CZ5337C TR Equivalent & Substitute Parts

Part Overview

The CZ5337C TR is a 4.7 V, 5 W Zener diode manufactured by Central Semiconductor Corp in DO-201 through-hole axial packaging. This component is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement. The part operates across a temperature range of -65°C to 200°C and features ±2% voltage tolerance with a maximum impedance of 2 Ohms.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	4.7 V
Power - Max	5 W
Impedance (Max)	2 Ohms
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A
Operating Temperature Range	-65°C ~ 200°C
Mounting Type	Through Hole
Package / Case	DO-201AA, DO-27, Axial
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CZ5337C TR is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 4.7 V nominal
Power dissipation: 5 W maximum
Impedance: 2 Ohms maximum
Forward voltage: 1.2 V maximum at 1 A
Operating temperature range: -65°C to 200°C
Mounting configuration: Through-hole axial

The 1N5337BRLG manufactured by onsemi meets all primary electrical specifications and operates within the required temperature range. Both components share identical zener voltage, power rating, impedance, and forward voltage characteristics. The substitute maintains through-hole axial mounting compatibility, ensuring mechanical and electrical interchangeability in circuit applications.

Parameter Comparison

Parameter	CZ5337C TR (Main Part)	1N5337BRLG (Substitute)	Match Status
Voltage - Zener (Nom)	4.7 V	4.7 V	Identical
Power - Max	5 W	5 W	Identical
Impedance (Max)	2 Ohms	2 Ohms	Identical
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.2 V @ 1 A	Identical
Operating Temperature Range	-65°C ~ 200°C	-65°C ~ 200°C	Identical
Mounting Type	Through Hole	Through Hole	Identical
Package / Case	DO-201AA, DO-27, Axial	T-18, Axial	Compatible
Tolerance	±2%	±5%	Substitute has wider tolerance
Current - Reverse Leakage @ Vr	10 µA @ 1 V	5 µA @ 1 V	Substitute has lower leakage
Product Status	Obsolete	Active	Substitute is currently manufactured

Engineering Selection Recommendations

The 1N5337BRLG is the designated manufacturer-recommended substitute for the CZ5337C TR. Selection of this substitute is based on the following engineering factors:

Product Status: The CZ5337C TR is obsolete, while the 1N5337BRLG is active and currently manufactured by onsemi, ensuring long-term availability and supply chain continuity.

Electrical Equivalence: All critical electrical parameters match or exceed the original specification. The substitute maintains identical zener voltage, power rating, impedance, and forward voltage characteristics.

Compliance and Certifications: The 1N5337BRLG is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components. Both parts share the same ECCN (EAR99) and HTSUS classification (8541.10.0050).

Packaging Compatibility: Both components utilize through-hole axial mounting in compatible package formats (DO-201AA/DO-27 versus T-18 axial), allowing direct circuit board substitution without layout modifications.

Performance Characteristics: The substitute exhibits lower reverse leakage current (5 µA versus 10 µA at 1 V), representing improved performance. The wider tolerance specification (±5% versus ±2%) remains within acceptable limits for typical zener diode applications.

Frequently Asked Questions (FAQ)

Q: Can the 1N5337BRLG directly replace the CZ5337C TR in existing circuit designs?

A: Yes. The 1N5337BRLG meets all electrical specifications of the CZ5337C TR, including zener voltage, power dissipation, impedance, and operating temperature range. Both components are through-hole axial devices, enabling direct substitution without circuit modification.

Q: What is the difference in voltage tolerance between these parts?

A: The CZ5337C TR specifies ±2% tolerance, while the 1N5337BRLG specifies ±5% tolerance. Both tolerances are acceptable for standard zener diode applications. Circuit designs requiring tighter voltage regulation should account for the wider tolerance of the substitute during analysis.

Q: Are there packaging differences between the main part and substitute?

A: Both components use through-hole axial packaging. The CZ5337C TR is specified as DO-201AA/DO-27, while the 1N5337BRLG uses T-18 axial packaging. These formats are mechanically and electrically compatible for circuit board installation.

Q: Why is the CZ5337C TR obsolete?

A: The CZ5337C TR is classified as obsolete by the manufacturer. The 1N5337BRLG, manufactured by onsemi, is the active equivalent that provides continued availability and support for this zener voltage and power rating specification.

Q: Does the 1N5337BRLG meet current regulatory standards?

A: Yes. The 1N5337BRLG is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement and use.

Q: What is the reverse leakage current difference?

A: The CZ5337C TR specifies 10 µA reverse leakage at 1 V, while the 1N5337BRLG specifies 5 µA at 1 V. The substitute exhibits lower leakage, which may improve circuit performance in applications sensitive to reverse current.

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