SMAZ9V1-TP Equivalent & Substitute Parts

Part Overview

The SMAZ9V1-TP is a surface mount Zener diode manufactured by Micro Commercial Co, rated at 9.1 V nominal Zener voltage with 1 W maximum power dissipation in a DO-214AC (SMAJ) package. This component is classified as Active and maintains full RoHS3 compliance with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to provide design flexibility when the primary part number becomes unavailable or when alternative sourcing is required for procurement optimization.

Substiute Parts

SMAZ9V1-TP

Micro Commercial CoIn Stock: 6841SMAZ9V1-TP Datasheet

Current PartRFQ

SMAJ4739A-TP

Micro Commercial CoIn Stock: 6951SMAJ4739A-TP Datasheet

DirectRFQ

SMAZ9V1-13-F

Diodes IncorporatedIn Stock: 30264SMAZ9V1-13-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMAZ9V1-TP is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage (Nominal): 9.1 V
• Tolerance: ±5%
• Power rating: 1 W maximum
• Package type: DO-214AC (SMA/SMAJ variant)
• Mounting type: Surface Mount
• Operating temperature range: -65°C to 150°C minimum
• RoHS3 compliance status

Secondary Compatibility Parameters:

• Impedance (Maximum): 4 to 5 Ohms acceptable
• Reverse leakage current: 5 to 10 µA @ 7 V acceptable
• Forward voltage: 1.2 V maximum @ specified current

Parts meeting all primary criteria and falling within secondary parameter tolerances are classified as direct substitutes. Variations in impedance and leakage current remain within acceptable operational margins for standard voltage regulation and transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

SMAJ4739A-TP (Micro Commercial Co): This part maintains identical Zener voltage, tolerance, power rating, and temperature range specifications. The impedance increases to 5 Ohms (within acceptable margin) and reverse leakage current rises to 10 µA at 7 V. Forward voltage specification differs at 100 mA versus 200 mA test current. This substitute is suitable for applications where the slightly elevated impedance and leakage parameters remain within circuit design tolerances. RoHS3 compliance and MSL 1 rating match the primary part.

SMAZ9V1-13-F (Diodes Incorporated): This part provides parametric equivalence with identical Zener voltage, tolerance, power rating, impedance (4 Ohms), reverse leakage current (5 µA), and forward voltage characteristics (1.2 V @ 200 mA). Operating temperature range and package specifications are identical. The primary distinction is manufacturer origin (Diodes Incorporated versus Micro Commercial Co). RoHS3 compliance and MSL 1 rating are maintained. This substitute offers direct parametric replacement with no performance degradation.

Both substitute parts maintain Active product status and full regulatory compliance (RoHS3, REACH Unaffected, EAR99 classification). Selection between substitutes depends on procurement availability, supply chain requirements, and manufacturer preference within the design organization.

Frequently Asked Questions (FAQ)

Q: Can SMAJ4739A-TP be used as a direct replacement for SMAZ9V1-TP?

A: Yes. Both parts share identical Zener voltage (9.1 V), tolerance (±5%), power rating (1 W), package type (DO-214AC), and operating temperature range (-65°C to 150°C). The impedance increases from 4 Ohms to 5 Ohms and reverse leakage current increases from 5 µA to 10 µA at 7 V. These variations remain within acceptable operational parameters for standard voltage regulation and transient suppression circuits.

Q: What is the difference between SMAZ9V1-13-F and SMAZ9V1-TP?

A: The primary difference is manufacturer: SMAZ9V1-13-F is manufactured by Diodes Incorporated while SMAZ9V1-TP is manufactured by Micro Commercial Co. All electrical specifications are identical, including Zener voltage (9.1 V), impedance (4 Ohms), reverse leakage current (5 µA @ 7 V), and forward voltage (1.2 V @ 200 mA). Package type (DO-214AC, SMA) and compliance ratings are equivalent.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the DO-214AC (SMA/SMAJ) package type, which maintains identical physical dimensions and land pattern requirements. Surface mount assembly equipment and reflow processes are compatible across all three part numbers.

Q: Which substitute part has the lowest reverse leakage current?

A: Both SMAZ9V1-TP and SMAZ9V1-13-F specify 5 µA reverse leakage current at 7 V. SMAJ4739A-TP specifies 10 µA at the same voltage, representing a higher leakage characteristic.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. SMAZ9V1-TP, SMAJ4739A-TP, and SMAZ9V1-13-F are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. REACH status is Unaffected for all three parts.

Q: What is the significance of the impedance difference between SMAZ9V1-TP (4 Ohms) and SMAJ4739A-TP (5 Ohms)?

A: Impedance affects the dynamic response of the Zener diode during transient voltage events. The 1 Ohm difference represents a 25% increase but remains within acceptable limits for most voltage regulation and transient suppression applications. Circuit-specific analysis is required only if impedance characteristics are critical to application performance.

Q: Can these parts be used interchangeably in high-frequency applications?

A: All three parts are rated for identical operating temperature ranges and power dissipation. Frequency response characteristics are not specified in the provided parameters. Application-specific validation is required for high-frequency circuit implementations.