TZX36C-TR Equivalent & Substitute Parts

Part Overview

The TZX36C-TR is an active-status zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 36 V nominal zener voltage with 500 mW maximum power dissipation. The device is packaged in DO-204AH (DO-35) axial through-hole configuration and is qualified to AEC-Q101 automotive standards with ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the critical parameters that define zener diode functionality: nominal zener voltage, maximum power rating, impedance characteristics, and through-hole mounting compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	36	V
Power - Max	500	mW
Impedance (Max)	140	Ohms
Voltage - Forward (Max) @ If	1.5 V @ 200 mA	V
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—
Operating Temperature Range	-65°C to 175°C	°C

Substitute Part Grouping Explanation

Substitution eligibility for the TZX36C-TR is determined by the following critical parameters:

Nominal Zener Voltage: 36 V (exact match required)
Maximum Power Dissipation: 500 mW (exact match required)
Impedance (Max): 140 Ohms (exact match required)
Forward Voltage: 1.5 V @ 200 mA (exact match required)
Mounting Configuration: Through Hole, axial package (DO-35 compatible)
Package Compatibility: DO-204AH / DO-35 form factor

The NZX36C,133 manufactured by NXP USA Inc. meets all critical electrical parameters and maintains mechanical compatibility through identical through-hole axial packaging. Both devices operate within overlapping temperature ranges and share equivalent functional characteristics for zener regulation applications.

Parameter Comparison

Parameter	TZX36C-TR (Vishay)	NZX36C,133 (NXP)	Match Status
Voltage - Zener (Nom)	36 V	36 V	Equivalent
Tolerance	—	±2%	NXP specified
Power - Max	500 mW	500 mW	Equivalent
Impedance (Max)	140 Ohms	140 Ohms	Equivalent
Current - Reverse Leakage @ Vr	1 µA @ 27 V	50 nA @ 25.2 V	NXP lower leakage
Voltage - Forward (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	Equivalent
Operating Temperature	-65°C to 175°C	-55°C to 175°C	NXP range narrower at low end
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	Equivalent
Product Status	Active	Active	Both active

Engineering Selection Recommendations

Both the TZX36C-TR and NZX36C,133 are active-status products with equivalent electrical specifications for 36 V zener regulation at 500 mW power dissipation. Selection between these devices is based on application-specific requirements:

TZX36C-TR (Vishay) is qualified to AEC-Q101 automotive standards and operates across the extended low-temperature range of -65°C to 175°C. This device is appropriate for automotive and extended-temperature industrial applications requiring formal automotive qualification.

NZX36C,133 (NXP) provides equivalent electrical performance with specified ±2% tolerance and operates across -55°C to 175°C. The lower reverse leakage current (50 nA @ 25.2 V versus 1 µA @ 27 V) may provide performance advantages in low-leakage applications. This device is suitable for general industrial and commercial applications where the narrower low-temperature range is acceptable.

Both devices are ROHS3 compliant and share identical ECCN and HTSUS classifications. Mechanical interchangeability is confirmed through identical DO-35 axial through-hole packaging.

Frequently Asked Questions (FAQ)

Q: Can the NZX36C,133 directly replace the TZX36C-TR in automotive applications?

A: Electrical substitution is valid based on matched zener voltage, power rating, impedance, and forward voltage specifications. However, the TZX36C-TR carries AEC-Q101 automotive qualification while the NZX36C,133 does not. Automotive applications requiring formal qualification documentation must use the TZX36C-TR.

Q: What is the significance of the ±2% tolerance specification on the NZX36C,133?

A: The NZX36C,133 specifies ±2% zener voltage tolerance, providing tighter voltage regulation characteristics. The TZX36C-TR does not specify a tolerance value in the provided data. Both devices maintain the same 36 V nominal zener voltage and are electrically equivalent for standard regulation applications.

Q: Are the operating temperature ranges compatible?

A: The TZX36C-TR operates from -65°C to 175°C, while the NZX36C,133 operates from -55°C to 175°C. The NXP device has a narrower low-temperature range. Applications requiring operation below -55°C must use the TZX36C-TR.

Q: Is the difference in reverse leakage current significant?

A: The NZX36C,133 exhibits lower reverse leakage (50 nA @ 25.2 V) compared to the TZX36C-TR (1 µA @ 27 V). For applications sensitive to leakage current, the NXP device provides superior performance. For standard zener regulation, both specifications are acceptable.

Q: Are the packages mechanically identical?

A: Yes. Both devices use DO-204AH (DO-35) axial through-hole packaging. Mechanical interchangeability is confirmed for PCB mounting and circuit board layout purposes.

Q: What is the inventory status for each part?

A: The TZX36C-TR has 930 pieces in stock. The NZX36C,133 has 18,062 pieces in stock. Availability considerations may influence selection for high-volume production requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message