TLZ33A-GS08 Equivalent & Substitute Parts

Part Overview

The TLZ33A-GS08 is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 33 V nominal Zener voltage with 500 mW maximum power dissipation in a surface mount SOD-80 MiniMELF package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	33	V
Power - Max	500	mW
Impedance (Max)	65	Ohms
Current - Reverse Leakage @ Vr	40 nA @ 28.2 V	nA
Voltage - Forward (Max) @ If	1.5 V @ 200 mA	V
Operating Temperature Range	-65 to 175	°C
Mounting Type	Surface Mount	—
Package / Case	DO-213AC, MINI-MELF, SOD-80	—
Moisture Sensitivity Level	1 (Unlimited)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the TLZ33A-GS08 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

Zener voltage rating within acceptable tolerance of 33 V nominal
Maximum power dissipation of 500 mW or greater
Surface mount package compatibility (SOD-80, DO-213AC, MINI-MELF)
Operating temperature range that encompasses or exceeds -65°C to 175°C
Moisture sensitivity level of 1 (Unlimited) or equivalent
RoHS3 compliance or equivalent environmental certification

Substitute Parts Identified:

CLL5257B TR PBFREE (Central Semiconductor Corp) — Exact Zener voltage match at 33 V, identical power rating of 500 mW, compatible SOD-80 package, extended operating temperature to 200°C, RoHS3 compliant.
BZV55-B30,115 (NXP Semiconductors) — Zener voltage of 30 V (within typical circuit tolerance for 33 V applications), identical power rating of 500 mW, compatible MINI-MELF package, extended operating temperature to 200°C, RoHS3 equivalent compliance.

Parameter Comparison

Parameter	TLZ33A-GS08 (Main)	CLL5257B TR PBFREE	BZV55-B30,115
Manufacturer	Vishay General Semiconductor	Central Semiconductor Corp	NXP Semiconductors
Voltage - Zener (Nom)	33 V	33 V	30 V
Tolerance	—	±5%	±2%
Power - Max	500 mW	500 mW	500 mW
Impedance (Max)	65 Ohms	58 Ohms	80 Ohms
Current - Reverse Leakage @ Vr	40 nA @ 28.2 V	100 nA @ 25 V	50 nA @ 700 mV
Voltage - Forward (Max) @ If	1.5 V @ 200 mA	1.25 V @ 200 mA	900 mV @ 10 mA
Operating Temperature Range	-65 to 175°C	-65 to 200°C	-65 to 200°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	REACH Unaffected

Engineering Selection Recommendations

CLL5257B TR PBFREE is the primary substitute for TLZ33A-GS08. Both components share identical Zener voltage (33 V), power rating (500 mW), and package specifications (SOD-80). The CLL5257B provides extended operating temperature capability to 200°C and maintains RoHS3 compliance. Impedance and reverse leakage characteristics are comparable within normal circuit tolerances.

BZV55-B30,115 serves as an alternative substitute when 30 V Zener voltage is acceptable within circuit design parameters. This NXP component maintains identical power dissipation (500 mW) and package compatibility. The 3 V difference in nominal Zener voltage (30 V versus 33 V) represents a 9% deviation and must be evaluated against specific circuit voltage regulation requirements. The BZV55-B30,115 offers superior impedance characteristics (80 Ohms maximum) and extended temperature range to 200°C.

All substitute parts maintain surface mount compatibility, unlimited moisture sensitivity classification, and compliance with environmental regulations applicable to the original component.

Frequently Asked Questions (FAQ)

Q: Can CLL5257B TR PBFREE be used as a direct replacement for TLZ33A-GS08?

A: Yes. Both components are rated at 33 V nominal Zener voltage, 500 mW maximum power, and utilize the SOD-80 MiniMELF package. Electrical and mechanical parameters are compatible for direct substitution in circuit applications.

Q: What is the significance of the 3 V difference between TLZ33A-GS08 (33 V) and BZV55-B30,115 (30 V)?

A: The BZV55-B30,115 operates at 30 V nominal Zener voltage, representing a 9% reduction from the 33 V specification. This substitute is applicable only when circuit design tolerates this voltage deviation. Applications requiring precise 33 V regulation should use CLL5257B TR PBFREE or the original TLZ33A-GS08.

Q: Are all substitute parts available in the same package format?

A: Yes. TLZ33A-GS08, CLL5257B TR PBFREE, and BZV55-B30,115 are all available in DO-213AC, MINI-MELF, SOD-80 surface mount packages, ensuring mechanical compatibility in PCB layouts.

Q: Do the substitute parts meet the same environmental compliance standards?

A: Yes. CLL5257B TR PBFREE is RoHS3 compliant, matching the original component. BZV55-B30,115 is REACH Unaffected, meeting equivalent environmental standards. All parts maintain Moisture Sensitivity Level 1 (Unlimited).

Q: What are the key differences in impedance between these components?

A: TLZ33A-GS08 specifies 65 Ohms maximum impedance, CLL5257B TR PBFREE specifies 58 Ohms, and BZV55-B30,115 specifies 80 Ohms. These variations fall within normal Zener diode performance ranges and do not preclude substitution in standard voltage regulation applications.

Q: Which substitute part offers the widest operating temperature range?

A: Both CLL5257B TR PBFREE and BZV55-B30,115 extend the operating temperature range to -65°C to 200°C, compared to the original TLZ33A-GS08 specification of -65°C to 175°C. This provides additional thermal margin in high-temperature applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message