ZMM5225B-7 Equivalent & Substitute Parts

Part Overview

The ZMM5225B-7 is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 3 V nominal with 500 mW power dissipation in a surface mount DO-213AA package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates across the temperature range of -65°C to 175°C and complies with ROHS3 standards.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	3 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max)	29 Ohms
Current - Reverse Leakage @ Vr	50 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	DO-213AA (Glass)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the ZMM5225B-7 is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - Zener (Nom): 3 V
Power - Max: 500 mW
Impedance (Max): 29 Ohms
Operating Temperature: -65°C ~ 175°C
Package / Case: DO-213AA
Mounting Type: Surface Mount

Secondary Compatibility Factors:

Tolerance: ±5% (primary specification); tighter tolerances (±2%, ±1%) are acceptable as they represent improved performance
Current - Reverse Leakage @ Vr: 50 µA @ 1 V (main part specification); substitute parts with 30 µA @ 1 V meet or exceed this requirement
Voltage - Forward (Vf) (Max) @ If: 1.5 V @ 200 mA (main part); substitute parts with 1.1 V @ 200 mA are compatible

All substitute parts listed are manufactured by Microchip Technology and maintain active product status with military-grade qualification (MIL-PRF-19500 series), providing enhanced reliability compared to the obsolete main part.

Parameter Comparison

Parameter	ZMM5225B-7 (Vishay)	JANTX1N4372AUR-1/TR	JANTX1N4372CUR-1/TR	JANTX1N4372DUR-1/TR	JANTXV1N4372AUR-1/TR	JANTXV1N4372CUR-1/TR	JANTXV1N4372DUR-1/TR
Manufacturer	Vishay	Microchip	Microchip	Microchip	Microchip	Microchip	Microchip
Voltage - Zener (Nom)	3 V	3 V	3 V	3 V	3 V	3 V	3 V
Tolerance	±5%	±5%	±2%	±1%	±5%	±2%	±1%
Power - Max	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	29 Ohms	29 Ohms	29 Ohms	29 Ohms	29 Ohms	29 Ohms	29 Ohms
Current - Reverse Leakage @ Vr	50 µA @ 1 V	30 µA @ 1 V	30 µA @ 1 V	30 µA @ 1 V	30 µA @ 1 V	30 µA @ 1 V	30 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Package / Case	DO-213AA	DO-213AA	DO-213AA	DO-213AA	DO-213AA	DO-213AA	DO-213AA
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Grade	Commercial	Military	Military	Military	Military	Military	Military
Qualification	None specified	MIL-PRF-19500/127	MIL-PRF-19500/127	MIL-PRF-19500/127	MIL-PRF-19500/435	MIL-PRF-19500/435	MIL-PRF-19500/435
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
Inventory Status	10055 Pcs	822 Pcs	1122 Pcs	682 Pcs	756 Pcs	911 Pcs	1039 Pcs

Engineering Selection Recommendations

Product Status Consideration: The ZMM5225B-7 is classified as obsolete. All substitute parts listed are active products manufactured by Microchip Technology, ensuring long-term availability and continued manufacturing support.

Compliance and Certification: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the environmental standards of the original part. The substitute parts carry military-grade qualification under MIL-PRF-19500 series standards, providing enhanced reliability assurance beyond the commercial-grade original part.

Tolerance Selection:

JANTX1N4372AUR-1/TR and JANTXV1N4372AUR-1/TR: ±5% tolerance, directly equivalent to ZMM5225B-7 tolerance specification
JANTX1N4372CUR-1/TR and JANTXV1N4372CUR-1/TR: ±2% tolerance, tighter specification for improved voltage accuracy
JANTX1N4372DUR-1/TR and JANTXV1N4372DUR-1/TR: ±1% tolerance, highest precision option for critical voltage regulation applications

Qualification Standard Selection:

JANTX series (MIL-PRF-19500/127): Standard military qualification
JANTXV series (MIL-PRF-19500/435): Enhanced military qualification with extended screening

All substitute parts are electrically and mechanically compatible with the ZMM5225B-7 in DO-213AA surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can JANTX1N4372 series parts directly replace ZMM5225B-7 in existing designs?

A: Yes. All JANTX1N4372 and JANTXV1N4372 variants maintain identical zener voltage (3 V), power rating (500 mW), impedance (29 Ohms), operating temperature range (-65°C ~ 175°C), and DO-213AA package specifications. The parts are pin-compatible and functionally equivalent for surface mount applications.

Q: What is the difference between JANTX and JANTXV series?

A: Both series are military-grade Zener diodes with identical electrical parameters. The primary difference is the qualification standard: JANTX series complies with MIL-PRF-19500/127, while JANTXV series complies with MIL-PRF-19500/435. JANTXV represents enhanced military qualification with more rigorous screening requirements.

Q: Which tolerance option should be selected?

A: Selection depends on application requirements. The ±5% tolerance variants (JANTX1N4372AUR-1/TR, JANTXV1N4372AUR-1/TR) match the original ZMM5225B-7 specification. Applications requiring tighter voltage regulation should use ±2% (CUR) or ±1% (DUR) variants.

Q: Are the reverse leakage current differences significant?

A: The substitute parts specify 30 µA @ 1 V reverse leakage, compared to 50 µA @ 1 V for the ZMM5225B-7. This represents improved leakage performance in the substitute parts, which is compatible with the original specification.

Q: What is the significance of forward voltage differences?

A: The ZMM5225B-7 specifies 1.5 V @ 200 mA forward voltage, while substitute parts specify 1.1 V @ 200 mA. The lower forward voltage in substitute parts indicates improved forward conduction characteristics and is compatible with the original specification.

Q: Is Tape & Reel packaging compatible with bulk packaging applications?

A: Tape & Reel (TR) packaging is standard for automated surface mount assembly. If manual or bulk handling is required, confirm packaging compatibility with assembly processes. The electrical and mechanical specifications remain identical regardless of packaging format.

Q: Are all substitute parts in active production?

A: Yes. All JANTX1N4372 and JANTXV1N4372 variants are classified as active products with current inventory availability, ensuring reliable sourcing for production and maintenance applications.

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