MMSZ5246B Equivalent & Substitute Parts

Part Overview

The MMSZ5246B is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, designed for voltage regulation and protection applications in surface-mount configurations. This component operates at a nominal Zener voltage of 16 V with a maximum power dissipation of 500 mW in the SOD-123F package. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	16	V
Tolerance	±5	%
Power - Max	500	mW
Impedance (Max)	17	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 12 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 to 150	°C (TJ)
Package / Case	SOD-123F	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitute parts for the MMSZ5246B are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Zener Voltage (Vz): 16 V nominal
Tolerance: ±5%
Maximum Power Dissipation: 500 mW
Impedance (Zzt): 17 Ohms maximum
Reverse Leakage Current: 100 nA @ 12 V
Forward Voltage: 900 mV maximum @ 10 mA
Operating Temperature Range: -65°C to 150°C (TJ)
Package: SOD-123F surface mount
Manufacturer: Taiwan Semiconductor Corporation
Product Status: Active
Compliance: ROHS3 Compliant, REACH Unaffected

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. Packaging format variations (bulk versus tape & reel) do not affect electrical compatibility.

Parameter Comparison

Parameter	MMSZ5246B	MMSZ5246B RHG	Match
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	✓
Category	Diodes, Zener	Diodes, Zener	✓
Voltage - Zener (Nom)	16 V	16 V	✓
Tolerance	±5%	±5%	✓
Power - Max	500 mW	500 mW	✓
Impedance (Max)	17 Ohms	17 Ohms	✓
Current - Reverse Leakage @ Vr	100 nA @ 12 V	100 nA @ 12 V	✓
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	✓
Operating Temperature	-65°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)	✓
Package / Case	SOD-123F	SOD-123F	✓
Mounting Type	Surface Mount	Surface Mount	✓
Product Status	Active	Active	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Packaging Format	Standard	Tape & Reel (TR)	Functional Equivalent

Engineering Selection Recommendations

The MMSZ5246B RHG is a direct parametric equivalent to the MMSZ5246B. Both components are manufactured by Taiwan Semiconductor Corporation and share identical electrical specifications, operating temperature range, and package configuration. The primary distinction is packaging format: MMSZ5246B RHG is supplied in Tape & Reel format, while the base MMSZ5246B is supplied in standard packaging.

Both parts maintain Active product status and comply with ROHS3 and REACH requirements. Selection between these variants depends on procurement requirements and assembly process specifications rather than electrical performance or functional capability. The Tape & Reel variant (RHG) is suitable for automated pick-and-place assembly operations, while the standard variant accommodates manual or alternative assembly methods.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5246B RHG be used as a direct replacement for MMSZ5246B?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, operating temperature range, and SOD-123F package configuration. The RHG designation indicates Tape & Reel packaging format only.

Q: What is the difference between MMSZ5246B and MMSZ5246B RHG?

A: The electrical and mechanical specifications are identical. The difference is packaging format: MMSZ5246B RHG is supplied in Tape & Reel (TR) format for automated assembly, while MMSZ5246B uses standard packaging. Both are manufactured by Taiwan Semiconductor Corporation.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both MMSZ5246B and MMSZ5246B RHG are ROHS3 Compliant and REACH Unaffected.

Q: What is the operating temperature range for these Zener diodes?

A: The operating temperature range is -65°C to 150°C (TJ) for both parts.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, provided the assembly process accommodates the packaging format. MMSZ5246B RHG (Tape & Reel) is optimized for automated pick-and-place assembly, while MMSZ5246B standard packaging supports alternative assembly methods. The SOD-123F footprint and electrical performance are identical.

Q: What is the maximum power dissipation for the MMSZ5246B?

A: The maximum power dissipation is 500 mW for both the MMSZ5246B and MMSZ5246B RHG.

Q: What is the nominal Zener voltage and tolerance?

A: The nominal Zener voltage is 16 V with a tolerance of ±5% for both parts.

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