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Nexperia USA Inc. MM3Z20VT1GX
- Part No.:
- MM3Z20VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z20VT1GX.pdf
- Description:
- DIODE ZENER 20V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,918
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Product details
Overview
MM3Z20VT1GX from Nexperia is a 20 V ±5 % tolerance Zener diode in SOD323 (SC-76) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, with 15 Ω typical differential resistance at IZ = 5 mA and 14.4–18.0 V working voltage range. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the MM3Z20VT1GX datasheet, MM3Z20VT1GX pinout, MM3Z20VT1GX application, or MM3Z20VT1GX equivalent, this page delivers verified electrical characteristics, thermal behavior, cathode/anode terminal mapping, and real-world use cases for stable 20 V reference design in space-constrained PCBs.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 20 V reference across load variations, with temperature coefficient of +14.4 mV/K at IZ = 5 mA and junction-to-ambient thermal resistance of 415 K/W on FR4 PCB. Its low 15 Ω differential resistance ensures minimal voltage drift under current changes from 1 to 10 mA.
The device supports surge immunity via 40 W non-repetitive peak reverse power handling (tp = 100 µs, square wave), while forward voltage remains ≤1.1 V at 100 mA - enabling bidirectional clamping and dual-role use in protection + biasing topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18.86–21.08 V at IZ = 5 mA; defines stable regulation point for 20 V reference circuits |
| Tolerance | ±5 %; enables predictable voltage margin in feedback loops without post-calibration |
| Differential Resistance (rdiff) | 15 Ω max at IZ = 5 mA; limits output voltage variation to <0.15 V per 10 mA load change |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB; sets maximum continuous DC bias current to ~15 mA |
| Non-repetitive Peak Reverse Power | 40 W (tp = 100 µs); sustains transient overvoltage events without degradation |
| Reverse Current (IR) | ≤100 µA at VR = 15 V; ensures low leakage in high-impedance sensing nodes |
| Junction Temperature (Tj) | −55 to +150 °C; supports operation in industrial ambient environments |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-pin, 1.35 mm × 0.85 mm body, 0.45 mm pin pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 15 Ω max at 5 mA enables tight voltage regulation in feedback networks |
| Wide voltage range coverage | 20 V nominal fits mid-range analog references where 15–24 V rails are common |
| Small-footprint SOD323 package | 1.35 × 0.85 mm saves board area in dense power management IC layouts |
| Stable temperature coefficient | +14.4 mV/K allows predictable drift compensation in temperature-critical references |
| High surge robustness | 40 W peak reverse power rating protects against ESD and line transients |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulators or switching converter error amplifiers. IC Role / Device Role / Timing Role: Zener diode provides fixed 20 V reference to comparator input for output voltage sensing. Use Value: Maintains ±0.5 % output accuracy over 0–70 °C due to low rdiff and known TC. |
Use Scenario: Protecting ADC inputs from accidental 24 V rail exposure in industrial I/O modules. IC Role / Device Role / Timing Role: Cathode tied to protected node, anode grounded - clamps voltage to 20 V during overvoltage events. Use Value: Limits transient energy to <1 mJ using 40 W/100 µs surge rating, preventing ADC latch-up. |
| Signal Level Shifting | Bias Voltage Generator |
Use Scenario: Translating 3.3 V logic signals to 20 V interface levels for legacy sensor drivers. IC Role / Device Role / Timing Role: Used as series-connected Zener drop in open-drain pull-up configuration. Use Value: Delivers precise 20 V level with <10 mV ripple under 1 mA load, eliminating need for LDO. |
Use Scenario: Generating stable gate bias for high-side MOSFETs in half-bridge motor drivers. IC Role / Device Role / Timing Role: Supplies regulated 20 V to gate driver bootstrap capacitor charging path. Use Value: Ensures consistent turn-on threshold despite supply ripple, reducing shoot-through risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B20,115 | Same 20 V ±5 %, but SOD323 package with 200 mW Ptot and 20 Ω rdiff | Lower power handling reduces margin in sustained 10 mA bias applications | Select when cost sensitivity outweighs thermal headroom requirements |
| MMSZ5249B-TP | 20 V ±5 % in SOD123, 500 mW Ptot, 22 Ω rdiff, higher thermal resistance (500 K/W) | Larger footprint accommodates higher continuous power but sacrifices board density | Prefer for designs needing >20 mA DC bias where SOD323 thermal limits are exceeded |
Compared with BZX384-B20 and MMSZ5249B, MM3Z20VT1GX offers optimal balance of low rdiff, compact size, and 300 mW thermal capability - making it ideal for space-constrained 20 V reference nodes requiring stability under moderate load variation.
Availability
MM3Z20VT1GX is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface circuits, and embedded system voltage references requiring stable component supply and full traceability.
Supply support for MM3Z20VT1GX 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The MM3Z series targets general-purpose voltage regulation in space-constrained applications, emphasizing tight tolerance, low dynamic impedance, and robust surge performance in miniature SMD packages.
FAQ
What is the maximum continuous reverse current for stable 20 V regulation?
At 25 °C ambient on FR4 PCB, the maximum continuous reverse current is ~15 mA - derived from 300 mW total power dissipation divided by 20 V Zener voltage. Exceeding this causes junction temperature rise beyond 150 °C, risking parametric shift or failure.
How does the 15 Ω differential resistance affect regulation accuracy under load change?
A 15 Ω rdiff means a 1 mA change in Zener current produces only 15 mV output variation. For example, shifting from 5 mA to 8 mA increases VZ by 45 mV - well within ±5 % tolerance band, ensuring stable reference in variable-load feedback paths.
Can MM3Z20VT1GX be used in bidirectional ESD protection?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation. Forward conduction (anode positive) exhibits ~1.1 V VF at 100 mA but lacks symmetric clamping or specified ESD robustness; dedicated TVS diodes like PESD5V0X1BL are required for bidirectional protection.
Is the SOD323 package compatible with standard reflow profiles for lead-free soldering?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The SOD323 footprint (Fig. 12) uses 0.6 mm × 0.5 mm solder lands with 0.4 mm stencil aperture, supporting peak temperatures up to 260 °C for ≤30 seconds without delamination or marking loss.
MM3Z20VT1GX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- MM3Z
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MM3Z20VT1GX FAQ
1.How can I place an order for MM3Z20VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z20VT1GX 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 MM3Z20VT1GX reliable?
The price and inventory of MM3Z20VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z20VT1GX is usually 5 days.
3.What payment methods are accepted for MM3Z20VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z20VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z20VT1GX?
MM3Z20VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z20VT1GX 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 MM3Z20VT1GX?
For technical support, including MM3Z20VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z20VT1GX requirements.
6.How does Aetrix verify that MM3Z20VT1GX is sourced from the original manufacturer or authorized distributors?
All MM3Z20VT1GX 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 MM3Z20VT1GX meets industry standards.
7.What is the process for return or replacement of MM3Z20VT1GX?
All MM3Z20VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z20VT1GX, 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 MM3Z20VT1GX part is unused and in its original packaging.
Return procedure for MM3Z20VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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