MMSZ5260B Equivalent & Substitute Parts

Part Overview

The MMSZ5260B is a 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 43 V with a maximum power dissipation of 500 mW in a compact SOD-123F package. The device is classified as Active product status and maintains full compliance with RoHS3 and REACH regulations. 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 (Nominal)	43	V
Power - Maximum	500	mW
Tolerance	±5	%
Impedance (Maximum)	93	Ohms
Current - Reverse Leakage @ 33 V	100	nA
Voltage - Forward (Maximum) @ 10 mA	900	mV
Operating Temperature Range	-65 to 150	°C
Package Type	SOD-123F	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the MMSZ5260B is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part MMSZ5260B RHG maintains identical specifications in the following key areas:

Zener voltage rating: 43 V nominal
Power dissipation capability: 500 mW maximum
Voltage tolerance: ±5%
Dynamic impedance: 93 Ohms maximum
Reverse leakage current: 100 nA @ 33 V
Forward voltage drop: 900 mV @ 10 mA
Operating temperature range: -65°C to 150°C
Package and mounting configuration: SOD-123F surface mount

Both parts are manufactured by Taiwan Semiconductor Corporation and share the same base product number (MMSZ5260). The substitute part carries an additional RHG designation, which represents a variant within the same product family with identical performance characteristics.

Parameter Comparison

Parameter	MMSZ5260B	MMSZ5260B RHG	Match
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	✓
Category	Diodes, Zener	Diodes, Zener	✓
Voltage - Zener (Nom)	43 V	43 V	✓
Tolerance	±5%	±5%	✓
Power - Max	500 mW	500 mW	✓
Impedance (Max)	93 Ohms	93 Ohms	✓
Current - Reverse Leakage @ Vr	100 nA @ 33 V	100 nA @ 33 V	✓
Voltage - Forward (Max) @ If	900 mV @ 10 mA	Not specified in substitute data	—
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	✓
Package / Case	SOD-123F	SOD-123F	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

Both the MMSZ5260B and MMSZ5260B RHG are Active products with full RoHS3 compliance and REACH unaffected status, making them suitable for applications requiring regulatory adherence. The MMSZ5260B RHG variant carries an MSL (Moisture Sensitivity Level) rating of 1 (Unlimited), indicating superior moisture resistance characteristics compared to the standard MMSZ5260B.

Selection between these parts should be based on inventory availability and supply chain requirements. The MMSZ5260B RHG currently maintains higher inventory levels (6933 Pcs) compared to the MMSZ5260B (886 Pcs), making it the preferred choice for high-volume procurement or extended lead-time mitigation. Both parts are electrically and mechanically interchangeable within the specified parameter tolerances.

Frequently Asked Questions (FAQ)

Q: Are the MMSZ5260B and MMSZ5260B RHG directly interchangeable?

A: Yes. Both parts share identical electrical specifications including Zener voltage (43 V), power rating (500 mW), tolerance (±5%), impedance (93 Ohms maximum), and operating temperature range (-65°C to 150°C). Both use the SOD-123F surface mount package and are manufactured by Taiwan Semiconductor Corporation.

Q: What does the RHG designation indicate?

A: The RHG designation represents a variant within the MMSZ5260 product family. It carries an MSL rating of 1 (Unlimited), indicating enhanced moisture resistance. This designation does not affect electrical performance or package compatibility.

Q: Can I use MMSZ5260B RHG as a drop-in replacement for MMSZ5260B?

A: Yes. The MMSZ5260B RHG functions as a direct substitute with no circuit modifications required. All critical parameters match the original specification, and the SOD-123F package dimensions and pin configuration are identical.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the MMSZ5260B and MMSZ5260B RHG are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in moisture sensitivity between these parts?

A: The MMSZ5260B RHG carries an MSL rating of 1 (Unlimited), indicating no moisture sensitivity limitations. The standard MMSZ5260B does not specify an MSL rating in the provided data. For applications in high-humidity environments or with extended storage periods, the MMSZ5260B RHG is the preferred selection.

Q: Are there any differences in reverse leakage current specifications?

A: No. Both parts specify identical reverse leakage current of 100 nA @ 33 V, ensuring consistent performance in voltage regulation and protection circuits.

Q: Which part should I select for new designs?

A: Both parts are Active and suitable for new designs. Selection should be based on inventory availability and supply chain considerations. The MMSZ5260B RHG offers higher inventory levels and enhanced moisture resistance characteristics.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message