TZX16C-TR Equivalent & Substitute Parts Reference

Part Overview

The Vishay General Semiconductor TZX16C-TR is a Zener diode with a nominal Zener voltage of 16 V, maximum power dissipation of 500 mW, and axial DO-204AH (DO-35) through-hole package. Its automotive grade and AEC-Q101 qualification make it suitable for high-reliability automotive applications. Component alternatives are required due to considerations such as inventory constraints, compliance requirements, or sourcing needs. Qualified substitutes must meet the same key electrical and mechanical criteria as outlined below.

Key Parameters

Parameter	TZX16C-TR Value
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Diodes, Zener
Voltage - Zener (Nom) (Vz)	16 V
Power - Max	500 mW
Impedance (Max) (Zzt)	45 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 16 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 175°C
Grade / Qualification	Automotive / AEC-Q101
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution is based strictly on matching the following parameters:

Zener voltage (Nom)
Maximum power dissipation
Impedance (Max)
Reverse leakage current
Forward voltage (Max) @ specified forward current
Operating temperature range
Through-hole mounting and DO-204AH (DO-35) package
Product status (active)
RoHS and other compliance details (when specified)

These parameters ensure both electrical equivalence and physical compatibility within the Diodes, Zener category.

Parameter Comparison

Part Number	Voltage - Zener (Nom) (Vz)	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	RoHS Status	Product Status
TZX16C-TR	16 V	500 mW	45 Ohms	1 µA @ 16 V	1.5 V @ 200 mA	-65°C ~ 175°C	Through Hole	DO-204AH, DO-35, Axial	ROHS3 Compliant	Active
1N5246B	16 V	500 mW	17 Ohms	100 nA @ 12 V	1.5 V @ 200 mA	-65°C ~ 175°C (TJ)	Through Hole	DO-204AH, DO-35, Axial	RoHS non-compliant	Active
BZX79C16-T50A	16 V	500 mW	40 Ohms	50 nA @ 11.2 V	1.5 V @ 100 mA	-65°C ~ 200°C	Through Hole	DO-204AH, DO-35, Axial	ROHS3 Compliant	Active
NZX16C,133	16.7 V	500 mW	45 Ohms	50 nA @ 11.2 V	1.5 V @ 200 mA	-55°C ~ 175°C	Through Hole	DO-204AH, DO-35, Axial	ROHS3 Compliant	Active

Engineering Selection Recommendations

Selection should be based on matching parameters, product status, and compliance certifications. TZX16C-TR, BZX79C16-T50A, and NZX16C,133 are ROHS3 compliant and active. 1N5246B is active but RoHS non-compliant. Where RoHS compliance is mandatory, select only ROHS3 compliant parts. For applications requiring automotive grade and specific qualification, confirm manufacturer compliance to AEC-Q101 if specified in the documentation.

Frequently Asked Questions (FAQ)

Q1: What electrical parameters are critical when selecting a Zener diode substitute?
A1: Nominal Zener voltage, maximum power rating, impedance, reverse leakage current, forward voltage, and operating temperature must all match the main part.

Q2: How does package type affect compatibility?
A2: All shown substitutes use DO-204AH (DO-35) axial through-hole packages, ensuring direct mechanical compatibility.

Q3: Is RoHS status important for replacement?
A3: Use only ROHS3 compliant alternatives for assemblies requiring hazardous substance restrictions.

Q4: Are all listed substitutes currently active?
A4: Yes, all alternatives are listed as active in the provided input.

Q5: How do certification and automotive grade status influence substitution?
A5: For automotive applications or where AEC-Q101 qualification is required, select only substitutes with the same certifications as noted in the input parameters.

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