MMXZ5245B-TP Zener Diode 15V 200mW Equivalent & Substitute Parts

Part Overview

The MMXZ5245B-TP is a 15V, 200mW Zener diode manufactured by Micro Commercial Co in SOD-323 surface mount packaging. This component is classified as Active and maintains full RoHS3 compliance with unlimited moisture sensitivity rating (MSL 1). The part is stocked with 3225 units available.

Equivalent and substitute parts are identified based on matching or exceeding the core electrical specifications: 15V nominal Zener voltage, 200mW power dissipation capability, ±5% tolerance, and surface mount SOD-323 package compatibility. Alternative sources provide design flexibility, supply chain redundancy, and access to enhanced specifications where applicable.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	15	V
Tolerance	±5%	—
Power - Max	200	mW
Impedance (Max)	16	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 11 V	—
Voltage - Forward (Max)	1.2 V @ 100 mA	—
Operating Temperature Range	-55°C to 150°C	—
Mounting Type	Surface Mount	—
Package / Case	SOD-323	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Matching Criteria:

Zener voltage: 15V nominal
Power rating: 200mW or greater
Tolerance: ±5% or tighter
Package: SOD-323 or SOD-323F (compatible footprint)
Mounting: Surface mount
Compliance: RoHS3, REACH Unaffected

Secondary Considerations:

Operating temperature range (minimum -55°C or lower acceptable)
Reverse leakage current specifications
Forward voltage characteristics
Impedance values within acceptable range

Parts are grouped into two categories:

Direct Equivalents: Parts meeting all primary criteria with identical or superior electrical performance and matching SOD-323 package specifications.

Compatible Substitutes: Parts exceeding power rating (500mW–550mW) or featuring enhanced temperature ranges (-65°C minimum), available in SOD-323F variant packaging, suitable for applications requiring higher thermal margin or automotive qualification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Reverse Leakage @ Vr	Vf (Max)	Temp Range	Package	Grade
MMXZ5245B-TP	Micro Commercial Co	15 V	±5%	200 mW	16 Ω	100 nA @ 11 V	1.2 V @ 100 mA	-55°C to 150°C	SOD-323	Commercial
MMSZ5245BS-7-F	Diodes Incorporated	15 V	±5%	200 mW	16 Ω	100 nA @ 11 V	900 mV @ 10 mA	-65°C to 150°C	SOD-323	Commercial
DDZ9702S-7	Diodes Incorporated	15 V	±5%	200 mW	—	50 nA @ 11.4 V	900 mV @ 10 mA	-65°C to 150°C	SOD-323	Commercial
MM3Z15VB	onsemi	15 V	±2%	200 mW	28 Ω	45 nA @ 10.5 V	1 V @ 10 mA	-65°C to 150°C	SOD-323F	Commercial
MM3Z15VC	onsemi	15 V	±5%	200 mW	28 Ω	45 nA @ 10.5 V	1 V @ 10 mA	-65°C to 150°C	SOD-323F	Commercial
BZX84J-B15,115	Nexperia USA Inc.	15 V	±2%	550 mW	15 Ω	50 nA @ 10.5 V	1.1 V @ 100 mA	-65°C to 150°C	SOD-323F	Automotive
TDZ15J,115	Nexperia USA Inc.	15 V	±2%	500 mW	15 Ω	50 nA @ 10.5 V	1.1 V @ 100 mA	-55°C to 150°C	SOD-323F	Automotive
GDZ15B-HE3-08	Vishay General Semiconductor	15 V	±4%	200 mW	42 Ω	100 nA @ 11 V	—	-55°C to 150°C	SOD-323	Automotive

Engineering Selection Recommendations

Direct Substitution (Identical Specifications):

MMSZ5245BS-7-F (Diodes Incorporated) and DDZ9702S-7 (Diodes Incorporated) are direct functional equivalents to MMXZ5245B-TP. Both maintain 15V nominal voltage, ±5% tolerance, 200mW power rating, and SOD-323 package compatibility. MMSZ5245BS-7-F extends operating temperature to -65°C minimum. DDZ9702S-7 provides improved reverse leakage characteristics (50 nA vs. 100 nA). Both are Active status products with full RoHS3 compliance.

Enhanced Tolerance Substitutes:

MM3Z15VB (onsemi) provides tighter ±2% tolerance with identical 200mW power rating and extended -65°C to 150°C operating range. Package variant is SOD-323F. Reverse leakage is reduced to 45 nA. This part is suitable for applications requiring improved voltage accuracy.

