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Nexperia USA Inc. SZMM3Z8V2T1GX
- Part No.:
- SZMM3Z8V2T1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z8V2T1GX.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:26,251
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Product details
Overview
SZMM3Z8V2T1GX from Nexperia is a Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision voltage reference and low-power regulation. It delivers nominal 8.2 V Zener voltage at IZ = 5 mA, with ±5 % tolerance, 0.5 Ω differential resistance, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SZMM3Z8V2T1GX datasheet, SZMM3Z8V2T1GX pinout, SZMM3Z8V2T1GX application, or SZMM3Z8V2T1GX equivalent, this page provides verified electrical characteristics, thermal behavior, cathode/anode terminal mapping, and automotive-grade reliability data - critical for ECU power rail clamping, sensor biasing, and overvoltage protection in space-constrained designs.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable output voltage under varying load and temperature conditions. Its 8.2 V nominal working voltage is specified at 5 mA test current, with low 0.5 Ω dynamic resistance ensuring minimal voltage shift across operating current range.
Thermal performance is defined by Rth(j-a) = 415 K/W (free air) and Rth(j-sp) = 110 K/W (solder point), enabling reliable operation up to 150 °C junction temperature. The device meets AEC-Q101 stress-test requirements for automotive discrete semiconductors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 7.76 V to 8.64 V at IZ = 5 mA - defines tight regulation window for 8.2 V nominal rail |
| Differential resistance rdiff | 0.5 Ω - ensures <1 mV output change per 2 mA load variation, critical for stable reference |
| Temperature coefficient SZ | +3.2 mV/K to +6.2 mV/K - quantifies positive drift rate, enabling accurate thermal compensation |
| Total power dissipation Ptot | 300 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling |
| Non-repetitive peak reverse power | 40 W at tp = 100 µs - supports transient surge suppression in automotive load-dump scenarios |
| Reverse current IR | ≤ 60 µA at VR = 7.5 V - confirms low leakage below breakdown, essential for battery-powered standby circuits |
| Forward voltage VF | 1.1 V at IF = 100 mA - defines conduction loss when used in forward-biased protection paths |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic case with 2 leads, 2.7 mm × 1.6 mm footprint, 0.45 mm profile. Cathode identified by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes Zener breakdown |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation or clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control units and body electronics |
| ±5 % Zener voltage tolerance | Enables precise voltage setting without external trimming in cost-sensitive consumer and industrial systems |
| Low 0.5 Ω differential resistance | Maintains regulation accuracy across 1–10 mA operating range, reducing need for buffering stages |
| 415 K/W junction-to-ambient thermal resistance | Supports natural convection cooling on standard FR4 PCBs without heatsinking in low-power nodes |
| SOD323 ultra-small footprint | Reduces board area by >50 % vs. SOD123, enabling high-density layout in wearables and ADAS sensors |
Applications
| Automotive ECU Voltage Clamp | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Protecting microcontroller I/O pins and analog front-ends from load-dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Zener clamp placed between supply rail and ground to shunt excess energy during ISO 7637-2 pulse 5a events. Use Value: 40 W non-repetitive surge rating absorbs 100 µs spikes without degradation, preserving downstream IC integrity. |
Use Scenario: Providing stable excitation voltage for resistive temperature detectors (RTDs) in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision voltage reference source delivering 8.2 V ±5 % to bridge circuitry with minimal drift. Use Value: +3.2 to +6.2 mV/K temperature coefficient allows predictable compensation, improving RTD measurement linearity over −40 to +125 °C. |
| Portable Medical Device Power Rail Stabilization | IoT Node Battery Monitoring Threshold |
Use Scenario: Regulating auxiliary 8.2 V rail for op-amp signal conditioning in handheld diagnostic equipment powered by Li-ion batteries. IC Role / Device Role / Timing Role: Low-power Zener shunt regulator maintaining constant voltage despite battery discharge from 8.8 V to 7.2 V. Use Value: 60 µA max reverse leakage at 7.5 V minimizes quiescent current drain, extending battery life in always-on monitoring modes. |
