PLZ39C-G3/H Equivalent & Substitute Parts

Part Overview

The PLZ39C-G3/H is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 39 V nominal with 500 mW power dissipation and ±3% tolerance. The device is packaged in DO-219AC (microSMF) surface mount configuration and supplied in Tape & Reel format. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the PLZ39 series. Alternative part numbers within this series provide identical or superior specifications while maintaining the same package footprint and mounting characteristics, enabling direct substitution in production environments.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	39	V
Tolerance	±3%	—
Power - Maximum	500	mW
Impedance (Maximum)	85	Ohms
Current - Reverse Leakage @ 30 V	200	nA
Voltage - Forward (Maximum) @ 10 mA	900	mV
Operating Temperature	150	°C
Package / Case	DO-219AC (microSMF)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution within the PLZ39 series is determined by the following critical parameters:

Electrical Equivalence Criteria:

Voltage - Zener (Nominal): 39 V (fixed across all variants)
Power - Maximum: 500 mW (fixed across all variants)
Impedance (Maximum): 85 Ohms (fixed across all variants)
Current - Reverse Leakage @ 30 V: 200 nA (fixed across all variants)
Voltage - Forward (Maximum) @ 10 mA: 900 mV (fixed across all variants)
Operating Temperature: 150°C (fixed across all variants)

Mechanical Compatibility Criteria:

Package / Case: DO-219AC (microSMF) (fixed across all variants)
Mounting Type: Surface Mount (fixed across all variants)

Tolerance Variants:

±3% tolerance: PLZ39A-G3/H, PLZ39B-G3/H, PLZ39C-G3/H, PLZ39A-HG3_A/H, PLZ39B-HG3_A/H, PLZ39C-HG3_A/H
±2% tolerance: PLZ39D-G3/H, PLZ39D-HG3_A/H

Automotive Grade Variants:

Standard Grade: PLZ39A-G3/H, PLZ39B-G3/H, PLZ39C-G3/H, PLZ39D-G3/H
Automotive Grade (AEC-Q101): PLZ39A-HG3_A/H, PLZ39B-HG3_A/H, PLZ39C-HG3_A/H, PLZ39D-HG3_A/H

Packaging Format Variants:

Tape & Reel (TR): All listed variants
Cut Tape (CT) & Digi-Reel®: PLZ39A-HG3_A/H

All substitute parts maintain identical core electrical specifications and package dimensions, enabling direct substitution based on tolerance requirements and automotive qualification needs.

Parameter Comparison

Part Number	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Ir @ 30V	Vf (Max) @ 10mA	Temp (Max)	Package	Grade	Inventory (Pcs)
PLZ39C-G3/H	39 V	±3%	500 mW	85 Ω	200 nA	900 mV	150°C	DO-219AC	Standard	950
PLZ39A-G3/H	39 V	±3%	500 mW	85 Ω	200 nA	900 mV	150°C	DO-219AC	Standard	21875
PLZ39A-HG3_A/H	39 V	±3%	500 mW	85 Ω	200 nA	900 mV	150°C	DO-219AC	Automotive	23693
PLZ39B-G3/H	39 V	±3%	500 mW	85 Ω	200 nA	900 mV	150°C	DO-219AC	Standard	1013
PLZ39B-HG3_A/H	39 V	±3%	500 mW	85 Ω	200 nA	900 mV	150°C	DO-219AC	Automotive	881
PLZ39C-HG3_A/H	39 V	±3%	500 mW	85 Ω	200 nA	900 mV	150°C	DO-219AC	Automotive	951
PLZ39D-G3/H	39 V	±2%	500 mW	85 Ω	200 nA	900 mV	150°C	DO-219AC	Standard	25832
PLZ39D-HG3_A/H	39 V	±2%	500 mW	85 Ω	200 nA	900 mV	150°C	DO-219AC	Automotive	1101

Engineering Selection Recommendations

For Standard Grade Applications (Non-Automotive):

PLZ39A-G3/H, PLZ39B-G3/H, and PLZ39C-G3/H are direct electrical and mechanical equivalents with ±3% tolerance. PLZ39A-G3/H offers the highest inventory availability (21,875 pcs) and is suitable for general industrial applications requiring standard grade zener diodes. PLZ39D-G3/H provides tighter ±2% tolerance specification with superior inventory position (25,832 pcs) for applications requiring enhanced voltage regulation accuracy.

