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Nexperia USA Inc. SZMM3Z36VT1GX
- Part No.:
- SZMM3Z36VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z36VT1GX.pdf
- Description:
- DIODE ZENER 36V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:95,660
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Product details
Overview
SZMM3Z36VT1GX from Nexperia is a Zener voltage regulator diode in SOD323 (SC-76) package, rated for 36 V nominal Zener voltage (34.0–38.0 V), ±5 % tolerance, 25.2 Ω differential resistance at IZ = 2 mA, and AEC-Q101 qualification. It delivers stable reference voltage in low-power regulation circuits such as automotive sensor biasing and microcontroller reset supervision.
For engineers reviewing the SZMM3Z36VT1GX datasheet, SZMM3Z36VT1GX pinout, SZMM3Z36VT1GX application, or SZMM3Z36VT1GX equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (Rth(j-a) = 415 K/W), non-repetitive surge capability (40 W), and automotive-grade reliability under −55 °C to +150 °C ambient conditions.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable DC reference voltage across its terminals when biased with a current-limiting resistor. Its low differential resistance (25.2 Ω) ensures minimal voltage deviation over load current changes, while the negative temperature coefficient (−0.05 mV/K typical) enables predictable drift behavior in temperature-sensitive designs.
The device is optimized for surface-mount applications on FR4 PCBs with standard single-sided copper, achieving Rth(j-sp) = 110 K/W to cathode solder point. Its 300 mW total power dissipation and 40 W non-repetitive peak reverse power rating support transient suppression and precision regulation in space-constrained automotive and industrial modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34.0 V min / 38.0 V max at IZ = 2 mA - defines usable regulation window for 36 V nominal reference |
| Differential Resistance (rdiff) | 25.2 Ω max at IZ = 2 mA - determines output impedance and load regulation error |
| Reverse Current (IR) | 350 µA max at VR = 30 V - sets minimum leakage impact on high-impedance bias networks |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - limits continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 µs - supports ESD/surge clamping in transient protection stages |
| Junction Temperature (Tj) | 150 °C max - enables operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test qualification for discrete semiconductors |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads; dimensions 2.7 mm × 1.6 mm × 1.1 mm; marking bar denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 25.2 Ω max at 2 mA - improves voltage stability under varying load currents |
| AEC-Q101 qualification | Validated for automotive use - assures reliability in engine control, ADAS, and body electronics |
| Small SOD323 footprint | 2.7 mm × 1.6 mm - enables high-density layout in compact ECUs and sensor modules |
| Wide Zener voltage range | 34.0–38.0 V for 36 V nominal - accommodates design margin and production variation |
| Thermal performance | Rth(j-a) = 415 K/W - informs derating requirements for ambient temperatures above 25 °C |
Applications
| Automotive Sensor Biasing | Microcontroller Reset Supervision |
|---|---|
Use Scenario: Providing stable reference voltage to analog front-ends of pressure, temperature, or position sensors in engine management systems. IC Role / Device Role / Timing Role: Zener diode acts as precision shunt voltage reference, maintaining sensor excitation voltage within ±5 % tolerance. Use Value: Ensures sensor output linearity and ADC accuracy despite battery voltage fluctuations between 9 V and 16 V. |
Use Scenario: Generating clean reset threshold for 3.3 V or 5 V microcontrollers in telematics control units. IC Role / Device Role / Timing Role: Functions as adjustable reset voltage source in conjunction with RC timing network. Use Value: Delivers deterministic brown-out detection with <1 % hysteresis due to tight 36 V Zener tolerance and low rdiff. |
| Industrial Power Supply Monitoring | LED Driver Reference Stabilization |
Use Scenario: Monitoring intermediate rail voltages (e.g., 36 V bus) in programmable logic controller (PLC) power stages. IC Role / Device Role / Timing Role: Shunt regulator establishes fault-detection threshold for overvoltage protection circuitry. Use Value: Enables fast response (<100 µs) to overvoltage events via comparator input tied to Zener node. |