Use Scenario: Detecting end-of-charge or low-battery condition in Bluetooth LE asset trackers using comparator threshold reference. IC Role / Device Role / Timing Role: Fixed 8.2 V reference input to comparator comparing against scaled battery voltage. Use Value: 0.5 Ω dynamic resistance ensures threshold remains stable across temperature and aging, reducing false low-battery alerts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B8V2,115 (Nexperia) | Same 8.2 V nominal, ±5 %, but in SOD323-2 variant with tighter 2 % tolerance option; identical thermal specs | Preferred where tighter initial tolerance required without changing layout; same AEC-Q101 qualification | Select when design requires guaranteed ≤2 % VZ deviation at 5 mA, accepting minor cost premium |
| MMBZ5231BS-7-F (Diodes Inc.) | 8.2 V nominal, ±5 %, but rated only to 200 mW Ptot; no AEC-Q101 qualification; higher rdiff = 10 Ω | Suitable for non-automotive consumer devices with lower surge exposure and relaxed regulation stability | Choose only for cost-driven commercial applications where 40 W surge immunity and automotive qualification are not required |
Compared with BZX384-B8V2,115, SZMM3Z8V2T1GX offers identical automotive qualification and thermal performance but at standard ±5 % tolerance; versus MMBZ5231BS-7-F, it delivers 50 % higher power rating, 20× lower dynamic resistance, and validated automotive reliability - making it the sole choice for safety-critical or high-stability designs.
Availability
SZMM3Z8V2T1GX is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor biasing, portable medical power rails, and IoT battery monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SZMM3Z8V2T1GX 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 leading global semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-performance, high-reliability discrete and logic devices.
This device belongs to the SZMM3Z series of AEC-Q101-qualified Zener diodes engineered specifically for automotive voltage regulation and clamping, emphasizing small size, low dynamic resistance, and robust transient handling in harsh environments.
FAQ
What is the maximum continuous reverse current this Zener can handle at 25 °C ambient?
The device supports up to 200 mA forward current per limiting values, but for Zener operation, the maximum continuous reverse current is derived from its 300 mW total power dissipation limit. At nominal 8.2 V, this yields ~36.6 mA continuous Zener current (300 mW ÷ 8.2 V), assuming no additional thermal derating beyond the specified 25 °C ambient condition.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a specified temperature coefficient of +3.2 to +6.2 mV/K, the Zener voltage increases by approximately 0.9 to 1.8 V across the full −40 °C to +125 °C junction temperature range. This drift must be accounted for in precision reference applications; however, the low 0.5 Ω dynamic resistance helps minimize additional error from current variation.
Can this diode be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients at low voltages and positive above ~5 V, but manufacturing tolerances prevent reliable current sharing. Parallel connection risks thermal runaway due to mismatched VZ and rdiff, even within the same batch. For higher power, use a single higher-rated device or active regulation.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes - Nexperia provides validated reflow footprint dimensions (Fig. 12) and specifies compatibility with JEDEC J-STD-020 moisture sensitivity level 1. The package withstands peak reflow temperatures up to 260 °C for 10 seconds, and the recommended solder paste stencil aperture matches the 0.5 mm pad width with 0.6 mm spacing.
SZMM3Z8V2T1GX 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):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 5 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
SZMM3Z8V2T1GX FAQ
1.How can I place an order for SZMM3Z8V2T1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z8V2T1GX 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 SZMM3Z8V2T1GX reliable?
The price and inventory of SZMM3Z8V2T1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z8V2T1GX is usually 5 days.
3.What payment methods are accepted for SZMM3Z8V2T1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z8V2T1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z8V2T1GX?
SZMM3Z8V2T1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z8V2T1GX 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 SZMM3Z8V2T1GX?
For technical support, including SZMM3Z8V2T1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z8V2T1GX requirements.
6.How does Aetrix verify that SZMM3Z8V2T1GX is sourced from the original manufacturer or authorized distributors?
All SZMM3Z8V2T1GX 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 SZMM3Z8V2T1GX meets industry standards.
7.What is the process for return or replacement of SZMM3Z8V2T1GX?
All SZMM3Z8V2T1GX units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z8V2T1GX, 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 SZMM3Z8V2T1GX part is unused and in its original packaging.
Return procedure for SZMM3Z8V2T1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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