Equivalent & Substitute Parts Reference – TZMC22-M-18

Part Overview

The Vishay General Semiconductor TZMC22-M-18 is a 22 V, 500 mW, automotive-grade zener diode in a SOD-80 MiniMELF surface mount package. It features ±5% voltage tolerance, 55 Ohms maximum impedance, and complies with AEC-Q101 qualification, RoHS3, and REACH requirements. The part is listed as Active, with inventory status provided. Alternative part selection is required for supply chain robustness, qualification compatibility, multi-sourcing, and production flexibility.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Voltage - Zener (Nom) (Vz)	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Qualification	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	MSL	REACH Status
TZMC22-M-18	Vishay General Semiconductor	Diodes, Zener	22 V	±5%	500 mW	55 Ohms	100 nA @ 16 V	1.5 V @ 200 mA	-65°C ~ 175°C	AEC-Q101	Surface Mount	DO-213AC, MINI-MELF, SOD-80	SOD-80 MiniMELF	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts are grouped strictly based on parametric equivalence per the following parameters: nominal zener voltage (Vz), voltage tolerance, maximum power rating, maximum impedance (Zzt), reverse leakage current, forward voltage at test current, operating temperature range, mounting type, package/case, qualification, RoHS status, and REACH status. All substitute parts listed match the specified values within category-standard tolerances and package compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Category	Voltage - Zener (Nom) (Vz)	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Qualification	Mounting Type	Package / Case	RoHS Status	REACH Status
TZMC22-M-18	Vishay	Diodes, Zener	22 V	±5%	500 mW	55 Ohms	100 nA @ 16 V	1.5 V @ 200 mA	-65°C ~ 175°C	AEC-Q101	Surface Mount	DO-213AC, SOD-80	ROHS3 Compliant	REACH Unaffected
TZMB22-GS08	Vishay	Diodes, Zener	22 V	±2%	500 mW	55 Ohms	100 nA @ 16 V	1.5 V @ 200 mA	-65°C ~ 175°C	AEC-Q101	Surface Mount	DO-213AC, SOD-80	ROHS3 Compliant	REACH Unaffected
TZMC22-GS08	Vishay	Diodes, Zener	22 V	±5%	500 mW	55 Ohms	100 nA @ 16 V	1.5 V @ 200 mA	-65°C ~ 175°C	AEC-Q101	Surface Mount	DO-213AC, SOD-80	ROHS3 Compliant	REACH Unaffected
CDLL4112	Microchip	Diodes, Zener	18 V	±5%	500 mW	100 Ohms	50 nA @ 13.7 V	1.1 V @ 200 mA	-65°C ~ 175°C	-	Surface Mount	DO-213AB	RoHS non-compliant	REACH Unaffected

Engineering Selection Recommendations

TZMB22-GS08 and TZMC22-GS08 are parametric equivalents to TZMC22-M-18, including automotive qualification and RoHS3 compliance. CDLL4112 presents differences in voltage rating, impedance, and RoHS status. For applications requiring substitution, selected parts should match the necessary voltages, tolerances, package, qualification, and compliance as listed.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting a zener diode in the SOD-80 package?
A1: Voltage - Zener (Nom), tolerance, maximum power rating, impedance, reverse leakage, forward voltage, operating temperature, qualification (if required), mounting type, package/case, and environmental compliance.

Q2: Does package equivalence ensure drop-in functional compatibility?
A2: Matching the package (e.g., DO-213AC, SOD-80) and mounting type supports direct substitution in PCB layouts.

Q3: What distinguishes TZMB22-GS08 from TZMC22-M-18?
A3: TZMB22-GS08 features a tighter voltage tolerance (±2%), all other electrical and mechanical parameters remain equivalent.

Q4: Are non-RoHS substitutes suitable for all environments?
A4: RoHS status must be considered for environmental compliance; non-RoHS parts (e.g., CDLL4112) are not compliant for restricted applications.

Q5: When is automotive qualification necessary?
A5: Applications requiring AEC-Q101 automotive grade should use parts with the stated qualification. Both TZMB22-GS08 and TZMC22-GS08 satisfy this requirement.

Q6: Can CDLL4112 substitute TZMC22-M-18 in all cases?
A6: CDLL4112 differs in zener voltage (18 V vs. 22 V), impedance, and RoHS status, affecting compatibility where these parameters are critical.

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