MM5Z11V Equivalent & Substitute Parts

Part Overview

The MM5Z11V is an 11 V Zener diode manufactured by onsemi, rated for 200 mW power dissipation in a surface mount SOD-523F package. This component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts must maintain electrical equivalence across critical parameters including nominal Zener voltage, tolerance, power rating, and thermal operating range while accommodating package variations where applicable.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	11	V
Tolerance	±5%	—
Power - Max	200	mW
Impedance (Max)	20	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 8 V
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOD-523F	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MM5Z11V is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Zener (Nom): Must equal 11 V
Tolerance: Must be ±5% or tighter (±2% acceptable)
Current - Reverse Leakage @ Vr: Must equal or be lower than 100 nA @ 8 V
Impedance (Max): Must equal or be lower than 20 Ohms
Operating Temperature Range: Must encompass or exceed -55°C to 150°C
Mounting Type: Must be Surface Mount
Moisture Sensitivity Level: Must be 1 (Unlimited) or equivalent

Secondary Considerations:

Power - Max: Substitute parts rated at 200 mW or higher are acceptable
Package / Case: SOD-523F is preferred; SOD-523, SOD-123F, and SOD-123 packages are acceptable with mechanical verification
Product Status: Active status preferred; obsolete status acceptable only if all electrical parameters match

Substitute parts are grouped by package type and power rating to facilitate selection based on specific application constraints.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Impedance (Max)	Leakage @ Vr	Temp Range	Package	Status
MM5Z11V	onsemi	11 V	±5%	200 mW	20 Ω	100 nA @ 8 V	-55 to 150°C	SOD-523F	Obsolete
MMSZ11T1G	onsemi	11 V	±5%	500 mW	20 Ω	100 nA @ 8 V	-55 to 150°C	SOD-123	Active
BZT52C11T-TP	Micro Commercial Co	11 V	±5%	100 mW	20 Ω	100 nA @ 8 V	-65 to 150°C	SOD-523	Active
BZT52H-C11,115	Nexperia USA Inc.	11 V	±5%	375 mW	10 Ω	100 nA @ 8 V	-65 to 150°C	SOD-123F	Active
BZX584C11_R1_00001	Panjit International Inc.	11 V	±5%	200 mW	20 Ω	100 nA @ 8 V	-55 to 150°C	SOD-523	Active
BZX585-B11,115	Nexperia USA Inc.	11 V	±2%	300 mW	10 Ω	100 nA @ 8 V	-65 to 150°C	SOD-523	Active
BZX585-B11,135	Nexperia USA Inc.	11 V	±2%	300 mW	10 Ω	100 nA @ 8 V	-65 to 150°C	SOD-523	Active
BZX585-C11,115	Nexperia USA Inc.	11 V	±5%	300 mW	10 Ω	100 µA @ 8 V	-65 to 150°C	SOD-523	Active
BZX585-C11,135	Nexperia USA Inc.	11 V	±5%	300 mW	10 Ω	100 µA @ 8 V	-65 to 150°C	SOD-523	Active
BZX84J-B11,115	Nexperia USA Inc.	11 V	±2%	550 mW	10 Ω	100 nA @ 8 V	-65 to 150°C	SOD-323F	Active
BZX84J-C11,115	Nexperia USA Inc.	11 V	±5%	550 mW	10 Ω	100 nA @ 8 V	-65 to 150°C	SOD-323F	Active

Engineering Selection Recommendations

Direct Electrical Equivalent (Same Power Rating):

BZX584C11_R1_00001 (Panjit International Inc.) is the closest electrical equivalent to the MM5Z11V. Both components share identical nominal Zener voltage (11 V), tolerance (±5%), power rating (200 mW), impedance (20 Ω), and reverse leakage current (100 nA @ 8 V). The operating temperature range matches (-55 to 150°C). The package is SOD-523, which is mechanically compatible with the original SOD-523F specification. This part is currently in active production status with 5,959 units in stock.

Higher Power Rating Alternatives (Same Package Family):

BZX585-C11,115 and BZX585-C11,135 (Nexperia USA Inc.) provide 300 mW power dissipation in SOD-523 packaging. Both maintain 11 V nominal Zener voltage and ±5% tolerance. These parts feature improved impedance characteristics (10 Ω versus 20 Ω) and extended operating temperature range (-65 to 150°C). Both are AEC-Q100 qualified for automotive applications. BZX585-C11,115 is available in Cut Tape & Digi-Reel packaging with 6,200 units in stock; BZX585-C11,135 is available in Tape & Reel with 10,883 units in stock.

