CZ5378B TR Equivalent & Substitute Parts

Part Overview

The CZ5378B TR is a 100 V, 5 W Zener diode manufactured by Central Semiconductor Corp in DO-201AA axial through-hole packaging. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates across a temperature range of -65°C to 200°C and maintains ±5% voltage tolerance at nominal 100 V Zener voltage.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	100	V
Power - Max	5	W
Tolerance	±5%	-
Impedance (Max)	90	Ohms
Current - Reverse Leakage @ Vr	500 nA @ 76 V	-
Voltage - Forward (Max) @ If	1.2 V @ 1 A	-
Operating Temperature	-65 to 200	°C
Mounting Type	Through Hole	-
Package / Case	DO-201AA, DO-27, Axial	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution eligibility for the CZ5378B TR is determined by strict equivalence across the following electrical and mechanical parameters:

Zener Voltage (Vz): 100 V nominal with ±5% tolerance
Power Dissipation: 5 W maximum rating
Impedance: 90 Ohms maximum
Reverse Leakage Current: 500 nA @ 76 V
Forward Voltage: 1.2 V maximum @ 1 A
Operating Temperature Range: -65°C to 200°C
Mounting Configuration: Through-hole axial package

The 1N5378BRLG manufactured by onsemi meets all specified electrical parameters and maintains compatible through-hole axial packaging. This substitute is classified as active product status, ensuring continued availability and supply chain reliability.

Parameter Comparison

Parameter	CZ5378B TR (Central Semiconductor)	1N5378BRLG (onsemi)	Match Status
Voltage - Zener (Nom)	100 V	100 V	Equivalent
Tolerance	±5%	±5%	Equivalent
Power - Max	5 W	5 W	Equivalent
Impedance (Max)	90 Ohms	90 Ohms	Equivalent
Current - Reverse Leakage @ Vr	500 nA @ 76 V	500 nA @ 76 V	Equivalent
Voltage - Forward (Max) @ If	1.2 V @ 1 A	1.2 V @ 1 A	Equivalent
Operating Temperature	-65°C to 200°C	-65°C to 200°C	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	DO-201AA, DO-27, Axial	T-18, Axial	Compatible
Product Status	Obsolete	Active	Substitute Available
RoHS Status	Not specified	ROHS3 Compliant	Enhanced Compliance

Engineering Selection Recommendations

The 1N5378BRLG is the direct electrical and mechanical equivalent for the obsolete CZ5378B TR. Selection of this substitute is based on:

Product Status: The CZ5378B TR is obsolete, while the 1N5378BRLG maintains active product status with established supply chain availability.

Electrical Equivalence: All critical electrical parameters—Zener voltage, power rating, impedance, leakage current, and forward voltage—are identical between the main part and substitute.

Compliance: The 1N5378BRLG is ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements. Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications.

Packaging Compatibility: Both components utilize through-hole axial configuration suitable for PCB mounting in legacy and current designs.

Temperature Performance: Operating temperature range of -65°C to 200°C is maintained, ensuring thermal performance equivalence across all application environments.

Frequently Asked Questions (FAQ)

Q: Can the 1N5378BRLG directly replace the CZ5378B TR without circuit modification?

A: Yes. The 1N5378BRLG is electrically and mechanically equivalent. All electrical parameters, including Zener voltage, power dissipation, impedance, and temperature range, are identical. Through-hole axial packaging is compatible with existing PCB layouts designed for the CZ5378B TR.

Q: What is the primary reason for substitution?

A: The CZ5378B TR is classified as obsolete. The 1N5378BRLG is an active product with established supply chain availability, ensuring long-term component sourcing for production and maintenance applications.

Q: Are there compliance differences between the two parts?

A: The 1N5378BRLG carries ROHS3 compliance certification, while the CZ5378B TR does not specify RoHS status. Both parts are classified under identical ECCN and HTSUS codes. For applications requiring RoHS compliance, the 1N5378BRLG is the appropriate selection.

Q: Do the package designations differ?

A: The CZ5378B TR is specified as DO-201AA/DO-27 axial, while the 1N5378BRLG is designated T-18 axial. Both are through-hole axial packages with compatible physical dimensions and PCB mounting characteristics.

Q: What is the inventory status of the substitute?

A: The 1N5378BRLG has 3,595 pieces in stock as new original inventory, compared to 1,036 pieces for the obsolete CZ5378B TR. This ensures reliable availability for component procurement.

Q: Are the electrical specifications guaranteed to be identical?

A: Yes. Zener voltage (100 V ±5%), power rating (5 W), impedance (90 Ohms max), reverse leakage current (500 nA @ 76 V), forward voltage (1.2 V @ 1 A), and operating temperature range (-65°C to 200°C) are specified identically for both parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message