive applications.

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