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ZMM47
Diotec Semiconductor
ZENER SOD80 47V 0.5W 5%
6259 Pcs New Original In Stock
Zener Diode 47 V 500 mW ±5% Surface Mount SOD-80C
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5.0 / 5.0
- (247 Ratings)
ZMM47
Product Overview
12944837
DiGi Electronics Part Number
ZMM47-DGManufacturer
Diotec Semiconductor
ZMM47
Description
ZENER SOD80 47V 0.5W 5%Inventory
6259 Pcs New Original In Stock
Zener Diode 47 V 500 mW ±5% Surface Mount SOD-80C
Quantity
Minimum 1
Minimum 1
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ZMM47 Technical Specifications
Category
Diodes, Zener, Single Zener Diodes
Packaging
-
Series
-
Product Status
Active
Voltage - Zener (Nom) (Vz)
47 V
Tolerance
±5%
Power - Max
500 mW
Impedance (Max) (Zzt)
110 Ohms
Current - Reverse Leakage @ Vr
100 nA @ 36 V
Operating Temperature
-50°C ~ 175°C (TJ)
Mounting Type
Surface Mount
Package / Case
DO-213AC, MINI-MELF, SOD-80
Supplier Device Package
SOD-80C
Datasheet & Documents
Datasheets
Download ZMM47 Product Specification (PDF)
HTML Datasheet
ZMM47-DG
Environmental & Export Classification
RoHS Status
Not applicable
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
Vendor Undefined
HTSUS
8541.10.0000
Additional Information
Other Names
2796-ZMM47TR
Standard Package
2,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
포장 상태가 깔끔하고 친환경적이어서 구매 후의 만족감이 큽니다.
грудня 02, 2025
DiGi Electronics, c’est l’exemple parfait d’une entreprise responsable à prix doux.
грудня 02, 2025
DiGi Electronics' support staff are knowledgeable and always ready to assist.
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Frequently Asked Questions (FAQ)
Can the ZMM47 be used as a direct replacement for the BZD27-A47 in a high-temperature automotive voltage regulation circuit, and what design considerations should I account for?
The ZMM47 can serve as a functional alternative to the BZD27-A47 in high-temperature environments due to its identical 47 V nominal Zener voltage and comparable 500 mW power rating, but key differences require attention. The BZD27-A47 typically offers tighter long-term stability and better surge handling, so ensure your design includes current limiting resistors and thermal derating. Since the ZMM47 has a max Zzt of 110 Ω, verify regulation accuracy under dynamic loads. Use thermal vias in the PCB layout to manage junction temperatures near the 175°C max TJ, especially in engine control modules where thermal cycling is frequent.
How does the ZMM47 perform in precision voltage reference applications compared to the MMBZ5252B, and what risks should I mitigate during integration?
While the ZMM47 and MMBZ5252B both regulate at 47 V, the MMBZ5252B generally offers lower dynamic impedance (~45 Ω) and better temperature stability, making it more suitable for precision references. Using the ZMM47 in such applications risks higher output drift and noise due to its higher Zzt (110 Ω max). To mitigate, use the ZMM47 in non-critical regulation roles or buffer its output with a low-input-bias op-amp. Avoid using it in feedback loops requiring high accuracy; instead, consider it for overvoltage protection or coarse clamping where ±5% tolerance is acceptable.
What are the PCB layout best practices when integrating the ZMM47 in a surface-mount power supply design to prevent thermal runaway?
To prevent thermal runaway with the ZMM47 in a power supply, optimize the SOD-80C package’s thermal dissipation by adding thermal relief pads connected to ground or power planes via vias. Keep trace lengths short to high-current nodes and avoid placing the ZMM47 near heat-generating components like switching regulators. Since the ZMM47 has no MSL rating, store and assemble it promptly to avoid moisture-related cracking during reflow. Derate power usage above 75°C ambient—operate below 300 mW above this threshold to stay within the -50°C to 175°C operating range safely.
Is the ZMM47 suitable for use in reverse-biased ESD protection circuits, and how does its leakage current affect sensitive analog stages?
The ZMM47 can be used in ESD protection networks due to its 47 V clamping capability, but its 100 nA leakage at 36 V may affect ultra-low-power or high-impedance analog circuits. If placed on signal lines with input bias currents below 1 µA (e.g., precision instrumentation amplifiers), this leakage can introduce offset errors. Use the ZMM47 only in higher-power segments or buffer sensitive nodes. For better performance, pair it with a low-capacitance TVS diode or consider lower-leakage Zeners like the SMAZ47A for mixed-signal boards.
What are the long-term reliability risks of using the ZMM47 in industrial control systems with frequent voltage transients, and how can I improve its robustness?
In industrial environments with repetitive transients, the ZMM47 may experience gradual parameter drift due to its 500 mW power limit and 110 Ω impedance. Repeated clamping of surge events above 10 mA average current can accelerate wear-out. To enhance reliability, combine the ZMM47 with upstream transient suppression (e.g., a PTC fuse and TVS diode like SMAJ58A). Monitor operating current to stay below 8 mA continuous, include a margin for load variations, and avoid sustained operation above 125°C TJ to preserve longevity in motor drives or PLC I/O modules.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
ZMM47 CAD Models
Diotec Semiconductor ZMM47 PCB symbols & footprints
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