MMSZ5246C-TP Equivalent & Substitute Parts

Part Overview

The MMSZ5246C-TP is a 16 V, 500 mW Zener diode manufactured by Micro Commercial Co in SOD-123 surface mount packaging. This component is classified as an interface diode and maintains Active product status. The MMSZ5246C-TP is specified with ±2% voltage tolerance and operates across the temperature range of -55°C to 150°C. Substitute parts are necessary when the original part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when equivalent electrical performance can be achieved with parts from alternative manufacturers while maintaining design specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	16	V
Power - Maximum	500	mW
Tolerance	±2%	-
Impedance (Maximum)	17	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 12 V
Voltage - Forward (Maximum) @ If	900	mV @ 10 mA
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	-
Package / Case	SOD-123	-

Substitute Part Grouping Explanation

Substitution of the MMSZ5246C-TP is determined by the following critical parameters: nominal Zener voltage of 16 V, maximum power dissipation capability, surface mount mounting type, and operating temperature range. All substitute parts listed maintain the 16 V nominal Zener voltage specification. Substitute parts are grouped into two categories based on power rating and packaging format:

Category 1: Reduced Power Rating (200 mW) Parts with lower maximum power dissipation are suitable only when circuit design permits operation below 500 mW. The DDZ9703S-7 operates at 200 mW maximum and uses SOD-323 packaging, representing a different form factor.

Category 2: Equivalent Power Rating (500 mW) Parts maintaining 500 mW maximum power dissipation with SOD-123 packaging provide direct functional equivalence. These include MMSZ5246B-E3-08, MMSZ4703-E3-08, MMSZ4703-E3-18, and MMSZ4703-G3-08.

Tolerance variations exist among substitutes (±5% versus ±2%), and reverse leakage current specifications differ. All substitute parts maintain Active product status and surface mount configuration.

Parameter Comparison

Parameter	MMSZ5246C-TP	DDZ9703S-7	MMSZ4703-E3-08	MMSZ4703-E3-18	MMSZ4703-G3-08	MMSZ5246B-E3-08
Manufacturer	Micro Commercial Co	Diodes Incorporated	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - Zener (Nom)	16 V	16 V	16 V	16 V	16 V	16 V
Tolerance	±2%	±5%	±5%	±5%	±5%	±5%
Power - Max	500 mW	200 mW	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	17 Ohms	-	-	-	-	17 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 12 V	50 nA @ 12.1 V	50 nA @ 12.1 V	50 nA @ 12.1 V	50 nA @ 12.1 V	100 nA @ 12 V
Voltage - Forward (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	-	-	-	-
Operating Temperature	-55°C ~ 150°C	-65°C ~ 150°C	-	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123	SOD-323	SOD-123	SOD-123	SOD-123	SOD-123
Packaging Format	Bulk	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
Product Status	Active	Active	Active	Active	Active	Active
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Functional Replacement (500 mW, SOD-123): MMSZ5246B-E3-08, MMSZ4703-E3-08, MMSZ4703-E3-18, and MMSZ4703-G3-08 maintain equivalent power dissipation and package format. MMSZ5246B-E3-08 preserves the 17 Ohm impedance specification and 100 nA reverse leakage current of the original part. All four parts are Active status and ROHS3 compliant.

For Alternative Packaging (Tape & Reel Format): MMSZ5246B-E3-08, MMSZ4703-E3-18, and MMSZ4703-G3-08 are supplied in Tape & Reel format, suitable for automated assembly processes. MMSZ4703-E3-08 is available in Cut Tape & Digi-Reel® format.

For Reduced Power Applications (200 mW): DDZ9703S-7 operates at 200 mW maximum power and uses SOD-323 packaging. This part is suitable only when circuit design specifications permit lower power dissipation. DDZ9703S-7 is ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Tolerance Considerations: The MMSZ5246C-TP specifies ±2% tolerance. All substitute parts listed operate at ±5% tolerance. Circuit designs requiring ±2% tolerance precision must account for this specification difference.

Frequently Asked Questions (FAQ)

Q: Can DDZ9703S-7 replace MMSZ5246C-TP in all applications? A: DDZ9703S-7 operates at 200 mW maximum power versus 500 mW for the MMSZ5246C-TP. Substitution is valid only when circuit design permits operation at or below 200 mW. Additionally, DDZ9703S-7 uses SOD-323 packaging instead of SOD-123, requiring PCB layout modification.

Q: What is the impact of tolerance differences between MMSZ5246C-TP (±2%) and substitute parts (±5%)? A: The MMSZ5246C-TP maintains tighter voltage tolerance at ±2%, while all listed substitutes operate at ±5%. For applications requiring precise Zener voltage regulation, this specification difference must be evaluated against circuit performance requirements.

Q: Are all substitute parts ROHS3 compliant? A: All substitute parts listed are ROHS3 compliant. The original MMSZ5246C-TP does not specify RoHS status in the provided data.

Q: What packaging formats are available for substitutes? A: MMSZ5246C-TP is supplied in Bulk format. Substitute parts are available in Tape & Reel (TR) format (DDZ9703S-7, MMSZ4703-E3-18, MMSZ4703-G3-08, MMSZ5246B-E3-08) and Cut Tape & Digi-Reel® format (MMSZ4703-E3-08). Packaging selection depends on manufacturing process requirements.

Q: Do substitute parts maintain the same operating temperature range? A: MMSZ5246C-TP operates from -55°C to 150°C. DDZ9703S-7 extends the lower temperature limit to -65°C. MMSZ4703-E3-08 does not specify operating temperature. MMSZ4703-E3-18, MMSZ4703-G3-08, and MMSZ5246B-E3-08 maintain the -55°C to 150°C range.

Q: Which substitute provides the closest electrical match to MMSZ5246C-TP? A: MMSZ5246B-E3-08 provides the closest electrical match, maintaining 500 mW power rating, 17 Ohm impedance, and 100 nA reverse leakage current specifications. The primary difference is ±5% tolerance versus ±2% for the original part.

Q: Are all parts classified as Active status? A: Yes, all parts listed, including the main part MMSZ5246C-TP and all substitutes, maintain Active product status.

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