MMSZ5222B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ5222B-TP is a 2.5 V, 500 mW surface mount zener diode manufactured by Micro Commercial Co in SOD-123 packaging. This component is classified as Active and RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	2.5	V
Tolerance	±5	%
Power - Maximum	500	mW
Impedance (Maximum)	30	Ohms
Current - Reverse Leakage @ Vr	100	µA @ 1 V
Operating Temperature Range	-55 to 150	°C
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MMSZ5222B-TP are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Zener (Nominal): 2.5 V
Tolerance: ±5%
Power - Maximum: 500 mW
Impedance (Maximum): 30 Ohms
Current - Reverse Leakage @ Vr: 100 µA @ 1 V
Package / Case: SOD-123
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

All identified substitute parts meet these specifications and are therefore electrically and mechanically interchangeable with the MMSZ5222B-TP in applications requiring a 2.5 V zener diode with 500 mW power dissipation in SOD-123 surface mount packaging.

Parameter Comparison

Parameter	MMSZ5222B-TP (Micro Commercial Co)	CMHZ5222B TR PBFREE (Central Semiconductor Corp)	MMSZ5222BT1G (onsemi)
Voltage - Zener (Nominal)	2.5 V	2.5 V	2.5 V
Tolerance	±5%	±5%	±5%
Power - Maximum	500 mW	500 mW	500 mW
Impedance (Maximum)	30 Ohms	30 Ohms	30 Ohms
Current - Reverse Leakage @ Vr	100 µA @ 1 V	100 µA @ 1 V	100 µA @ 1 V
Operating Temperature Range	-55°C to 150°C	150°C (Max)	-55°C to 150°C
Package / Case	SOD-123	SOD-123	SOD-123
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—MMSZ5222B-TP, CMHZ5222B TR PBFREE, and MMSZ5222BT1G—are Active products with ROHS3 compliance and REACH Unaffected status, confirming regulatory alignment for current applications.

MMSZ5222B-TP (Micro Commercial Co): Primary part with 664 units in stock. Supports full operating temperature range of -55°C to 150°C. Supplied in Tape & Reel packaging.

CMHZ5222B TR PBFREE (Central Semiconductor Corp): Direct substitute with 1372 units in stock. Highest inventory availability. Supplied in Cut Tape packaging. Operating temperature maximum of 150°C is suitable for applications not requiring sub-zero operation below -55°C.

MMSZ5222BT1G (onsemi): Similar substitute with 2500 units in stock. Largest inventory availability. Supports full operating temperature range of -55°C to 150°C. Supplied in Tape & Reel packaging. Part of the MMSZ52xxxT1G series.

Selection between these parts is determined by packaging format preference (Tape & Reel versus Cut Tape), inventory availability, and operating temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can CMHZ5222B TR PBFREE replace MMSZ5222B-TP in all applications?

A: CMHZ5222B TR PBFREE is electrically equivalent and mechanically compatible. The primary difference is packaging format (Cut Tape versus Tape & Reel) and operating temperature specification. CMHZ5222B TR PBFREE specifies a maximum operating temperature of 150°C, while MMSZ5222B-TP specifies -55°C to 150°C. For applications requiring operation below -55°C, MMSZ5222B-TP or MMSZ5222BT1G are required.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on a continuous reel suitable for automated pick-and-place assembly. Cut Tape (CT) packaging supplies components on tape segments cut to specified lengths, typically for manual assembly or smaller production runs. Both formats contain the same component in SOD-123 packaging.

Q: Are all three parts RoHS3 compliant?

A: Yes. MMSZ5222B-TP, CMHZ5222B TR PBFREE, and MMSZ5222BT1G are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Which substitute part has the highest inventory?

A: MMSZ5222BT1G (onsemi) has 2500 units in stock, followed by CMHZ5222B TR PBFREE with 1372 units, and MMSZ5222B-TP with 664 units.

Q: Do these parts have identical electrical specifications?

A: Yes. All three parts share identical zener voltage (2.5 V), tolerance (±5%), power rating (500 mW), impedance (30 Ohms maximum), and reverse leakage current (100 µA @ 1 V) specifications.

Q: What is the HTSUS code for these zener diodes?

A: The HTSUS code for all three parts is 8541.10.0050, confirming classification as semiconductor diodes.

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