MMSZ5261C-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ5261C-TP is a 47 V, 500 mW Zener diode manufactured by Micro Commercial Co, designed for surface mount applications in SOD-123 packaging. This component is classified as an interface diode and maintains Active product status. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

MMSZ5261C-TP

Micro Commercial CoIn Stock: 1197MMSZ5261C-TP Datasheet

Current PartRFQ

MMSZ5261BT1G

onsemiIn Stock: 4199MMSZ5261BT1G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMSZ5261C-TP is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Matching Parameters:

• Zener voltage: 47 V nominal
• Maximum power dissipation: 500 mW
• Package type: SOD-123 surface mount
• Operating temperature range: -55°C to 150°C minimum
• Impedance (maximum): 105 Ohms
• Reverse leakage current: 100 nA @ 36 V
• Forward voltage: 900 mV @ 10 mA maximum

Tolerance Consideration: The MMSZ5261C-TP specifies ±2% tolerance on Zener voltage. Substitute parts with wider tolerance specifications (such as ±5%) remain functionally equivalent when the application circuit design accommodates the broader voltage range.

Parameter Comparison

Engineering Selection Recommendations

MMSZ5261BT1G (onsemi) is a direct electrical equivalent to the MMSZ5261C-TP with the following considerations:

Compliance Status:

• MMSZ5261BT1G carries RoHS3 compliance certification and Moisture Sensitivity Level (MSL) 1 rating, indicating unrestricted moisture exposure tolerance
• Both parts maintain REACH Unaffected status and EAR99 export classification
• Both parts are classified as Active products with confirmed inventory availability

Tolerance Specification:

• The substitute part specifies ±5% Zener voltage tolerance compared to ±2% for the main part
• This wider tolerance is acceptable in applications where circuit design margins accommodate the extended voltage range
• In precision voltage regulation applications requiring ±2% tolerance, the main part MMSZ5261C-TP is the specified choice

Packaging Consideration:

• The main part is supplied in Bulk packaging format
• The substitute part is supplied in Tape & Reel (TR) format, suitable for automated assembly processes
• Selection between these formats depends on production methodology and inventory management requirements

Frequently Asked Questions (FAQ)

Q: Can MMSZ5261BT1G replace MMSZ5261C-TP in all applications?

A: MMSZ5261BT1G is electrically equivalent for applications where ±5% Zener voltage tolerance is acceptable. Applications requiring ±2% tolerance specification must use MMSZ5261C-TP. Both parts share identical nominal voltage (47 V), power rating (500 mW), package type (SOD-123), and operating temperature range (-55°C to 150°C).

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

A: Bulk packaging supplies components in loose form, suitable for manual assembly or small-volume applications. Tape & Reel (TR) packaging supplies components on continuous tape for automated pick-and-place assembly equipment. Both formats contain the same component; packaging selection depends on assembly process requirements.

Q: Are there compliance differences between the main part and substitute?

A: MMSZ5261BT1G includes RoHS3 compliance certification and MSL 1 rating. Both parts maintain REACH Unaffected status and EAR99 classification. If RoHS3 compliance is a design requirement, MMSZ5261BT1G satisfies this requirement. The main part MMSZ5261C-TP does not specify RoHS status in the provided data.

Q: What does Moisture Sensitivity Level (MSL) 1 mean?

A: MSL 1 indicates unlimited moisture exposure tolerance. Components with this rating do not require special moisture control during storage, handling, or assembly. This classification applies to MMSZ5261BT1G.

Q: Can I use these parts interchangeably on the same PCB?

A: Yes, both parts use identical SOD-123 surface mount packaging and share the same pinout. PCB footprints designed for MMSZ5261C-TP accommodate MMSZ5261BT1G without modification. Tape & Reel packaging format does not affect PCB compatibility; it only affects component supply and assembly methodology.

Q: What is the significance of the ±2% versus ±5% tolerance difference?

A: Zener voltage tolerance defines the acceptable voltage range at which the diode operates. MMSZ5261C-TP guarantees 47 V ±2% (46.06 V to 47.94 V), while MMSZ5261BT1G guarantees 47 V ±5% (44.65 V to 49.35 V). Applications with tight voltage regulation requirements must use the ±2% part. Applications with broader voltage acceptance windows can use either part.