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onsemi MM5Z24VT1
- Part No.:
- MM5Z24VT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
MM5Z24VT1.pdf
- Description:
- DIODE ZENER 100MW 24V SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:9,031
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Product details
Overview
MM5Z24VT1 from onsemi is a 24.2 V nominal Zener voltage regulator diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with ±5% tolerance (22.8–25.6 V), 70 Ω max Zener impedance at 5 mA test current, and 16.8 mV/°C temperature coefficient - used for precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the MM5Z24VT1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, ESD robustness (Class 3, >16 kV HBM), SOD-523 mechanical dimensions (1.20 × 0.80 × 0.60 mm), and direct alternative part comparisons for compact power rail stabilization.
Technical Context
This device operates as a two-terminal reverse-biased voltage reference, maintaining stable regulation across 5 mA test current (IZT) and low-current knee region (IZK = 1 mA). Its 70 Ω dynamic impedance at IZT and 120 Ω at IZK ensures predictable clamping under varying load conditions.
The MM5Z24VT1 exhibits a positive temperature coefficient of +16.8 mV/°C and maximum 0.05 μA leakage at VR = 18.4 V, enabling predictable drift compensation in bias networks and feedback paths where thermal stability is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.8 V min / 24.2 V nom / 25.6 V max @ IZT = 5 mA - defines regulated output range for voltage clamp or reference circuits |
| Power Dissipation (PD) | 500 mW @ TA = 25 °C, derated 4.0 mW/°C above - sets maximum continuous thermal load on FR-4 PCB with 1 cm² pad |
| Zener Impedance (ZZT) | 70 Ω max @ IZT = 5 mA - determines AC ripple rejection and regulation stiffness under dynamic load changes |
| Leakage Current (IR) | 0.05 μA max @ VR = 18.4 V - ensures minimal parasitic current draw in high-impedance bias or sensing nodes |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - supports robust handling and integration into handheld consumer devices without added protection |
| Capacitance (C) | 80 pF max @ VR = 0 V, f = 1 MHz - limits high-frequency noise coupling in RF-adjacent or fast-switching power domains |
| Package | SOD-523 (1.20 × 0.80 × 0.60 mm) - enables placement on ultra-dense PCBs including mobile phone mainboards and wearables |
Pinout & Package
SOD-523 surface-mount package with molded thermosetting plastic case (UL 94 V-0), 100% matte tin lead finish, MSL 1 rating, and qualified reflow up to 260 °C. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables use in moderate-power clamping applications without external heat sinking on standard FR-4 |
| ±5% Zener Tolerance | Supports cost-sensitive designs requiring predictable but non-precision voltage thresholds |
| 16.8 mV/°C Tempco | Allows predictable drift modeling in temperature-compensated reference chains or bias networks |
| 80 pF Junction Capacitance | Minimizes signal distortion in high-speed data line protection or clock buffer decoupling |
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements for consumer and industrial end products |
Applications
| Smartphone Power Rail Clamp | USB-C Port Overvoltage Protection |
|---|---|
|
Use Scenario: Clamping transient surges on 3.3 V or 5 V system rails during hot-plug events in LTE/5G handsets. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing excess energy above 24.2 V threshold to protect PMIC inputs. Use Value: Prevents latch-up or damage to downstream LDOs and SoC power domains using only 1.20 × 0.80 mm footprint. |
Use Scenario: Safeguarding USB-C CC logic lines and VCONN supply against accidental 24 V misconnection in docking stations. IC Role / Device Role / Timing Role: Standby-mode voltage limiter that conducts only during fault, minimizing standby current drain. Use Value: Achieves <0.05 μA leakage at 18.4 V while clamping transients within 10 ns, preserving signal integrity. |
| Wearable Sensor Bias Reference | Industrial PLC Input Protection |
|
Use Scenario: Providing stable bias voltage for MEMS accelerometer analog front-end in hearable devices. IC Role / Device Role / Timing Role: Low-drift DC reference source with +16.8 mV/°C tempco matched to sensor offset drift. Use Value: Reduces calibration complexity by aligning reference drift with sensor thermal behavior over −40 to +85 °C. |
Use Scenario: Protecting 24 V digital input channels in DIN-rail mounted controllers from field-wiring transients. IC Role / Device Role / Timing Role: Primary clamping element placed before optocoupler input, limiting voltage to safe isolation barrier levels. Use Value: Withstands repeated 1 kV/μs transients per IEC 61000-4-4 due to low dynamic impedance and robust SOD-523 package bond wire construction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C24 | Same 24 V nominal Zener, but SOD-323 package (1.7 × 1.3 mm); 350 mW rating; 100 Ω ZZT @ 5 mA | Larger footprint and lower power limit restrict use in highest-density layouts | Select when legacy SOD-323 board space is available and lower cost is prioritized over miniaturization |
| MM3Z24VT1G | SOD-323 package, same 24.2 V nominal, but 300 mW rating and 100 Ω ZZT @ 5 mA; identical marking and tolerance | Lower power handling requires tighter thermal design margin in sustained clamp scenarios | Choose when existing SOD-323 footprint reuse is required and peak pulse energy remains below 300 mW limits |
Compared with BZX584C24 and MM3Z24VT1G, the MM5Z24VT1 offers the smallest footprint (SOD-523), highest power rating (500 mW), and lowest dynamic impedance (70 Ω), making it optimal for next-generation portable and wearable designs demanding maximal density and thermal headroom.
