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onsemi MM5Z68VT1
- Part No.:
- MM5Z68VT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z68VT1.pdf
- Description:
- DIODE ZENER 68V 100MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:7,061
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Product details
Overview
MM5Z68VT1 from onsemi is a 68 V, 100 mW Zener diode in SOD−523 package, designed for precision voltage regulation and overvoltage protection in space-constrained circuits. It delivers nominal Zener voltage of 68 V at 1 mA test current, with ±5% tolerance (64–72 V), 240 Ω maximum impedance at IZT, and 0.05 µA leakage at 47.6 V reverse bias. It is used in voltage reference and ESD-protected power rail clamping for portable electronics.
For engineers reviewing the MM5Z68VT1 datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, low leakage at sub-breakdown bias, thermal stability (±0.012%/°C tempco), SOD−523 footprint compatibility, and Class 3 HBM ESD rating (>16 kV).
Technical Context
The MM5Z68VT1 operates as a two-terminal voltage reference device, conducting in reverse breakdown to clamp or regulate voltage across sensitive nodes. Its 100 mW power rating limits continuous dissipation, requiring careful thermal design in FR−5 PCB layouts at ambient temperatures up to +150°C junction temperature.
It exhibits a positive temperature coefficient of +1.2 mV/°C (0.012%/°C) near 68 V, enabling predictable drift compensation in stable reference designs. The SOD−523 package supports reflow soldering at 260°C and meets MSL 1 moisture sensitivity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 68 V nominal, 64–72 V min/max at IZT = 1 mA - defines precise clamping threshold for overvoltage protection |
| Power Dissipation (PD) | 100 mW at TA = 25°C - sets maximum continuous power handling on standard FR−5 board |
| Zener Impedance (ZZT) | 240 Ω max at IZT = 1 mA - determines regulation stiffness under dynamic load transients |
| Leakage Current (IR) | 0.05 µA max at VR = 47.6 V - ensures minimal standby current in pre-breakdown bias conditions |
| ESD Rating | Class 3 (>16 kV) per HBM - provides robust electrostatic immunity without external protection circuitry |
| Package | SOD−523 (Case 502), 1.20 × 0.80 × 0.70 mm - enables high-density placement on compact PCBs |
| Junction Temp Range | −65°C to +150°C - supports operation in extended industrial and automotive ambient environments |
Pinout & Package
SOD−523 surface-mount package with cathode marked by band; body dimensions: 1.20 mm × 0.80 mm × 0.70 mm; mounting position unrestricted; lead finish: 100% matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to regulated node or voltage rail; carries reverse current during Zener conduction |
| 2 (Anode) | Reference/ground terminal | Tied to system ground or lower-potential reference; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD−523 package | 0.7 mm height enables stacking and ultra-thin portable designs |
| High ESD immunity | Class 3 HBM (>16 kV) eliminates need for discrete ESD diodes in many front-end protection schemes |
| Precision voltage tolerance | ±5% (64–72 V) supports tight reference requirements without trimming |
| Stable temperature coefficient | +1.2 mV/°C enables predictable drift modeling in temperature-critical references |
| Reflow-compatible construction | Qualified for 260°C peak reflow and MSL 1 - simplifies automated assembly |
Applications
| Cellular Phone Power Management | USB-C Port Overvoltage Protection |
|---|---|
Use Scenario: Clamping 5 V USB power rail against transient surges during hot-plug events. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing fast-response voltage limiting at the port input stage. Use Value: Prevents damage to USB controller ICs by clamping excursions above 72 V with <0.05 µA leakage below 47.6 V. |
Use Scenario: Protecting internal PMIC inputs from accidental 12–20 V adapter misconnection. IC Role / Device Role / Timing Role: Standby-mode Zener clamp absorbing fault energy before upstream fuses activate. Use Value: Enables safe operation with legacy adapters via 68 V standoff and 240 Ω dynamic impedance for controlled energy dissipation. |
| High-Density PC Board Reference | Industrial Sensor Signal Conditioning |
Use Scenario: Providing stable 68 V bias for photomultiplier tube (PMT) anode chains. IC Role / Device Role / Timing Role: Precision DC voltage reference source with low tempco and minimal leakage. Use Value: Delivers ±0.012%/°C drift and 0.05 µA leakage, ensuring PMT gain stability across −40°C to +85°C operating range. |
Use Scenario: Regulating excitation voltage for 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant headroom for loop driver transistor. Use Value: Maintains 68 V regulation with 240 Ω ZZT to stabilize output despite varying loop load and supply ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C68 | 68 V, 300 mW, SOD-323 package (1.7 × 1.3 × 0.9 mm) | Higher power handling but 2.5× larger footprint; higher leakage (0.1 µA @ 54.4 V) | Select when >100 mW surge energy absorption is required and board area permits larger package. |
| MM3Z68VT1 | 68 V, 200 mW, SOD-323 package; same marking code (1F), different power rating | Higher PD allows longer-duration transients; not drop-in due to larger size and different thermal profile | Choose for enhanced reliability in intermittent overvoltage scenarios where layout revision is acceptable. |
Compared with BZX584-C68 and MM3Z68VT1, the MM5Z68VT1 offers the smallest PCB footprint and lowest leakage among 68 V Zeners, making it optimal for ultra-compact, low-quiescent-current designs where 100 mW dissipation suffices.
