SMAZ16-13 Zener Diode Equivalent & Substitute Parts

Part Overview

The SMAZ16-13 is a 16 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 requiring a nominal zener voltage of 16 V with ±5% tolerance and 1 W maximum power dissipation.

The SMAZ16-13 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from multiple manufacturers with identical or enhanced electrical characteristics and improved product status. Substitute components maintain the same zener voltage, tolerance, and mounting type while offering active product status and RoHS3 compliance.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	16	V
Tolerance	±5	%
Power - Max	1	W
Impedance (Max)	15	Ohms
Current - Reverse Leakage @ Vr	500	nA @ 12.2 V
Voltage - Forward (Vf) (Max) @ If	1.2	V @ 200 mA
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the SMAZ16-13 are classified based on electrical parameter equivalence and compliance status. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - Zener (Nom): 16 V (exact match required)
Tolerance: ±5% (exact match required)
Mounting Type: Surface Mount (exact match required)
Package / Case: DO-214AC, SMA (exact match required)

Secondary Parameters (Allow Variation Within Limits):

Power - Max: 1 W or greater
Impedance (Max): 15 Ohms or less
Current - Reverse Leakage @ Vr: 500 nA or less
Voltage - Forward (Vf) (Max) @ If: 1.2 V or less
Operating Temperature Range: -65°C to 150°C or equivalent

Parametric Equivalent Parts maintain all critical parameters and secondary parameters within acceptable ranges. These parts are direct replacements with no circuit modifications required.

MFR Recommended Parts meet all critical parameters and maintain functional equivalence. Minor variations in secondary parameters (such as increased power rating or improved leakage characteristics) provide enhanced performance without affecting circuit compatibility.

Parameter Comparison

Parameter	SMAZ16-13	SMAZ16-13-F	1SMA4745_R1_00001	SMAJ5930B-TP	SMAZ16-TP
Manufacturer	Diodes Incorporated	Diodes Incorporated	Panjit International Inc.	Micro Commercial Co	Micro Commercial Co
Voltage - Zener (Nom)	16 V	16 V	16 V	16 V	16 V
Tolerance	±5%	±5%	±5%	±5%	±5%
Power - Max	1 W	1 W	1 W	1.5 W	1 W
Impedance (Max)	15 Ohms	15 Ohms	16 Ohms	10 Ohms	15 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 12.2 V	500 nA @ 12.2 V	100 nA @ 12.2 V	500 nA @ 12.2 V	500 nA @ 12.2 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.2 V @ 200 mA	Not specified	1.5 V @ 200 mA	1.2 V @ 200 mA
Operating Temperature Range	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Product Status	Discontinued	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Inventory Status	2000 Pcs	25300 Pcs	3691 Pcs	8105 Pcs	55406 Pcs

Engineering Selection Recommendations

SMAZ16-13-F (Diodes Incorporated) is the primary parametric equivalent. This part maintains identical electrical specifications to the SMAZ16-13 across all critical and secondary parameters. The SMAZ16-13-F is currently in active product status with 25,300 units in stock and carries RoHS3 compliance certification. This part is available in Cut Tape (CT) and Digi-Reel packaging options, providing flexibility for both prototype and production volume requirements.

SMAZ16-TP (Micro Commercial Co) is a parametric equivalent offering identical electrical performance to the SMAZ16-13. This part maintains all critical parameters and secondary specifications. The SMAZ16-TP is in active product status with the highest inventory availability at 55,406 units and carries RoHS3 compliance. This part is supplied in Tape & Reel (TR) packaging suitable for automated assembly processes.

1SMA4745_R1_00001 (Panjit International Inc.) is a manufacturer-recommended equivalent. This part meets all critical substitution parameters with a nominal zener voltage of 16 V and ±5% tolerance. The 1SMA4745_R1_00001 provides improved reverse leakage characteristics at 100 nA compared to the original 500 nA specification. The operating temperature range is -55°C to 150°C, which covers the majority of industrial applications. This part is in active product status with RoHS3 compliance and 3,691 units in stock.

