ZMM5265B-7 Equivalent & Substitute Parts

Part Overview

The ZMM5265B-7 is a 62 V, 500 mW Zener diode manufactured by Diodes Incorporated in Mini MELF surface mount packaging (DO-213AC). This component is classified as obsolete, though 2100 units remain in stock. The part operates across a temperature range of -65°C to 175°C and is ROHS3 compliant with unlimited moisture sensitivity rating.

Due to the obsolete product status of the ZMM5265B-7, identification of equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term component availability. Active alternatives with matching or superior electrical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	62	V
Tolerance	±5%	—
Power - Maximum	500	mW
Impedance (Maximum)	185	Ohms
Current - Reverse Leakage @ 47 V	100	nA
Voltage - Forward (Maximum) @ 200 mA	1.5	V
Operating Temperature Range	-65 to 175	°C
Mounting Type	Surface Mount	—
Package / Case	DO-213AC, MINI-MELF, SOD-80	—

Substitute Part Grouping Explanation

Substitution of the ZMM5265B-7 is determined by the following critical parameters:

Electrical Matching Criteria:

Voltage - Zener (Nominal): 62 V
Power - Maximum: 500 mW
Operating Temperature Range: -65°C to 175°C
Current - Reverse Leakage @ 47 V: 100 nA

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Package / Case: DO-213AC, MINI-MELF, SOD-80 (or compatible variants)

Tolerance Considerations:

Tolerance of ±5% is the baseline specification for the main part
Substitute parts with ±2%, ±5%, or ±10% tolerance are electrically compatible
Substitute parts with ±20% tolerance remain functionally compatible but with reduced precision

Substitute parts are grouped into two categories: parametric equivalents (matching all electrical specifications and impedance) and manufacturer-recommended alternatives (meeting core electrical requirements with potential variations in forward voltage or impedance).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Vf @ 200mA (V)	Package	Product Status	RoHS Status
ZMM5265B-7	Diodes Incorporated	62	±5%	500	185	1.5	DO-213AC, MINI-MELF, SOD-80	Obsolete	ROHS3 Compliant
1N5265BUR-1	Microchip Technology	62	±5%	500	185	1.1	DO-213AA	Active	RoHS non-compliant
CDLL5265	Microchip Technology	62	±20%	—	185	1.1	DO-213AB, MELF	Active	RoHS non-compliant
CDLL5265A	Microchip Technology	62	±10%	—	185	1.1	DO-213AB, MELF	Active	RoHS non-compliant
TZMB62-GS08	Vishay General Semiconductor - Diodes Division	62	±2%	500	150	1.5	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMB62-GS18	Vishay General Semiconductor - Diodes Division	62	±2%	500	150	1.5	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMC62-GS18	Vishay General Semiconductor - Diodes Division	62	±5%	500	150	1.5	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMC62-M-08	Vishay General Semiconductor - Diodes Division	62	±5%	500	150	1.5	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMC62-M-18	Vishay General Semiconductor - Diodes Division	62	±5%	500	150	1.5	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZM5265B-GS08	Vishay General Semiconductor - Diodes Division	62	±5%	500	185	1.1	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

The TZM5265B-GS08 (Vishay General Semiconductor - Diodes Division) is the optimal substitute for the ZMM5265B-7. This part maintains identical electrical specifications (62 V nominal, ±5% tolerance, 500 mW power rating, 185 Ohms impedance) and package compatibility (DO-213AC, MINI-MELF, SOD-80). The TZM5265B-GS08 is active in production status and ROHS3 compliant, ensuring long-term availability and regulatory compliance. Forward voltage is reduced to 1.1 V at 200 mA, which represents an improvement over the original specification.

Secondary Recommendations for Precision Applications:

The TZMB62-GS08 and TZMB62-GS18 (Vishay General Semiconductor - Diodes Division) offer superior tolerance performance at ±2%, compared to the original ±5% specification. Both parts maintain 62 V nominal voltage, 500 mW power rating, and compatible packaging. These parts are AEC-Q101 qualified for automotive applications and ROHS3 compliant. Impedance is reduced to 150 Ohms, which may be beneficial in certain circuit topologies.

Alternative for Tolerance-Flexible Applications:

The TZMC62-GS18, TZMC62-M-08, and TZMC62-M-18 (Vishay General Semiconductor - Diodes Division) provide active, ROHS3-compliant alternatives with matching ±5% tolerance and identical package compatibility. These parts feature 150 Ohms impedance and AEC-Q101 automotive qualification.

