Equivalent & Substitute Parts Reference: TZX22B-TR

Part Overview

The TZX22B-TR is a Zener diode produced by Vishay General Semiconductor - Diodes Division, categorized under Diodes, Zener. It features a nominal Zener voltage of 22 V, a maximum power dissipation of 500 mW, and is housed in a DO-204AH (DO-35) axial through-hole package. The part holds automotive grade qualification (AEC-Q101), is RoHS3 compliant, and is actively available with inventory stock. Alternative models are necessary in cases where inventory demands, multi-vendor sourcing strategies, or supply chain continuity require functional equivalents that match strict electrical and mechanical parameters.

Key Parameters

Parameter	TZX22B-TR
Category	Diodes, Zener
Voltage - Zener (Nom)	22 V
Power - Max	500 mW
Impedance (Max)	65 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 17 V
Voltage - Forward (Max) @ If	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 175°C
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial
RoHS Status	ROHS3 Compliant
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitute parts listed for the TZX22B-TR have been selected strictly on the basis of matching electrical and mechanical parameters. These include Zener voltage, maximum power dissipation, maximum impedance, reverse leakage current, forward voltage, operating temperature range, mounting type, package form factor, and compliance standards. A part is considered a valid substitute only if all specified parameters align within the provided tolerances and package design, with documented compliance and qualification statuses.

Parameter Comparison

Parameter	TZX22B-TR	NZX22B,133
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom)	22 V	22.1 V
Power - Max	500 mW	500 mW
Impedance (Max)	65 Ohms	65 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 17 V	50 nA @ 15.4 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 175°C	-55°C ~ 175°C
Mounting Type	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
RoHS Status	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both TZX22B-TR and NZX22B,133 are active status products, RoHS3 compliant, and are qualified for automotive applications as per the parameters provided. The substitute part, NZX22B,133, matches on all documented compliance and qualification standards. Selection can be made on the basis of documented active status and equivalent compliance certifications.

Frequently Asked Questions (FAQ)

Q1: What are the key parameters for substituting a Zener diode in this category?
A1: Key parameters include nominal Zener voltage, maximum power dissipation, maximum impedance, reverse leakage current, forward voltage at rated current, operating temperature range, mounting type, package/case format, RoHS status, and qualification standard.

Q2: Is NZX22B,133 a direct drop-in for TZX22B-TR based on the provided data?
A2: NZX22B,133 matches the electrical and mechanical characteristics specified for TZX22B-TR, including voltage, power, impedance, package, and compliance parameters.

Q3: Are the package formats identical for both parts?
A3: Both parts are specified with DO-204AH, DO-35 axial through-hole packages, supporting direct mechanical compatibility.

Q4: Are both part numbers suitable for automotive grade applications?
A4: TZX22B-TR is classified as automotive grade with AEC-Q101 qualification. NZX22B,133 is qualified as active status and matches compliance parameters provided.

Q5: What compliance certifications are provided for these parts?
A5: Both models are RoHS3 compliant and documented with REACH unaffected status, meeting listed environmental requirements.

Q6: How do reverse leakage currents compare between these substitutes?
A6: TZX22B-TR has a reverse leakage of 1 µA @ 17 V, while NZX22B,133 specifies 50 nA @ 15.4 V, both within the specified performance range.

Q7: Are inventory levels available for both options?
A7: According to the provided data, both TZX22B-TR and NZX22B,133 have documented inventory available.

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