My Inquiry
My Account
onsemi MM3Z56VC
- Part No.:
- MM3Z56VC
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
MM3Z56VC.pdf
- Description:
- DIODE ZENER 56V 200MW SOD323FL
- Quantity:
- Payment:
- Shipping:
Inventory:8,805
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MM3Z56VC from onsemi is a 56 V ±5% tolerance Zener diode in SOD−323FL package, rated for 200 mW power dissipation, 188 Ω zener impedance at 2 mA test current, and 0.045 µA reverse leakage at 39.2 V. It provides precision voltage regulation in low-power reference and protection circuits.
For engineers reviewing the MM3Z56VC datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, dynamic impedance at low test current, thermal resistance (595 °C/W), reverse leakage performance, and SMD land-pad compatibility for high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference with stable breakdown behavior under reverse bias. Its 56 V nominal zener voltage is specified at IZT = 2 mA with ±5% tolerance, and it exhibits 188 Ω dynamic impedance (ZZT) measured under AC superposition at 10% of IZT.
The MM3Z56VC is optimized for low-current regulation and sensing roles where thermal constraints limit power handling. With a maximum junction temperature of 150 °C and storage range from −65 to +150 °C, it supports industrial ambient conditions when mounted on minimum PCB land pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 53.2 V (min) to 58.8 V (max) at IZT = 2 mA - defines regulation window under standard test condition |
| Zener Impedance (ZZT) | 188 Ω max at IZT = 2 mA - impacts output voltage stability under load transients |
| Power Dissipation (PD) | 200 mW - limits continuous DC current to ~3.6 mA at 56 V without heatsinking |
| Reverse Leakage (IR) | 0.045 µA max at VR = 39.2 V - ensures minimal quiescent current in standby reference circuits |
| Thermal Resistance (RJA) | 595 °C/W - requires careful PCB copper area design to avoid exceeding 150 °C junction temperature |
| Forward Voltage (VF) | 1.0 V max at IF = 10 mA - enables use as low-drop rectifier or clamp in forward conduction |
Pinout & Package
SOD−323FL surface-mount package (Case 477AB), ultra-thin profile, matte tin finish, Pb-free and RoHS compliant. Dimensions per onsemi document 98AON79864E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Forward conduction terminal / cathode-referenced input | Connected to lower-potential node in reverse-bias regulation; used for forward clamping when anode is driven positive relative to cathode |
| 2 (Cathode) | Zener breakdown terminal / reference output | Connected to regulated voltage node; supplies stable 56 V reference when reverse biased above VZ with current limiting |
Key Features
| Feature | Design Value |
|---|---|
| ±5% zener voltage tolerance | Enables predictable regulation without post-assembly trimming in cost-sensitive consumer and industrial references |
| 200 mW power rating in SOD−323FL | Supports compact layout while delivering sufficient headroom for transient overvoltage suppression up to 3.6 mA |
| Low 0.045 µA reverse leakage at 39.2 V | Minimizes error in high-impedance voltage divider networks and battery-powered sensor references |
| 595 °C/W junction-to-ambient thermal resistance | Requires ≥10 mm² of 1-oz copper pour for safe operation at full power in still-air environments |
Applications
| Industrial Sensor Reference | USB-C ESD Clamp |
|---|---|
Use Scenario: Precision analog front-end for 4–20 mA loop-powered temperature transmitter. IC Role / Device Role / Timing Role: Zener diode providing stable 56 V rail for op-amp biasing and ADC reference scaling. Use Value: Tight ±5% VZ tolerance and sub-µA leakage ensure <0.1% full-scale error drift across −40 to +85 °C ambient. | Use Scenario: Secondary-level transient protection on USB-C CC line before Type-C controller IC. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp absorbing fast ESD pulses while holding line below 39.2 V during normal operation. Use Value: 0.045 µA leakage prevents false detection on CC logic; SOD−323FL footprint fits tight 0.5 mm pitch routing. |
| Programmable Logic Supply Clamp | Automotive Body Control Module Reference |
Use Scenario: Overvoltage clamp for FPGA configuration I/O bank powered from 3.3 V LDO with 56 V backup rail. IC Role / Device Role / Timing Role: Reverse-biased Zener shunting surge energy to ground when supply exceeds 56 V during load dump events. Use Value: 188 Ω ZZT ensures clamped voltage stays within 5% of nominal during 100 ns transients, protecting I/O cells. | Use Scenario: Stable reference for LIN bus voltage monitor in 12 V automotive body control unit. IC Role / Device Role / Timing Role: Zener diode establishing known threshold for comparator-based undervoltage/overvoltage detection. Use Value: 150 °C max junction temperature and −65 to +150 °C storage range meet AEC-Q200 Grade 2 requirements for under-hood placement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B56 | Same 56 V ±5%, but in SOD-323 package (not FL variant); RJA = 625 °C/W; higher IR = 0.1 µA at 42 V | Less thermally efficient; slightly higher leakage affects ultra-low-power references | Select when legacy BOM uses BZX384 series and board land pattern allows minor thermal derating |
| MMSZ5256ET1G | 56 V ±5%, SOD-123 package; PD = 500 mW; RJA = 350 °C/W; IR = 0.1 µA at 42 V | Larger footprint; higher power handling but less suitable for space-constrained designs | Prefer for higher-current regulation (>5 mA) where PCB area permits SOD-123 |
Compared with BZX384-B56 and MMSZ5256ET1G, the MM3Z56VC offers the lowest thermal resistance among SOD−323FL devices and the lowest reverse leakage in its voltage class, making it optimal for miniaturized, low-quiescent-current industrial references where board space and self-heating are critical constraints.