Availability
MM5Z24VT1 is available at Aetrix Electronics and suitable for smartphone power rail clamp, USB-C port overvoltage protection, and wearable sensor bias reference applications requiring stable component supply and long-term lifecycle support.
Supply support for MM5Z24VT1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MM5ZxxxT1G series was designed specifically for ultra-compact voltage regulation in space-constrained portable electronics, emphasizing low-profile packaging, high ESD robustness, and tight parametric consistency across production lots.
FAQ
What is the Zener voltage tolerance of MM5Z24VT1?
The MM5Z24VT1 has a standard tolerance of ±5%, with a specified Zener voltage range of 22.8 V minimum to 25.6 V maximum at 5 mA test current (IZT) and 25 °C ambient temperature. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 19, April 2025), and applies directly to the MM5Z24VT1G/T5G ordering variant.
Does MM5Z24VT1 meet automotive qualification standards?
The MM5Z24VT1 itself is not AEC-Q101 qualified; however, its automotive-grade counterpart SZMM5Z24VT1G is explicitly listed as AEC-Q101 qualified and PPAP capable in the onsemi datasheet. The MM5Z24VT1 is intended for commercial and industrial applications, with identical electrical specs but different process control and traceability documentation.
What is the maximum operating temperature for MM5Z24VT1?
The MM5Z24VT1 has a junction and storage temperature range of −65 °C to +150 °C, as stated in the Maximum Ratings table. Its thermal resistance (RJA) is 250 °C/W on an FR-4 board with a 1 cm² copper pad, meaning power derating begins above 25 °C at 4.0 mW/°C - full 500 mW operation is only guaranteed at or below 25 °C ambient.
How is polarity marked on the MM5Z24VT1 SOD-523 package?
The MM5Z24VT1 uses Style 1 marking per the onsemi mechanical drawing: Pin 1 (cathode) is identified by a polarity band (dark stripe) at one end of the SOD-523 body. The opposite end (unbanded) is the anode. The device marking "11" appears adjacent to the cathode band, confirming the 24 V variant within the MM5ZxxxT1G family.
Can MM5Z24VT1 be used in place of MM5Z24V?
Yes - MM5Z24VT1 is the current standardized ordering designation for this device; "MM5Z24V" is an obsolete or informal shorthand. The official onsemi ordering part number is MM5Z24VT1G (3,000/reel) or MM5Z24VT5G (8,000/reel), both referencing the same SOD-523, 24.2 V Zener diode with identical electrical and mechanical specifications.
MM5Z24VT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MM5Z24VT1 FAQ
1.How can I place an order for MM5Z24VT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z24VT1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MM5Z24VT1 reliable?
The price and inventory of MM5Z24VT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z24VT1 is usually 5 days.
3.What payment methods are accepted for MM5Z24VT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z24VT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z24VT1?
MM5Z24VT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z24VT1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MM5Z24VT1?
For technical support, including MM5Z24VT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z24VT1 requirements.
6.How does Aetrix verify that MM5Z24VT1 is sourced from the original manufacturer or authorized distributors?
All MM5Z24VT1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MM5Z24VT1 meets industry standards.
7.What is the process for return or replacement of MM5Z24VT1?
All MM5Z24VT1 units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z24VT1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MM5Z24VT1 part is unused and in its original packaging.
Return procedure for MM5Z24VT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM5Z24VT1 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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