DL5222B-TP Equivalent & Substitute Parts

Part Overview

The DL5222B-TP is a Zener diode rated at 2.5 V with 500 mW power dissipation in a Mini MELF surface mount package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and component sourcing in applications requiring 2.5 V Zener regulation.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	2.5 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max)	30 Ohms
Current - Reverse Leakage @ Vr	100 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA
Operating Temperature Range	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the DL5222B-TP is determined by the following critical parameters:

Electrical Parameters (Must Match):

Zener voltage: 2.5 V nominal
Tolerance: ±5%
Maximum power dissipation: 500 mW
Maximum impedance: 30 Ohms
Reverse leakage current: 100 µA @ 1 V
Forward voltage: 1.1 V @ 200 mA

Mechanical Parameters (Must Match):

Mounting type: Surface Mount
Package compatibility: DO-213AC, MINI-MELF, SOD-80 variants

Compliance Parameters (Must Match):

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories:

Parametric Equivalents (Same Package Family): Parts maintaining identical electrical specifications and Mini MELF packaging, suitable for direct board-level replacement.
Functional Equivalents (Alternative Package): Parts meeting all electrical specifications but utilizing different surface mount packages (SOD-123), requiring PCB layout modification.

Parameter Comparison

Parameter	DL5222B-TP	MMSZ5222B-TP	TZM5222B-GS08	TZM5222B-GS18
Manufacturer	Micro Commercial Co	Micro Commercial Co	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - Zener (Nom)	2.5 V	2.5 V	2.5 V	2.5 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	30 Ohms	30 Ohms	30 Ohms	30 Ohms
Current - Reverse Leakage @ Vr	100 µA @ 1 V	100 µA @ 1 V	100 µA @ 1 V	100 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	Not specified	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature Range	-65°C ~ 175°C	-55°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80	SOD-123	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Board-Level Replacement (No PCB Modification Required):

The TZM5222B-GS08 and TZM5222B-GS18 are parametric equivalents to the DL5222B-TP. Both parts maintain identical electrical specifications, Mini MELF packaging, and operating temperature range (-65°C ~ 175°C). Both are manufactured by Vishay General Semiconductor and carry active product status with ROHS3 compliance. The TZM5222B-GS08 offers higher inventory availability (27,600 units) compared to TZM5222B-GS18 (692 units).

For Applications Permitting Package Substitution:

The MMSZ5222B-TP is a functional equivalent manufactured by Micro Commercial Co in SOD-123 package. This part meets all electrical specifications but operates within a reduced temperature range (-55°C ~ 150°C) compared to the original DL5222B-TP. PCB layout modification is required for SOD-123 package accommodation. This option is suitable for applications not requiring the full -65°C lower temperature limit.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), ensuring regulatory and handling consistency with the original component.

Frequently Asked Questions (FAQ)

Q: Can the MMSZ5222B-TP be used as a direct replacement for the DL5222B-TP?

A: The MMSZ5222B-TP is electrically equivalent but uses a different package (SOD-123 versus Mini MELF). Direct board-level replacement is not possible without PCB redesign. Additionally, the operating temperature range is reduced to -55°C ~ 150°C, which may not be suitable for applications requiring the full -65°C lower limit of the original part.

Q: What is the difference between TZM5222B-GS08 and TZM5222B-GS18?

A: Both parts are parametric equivalents with identical electrical specifications and Mini MELF packaging. The primary difference is inventory availability and packaging configuration (tape reel variant designation). Both are suitable for direct replacement of the DL5222B-TP.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The DL5222B-TP and all listed substitute parts (MMSZ5222B-TP, TZM5222B-GS08, TZM5222B-GS18) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Which substitute part offers the best availability?

A: The TZM5222B-GS08 offers the highest inventory availability at 27,600 units in stock, compared to 692 units for TZM5222B-GS18 and 664 units for MMSZ5222B-TP.

Q: Can I use a substitute part with a narrower operating temperature range?

A: The MMSZ5222B-TP operates from -55°C ~ 150°C, which is narrower than the original DL5222B-TP range of -65°C ~ 175°C. Use this part only if your application does not require operation below -55°C or above 150°C.

Q: Do all substitute parts maintain the same electrical performance?

A: Yes. All substitute parts maintain 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.

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