AZ23C5V1-7 Equivalent & Substitute Parts

Part Overview

The AZ23C5V1-7 is a Zener Diode Array manufactured by Diodes Incorporated, configured as 1 Pair Common Anode with a nominal Zener voltage of 5.1 V and maximum power dissipation of 300 mW. The device is packaged in SOT-23-3 (TO-236-3, SC-59) surface mount configuration. This part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	AZ23C5V1-7
Manufacturer	Diodes Incorporated
Category	Diodes, Zener
Configuration	1 Pair Common Anode
Voltage - Zener (Nom)	5.1 V
Tolerance	±5%
Power - Max	300 mW
Impedance (Max)	60 Ohms
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Product Status	Discontinued at DiGi Electronics
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the AZ23C5V1-7 is determined by the following critical parameters that must be maintained or exceeded:

Electrical Parameters:

Voltage - Zener (Nom): 5.1 V (exact match required)
Tolerance: ±5% or tighter (±2% is acceptable)
Power - Max: 300 mW or greater
Impedance (Max): 60 Ohms or lower
Configuration: 1 Pair Common Anode (exact match required)

Mechanical Parameters:

Mounting Type: Surface Mount (required)
Package / Case: SOT-23-3 compatible packages (TO-236-3, SC-59, SOT-23-3, or equivalent)

Compliance Parameters:

RoHS Status: ROHS3 Compliant preferred for new designs
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts must satisfy all electrical and mechanical requirements. Parts with identical or superior specifications in power rating, tolerance, and impedance are considered direct substitutes. Package variations within the SOT-23 family are acceptable provided pin configuration remains compatible.

Parameter Comparison

Parameter	AZ23C5V1-7	AZ23C5V1-7-F	AZ23C5V1-TP	BZB784-C5V1,115	BZB84-B5V1,215
Manufacturer	Diodes Incorporated	Diodes Incorporated	Micro Commercial Co	Nexperia USA Inc.	Nexperia USA Inc.
Configuration	1 Pair Common Anode	1 Pair Common Anode	1 Pair Common Anode	1 Pair Common Anode	1 Pair Common Anode
Voltage - Zener (Nom)	5.1 V	5.1 V	5.1 V	5.1 V	5.1 V
Tolerance	±5%	±5%	±5%	±5%	±2%
Power - Max	300 mW	300 mW	300 mW	180 mW	300 mW
Impedance (Max)	60 Ohms	60 Ohms	60 Ohms	60 Ohms	480 Ohms
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	SC-70, SOT-323	TO-236-3, SC-59, SOT-23-3
Product Status	Discontinued at DiGi Electronics	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: AZ23C5V1-7-F

The AZ23C5V1-7-F is the direct equivalent from Diodes Incorporated. It maintains identical electrical specifications (5.1 V, ±5% tolerance, 300 mW, 60 Ohms impedance) and package configuration (SOT-23-3). The part is currently active in production and ROHS3 compliant, making it the preferred replacement for the discontinued AZ23C5V1-7. The only difference is packaging format (Tape & Reel vs. bulk), which does not affect electrical or mechanical compatibility.

Secondary Substitute: AZ23C5V1-TP

The AZ23C5V1-TP from Micro Commercial Co provides identical electrical performance and package compatibility. It is actively produced and ROHS3 compliant. This option is suitable for applications where multi-source qualification is required.

Alternative Substitute: BZB84-B5V1,215

The BZB84-B5V1,215 from Nexperia USA Inc. maintains the 5.1 V nominal voltage, 300 mW power rating, and SOT-23-3 package. It offers improved tolerance (±2% vs. ±5%) and is AEC-Q101 qualified for automotive applications. However, the impedance specification (480 Ohms) exceeds the original part's 60 Ohms maximum, which may affect circuit performance in applications sensitive to dynamic impedance characteristics. This part is suitable only when impedance tolerance is not a critical design parameter.

Not Recommended: BZB784-C5V1,115

The BZB784-C5V1,115 uses a different package (SOT-323 vs. SOT-23-3) and has reduced power rating (180 mW vs. 300 mW). While it maintains the 5.1 V specification and 60 Ohms impedance, the package incompatibility and lower power dissipation capability make it unsuitable as a direct substitute without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can AZ23C5V1-7-F be used as a direct replacement for AZ23C5V1-7?

A: Yes. The AZ23C5V1-7-F is electrically and mechanically identical to the AZ23C5V1-7. Both devices feature 5.1 V nominal Zener voltage, ±5% tolerance, 300 mW maximum power dissipation, 60 Ohms maximum impedance, and SOT-23-3 packaging. The only difference is the packaging format (Tape & Reel). No circuit modifications are required.

Q: What is the difference between SOT-23-3 and SOT-323 packages?

A: SOT-23-3 (also designated TO-236-3 or SC-59) and SOT-323 are different surface mount packages with different physical dimensions and pin spacing. SOT-323 is smaller than SOT-23-3. These packages are not interchangeable without PCB redesign. The BZB784-C5V1,115 uses SOT-323 and cannot be used on boards designed for SOT-23-3 components.

Q: Why does BZB84-B5V1,215 have higher impedance (480 Ohms) than the original part (60 Ohms)?

A: Impedance is a characteristic of the diode's internal structure and manufacturing process. Different manufacturers and product lines have different impedance specifications. While both parts maintain the 5.1 V Zener voltage, the higher impedance of the BZB84-B5V1,215 may affect transient response and noise filtering performance in sensitive applications.

Q: Is the reduced power rating of BZB784-C5V1,115 (180 mW vs. 300 mW) a concern?

A: The reduced power rating indicates lower maximum power dissipation capability. If the original circuit design requires 300 mW dissipation, the BZB784-C5V1,115 cannot safely handle this power level and may fail. This part is suitable only for applications with power requirements below 180 mW.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed (AZ23C5V1-7-F, AZ23C5V1-TP, BZB784-C5V1,115, and BZB84-B5V1,215) are ROHS3 compliant. The original AZ23C5V1-7 is RoHS non-compliant. For new designs and applications subject to RoHS regulations, any of the compliant substitutes is acceptable.

Q: Can I use BZB84-B5V1,215 if my circuit is not sensitive to impedance variations?

A: Yes, provided the circuit does not depend on the 60 Ohms impedance specification for proper operation. The BZB84-B5V1,215 maintains the critical 5.1 V voltage and 300 mW power rating in the same SOT-23-3 package. However, AZ23C5V1-7-F remains the preferred choice due to exact impedance matching.

Q: What is the significance of AEC-Q100 and AEC-Q101 qualifications?

A: AEC-Q100 and AEC-Q101 are automotive industry reliability qualifications. BZB784-C5V1,115 carries AEC-Q100 qualification, while BZB84-B5V1,215 carries AEC-Q101 qualification. These certifications indicate the parts have undergone rigorous testing for automotive applications. For non-automotive applications, these qualifications are not required but indicate high reliability standards.

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