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Nexperia USA Inc. MM3Z33VT1GX
- Part No.:
- MM3Z33VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z33VT1GX.pdf
- Description:
- DIODE ZENER 33V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,680
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Product details
Overview
MM3Z33VT1GX from Nexperia is a 33 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 23.1 Ω typical differential resistance at IZ = 2 mA and 325 µA max reverse current at VR = 30 V - used for precision voltage reference and overvoltage clamping in low-power analog signal conditioning circuits.
For engineers reviewing the MM3Z33VT1GX datasheet, MM3Z33VT1GX pinout, MM3Z33VT1GX application, or MM3Z33VT1GX equivalent, this page delivers verified Zener parameters, cathode/anode terminal mapping, thermal resistance values (Rth(j-a) = 415 K/W), junction temperature limit (150 °C), and real-world clamping behavior under transient surge conditions.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 33 V regulation across load and line variations, with low dynamic impedance enabling tight voltage control in feedback paths. Its 0.05 %/K temperature coefficient ensures minimal drift over −55 °C to +150 °C ambient range.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it supports reflow and wave soldering per defined footprints and exhibits 45 pF capacitance at 1 MHz and 0 V bias - critical for high-frequency noise suppression without signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 31.0 V to 35.0 V at IZ = 2 mA - defines regulated output voltage window under nominal bias |
| Differential Resistance rdiff | 23.1 Ω max at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Reverse Current IR | 325 µA max at VR = 30 V - sets leakage-induced error in high-impedance reference nodes |
| Total Power Dissipation Ptot | 300 mW at Tamb = 25 °C - limits continuous thermal stress on FR4 PCB mounting |
| Non-repetitive Peak Power PZSM | 40 W at tp = 100 µs - enables transient overvoltage suppression without failure |
| Junction Temperature Tj | 150 °C max - constrains maximum allowable thermal rise above ambient |
| Thermal Resistance Rth(j-a) | 415 K/W - quantifies self-heating effect under steady-state operation |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; marking bar denotes cathode; footprint optimized for reflow and wave soldering per Nexperia's recommended land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; accepts reverse-bias current during Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for voltage reference |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 23.1 Ω max enables <1 % output deviation under 1 mA load variation |
| Stable temperature coefficient | ±0.05 mV/K minimizes drift across industrial temperature range |
| High surge robustness | 40 W non-repetitive peak power withstands ESD and inductive kick events |
| Small-footprint packaging | SOD323 (1.35 × 0.85 mm) saves board space in dense analog layouts |
| Precision voltage tolerance | ±5 % ensures predictable clamping threshold without post-production trimming |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature transmitters. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 33 V bias to op-amp gain stage. Use Value: 23.1 Ω rdiff maintains <0.5 LSB error across 0–100 °C operating range. |
Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as fast-acting crowbar element. Use Value: 40 W PZSM rating absorbs 100 µs ESD pulses without degradation. |
| Programmable Logic Controller Input Protection | Low-Power IoT Node Voltage Reference |
|
Use Scenario: Protecting 24 V DC digital input channels from field-wiring faults. IC Role / Device Role / Timing Role: Shunt regulator limiting input voltage to safe MCU GPIO level. Use Value: 325 µA IR at 30 V ensures negligible standby current in always-on monitoring mode. |
Use Scenario: Providing stable bias for ultra-low-power LDO in battery-operated sensor nodes. IC Role / Device Role / Timing Role: Precision Zener reference setting LDO feedback divider ratio. Use Value: ±5 % VZ tolerance eliminates need for external calibration in production test. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B33,115 (Nexperia) | SOD323 package, same 33 V rating but tighter ±2 % tolerance; 200 mW Ptot | Better accuracy for metrology-grade references; lower power margin for surge handling | Select when absolute voltage precision outweighs transient robustness |
| 1N4747A (ON Semiconductor) | DO-41 through-hole package; 33 V ±5 %; 1 W Ptot; higher rdiff (35 Ω) | Higher power handling but larger footprint and slower response due to junction capacitance | Select for legacy through-hole designs requiring higher continuous dissipation |
Compared with BZX384-B33,115, MM3Z33VT1GX trades ±2 % accuracy for 50 % higher surge power (40 W vs. 20 W); versus 1N4747A, it offers 75 % smaller footprint and 35 % lower dynamic impedance but requires SMT assembly capability.
Availability
MM3Z33VT1GX is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB protection circuits, PLC input stages, and low-power IoT voltage references requiring stable component supply with guaranteed long-term sourcing.
Supply support for MM3Z33VT1GX 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, with leadership in automotive-qualified and industrial-grade components.
The MM3Z series targets cost-sensitive, space-constrained applications requiring stable Zener regulation in consumer, computing, and industrial electronics - emphasizing small size, tight tolerances, and robust surge performance.
FAQ
What is the maximum continuous reverse current the MM3Z33VT1GX can sustain without exceeding its 300 mW power limit?
At 33 V Zener voltage, the maximum continuous reverse current is 9.1 mA (Ptot/VZ = 0.3 W / 33 V), assuming 25 °C ambient and standard FR4 PCB mounting. Derating applies above 25 °C per the 415 K/W thermal resistance specification.
How does the 23.1 Ω differential resistance affect regulation accuracy under varying load conditions?
A 23.1 Ω rdiff causes a 23.1 mV change in output voltage per 1 mA change in Zener current. In a 1 mA reference circuit, this yields ±0.07 % regulation error - sufficient for 12-bit systems but insufficient for 16-bit precision without additional buffering.
Can MM3Z33VT1GX be used in parallel to increase power handling?
No - Zener diodes exhibit negative temperature coefficients and mismatched VZ tolerances, causing current hogging and thermal runaway when paralleled. For higher power, use a single higher-rated device or active regulation instead.
What is the significance of the 45 pF diode capacitance at 1 MHz and 0 V bias?
This capacitance forms a low-pass filter with source impedance; at 10 kΩ source impedance, it creates a 350 kHz cutoff, making the device unsuitable for >100 kHz signal path clamping but effective for DC and low-frequency reference stability.
MM3Z33VT1GX 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):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.1 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
MM3Z33VT1GX FAQ
1.How can I place an order for MM3Z33VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z33VT1GX 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 MM3Z33VT1GX reliable?
The price and inventory of MM3Z33VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z33VT1GX is usually 5 days.
3.What payment methods are accepted for MM3Z33VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z33VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z33VT1GX?
MM3Z33VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z33VT1GX 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 MM3Z33VT1GX?
For technical support, including MM3Z33VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z33VT1GX requirements.
6.How does Aetrix verify that MM3Z33VT1GX is sourced from the original manufacturer or authorized distributors?
All MM3Z33VT1GX 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 MM3Z33VT1GX meets industry standards.
7.What is the process for return or replacement of MM3Z33VT1GX?
All MM3Z33VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z33VT1GX, 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 MM3Z33VT1GX part is unused and in its original packaging.
Return procedure for MM3Z33VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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