SMAJ5930B-TP (Micro Commercial Co) is a manufacturer-recommended substitute with enhanced power rating. This part maintains the 16 V nominal zener voltage and ±5% tolerance but provides 1.5 W maximum power dissipation compared to the original 1 W specification. The SMAJ5930B-TP offers improved impedance characteristics at 10 Ohms maximum. This part is suitable for applications requiring higher thermal margin or increased power handling capability. The part is in active product status with RoHS3 compliance and 8,105 units in stock. Note that the operating temperature specification lists only the maximum junction temperature of 150°C without a minimum value.

All substitute parts are RoHS3 compliant, addressing regulatory requirements not met by the discontinued SMAZ16-13. Selection between equivalent parts should be based on packaging requirements (Cut Tape, Digi-Reel, or Tape & Reel), inventory availability, and thermal design margins for the specific application.

Frequently Asked Questions (FAQ)

Q: Can SMAZ16-13-F be used as a direct replacement for SMAZ16-13?

A: Yes. The SMAZ16-13-F is a parametric equivalent with identical electrical specifications. All critical parameters including zener voltage (16 V), tolerance (±5%), power rating (1 W), impedance (15 Ohms maximum), and operating temperature range (-65°C to 150°C) match the original part. The SMAZ16-13-F is pin-compatible and requires no circuit modifications.

Q: What is the difference between SMAZ16-TP and SMAZ16-13-F?

A: Both parts are parametric equivalents with identical electrical specifications. The primary differences are manufacturer (Micro Commercial Co versus Diodes Incorporated) and packaging format. SMAZ16-13-F is available in Cut Tape and Digi-Reel formats, while SMAZ16-TP is supplied in Tape & Reel format. Selection depends on assembly process requirements and inventory preferences.

Q: Can SMAJ5930B-TP replace SMAZ16-13 in all applications?

A: SMAJ5930B-TP is functionally compatible as a substitute with enhanced specifications. The part maintains the 16 V zener voltage and ±5% tolerance. The primary difference is increased power rating (1.5 W versus 1 W), which provides additional thermal margin. The forward voltage specification differs at 1.5 V versus 1.2 V at 200 mA. Applications with tight forward voltage requirements should evaluate this parameter. The operating temperature specification for SMAJ5930B-TP lists only the maximum junction temperature without a minimum value, which may be a consideration for low-temperature applications.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by four critical parameters: (1) Voltage - Zener (Nom) must be 16 V, (2) Tolerance must be ±5%, (3) Mounting Type must be Surface Mount, and (4) Package / Case must be DO-214AC or SMA. Secondary parameters including power rating, impedance, reverse leakage, and forward voltage may vary within acceptable ranges without affecting circuit function.

Q: Is 1SMA4745_R1_00001 suitable for low-temperature applications?

A: The 1SMA4745_R1_00001 specifies an operating temperature range of -55°C to 150°C. Applications requiring operation below -55°C should use SMAZ16-13-F or SMAZ16-TP, which both specify -65°C minimum operating temperature. For applications operating between -55°C and 150°C, the 1SMA4745_R1_00001 is suitable.

Q: What is the advantage of the higher power rating in SMAJ5930B-TP?

A: The SMAJ5930B-TP provides 1.5 W maximum power dissipation compared to 1 W in the original SMAZ16-13. Higher power rating allows greater current handling capability and provides thermal margin in applications with variable load conditions. This is beneficial for designs with limited heat dissipation or applications subject to transient overvoltage events.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (SMAZ16-13-F, 1SMA4745_R1_00001, SMAJ5930B-TP, and SMAZ16-TP) carry RoHS3 compliance certification. The original SMAZ16-13 is RoHS non-compliant. Substitution with any of these parts addresses RoHS regulatory requirements for new designs and manufacturing processes.

Q: What packaging options are available for these substitute parts?

A: SMAZ16-13-F is available in Cut Tape (CT) and Digi-Reel packaging. SMAZ16-TP and SMAJ5930B-TP are supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements. Cut Tape and Digi-Reel formats are suitable for lower-volume or prototype applications, while Tape & Reel format is optimized for automated pick-and-place assembly in production environments.

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