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Nexperia USA Inc. SZMM5Z4V3T5GF
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- Part No.:
- SZMM5Z4V3T5GF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z4V3T5GF.pdf
- Description:
- DIODE ZENER 4.3V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:49,085
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Product details
Overview
SZMM5Z4V3T5GF from Nexperia is a 4.3 V ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, designed for precision voltage regulation and overvoltage protection in space-constrained automotive and industrial circuits.
For engineers reviewing the SZMM5Z4V3T5GF datasheet, SZMM5Z4V3T5GF pinout, SZMM5Z4V3T5GF application, or SZMM5Z4V3T5GF equivalent, this device supports low-noise reference generation, ESD-tolerant biasing, and transient-suppressed signal conditioning where tight voltage tolerance, low differential resistance (3.0 Ω at IZ = 5 mA), and AEC-Q101 qualification are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 4.21–4.39 V regulation at 5 mA test current, with temperature coefficient of −3.5 to 0 mV/K and typical junction-to-solder-point thermal resistance of 65 K/W. Its ultra-small SOD523 footprint enables placement near IC power pins for local rail stabilization.
It delivers 1.1 V forward voltage at 100 mA and sustains ≤100 µs surge pulses up to 40 W without degradation. Reverse leakage remains ≤90 µA at 1 V reverse bias, supporting low-power standby regulation in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.21–4.39 V at IZ = 5 mA - ensures precise 4.3 V nominal regulation with ±2 % tolerance for stable reference generation |
| Differential Resistance (rdiff) | 3.0 Ω max at IZ = 5 mA - minimizes output voltage variation under load changes in feedback networks |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - supports continuous operation on standard FR4 PCB with 35 mm² copper area at cathode |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs - provides robust transient suppression against ESD and inductive spikes |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - enables use as low-drop rectifier or clamp in bidirectional protection schemes |
| Reverse Leakage (IR) | 90 µA max at VR = 1 V - ensures minimal quiescent current draw in always-on monitoring circuits |
| Thermal Resistance (Rth(j-sp)) | 65 K/W - allows efficient heat transfer to solder point for reliable operation up to 150 °C junction temperature |
Pinout & Package
Package: SOD523 (SC-79), ultra-small surface-mount plastic package with flat leads and cathode marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated output node; marking bar identifies polarity for correct PCB orientation and reverse-bias mounting |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms the reference return path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
| ±2 % Zener voltage tolerance | Reduces need for post-assembly trimming in precision analog references and sensor excitation circuits |
| Low differential resistance (3.0 Ω) | Improves regulation accuracy across varying load currents in voltage monitor and feedback divider applications |
| Ultra-compact SOD523 footprint | Enables placement within 1 mm of IC power pins for localized noise suppression without board real estate penalty |
| 150 °C maximum junction temperature | Supports operation in under-hood automotive modules and high-temperature industrial control enclosures |
Applications
| Automotive Sensor Biasing | Industrial ADC Reference Stabilization |
|---|---|
|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in engine coolant and exhaust gas sensors. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed 4.3 V reference independent of supply rail fluctuations. Use Value: Maintains <±0.5 % reference stability over −40 to +125 °C ambient, enabling sub-0.1 °C temperature resolution. |
Use Scenario: Stabilizing reference input to 12-bit SAR ADCs in programmable logic controllers (PLCs) and data acquisition modules. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying clean 4.3 V to ADC VREF pin, decoupled from noisy digital supply rails. Use Value: Limits reference drift to <1 LSB over full temperature range due to low rdiff and tight VZ tolerance. |
| USB Port Overvoltage Clamp | Low-Power Microcontroller Reset Circuit |
|
Use Scenario: Protecting USB 2.0 data lines and VBUS detection circuitry from transient overvoltage events in automotive infotainment head units. IC Role / Device Role / Timing Role: Fast-acting shunt clamp placed between D+ and ground, triggered by >4.3 V excursions. Use Value: Clamps 1 kV ESD pulses (IEC 61000-4-2) within 10 ns while dissipating <40 W peak energy without failure. |
Use Scenario: Generating a clean reset threshold for ARM Cortex-M0+ microcontrollers in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Zener-based voltage detector feeding comparator input to assert reset when main 5 V rail drops below 4.3 V. Use Value: Enables deterministic brown-out detection with <10 µA quiescent current and immunity to supply ripple up to 100 mVpp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C4V3 | Same 4.3 V nominal, ±5 % tolerance, 350 mW Ptot, SOD-323 package (larger footprint) | Higher power rating but looser tolerance; less suitable for precision references | Select when higher surge margin is needed and board space permits larger SOD-323 footprint |
| MMSZ4V3ET1G | 4.3 V nominal, ±5 % tolerance, 350 mW Ptot, SOD-123 package (3× larger than SOD523) | Lower thermal resistance (220 K/W), but incompatible with ultra-dense layouts | Prefer for high-reliability industrial designs requiring proven long-term stability over miniaturization |
Compared with BZX584-C4V3 and MMSZ4V3ET1G, SZMM5Z4V3T5GF offers the tightest voltage tolerance (±2 %) and smallest footprint (SOD523), making it optimal for automotive sensor modules and portable electronics where precision and space are critical constraints.
