Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
ZMM12
Diotec Semiconductor
DIODE ZENER 12V 500MW SOD80C
20123 Pcs New Original In Stock
Zener Diode 12 V 500 mW ±5% Surface Mount SOD-80C
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (204 Ratings)
ZMM12
Product Overview
12944694
DiGi Electronics Part Number
ZMM12-DGManufacturer
Diotec Semiconductor
ZMM12
Description
DIODE ZENER 12V 500MW SOD80CInventory
20123 Pcs New Original In Stock
Zener Diode 12 V 500 mW ±5% Surface Mount SOD-80C
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
ZMM12 Technical Specifications
Category
Diodes, Zener, Single Zener Diodes
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Voltage - Zener (Nom) (Vz)
12 V
Tolerance
±5%
Power - Max
500 mW
Impedance (Max) (Zzt)
20 Ohms
Current - Reverse Leakage @ Vr
100 nA @ 9 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 ZMM12 Product Specification (PDF)
HTML Datasheet
ZMM12-DG
Environmental & Export Classification
RoHS Status
Not applicable
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
Vendor Undefined
ECCN
EAR99
HTSUS
8541.10.0050
Additional Information
Other Names
2796-ZMM12TR-DG
2796-ZMM12TR
4878-ZMM12DKR
4878-ZMM12TR
4878-ZMM12CT
Standard Package
2,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Leur transparence tarifaire me donne confiance en leur entreprise.
Dec 02, 2025
スタッフの対応が親切で、困ったときもすぐに解決策を提示してくれる点が気に入っています。
Dec 02, 2025
Ich habe bisher kaum eine bessere Lieferungserfahrung gemacht, sowohl bei Pünktlichkeit als auch bei Produktqualität.
Dec 02, 2025
Order arrived in record time, with packaging that exceeded my safety expectations.
Dec 02, 2025
The longevity of their products makes my investment worthwhile.
Dec 02, 2025
The customer service team was incredibly friendly and responsive, making the shopping experience smooth and enjoyable.
Dec 02, 2025
Excellent shipping speed; I received my items ahead of schedule. Customer support was also top-notch.
Dec 02, 2025
The order processing at DiGi Electronics is remarkably efficient, allowing us to receive our supplies promptly and without delays.
Dec 02, 2025
Their logistics efficiency ensures timely shipment, making shopping hassle-free.
Dec 02, 2025
I highly recommend DiGi Electronics for gamers seeking reliable gear without overspending.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
When designing a voltage reference circuit with tight thermal stability requirements, should I use the ZMM12 or consider a precision shunt like the TL431 instead?
The ZMM12 is suitable for basic voltage regulation or clamping tasks where moderate temperature stability is acceptable, but for precision voltage references requiring low temperature drift and high accuracy, the TL431 offers significantly better performance. The ZMM12 has a zener impedance (Zzt) of up to 20 Ohms and ±5% initial tolerance, leading to potential errors under varying load or temperature. In contrast, the TL431 maintains tighter regulation with lower dynamic impedance and better thermal stability. Use the ZMM12 only when cost, simplicity, or physical size are priorities over precision. For voltage reference applications demanding accuracy across temperature, opt for bandgap-based references like the TL431 over the ZMM12.
Can the ZMM12 reliably protect a sensitive 12V microcontroller input in an automotive environment with frequent voltage transients?
While the ZMM12 is rated for 12V nominal zener voltage and operates from -50°C to +175°C, making it thermally robust, its 500mW power rating limits surge current handling. In automotive applications with load dump or transient spikes exceeding 20V, the ZMM12 alone may overheat without additional current limiting. To safely use the ZMM12 for clamping a microcontroller input, always pair it with a series resistor sized to limit peak power dissipation below 500mW during faults. For enhanced transient protection, consider adding a TVS diode such as the SMAJ12A in parallel to handle high-energy events, using the ZMM12 only for fine-level regulation.
Is the SOD-80C package of the ZMM12 suitable for high-vibration industrial applications compared to through-hole Zeners like the 1N4742A?
The SOD-80C surface-mount package of the ZMM12 offers space-saving benefits but presents mechanical reliability concerns in high-vibration environments compared to through-hole devices like the 1N4742A. While the ZMM12’s MINI-MELF construction provides better mechanical strength than standard rectangular SMD packages, it still depends on solder joint integrity. For harsh environments, ensure robust PCB pad design, use solder fillets, and consider conformal coating. If vibration resistance is critical and board space allows, the through-hole 1N4742A may offer superior long-term reliability. Evaluate field conditions carefully before selecting the SOD-80C-based ZMM12 over more mechanically stable alternatives.
How do I determine the correct bias current for stable regulation with the ZMM12, and what risks exist if it's under-driven?
For stable regulation, the ZMM12 requires sufficient reverse current to operate within its specified zener region—typically between 5 mA and 20 mA. Below 1 mA, the zener voltage may drop significantly due to the knee in the IV curve, leading to inaccurate clamping. To avoid under-driving, calculate the series resistor based on minimum supply voltage and maximum load current, ensuring at least 2–3 mA flows through the ZMM12 even under worst-case conditions. Avoid using the ZMM12 in high-impedance circuits (e.g., high-value pull-ups) without verifying current margins. Failure to maintain adequate bias current results in poor regulation and unpredictable behavior, especially in low-power monitoring circuits.
Can the ZMM12 replace the BZX85C12 in a legacy through-hole design, and what are the key design-in trade-offs?
The ZMM12 cannot directly replace the BZX85C12 without redesigning the PCB, as the ZMM12 uses a surface-mount SOD-80C (MINI-MELF) package versus the BZX85C12’s axial leaded DO-41 package. Beyond footprint differences, the ZMM12 has a lower max power rating (500 mW vs. 1.3W for BZX85C12), limiting its use in higher-power applications. While both have similar electrical specs (12V, ±5%), the ZMM12’s lower thermal mass and SMD construction restrict heat dissipation. To replace the BZX85C12 with the ZMM12, verify power dissipation under max ambient temperature and consider derating. Use the ZMM12 only if board space, cost, and automation favor SMD, accepting reduced power handling and thermal resilience.
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.
ZMM12 CAD Models
Diotec Semiconductor ZMM12 PCB symbols & footprints
productDetail
