DDZX5V1B-13 Equivalent & Substitute Parts

Part Overview

The DDZX5V1B-13 is a Zener diode rated at 5.1 V with 300 mW power dissipation in a surface mount SOT-23-3 package, manufactured by Diodes Incorporated. This part is classified as obsolete, which necessitates identification of equivalent substitute components for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical specifications and mechanical compatibility while offering active product status and improved availability.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	5.1 V
Tolerance	±3%
Power - Max	300 mW
Impedance (Max)	17 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 1.5 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA
Operating Temperature Range	-65°C ~ 150°C
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the DDZX5V1B-13 is determined by strict equivalence across the following critical parameters:

Zener Voltage (Vz): 5.1 V nominal
Power Dissipation: 300 mW maximum
Package Type: SOT-23-3 surface mount
Operating Temperature Range: -65°C ~ 150°C
Impedance (Zzt): 17 Ohms maximum
Reverse Leakage Current: 5 µA @ 1.5 V
Forward Voltage: 900 mV @ 10 mA maximum

Substitute parts must maintain all electrical characteristics within specified tolerances and be compatible with the same PCB footprint and reflow soldering process. Packaging format (Tape & Reel) does not affect electrical or mechanical compatibility.

Parameter Comparison

Parameter	DDZX5V1B-13	DDZX5V1B-7	DDZX5V1BQ-7
Manufacturer	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom)	5.1 V	5.1 V	5.1 V
Tolerance	±3%	±3%	±2%
Power - Max	300 mW	300 mW	300 mW
Impedance (Max)	17 Ohms	17 Ohms	17 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 1.5 V	5 µA @ 1.5 V	5 µA @ 1.5 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
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
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

DDZX5V1B-7 is a direct parametric equivalent to DDZX5V1B-13 with identical electrical specifications and mechanical compatibility. The primary distinction is product status: DDZX5V1B-7 maintains active production status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant and carry unlimited moisture sensitivity classification.

DDZX5V1BQ-7 provides an alternative with tighter voltage tolerance (±2% versus ±3%) and automotive-grade qualification (AEC-Q101). This variant is suitable for applications requiring enhanced precision or automotive-qualified components. All other electrical and mechanical parameters remain equivalent to the main part.

Selection between DDZX5V1B-7 and DDZX5V1BQ-7 depends on application requirements: standard industrial applications utilize DDZX5V1B-7, while automotive or precision-critical applications benefit from DDZX5V1BQ-7's tighter tolerance and qualification status.

Frequently Asked Questions (FAQ)

Q: Can DDZX5V1B-7 be used as a direct replacement for DDZX5V1B-13?

A: Yes. DDZX5V1B-7 maintains identical electrical specifications (5.1 V nominal, 300 mW, ±3% tolerance) and mechanical compatibility (SOT-23-3 package). The parts are pin-compatible and require no circuit modifications.

Q: What is the difference between DDZX5V1B-7 and DDZX5V1BQ-7?

A: DDZX5V1BQ-7 features tighter voltage tolerance (±2% versus ±3%) and carries AEC-Q101 automotive qualification. Electrical performance and package compatibility remain identical. Selection depends on tolerance requirements and automotive application needs.

Q: Does packaging format (Tape & Reel) affect compatibility?

A: No. Tape & Reel packaging is a supply format only and does not affect electrical performance or PCB compatibility. Both packaged and bulk formats of equivalent parts are mechanically and electrically interchangeable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. DDZX5V1B-7 and DDZX5V1BQ-7 are both ROHS3 compliant, matching the compliance status of the original DDZX5V1B-13.

Q: What is the moisture sensitivity classification for these parts?

A: All listed parts carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions during storage or handling.

Q: Can DDZX5V1BQ-7 be used in non-automotive applications?

A: Yes. DDZX5V1BQ-7 meets all specifications for standard industrial applications. Automotive qualification is an additional feature that does not restrict use in non-automotive designs.

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