Availability
SZMM5Z4V3T5GF is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial ADC reference stabilization, and USB port overvoltage clamping requiring stable component supply with AEC-Q101 assurance and traceable sourcing.
Supply support for SZMM5Z4V3T5GF 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 devices with focus on efficiency, miniaturization, and automotive-grade quality.
SZMM5Z series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for precision voltage regulation and transient protection in harsh-environment automotive and industrial control systems.
FAQ
What is the maximum reverse voltage this Zener can sustain before breakdown?
The nominal Zener voltage is 4.3 V with guaranteed range of 4.21–4.39 V at 5 mA test current. Breakdown occurs within this band; operation above 4.39 V risks exceeding absolute maximum ratings. The device is not rated for sustained reverse bias beyond its specified VZ range.
Can this diode be used in forward conduction mode?
Yes - it exhibits 1.1 V maximum forward voltage at 100 mA, making it suitable for low-current rectification or polarity protection. However, its primary design intent and characterization are for reverse-bias Zener operation; forward characteristics are secondary and not optimized for high-efficiency rectification.
How does the −3.5 to 0 mV/K temperature coefficient affect regulation accuracy?
This coefficient indicates that VZ may decrease by up to 3.5 mV per °C rise in junction temperature. Over a 100 °C range (−40 to +60 °C ambient), worst-case drift is ±350 mV - but actual shift is typically smaller due to self-heating limits and PCB thermal mass, and is mitigated by using low IZ bias currents.
Is the SOD523 package compatible with standard reflow profiles?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended solder land pattern (Fig. 10) uses 0.5 mm pad width, 1.4 mm length, and 0.4 mm spacing. Peak temperature must not exceed 260 °C for ≤10 seconds to avoid package damage or delamination.
SZMM5Z4V3T5GF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 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-523
SZMM5Z4V3T5GF FAQ
1.How can I place an order for SZMM5Z4V3T5GF through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z4V3T5GF 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 SZMM5Z4V3T5GF reliable?
The price and inventory of SZMM5Z4V3T5GF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z4V3T5GF is usually 5 days.
3.What payment methods are accepted for SZMM5Z4V3T5GF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z4V3T5GF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z4V3T5GF?
SZMM5Z4V3T5GF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z4V3T5GF 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 SZMM5Z4V3T5GF?
For technical support, including SZMM5Z4V3T5GF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z4V3T5GF requirements.
6.How does Aetrix verify that SZMM5Z4V3T5GF is sourced from the original manufacturer or authorized distributors?
All SZMM5Z4V3T5GF 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 SZMM5Z4V3T5GF meets industry standards.
7.What is the process for return or replacement of SZMM5Z4V3T5GF?
All SZMM5Z4V3T5GF units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z4V3T5GF, 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 SZMM5Z4V3T5GF part is unused and in its original packaging.
Return procedure for SZMM5Z4V3T5GF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZMM5Z4V3T5GF Tags
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