Use Scenario: Stabilizing reference voltage for constant-current LED driver ICs in automotive lighting modules. IC Role / Device Role / Timing Role: Provides temperature-compensated voltage reference to driver feedback loop. Use Value: Maintains LED brightness consistency across −40 °C to +125 °C ambient by leveraging known −0.05 mV/K coefficient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B36,115 | Same 36 V nominal Zener, but SOD323 package with ±2 % tolerance and lower rdiff (15 Ω) | Higher precision required in metrology-grade references; tighter tolerance increases cost | Select when ±2 % VZ accuracy and sub-20 Ω impedance are mandatory for low-drift designs |
| MMSZ5245B-TP | 36 V nominal, SOD-123 package, ±5 % tolerance, higher Ptot (500 mW), but not AEC-Q101 qualified | Suitable for industrial/commercial power supplies where automotive qualification is unnecessary | Choose for cost-sensitive non-automotive applications needing higher continuous power handling |
Compared with BZX384-B36,115, SZMM3Z36VT1GX trades tighter tolerance for AEC-Q101 compliance and lower cost; versus MMSZ5245B-TP, it sacrifices 200 mW dissipation headroom for guaranteed automotive reliability and smaller footprint.
Availability
SZMM3Z36VT1GX is available at Aetrix Electronics and suitable for automotive sensor biasing, microcontroller reset supervision, and industrial power monitoring requiring stable component supply, AEC-Q101 assurance, and SOD323 space efficiency.
Supply support for SZMM3Z36VT1GX 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 components and energy-efficient solutions.
The SZMM3Z series targets automotive and industrial Zener regulation needs, emphasizing AEC-Q101 qualification, miniature SOD323 packaging, and consistent parametric performance across wide voltage grades (2.4 V to 75 V).
FAQ
What is the maximum continuous forward current for SZMM3Z36VT1GX?
The device is a Zener diode intended for reverse-bias operation; its absolute maximum forward current is 200 mA per limiting values table. However, forward conduction is not its functional mode - sustained forward bias exceeds design intent and risks thermal overstress without regulation benefit.
Can SZMM3Z36VT1GX be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients and manufacturing variations that cause current hogging when paralleled. Uneven current sharing leads to thermal runaway and premature failure; external ballasting resistors or dedicated high-power regulators are required instead.
Is the 40 W non-repetitive peak power rating applicable to DC operation?
No - the 40 W rating applies only to short-duration square-wave pulses (tp = 100 µs, duty cycle ≤ 0.02). For DC operation, the device is limited to 300 mW total power dissipation at 25 °C ambient; exceeding this requires thermal derating per Rth(j-a) = 415 K/W.
How does the marking code 'DN' correspond to SZMM3Z36VT1GX?
'DN' is the top-side laser marking per Table 4 of the datasheet, uniquely identifying the 36 V variant within the SZMM3Z series. The bar adjacent to the marking indicates the cathode (Pin 1), enabling unambiguous orientation during automated placement and manual inspection.
SZMM3Z36VT1GX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SZMM3Z36VT1GX FAQ
1.How can I place an order for SZMM3Z36VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z36VT1GX 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 SZMM3Z36VT1GX reliable?
The price and inventory of SZMM3Z36VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z36VT1GX is usually 5 days.
3.What payment methods are accepted for SZMM3Z36VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z36VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z36VT1GX?
SZMM3Z36VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z36VT1GX 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 SZMM3Z36VT1GX?
For technical support, including SZMM3Z36VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z36VT1GX requirements.
6.How does Aetrix verify that SZMM3Z36VT1GX is sourced from the original manufacturer or authorized distributors?
All SZMM3Z36VT1GX 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 SZMM3Z36VT1GX meets industry standards.
7.What is the process for return or replacement of SZMM3Z36VT1GX?
All SZMM3Z36VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z36VT1GX, 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 SZMM3Z36VT1GX part is unused and in its original packaging.
Return procedure for SZMM3Z36VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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