For Automotive Applications (AEC-Q101 Qualified):

PLZ39A-HG3_A/H, PLZ39B-HG3_A/H, PLZ39C-HG3_A/H, and PLZ39D-HG3_A/H are automotive-grade variants with AEC-Q101 qualification. These parts maintain identical electrical performance while meeting automotive reliability standards. PLZ39A-HG3_A/H and PLZ39C-HG3_A/H provide adequate inventory for automotive production environments. PLZ39D-HG3_A/H combines automotive qualification with ±2% tolerance for precision voltage regulation in automotive circuits.

Tolerance Selection:

Applications requiring ±3% voltage tolerance can utilize any of the A, B, or C variants. Applications demanding tighter voltage regulation with ±2% tolerance must specify PLZ39D-G3/H (standard grade) or PLZ39D-HG3_A/H (automotive grade).

Compliance and Regulatory:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and Moisture Sensitivity Level 1 (unlimited). No regulatory or compliance barriers exist for substitution within this series.

Frequently Asked Questions (FAQ)

Q: Can PLZ39A-G3/H be substituted for PLZ39C-G3/H in production?

A: Yes. Both parts are electrically and mechanically identical with 39 V nominal zener voltage, 500 mW power rating, ±3% tolerance, and DO-219AC surface mount packaging. PLZ39A-G3/H offers superior inventory availability and is a direct substitute.

Q: What is the difference between standard grade and automotive grade variants?

A: Automotive grade variants (suffix HG3_A/H) carry AEC-Q101 qualification and are designed for automotive applications. Standard grade variants lack this qualification. Electrical specifications remain identical. Selection depends on application requirements and automotive compliance mandates.

Q: Can PLZ39D-G3/H replace PLZ39C-G3/H?

A: Yes, with the following consideration: PLZ39D-G3/H provides ±2% tolerance compared to PLZ39C-G3/H's ±3% tolerance. This represents a tighter specification and is electrically compatible. All other parameters are identical. PLZ39D-G3/H is a valid substitute offering improved voltage accuracy.

Q: Are there packaging format differences among substitute parts?

A: PLZ39A-HG3_A/H is available in both Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats. All other variants are supplied in Tape & Reel format only. Packaging format selection depends on assembly equipment and handling requirements.

Q: What inventory considerations apply to substitute selection?

A: PLZ39A-G3/H (21,875 pcs) and PLZ39D-G3/H (25,832 pcs) offer the highest inventory levels for standard grade applications. PLZ39A-HG3_A/H (23,693 pcs) provides strong availability for automotive applications. Lower inventory variants (PLZ39B-G3/H, PLZ39B-HG3_A/H, PLZ39C-HG3_A/H, PLZ39D-HG3_A/H) are suitable for lower-volume production or secondary sourcing strategies.

Q: Do all substitute parts meet RoHS3 and REACH requirements?

A: Yes. All substitute parts within the PLZ39 series are ROHS3 compliant and REACH unaffected. No regulatory compliance differences exist among variants.

Q: What is the significance of the tolerance specification in zener diode selection?

A: Tolerance specifies the allowable deviation from the nominal 39 V zener voltage. ±3% tolerance allows ±1.17 V deviation (37.83 V to 40.17 V). ±2% tolerance allows ±0.78 V deviation (38.22 V to 39.78 V). Applications requiring precise voltage regulation should specify ±2% variants (PLZ39D series).

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