Availability
MM5Z68VT1 is available at Aetrix Electronics and suitable for cellular phone power management, USB-C port protection, and high-density PC board reference applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for MM5Z68VT1 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and intelligent edge applications.
The MM5Z series is part of onsemi's precision Zener voltage regulator product line, engineered specifically for miniaturized, high-reliability voltage reference and clamping in portable and space-constrained systems.
FAQ
What is the Zener voltage tolerance of MM5Z68VT1?
The MM5Z68VT1 has a nominal Zener voltage of 68 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 64 V and 72 V when tested at IZT = 1 mA and TA = 25°C. This tolerance is guaranteed per the Electrical Characteristics table on page 3 of the official datasheet and applies to all units shipped under this part number.
Does MM5Z68VT1 support lead-free reflow soldering?
Yes, MM5Z68VT1 is qualified for lead-free reflow soldering with a maximum peak temperature of 260°C and meets MSL 1 moisture sensitivity requirements. Its matte tin lead finish and thermosetting plastic package ensure reliable wetting and mechanical integrity during standard JEDEC J-STD-020-compliant reflow profiles.
What is the maximum reverse leakage current for MM5Z68VT1?
The MM5Z68VT1 specifies a maximum reverse leakage current (IR) of 0.05 µA at VR = 47.6 V and TA = 25°C. This low leakage ensures minimal power loss in standby mode and supports accurate voltage sensing in high-impedance reference circuits.
Can MM5Z68VT1 be used in place of MM5Z62VT1 in a circuit?
No - MM5Z68VT1 is not a direct replacement for MM5Z62VT1 due to its higher nominal Zener voltage (68 V vs. 62 V) and different impedance (240 Ω vs. 10 Ω at IZT). Substituting MM5Z68VT1 would raise the clamping threshold and reduce regulation stiffness, potentially compromising circuit protection or reference accuracy unless recalculated.
Is MM5Z68VT1 rated for automotive temperature ranges?
MM5Z68VT1 has a junction temperature range of −65°C to +150°C, exceeding AEC-Q200 Grade 3 (−40°C to +125°C) requirements. However, it is not officially AEC-Q200 qualified; for automotive applications, users must perform full qualification per their system-level reliability plan and consult onsemi's automotive product roadmap for certified alternatives.
MM5Z68VT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 68 V
- Tolerance:
- ±6%
- Power - Max:
- 100 mW
- Impedance (Max) (Zzt):
- 240 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 47.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
MM5Z68VT1 FAQ
1.How can I place an order for MM5Z68VT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z68VT1 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 MM5Z68VT1 reliable?
The price and inventory of MM5Z68VT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z68VT1 is usually 5 days.
3.What payment methods are accepted for MM5Z68VT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z68VT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z68VT1?
MM5Z68VT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z68VT1 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 MM5Z68VT1?
For technical support, including MM5Z68VT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z68VT1 requirements.
6.How does Aetrix verify that MM5Z68VT1 is sourced from the original manufacturer or authorized distributors?
All MM5Z68VT1 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 MM5Z68VT1 meets industry standards.
7.What is the process for return or replacement of MM5Z68VT1?
All MM5Z68VT1 units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z68VT1, 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 MM5Z68VT1 part is unused and in its original packaging.
Return procedure for MM5Z68VT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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