Availability
MM3Z56VC is available at Aetrix Electronics and suitable for industrial sensor reference, USB-C ESD clamp, and programmable logic supply clamp applications requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for MM3Z56VC 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM3ZxxVC series is part of onsemi's precision Zener diode portfolio designed specifically for space-constrained, low-power voltage reference and overvoltage protection in industrial and consumer electronics.
FAQ
What is the zener voltage tolerance of MM3Z56VC?
The MM3Z56VC has a zener voltage tolerance of ±5%, meaning its actual breakdown voltage falls between 53.2 V and 58.8 V when tested at IZT = 2 mA. This tolerance is confirmed in the Electrical Characteristics table of the onsemi datasheet (Rev. 3, August 2023) and applies across the full operating temperature range. The MM3Z56VC is marked "Z=" on the cathode end for identification.
What is the maximum power dissipation for MM3Z56VC?
The MM3Z56VC is rated for 200 mW maximum power dissipation at 25 °C ambient, as specified in the Absolute Maximum Ratings table. Derating is required above 25 °C at 0.337 mW/°C (based on RJA = 595 °C/W). This limit defines the upper bound of continuous DC current-approximately 3.6 mA at 56 V-before thermal runaway risk increases. The MM3Z56VC must be mounted on PCB land pads meeting minimum copper area guidelines to sustain this rating.
How does the reverse leakage current of MM3Z56VC compare to similar 56 V Zeners?
The MM3Z56VC specifies a maximum reverse leakage current of 0.045 µA at VR = 39.2 V, which is lower than alternatives like BZX384-B56 (0.1 µA at 42 V) and MMSZ5256ET1G (0.1 µA at 42 V). This ultra-low leakage directly improves accuracy in high-impedance reference dividers and extends battery life in always-on monitoring circuits. The MM3Z56VC achieves this performance through optimized silicon processing and tight process control within the MM3ZxxVC family.
Is MM3Z56VC suitable for automotive applications?
The MM3Z56VC meets key automotive-environment requirements including a storage temperature range of −65 to +150 °C and maximum junction temperature of 150 °C. While not AEC-Q200 qualified as a standalone component, its parametric stability and robust construction make it suitable for non-safety-critical automotive subsystems such as body control module voltage monitors or infotainment power supervision-provided system-level qualification is completed. The MM3Z56VC is RoHS compliant and halogen-free per onsemi specifications.
What package type does MM3Z56VC use and what are its key mechanical features?
The MM3Z56VC uses the SOD−323FL package (Case 477AB), a leadless, ultra-thin surface-mount outline with matte tin (Sn) finish. Key features include 0.65 mm nominal height, 1.7 mm × 1.25 mm body dimensions, and compatibility with standard reflow profiles. Its FL variant offers improved thermal performance over standard SOD-323 due to enhanced pad exposure, contributing to the 595 °C/W RJA rating. The MM3Z56VC marking "Z=" appears adjacent to the cathode band.
MM3Z56VC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 188 Ohms
- Current - Reverse Leakage @ Vr:
- 45 nA @ 39.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 mA
- Operating Temperature:
- 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323FL
MM3Z56VC FAQ
1.How can I place an order for MM3Z56VC through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z56VC 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 MM3Z56VC reliable?
The price and inventory of MM3Z56VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z56VC is usually 5 days.
3.What payment methods are accepted for MM3Z56VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z56VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z56VC?
MM3Z56VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z56VC 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 MM3Z56VC?
For technical support, including MM3Z56VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z56VC requirements.
6.How does Aetrix verify that MM3Z56VC is sourced from the original manufacturer or authorized distributors?
All MM3Z56VC 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 MM3Z56VC meets industry standards.
7.What is the process for return or replacement of MM3Z56VC?
All MM3Z56VC units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z56VC, 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 MM3Z56VC part is unused and in its original packaging.
Return procedure for MM3Z56VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM3Z56VC Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
