DDZX16-7 Zener Diode Equivalent & Substitute Parts

Part Overview

The DDZX16-7 is a 16 V, 300 mW surface mount zener diode manufactured by Diodes Incorporated in SOT-23-3 packaging. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. The DDZX16-7 serves voltage regulation and protection applications in electronic circuits requiring precise 16 V reference voltage generation.

Substitute parts become necessary due to inventory availability, supply chain constraints, or specific application requirements such as automotive qualification or alternative tolerance specifications. The following equivalent and substitute components maintain functional compatibility within defined electrical and mechanical parameters.

Substiute Parts

DDZX16-7

Diodes IncorporatedIn Stock: 42256DDZX16-7 Datasheet

Current PartRFQ

DDZX16-13

Diodes IncorporatedIn Stock: 1014DDZX16-13 Datasheet

Parametric EquivalentRFQ

BZX84-B16,215

NXP SemiconductorsIn Stock: 27446BZX84-B16,215 Datasheet

MFR RecommendedRFQ

BZX84C16LT1G

onsemiIn Stock: 41193BZX84C16LT1G Datasheet

MFR RecommendedRFQ

SZBZX84C16LT1G

onsemiIn Stock: 17259SZBZX84C16LT1G Datasheet

MFR RecommendedRFQ

SZBZX84C16LT3G

onsemiIn Stock: 17317SZBZX84C16LT3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DDZX16-7 zener diode is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage: 16 V nominal
• Package type: SOT-23-3 (TO-236-3, SC-59) surface mount
• Operating temperature range: -65°C to 150°C minimum
• Mounting type: Surface mount
• RoHS3 compliance and REACH unaffected status

Secondary Compatibility Parameters:

• Power dissipation: 250 mW to 300 mW acceptable
• Tolerance: ±2% to ±6% acceptable for voltage regulation applications
• Impedance: 18 to 40 Ohms acceptable
• Reverse leakage current: 50 nA @ 11.2 V to 12 V acceptable
• Forward voltage: 900 mV @ 10 mA

Substitute parts are grouped into two categories: parametric equivalents from the same manufacturer (Diodes Incorporated) and manufacturer-recommended alternatives from onsemi and NXP Semiconductors. All listed substitutes maintain electrical compatibility within the specified parameter ranges and identical package footprints.

Parameter Comparison

Engineering Selection Recommendations

DDZX16-13 (Diodes Incorporated): Direct parametric equivalent with identical electrical specifications (16 V, ±3%, 300 mW, 18 Ohms impedance). Maintains same manufacturer lineage and RoHS3 compliance. Suitable for direct replacement in non-automotive applications. Lower inventory availability (921 pcs) compared to main part.

BZX84C16LT1G (onsemi): Active product with RoHS3 compliance. Reduced power rating (225 mW) and increased impedance (40 Ohms) with wider tolerance (±6%). Suitable for applications with lower power dissipation requirements. No automotive qualification.

SZBZX84C16LT1G and SZBZX84C16LT3G (onsemi): Automotive-grade alternatives with AEC-Q101 qualification. 250 mW power rating and ±5% tolerance. Identical SOT-23-3 package footprint. Recommended for automotive and safety-critical applications. Both variants maintain equivalent electrical performance.

BZX84-B16,215 (NXP Semiconductors): Automotive-grade zener diode with AEC-Q101 qualification and tightest tolerance specification (±2%). 250 mW power rating. Supplied in bulk packaging. Recommended for precision voltage regulation in automotive systems. Highest inventory availability (27,358 pcs).

All substitute parts maintain Active product status, RoHS3 compliance, and identical operating temperature range (-65°C to 150°C). Selection between substitutes depends on application requirements: standard industrial use, automotive qualification necessity, tolerance precision, and power dissipation headroom.

Frequently Asked Questions (FAQ)

Q: Can DDZX16-13 replace DDZX16-7 in all applications?

A: Yes. DDZX16-13 is a parametric equivalent with identical zener voltage (16 V), tolerance (±3%), power rating (300 mW), and impedance (18 Ohms). Both components share the same SOT-23-3 package and operating temperature range. Substitution is direct without circuit modification.

Q: What is the difference between SZBZX84C16LT1G and SZBZX84C16LT3G?

A: Both parts are electrically identical with 16 V zener voltage, ±5% tolerance, 250 mW power rating, and 40 Ohms impedance. Both carry AEC-Q101 automotive qualification. The difference lies in packaging designation (LT1G versus LT3G), which reflects different manufacturing or distribution batches. Electrical performance and compatibility are equivalent.

Q: Why does BZX84-B16,215 have lower power rating (250 mW) than DDZX16-7 (300 mW)?

A: BZX84-B16,215 is designed for automotive applications with AEC-Q101 qualification and tighter tolerance (±2%). The 250 mW rating remains sufficient for standard 16 V voltage regulation circuits. Applications requiring full 300 mW dissipation should use DDZX16-7 or DDZX16-13.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH unaffected status, matching the environmental and regulatory requirements of the main DDZX16-7 component.

Q: Can I use BZX84C16LT1G in place of DDZX16-7?

A: Substitution is possible with design consideration. BZX84C16LT1G has lower power rating (225 mW versus 300 mW), wider tolerance (±6% versus ±3%), and higher impedance (40 Ohms versus 18 Ohms). Applications with lower power dissipation and tolerance flexibility accept this substitute. High-precision or high-power applications require DDZX16-7 or DDZX16-13.

Q: What is the advantage of automotive-grade substitutes (SZBZX84C16LT1G, SZBZX84C16LT3G, BZX84-B16,215)?

A: Automotive-grade parts carry AEC-Q101 qualification, indicating compliance with automotive reliability and quality standards. These parts are suitable for vehicle electronics, industrial control systems, and safety-critical applications. Non-automotive applications do not require this qualification.

Q: Do all substitute parts use the same SOT-23-3 package?

A: Yes. All substitute parts use SOT-23-3 (TO-236-3, SC-59) surface mount package with identical footprint and pinout. Direct PCB placement compatibility is maintained across all listed substitutes.

Q: Which substitute has the best voltage tolerance specification?

A: BZX84-B16,215 from NXP Semiconductors offers the tightest tolerance at ±2%, compared to ±3% for DDZX16-7 and ±5% to ±6% for onsemi alternatives. This specification is advantageous for precision voltage reference applications.