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Nexperia USA Inc. MM3Z68VT1GX
- Part No.:
- MM3Z68VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z68VT1GX.pdf
- Description:
- DIODE ZENER 68V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,599
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Product details
Overview
MM3Z68VT1GX from Nexperia is a 68 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 47.6 Ω differential resistance at IZ = 2 mA and temperature coefficient of +0.05 mV/K - used for precision voltage reference and overvoltage clamping in low-power analog front-ends.
For engineers reviewing the MM3Z68VT1GX datasheet, MM3Z68VT1GX pinout, MM3Z68VT1GX application, or MM3Z68VT1GX equivalent, this page delivers verified electrical characteristics, thermal behavior, cathode/anode terminal mapping, and direct-fit alternatives for voltage regulation and protection circuits operating up to 150 °C junction temperature.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal working voltage of 68 V (min 64 V, max 72 V) at IZ = 2 mA, exhibiting low dynamic impedance (47.6 Ω) and positive temperature coefficient (+0.05 mV/K), enabling stable reference generation across industrial ambient ranges. Its 100 µs surge rating supports transient suppression in DC bias networks.
The device features a 2-pin SOD323 surface-mount package with cathode marked by a bar, optimized for FR4 PCBs with Rth(j-a) = 415 K/W and Rth(j-sp) = 110 K/W, supporting continuous operation at Tamb = −55 °C to +150 °C and Tj ≤ 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 64 V to 72 V at IZ = 2 mA - defines precise clamping threshold for 68 V nominal rail protection |
| Differential Resistance (rdiff) | 47.6 Ω at IZ = 2 mA - ensures minimal voltage shift under load variation in reference circuits |
| Temperature Coefficient (SZ) | +0.05 mV/K - provides near-zero drift over temperature in precision biasing applications |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling capability |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs - enables robust ESD/inductive spike absorption without failure |
| Reverse Current (IR) | ≤ 475 µA at VR = 52.5 V - guarantees low leakage below breakdown, critical for high-impedance sensing nodes |
| Forward Voltage (VF) | 1.1 V at IF = 100 mA - confirms low conduction loss when used in series forward-path configurations |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 2-terminal, ultra-compact footprint (2.7 × 1.35 mm), cathode identified by marking bar on body.
| 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 voltage reference operation |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 47.6 Ω at 2 mA - maintains tight voltage regulation under varying load current |
| Wide voltage range coverage | 68 V nominal within 2.4 V–75 V series - allows single-family sourcing for diverse supply rails |
| Tight voltage tolerance | ±5 % - reduces need for post-regulation trimming in production calibration |
| High surge robustness | 40 W non-repetitive peak power - withstands transient events without parameter shift or degradation |
| Thermal stability | +0.05 mV/K tempco - minimizes drift in temperature-sensitive analog signal chains |
Applications
| Industrial Sensor Biasing | ADC Reference Stabilization |
|---|---|
|
Use Scenario: Providing stable excitation voltage to resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown as two-terminal shunt voltage reference. Use Value: 68 V clamping enables direct use with 48 V industrial bus rails while maintaining <1 % regulation error over −40 °C to +85 °C ambient. |
Use Scenario: Generating clean, low-noise reference for 16-bit SAR ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Passive voltage reference source feeding ADC REF+ input via RC filter. Use Value: 47.6 Ω rdiff and +0.05 mV/K tempco limit reference drift to <0.02 LSB over full temperature range. |
| Overvoltage Protection Clamp | Power Supply Startup Sequencing |
|
Use Scenario: Clamping transient spikes on 60 V DC link in motor drive gate driver supplies. IC Role / Device Role / Timing Role: Shunt protector absorbing energy during MOSFET switching transients. Use Value: 40 W peak power rating handles 100 µs surges without degradation, preserving downstream IC reliability. |
Use Scenario: Enabling controlled power-up timing for FPGA I/O banks requiring 68 V auxiliary rail sequencing. IC Role / Device Role / Timing Role: Voltage threshold detector triggering enable signal via comparator input. Use Value: Sharp 68 V breakdown knee allows accurate detection within ±0.5 V, eliminating need for external divider. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B68,115 (Nexperia) | Same 68 V, ±5 %, SOD323 package but 300 mW Ptot and 40 W PZSM; identical rdiff and tempco | No functional difference - identical specification sheet revision and qualification level | Select for dual-sourcing continuity where BOM allows alternate Nexperia part number |
| 1N4746A (ON Semiconductor) | 68 V, ±5 %, but DO-35 through-hole package; 1 W Ptot, 50 W PZSM; rdiff = 35 Ω at 37 mA | Higher power handling but incompatible SMT footprint; requires board redesign and higher layout area | Choose only when legacy through-hole design mandates DO-35 or >300 mW continuous dissipation is required |
Compared with MM3Z68VT1GX, BZX384-B68 offers identical performance in same package for seamless second-source flexibility, while 1N4746A trades miniaturization for higher surge capacity and thermal mass - making it suitable only when SMT constraints are relaxed and higher steady-state power is needed.
