PTV18B-E3/84A Equivalent & Substitute Parts

Part Overview

The PTV18B-E3/84A is a Zener diode rated at 19.2 V nominal voltage with 600 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This component is packaged in the DO-220AA (SMP) surface mount configuration and is part of the eSMP® series. The PTV18B-E3/84A is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement continuity. Substitute parts maintain identical electrical specifications and mechanical compatibility while offering active product status and improved availability.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	19.2	V
Tolerance	±6	%
Power - Max	600	mW
Impedance (Max)	12	Ohms
Current - Reverse Leakage @ Vr	10	µA @ 13 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 200 mA
Operating Temperature	150	°C
Package / Case	DO-220AA	SMP
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the PTV18B-E3/84A is based on strict equivalence across all critical electrical and mechanical parameters. The substitute parts PTV18B-M3/84A and PTV18B-M3/85A are classified as direct manufacturer equivalents because they maintain identical specifications in the following key parameters:

Zener voltage: 19.2 V nominal
Voltage tolerance: ±6%
Maximum power dissipation: 600 mW
Maximum impedance: 12 Ohms
Reverse leakage current: 10 µA @ 13 V
Forward voltage: 1.5 V @ 200 mA
Operating temperature: 150°C
Package configuration: DO-220AA (SMP)
Mounting type: Surface Mount
Compliance certifications: ROHS3, REACH Unaffected

The primary distinction between the main part and substitutes is product status (obsolete versus active) and packaging format (individual versus tape & reel). These differences do not affect electrical or mechanical compatibility in circuit applications.

Parameter Comparison

Parameter	PTV18B-E3/84A	PTV18B-M3/84A	PTV18B-M3/85A
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener
Series	eSMP®	eSMP®	eSMP®
Product Status	Obsolete	Active	Active
Voltage - Zener (Nom)	19.2 V	19.2 V	19.2 V
Tolerance	±6%	±6%	±6%
Power - Max	600 mW	600 mW	600 mW
Impedance (Max)	12 Ohms	12 Ohms	12 Ohms
Current - Reverse Leakage @ Vr	10 µA @ 13 V	10 µA @ 13 V	10 µA @ 13 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	150°C	150°C	150°C
Package / Case	DO-220AA	DO-220AA	DO-220AA
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both PTV18B-M3/84A and PTV18B-M3/85A are suitable direct substitutes for the obsolete PTV18B-E3/84A. Selection between these alternatives is determined by procurement and supply chain requirements rather than electrical or mechanical performance criteria.

PTV18B-M3/84A is recommended for applications requiring standard tape & reel packaging with active product status and established supply availability.

PTV18B-M3/85A is recommended for applications requiring tape & reel packaging with active product status and alternative supply chain sourcing.

Both substitute parts maintain full compliance with ROHS3 and REACH regulations. The DO-220AA package configuration ensures direct mechanical compatibility with existing PCB layouts and assembly processes. All three parts operate within identical electrical parameters, supporting seamless circuit-level substitution.

Frequently Asked Questions (FAQ)

Q: Can PTV18B-M3/84A and PTV18B-M3/85A be used interchangeably with PTV18B-E3/84A?

A: Yes. All three parts share identical electrical specifications (19.2 V nominal, 600 mW, ±6% tolerance) and mechanical packaging (DO-220AA surface mount). They are electrically and mechanically interchangeable at the circuit level.

Q: What is the difference between PTV18B-M3/84A and PTV18B-M3/85A?

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. The difference lies in packaging format and supply chain designation. Both are active products from Vishay General Semiconductor - Diodes Division.

Q: Why is PTV18B-E3/84A classified as obsolete?

A: The PTV18B-E3/84A has been discontinued by the manufacturer. The active substitute parts PTV18B-M3/84A and PTV18B-M3/85A provide equivalent functionality and are recommended for new designs and ongoing procurement.

Q: Are there any compliance or regulatory differences between these parts?

A: No. All three parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). Regulatory and environmental compliance is equivalent across all three part numbers.

Q: Can these Zener diodes be used in the same PCB assembly process?

A: Yes. All parts use the DO-220AA surface mount package and are compatible with standard SMT assembly equipment and reflow processes. No process modifications are required when substituting between these part numbers.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is based on matching Zener voltage (19.2 V), power rating (600 mW), voltage tolerance (±6%), impedance (12 Ohms maximum), reverse leakage current (10 µA @ 13 V), and forward voltage (1.5 V @ 200 mA). All substitute parts meet these criteria.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message