MM3Z15VC (onsemi) matches MMXZ5245B-TP tolerance (±5%) with enhanced temperature range (-65°C minimum) and SOD-323F packaging. Reverse leakage specification is 45 nA.

Higher Power Rating Alternatives:

BZX84J-B15,115 (Nexperia USA Inc.) and TDZ15J,115 (Nexperia USA Inc.) exceed the 200mW specification with 550mW and 500mW ratings respectively. Both feature ±2% tolerance, automotive grade qualification (AEC-Q101), and SOD-323F packaging. These parts are suitable for applications requiring thermal margin beyond the base 200mW specification.

Automotive Grade Option:

GDZ15B-HE3-08 (Vishay General Semiconductor) is automotive qualified (AEC-Q101) with 200mW power rating, ±4% tolerance, and SOD-323 package. Operating temperature range matches the main part (-55°C to 150°C). This part is appropriate for automotive applications requiring certified component qualification.

All substitute parts maintain RoHS3 compliance and REACH Unaffected status. Selection should be based on application requirements for tolerance tightness, operating temperature range, power dissipation margin, and automotive qualification status.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5245BS-7-F replace MMXZ5245B-TP directly?

A: Yes. MMSZ5245BS-7-F is a direct functional equivalent with matching 15V nominal voltage, ±5% tolerance, and 200mW power rating. Both use SOD-323 packaging and are RoHS3 compliant. The substitute offers extended operating temperature range (-65°C minimum vs. -55°C) and improved forward voltage characteristics.

Q: What is the difference between SOD-323 and SOD-323F packages?

A: SOD-323 and SOD-323F are compatible surface mount packages with identical footprints and pin assignments. SOD-323F is a variant designation used by certain manufacturers. Parts in either package are mechanically and electrically interchangeable in standard PCB layouts.

Q: Why do some substitute parts have higher power ratings (500mW–550mW)?

A: Higher power ratings provide thermal margin for applications with elevated ambient temperatures or continuous operation near maximum current limits. These parts (BZX84J-B15,115 and TDZ15J,115) maintain the same 15V Zener voltage and are suitable for designs requiring enhanced reliability or thermal performance.

Q: Are automotive-grade parts (AEC-Q101) required for non-automotive applications?

A: No. Automotive qualification is not required for commercial applications. GDZ15B-HE3-08 and the Nexperia automotive parts are suitable for automotive use but function identically to commercial-grade equivalents in non-automotive circuits. Selection should match application requirements.

Q: What does ±2% tolerance mean compared to ±5%?

A: Tolerance specifies the allowable deviation from the nominal 15V Zener voltage. ±2% tolerance (MM3Z15VB, BZX84J-B15,115, TDZ15J,115) restricts voltage variation to ±0.3V (14.7V–15.3V). ±5% tolerance (MMXZ5245B-TP, MMSZ5245BS-7-F, DDZ9702S-7, MM3Z15VC) allows ±0.75V variation (14.25V–15.75V). Tighter tolerance is beneficial for precision voltage regulation circuits.

Q: Can I use MM3Z15VB or MM3Z15VC if my design specifies MMXZ5245B-TP?

A: Yes, with package consideration. MM3Z15VB and MM3Z15VC use SOD-323F packaging, which shares identical electrical footprint with SOD-323. Both maintain 15V nominal voltage and 200mW power rating. MM3Z15VB offers tighter ±2% tolerance; MM3Z15VC matches ±5% tolerance. Both extend operating temperature to -65°C minimum.

Q: What is reverse leakage current and why does it vary?

A: Reverse leakage current is the small current flowing through the Zener diode when reverse-biased below the Zener voltage threshold. Lower leakage (45 nA vs. 100 nA) indicates better diode quality and reduced power dissipation in standby conditions. Specification variations reflect manufacturing process differences between suppliers.

Q: Are all listed parts in stock?

A: Inventory status is provided for reference. MMXZ5245B-TP has 3225 units available. Substitute parts range from 2200 to 99170 units in stock. Verify current availability with supplier before design commitment.

Q: Which substitute offers the best overall performance?

A: Selection depends on application priorities. For tighter voltage tolerance: MM3Z15VB (±2%). For extended temperature range: MMSZ5245BS-7-F, DDZ9702S-7, MM3Z15VB, or MM3Z15VC (-65°C minimum). For higher power dissipation: BZX84J-B15,115 (550mW) or TDZ15J,115 (500mW). For automotive applications: BZX84J-B15,115, TDZ15J,115, or GDZ15B-HE3-08 (AEC-Q101 qualified).

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message