ZMM5227B-13 Equivalent & Substitute Parts

Part Overview

The ZMM5227B-13 is a Zener diode rated at 3.6 V nominal with 500 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division in DO-213AA surface mount package. This part is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3.6	V
Tolerance	±5%	—
Power - Max	500	mW
Impedance (Max)	24	Ohms
Current - Reverse Leakage @ Vr	15	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 200 mA
Operating Temperature	-65 to 175	°C
Mounting Type	Surface Mount	—
Package / Case	DO-213AA (Glass)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the ZMM5227B-13 is determined by the following critical parameters:

Primary Electrical Criteria:

Voltage - Zener (Nom): 3.6 V (exact match required)
Power - Max: 500 mW (exact match required)
Impedance (Max): 24 Ohms (exact match required)
Operating Temperature: -65°C to 175°C (exact match required)

Secondary Electrical Criteria:

Tolerance: ±5% or tighter (±5%, ±2%, ±1% all acceptable)
Current - Reverse Leakage @ Vr: 15 µA @ 1 V or lower (substitute parts at 3 µA @ 1 V meet this requirement)
Voltage - Forward (Vf) (Max) @ If: 1.5 V @ 200 mA or lower (substitute parts at 1.1 V @ 200 mA meet this requirement)

Mechanical Criteria:

Package / Case: DO-213AA (exact match required)
Mounting Type: Surface Mount (exact match required)

Compliance Criteria:

RoHS Status: ROHS3 Compliant (exact match required)

All substitute parts listed are manufactured by Microchip Technology and are classified as Active products with military-grade qualification (MIL-PRF-19500/437 or MIL-PRF-19500/127). These substitutes meet or exceed the electrical performance of the obsolete ZMM5227B-13.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power Max	Zzt (Max)	Reverse Leakage @ Vr	Vf (Max) @ If	Temp Range	Package	Status	Grade
ZMM5227B-13	Vishay	3.6 V	±5%	500 mW	24 Ω	15 µA @ 1 V	1.5 V @ 200 mA	-65 to 175°C	DO-213AA	Obsolete	Commercial
JAN1N5519BUR-1/TR	Microchip	3.6 V	±5%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JAN1N5519CUR-1/TR	Microchip	3.6 V	±2%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JAN1N5519DUR-1/TR	Microchip	3.6 V	±1%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JAN1N747AUR-1/TR	Microchip	3.6 V	±5%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JAN1N747CUR-1/TR	Microchip	3.6 V	±2%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JAN1N747DUR-1/TR	Microchip	3.6 V	±1%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JANTX1N5519BUR-1/TR	Microchip	3.6 V	±5%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JANTX1N5519CUR-1/TR	Microchip	3.6 V	±2%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JANTX1N5519DUR-1/TR	Microchip	3.6 V	±1%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military
JANTX1N747AUR-1/TR	Microchip	3.6 V	±5%	500 mW	24 Ω	3 µA @ 1 V	1.1 V @ 200 mA	-65 to 175°C	DO-213AA	Active	Military

Engineering Selection Recommendations

All listed substitute parts are direct electrical and mechanical equivalents to the ZMM5227B-13. Selection among the available options is based on the following criteria:

Product Status: All substitute parts are classified as Active, ensuring ongoing availability and manufacturing support. The ZMM5227B-13 is obsolete and should be replaced in new designs and production.

Compliance & Certification: All substitute parts are ROHS3 Compliant and REACH Unaffected. Military-grade substitutes carry MIL-PRF-19500/437 or MIL-PRF-19500/127 qualification, providing enhanced reliability for critical applications.

Tolerance Selection: Choose tolerance based on circuit requirements:

±5% tolerance (JAN1N5519BUR-1/TR, JAN1N747AUR-1/TR, JANTX1N5519BUR-1/TR, JANTX1N747AUR-1/TR) for general-purpose applications
±2% tolerance (JAN1N5519CUR-1/TR, JAN1N747CUR-1/TR, JANTX1N5519CUR-1/TR) for improved voltage regulation accuracy
±1% tolerance (JAN1N5519DUR-1/TR, JAN1N747DUR-1/TR, JANTX1N5519DUR-1/TR, JANTX1N747AUR-1/TR) for precision voltage reference applications

Part Number Prefix Distinction: JANTX-prefixed parts (JANTX1N5519BUR-1/TR, JANTX1N5519CUR-1/TR, JANTX1N5519DUR-1/TR, JANTX1N747AUR-1/TR) indicate extended temperature screening and are suitable for applications requiring enhanced reliability margins.

Inventory Availability: All substitute parts maintain active stock levels ranging from 701 to 1087 pieces, ensuring supply continuity.

Frequently Asked Questions (FAQ)

Q: Can JAN1N5519BUR-1/TR directly replace ZMM5227B-13 in existing designs?

A: Yes. JAN1N5519BUR-1/TR is a direct parametric equivalent with identical Zener voltage (3.6 V), power rating (500 mW), impedance (24 Ohms), and operating temperature range (-65°C to 175°C). Both use DO-213AA surface mount packaging. The substitute exhibits superior performance characteristics with lower reverse leakage current (3 µA vs. 15 µA @ 1 V) and lower forward voltage drop (1.1 V vs. 1.5 V @ 200 mA).

Q: What is the difference between JAN and JANTX part number prefixes?

A: JAN-prefixed parts (JAN1N5519BUR-1/TR, JAN1N5519CUR-1/TR, JAN1N5519DUR-1/TR) meet MIL-PRF-19500/437 qualification. JANTX-prefixed parts (JANTX1N5519BUR-1/TR, JANTX1N5519CUR-1/TR, JANTX1N5519DUR-1/TR, JANTX1N747AUR-1/TR) meet the same qualification with extended temperature screening and burn-in testing, providing additional reliability assurance for demanding applications.

Q: How do tolerance ratings affect part selection?

A: Tolerance ratings (±5%, ±2%, ±1%) define the acceptable deviation from the nominal 3.6 V Zener voltage. Applications requiring tighter voltage regulation should specify ±2% or ±1% tolerance parts. General-purpose voltage regulation applications accept ±5% tolerance. All tolerance options maintain identical power dissipation and impedance characteristics.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the significance of the DO-213AA package specification?

A: DO-213AA is a surface mount glass package for Zener diodes. All substitute parts use identical DO-213AA packaging, ensuring mechanical compatibility with existing PCB layouts, solder reflow profiles, and automated assembly processes. No PCB redesign is required.

Q: Why does the ZMM5227B-13 show higher reverse leakage current than substitutes?

A: The ZMM5227B-13 specifies 15 µA @ 1 V reverse leakage, while all Microchip substitutes specify 3 µA @ 1 V. This difference reflects manufacturing process improvements in the substitute parts. Lower reverse leakage is beneficial for precision voltage reference applications and reduces standby power consumption.

Q: Can parts with different tolerance ratings be mixed in the same circuit?

A: Mixing tolerance ratings is not recommended. Maintain consistent tolerance specifications across all Zener diodes in a given circuit to ensure predictable voltage regulation performance and circuit behavior across temperature and load variations.

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