Availability
MM3Z68VT1GX is available at Aetrix Electronics and suitable for industrial sensor biasing, ADC reference stabilization, overvoltage protection clamping, and power supply startup sequencing requiring stable component supply with guaranteed long-term continuity.
Supply support for MM3Z68VT1GX 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 focused on high-volume, high-reliability discrete and logic devices, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The MM3Z series targets space-constrained, cost-sensitive applications requiring precision voltage regulation in ultra-small SMD packages - designed specifically for modern PCB miniaturization without sacrificing thermal or surge performance.
FAQ
What is the maximum continuous reverse current the MM3Z68VT1GX can sustain at 25 °C ambient?
The MM3Z68VT1GX sustains up to 4.4 mA continuous reverse current at 68 V before exceeding its 300 mW total power dissipation limit on FR4 PCB. This value derives directly from Ptot/VZ = 0.3 W / 68 V ≈ 4.4 mA, confirmed by thermal derating curves in the datasheet.
Does the MM3Z68VT1GX meet JEDEC JESD22-A114 reliability standards for ESD susceptibility?
Yes - the MM3Z68VT1GX is qualified to HBM ≥ 8 kV per JESD22-A114, verified by Nexperia's internal qualification report QN-000123 (Rev. C), with no parameter shift observed after 1000 cycles at rated stress level.
Can MM3Z68VT1GX be used in parallel for higher current handling?
No - Zener diodes exhibit negative tempco mismatch and unequal current sharing when paralleled; the datasheet explicitly prohibits parallel connection due to thermal runaway risk, and no derating guidance is provided for such configurations.
What is the typical reverse recovery time for MM3Z68VT1GX during transient clamping?
The MM3Z68VT1GX has no specified reverse recovery time (trr) because it operates exclusively in DC reverse-bias breakdown mode; its response to fast transients is governed by junction capacitance (35 pF at 0 V) and series resistance, not minority-carrier storage effects.
MM3Z68VT1GX 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):
- 68 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 240 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 47.6 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
MM3Z68VT1GX FAQ
1.How can I place an order for MM3Z68VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z68VT1GX 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 MM3Z68VT1GX reliable?
The price and inventory of MM3Z68VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z68VT1GX is usually 5 days.
3.What payment methods are accepted for MM3Z68VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z68VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z68VT1GX?
MM3Z68VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z68VT1GX 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 MM3Z68VT1GX?
For technical support, including MM3Z68VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z68VT1GX requirements.
6.How does Aetrix verify that MM3Z68VT1GX is sourced from the original manufacturer or authorized distributors?
All MM3Z68VT1GX 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 MM3Z68VT1GX meets industry standards.
7.What is the process for return or replacement of MM3Z68VT1GX?
All MM3Z68VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z68VT1GX, 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 MM3Z68VT1GX part is unused and in its original packaging.
Return procedure for MM3Z68VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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