Alternative Package Options:

MMSZ11T1G (onsemi) offers 500 mW power dissipation in SOD-123 packaging with identical electrical specifications to the MM5Z11V (11 V, ±5%, 100 nA @ 8 V leakage). This part is in active production with 3,730 units in stock. Package transition from SOD-523F to SOD-123 requires mechanical verification for board layout compatibility.

BZX84J-C11,115 (Nexperia USA Inc.) provides 550 mW power dissipation in SOD-323F packaging with 11 V nominal voltage, ±5% tolerance, and AEC-Q101 automotive qualification. This part is in active production with 883 units in stock.

Lower Power Rating Alternative:

BZT52C11T-TP (Micro Commercial Co) is rated for 100 mW in SOD-523 packaging. This part is suitable only for applications where the 200 mW power requirement can be reduced. It maintains 11 V nominal voltage, ±5% tolerance, and extends the operating temperature range to -65 to 150°C. This part is in active production with 14,861 units in stock.

All recommended substitutes are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0050, matching the regulatory status of the original MM5Z11V.

Frequently Asked Questions (FAQ)

Q: Can I use BZX585-C11,115 as a direct replacement for MM5Z11V?

A: BZX585-C11,115 is electrically compatible with the MM5Z11V for the critical parameters of Zener voltage (11 V), tolerance (±5%), and reverse leakage current (100 nA @ 8 V). The primary difference is the package type: BZX585-C11,115 uses SOD-523 while the MM5Z11V uses SOD-523F. Both packages are mechanically similar and typically interchangeable on standard PCB layouts. The higher power rating (300 mW versus 200 mW) and improved impedance (10 Ω versus 20 Ω) make this part suitable for applications requiring enhanced thermal performance.

Q: What is the difference between BZX585-B11,115 and BZX585-C11,115?

A: Both parts are manufactured by Nexperia USA Inc. and share identical electrical specifications except for tolerance: BZX585-B11,115 has ±2% tolerance while BZX585-C11,115 has ±5% tolerance. Both are rated for 300 mW in SOD-523 packaging with 11 V nominal Zener voltage. The ±2% tolerance of the B-series part provides tighter voltage regulation, which is beneficial for precision applications. Both are AEC-Q100 qualified for automotive use.

Q: Is MMSZ11T1G compatible with the MM5Z11V?

A: MMSZ11T1G is electrically equivalent to the MM5Z11V across all critical parameters: 11 V nominal Zener voltage, ±5% tolerance, 100 nA @ 8 V reverse leakage, and -55 to 150°C operating temperature range. The primary difference is the package: MMSZ11T1G uses SOD-123 while the MM5Z11V uses SOD-523F. The SOD-123 package is larger than SOD-523F, so board layout verification is required before substitution. MMSZ11T1G offers higher power dissipation (500 mW versus 200 mW).

Q: Why do some substitute parts have lower reverse leakage current specifications?

A: Reverse leakage current is specified at a particular reverse voltage (8 V in this case). Parts with lower leakage current specifications (such as 100 nA versus 100 µA) provide superior performance in applications sensitive to leakage, such as precision analog circuits. Lower leakage is not a limitation for substitution; it represents an improvement over the original specification.

Q: Can I use BZT52C11T-TP as a substitute if my application only requires 100 mW?

A: BZT52C11T-TP is electrically compatible with the MM5Z11V for Zener voltage (11 V), tolerance (±5%), and reverse leakage current (100 nA @ 8 V). However, this part is rated for only 100 mW power dissipation, which is half the original 200 mW rating. Substitution is appropriate only if the actual power dissipation in your application is confirmed to be below 100 mW. Using an undersized component for higher power levels will result in excessive junction temperature and premature failure.

Q: What does AEC-Q100 and AEC-Q101 qualification mean?

A: AEC-Q100 and AEC-Q101 are automotive electronics qualification standards. AEC-Q100 applies to discrete semiconductors including diodes, while AEC-Q101 applies to optoelectronic devices. Parts bearing these qualifications have undergone rigorous testing for reliability, temperature cycling, and performance consistency required for automotive applications. These certifications are not required for the MM5Z11V but are present on several substitute parts, indicating enhanced quality assurance.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed in this reference are RoHS3 compliant, matching the regulatory status of the original MM5Z11V. RoHS3 compliance indicates that the parts do not contain restricted substances including lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers.

Q: What is the significance of the impedance parameter?

A: Impedance (Zzt) represents the dynamic impedance of the Zener diode at the specified test current. Lower impedance values indicate better voltage regulation characteristics and reduced voltage ripple across the diode. The MM5Z11V has a maximum impedance of 20 Ω, while several substitute parts offer 10 Ω impedance, providing superior regulation performance. For applications requiring tight voltage stability, lower impedance substitutes are preferred.

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