SMAZ5V1-13 Zener Diode Equivalent & Substitute Parts

Part Overview

The SMAZ5V1-13 is a 5.1 V, 1 W surface mount zener diode manufactured by Diodes Incorporated in the DO-214AC (SMA) package. This component is designed for voltage regulation and protection applications in electronic circuits. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain identical or compatible electrical and mechanical specifications for continued design support and production requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	5.1	V
Tolerance	±5	%
Power - Maximum	1	W
Impedance (Maximum)	5	Ohms
Current - Reverse Leakage @ Vr	2.5	µA @ 1 V
Voltage - Forward (Maximum) @ If	1.2	V @ 200 mA
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA

Substitute Part Grouping Explanation

Substitution of the SMAZ5V1-13 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Zener voltage (Vz): 5.1 V nominal
Tolerance: ±5%
Maximum power dissipation: 1 W
Package type: DO-214AC (SMA)
Mounting configuration: Surface Mount

Secondary Compatibility Parameters:

Impedance (Zzt): Maximum 5 Ohms (allows tolerance in manufacturing)
Reverse leakage current: 2.5 µA @ 1 V (allows tolerance in manufacturing)
Forward voltage: 1.2 V maximum @ 200 mA
Operating temperature range: -65°C to 150°C minimum

Parts meeting all primary criteria and operating within secondary parameter tolerances are classified as direct parametric equivalents. Variations in impedance or reverse leakage within specified limits do not preclude substitution, as these parameters remain within functional design margins for typical voltage regulation and protection circuits.

Parameter Comparison

Parameter	SMAZ5V1-13 (Main)	SMAZ5V1-13-F	1SMA4733_R1_00001	SMAZ5V1-TP
Manufacturer	Diodes Incorporated	Diodes Incorporated	Panjit International Inc.	Micro Commercial Co
Voltage - Zener (Nom)	5.1 V	5.1 V	5.1 V	5.1 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	1 W	1 W	1 W	1 W
Impedance (Max)	5 Ohms	5 Ohms	7 Ohms	5 Ohms
Current - Reverse Leakage @ Vr	2.5 µA @ 1 V	2.5 µA @ 1 V	10 µA @ 1 V	2.5 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.2 V @ 200 mA	Not specified	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SMAZ5V1-13-F (Diodes Incorporated)

This part is a direct parametric equivalent to the SMAZ5V1-13. It maintains identical electrical specifications including 5.1 V zener voltage, 1 W power rating, 5 Ohms maximum impedance, and 2.5 µA reverse leakage current. The component is currently in active production status with substantial inventory availability (30,420 units). It carries ROHS3 compliance certification, addressing regulatory requirements that the original discontinued part does not meet. The packaging format (Cut Tape & Digi-Reel) supports both manual and automated assembly processes.

SMAZ5V1-TP (Micro Commercial Co)

This part is a direct parametric equivalent with identical electrical specifications to the main part. It maintains the 5.1 V zener voltage, 1 W power rating, 5 Ohms maximum impedance, and 2.5 µA reverse leakage current. The component is in active production with ROHS3 compliance. Operating temperature range matches the original specification (-65°C to 150°C). Inventory availability is lower (2,008 units) compared to the Diodes Incorporated alternative.

1SMA4733_R1_00001 (Panjit International Inc.)

This part meets primary substitution criteria with identical 5.1 V zener voltage, ±5% tolerance, and 1 W power rating in the DO-214AC (SMA) package. Impedance is specified at 7 Ohms maximum (compared to 5 Ohms for the main part) and reverse leakage current is 10 µA @ 1 V (compared to 2.5 µA). These parameter variations remain within acceptable functional margins for voltage regulation and protection applications. The component is in active production with ROHS3 compliance and high inventory availability (27,800 units). Operating temperature range is -55°C to 150°C, which is 10°C narrower at the lower bound than the original specification.

Frequently Asked Questions (FAQ)

Q: Can SMAZ5V1-13-F be used as a direct replacement for SMAZ5V1-13?

A: Yes. SMAZ5V1-13-F is a direct parametric equivalent with identical zener voltage (5.1 V), tolerance (±5%), power rating (1 W), impedance (5 Ohms maximum), reverse leakage current (2.5 µA @ 1 V), forward voltage (1.2 V @ 200 mA), and operating temperature range (-65°C to 150°C). Both components use the DO-214AC (SMA) surface mount package. The primary difference is product status: SMAZ5V1-13-F is in active production while SMAZ5V1-13 is discontinued.

Q: What are the differences between SMAZ5V1-TP and the original SMAZ5V1-13?

A: SMAZ5V1-TP is manufactured by Micro Commercial Co rather than Diodes Incorporated, but maintains identical electrical specifications: 5.1 V zener voltage, ±5% tolerance, 1 W power rating, 5 Ohms maximum impedance, 2.5 µA reverse leakage current, and 1.2 V forward voltage. Operating temperature range is identical (-65°C to 150°C). Both use the DO-214AC (SMA) package. The substitute is in active production status with ROHS3 compliance.

Q: How does 1SMA4733_R1_00001 differ from SMAZ5V1-13?

A: 1SMA4733_R1_00001 maintains the critical specifications of 5.1 V zener voltage, ±5% tolerance, and 1 W power rating in the DO-214AC (SMA) package. Two parameters differ: impedance is specified at 7 Ohms maximum (versus 5 Ohms) and reverse leakage current is 10 µA @ 1 V (versus 2.5 µA). These variations remain within functional design margins for typical voltage regulation and protection circuits. Operating temperature range is -55°C to 150°C, which is 10°C narrower at the lower temperature limit.

Q: Are all substitute parts RoHS compliant?

A: Yes. SMAZ5V1-13-F, SMAZ5V1-TP, and 1SMA4733_R1_00001 are all ROHS3 compliant. The original SMAZ5V1-13 is RoHS non-compliant. If RoHS compliance is required for your application, any of the three substitute parts satisfy this requirement.

Q: Do all substitute parts use the same package?

A: Yes. All substitute parts use the DO-214AC (SMA) surface mount package, identical to the original SMAZ5V1-13. This ensures mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Q: Which substitute part has the best inventory availability?

A: SMAZ5V1-13-F has the highest inventory availability with 30,420 units in stock, followed by 1SMA4733_R1_00001 with 27,800 units, and SMAZ5V1-TP with 2,008 units.

Q: Can I use 1SMA4733_R1_00001 in applications requiring the full -65°C to 150°C temperature range?

A: 1SMA4733_R1_00001 is specified for -55°C to 150°C operation. If your application requires operation below -55°C, this part is not suitable. SMAZ5V1-13-F and SMAZ5V1-TP both support the full -65°C to 150°C range.

Q: What is the significance of the impedance difference in 1SMA4733_R1_00001?

A: 1SMA4733_R1_00001 specifies 7 Ohms maximum impedance compared to 5 Ohms for the other parts. Impedance affects the dynamic response of the zener diode during transient voltage changes. The 7 Ohms specification remains within acceptable limits for standard voltage regulation and protection applications. Applications with stringent transient response requirements should verify compatibility through circuit simulation or testing.

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