Microchip Technology Options:

The 1N5265BUR-1 is an active alternative with matching electrical specifications but uses DO-213AA packaging instead of Mini MELF. This part is not RoHS compliant. The CDLL5265 and CDLL5265A (Microchip Technology) are active alternatives with matching impedance but are not RoHS compliant and use DO-213AB packaging. CDLL5265A offers improved ±10% tolerance compared to CDLL5265 at ±20%.

Compliance Considerations:

For applications requiring ROHS3 compliance, select from Vishay General Semiconductor options (TZMB62-GS08, TZMB62-GS18, TZMC62-GS18, TZMC62-M-08, TZMC62-M-18, TZM5265B-GS08) or the original ZMM5265B-7. Microchip Technology alternatives (1N5265BUR-1, CDLL5265, CDLL5265A) are not RoHS compliant.

Frequently Asked Questions (FAQ)

Q: Can the ZMM5265B-7 be directly replaced with TZM5265B-GS08?

A: Yes. The TZM5265B-GS08 maintains identical nominal voltage (62 V), tolerance (±5%), power rating (500 mW), impedance (185 Ohms), and package compatibility (DO-213AC, MINI-MELF, SOD-80). The part is active in production and ROHS3 compliant.

Q: What is the difference between TZMB62-GS08 and TZMC62-GS18?

A: Both parts are 62 V, 500 mW Zener diodes in compatible packaging. TZMB62-GS08 offers ±2% tolerance with 150 Ohms impedance. TZMC62-GS18 offers ±5% tolerance with 150 Ohms impedance. Selection depends on tolerance requirements for the application.

Q: Are Microchip Technology alternatives (1N5265BUR-1, CDLL5265, CDLL5265A) suitable replacements?

A: These parts meet the core electrical specifications (62 V nominal, 100 nA reverse leakage, -65°C to 175°C operating range) but differ in packaging and compliance status. 1N5265BUR-1 uses DO-213AA instead of Mini MELF. CDLL5265 and CDLL5265A use DO-213AB packaging. All three are not RoHS compliant. Verify PCB layout compatibility before selection.

Q: What is the significance of impedance differences between substitute parts?

A: The ZMM5265B-7 specifies 185 Ohms maximum impedance. Vishay alternatives (TZMB62-GS08, TZMB62-GS18, TZMC62-GS18, TZMC62-M-08, TZMC62-M-18) feature 150 Ohms impedance, which is lower. Lower impedance improves transient response and noise filtering characteristics. TZM5265B-GS08 maintains 185 Ohms impedance, matching the original specification exactly.

Q: Does forward voltage variation affect circuit performance?

A: The ZMM5265B-7 specifies 1.5 V forward voltage at 200 mA. Substitute parts from Vishay (TZMB62, TZMC62 series) maintain 1.5 V. Microchip alternatives (1N5265BUR-1, CDLL5265, CDLL5265A) specify 1.1 V. Lower forward voltage reduces power dissipation in forward-biased conditions. Verify circuit design tolerances before substitution.

Q: Which substitute part offers the best tolerance performance?

A: TZMB62-GS08 and TZMB62-GS18 offer ±2% tolerance, superior to the original ZMM5265B-7 specification of ±5%. These parts are recommended for precision voltage regulation applications requiring tighter zener voltage control.

Q: Are automotive-qualified alternatives available?

A: Yes. TZMB62-GS08, TZMB62-GS18, TZMC62-GS18, TZMC62-M-08, and TZMC62-M-18 (all from Vishay General Semiconductor - Diodes Division) carry AEC-Q101 automotive qualification. These parts are suitable for automotive and high-reliability applications.

Q: What is the inventory status of substitute parts?

A: TZM5265B-GS08 has 2590 units in stock. TZMB62-GS08 has 13420 units. TZMB62-GS18 has 841 units. TZMC62-GS18 has 1092 units. TZMC62-M-08 has 1001 units. TZMC62-M-18 has 816 units. Microchip alternatives: 1N5265BUR-1 (804 units), CDLL5265 (926 units), CDLL5265A (807 units).

Q: Is the original ZMM5265B-7 still available for new designs?

A: The ZMM5265B-7 is classified as obsolete. Although 2100 units remain in stock, new designs should specify active alternatives to ensure long-term component availability and production continuity.

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