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Nexperia USA Inc. SZMM5Z24VT5GF
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- Part No.:
- SZMM5Z24VT5GF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z24VT5GF.pdf
- Description:
- DIODE ZENER 24V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
SZMM5Z24VT5GF from Nexperia is a 24 V ±2 % Zener voltage regulator diode in SOD523 (SC-79) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, with 16.8 Ω typical differential resistance at IZ = 5 mA and AEC-Q101 qualification for automotive use.
For engineers reviewing the SZMM5Z24VT5GF datasheet, SZMM5Z24VT5GF pinout, SZMM5Z24VT5GF application, or SZMM5Z24VT5GF equivalent, this device serves as a precision shunt reference in low-power voltage regulation, overvoltage protection, and biasing circuits where ultra-small footprint, thermal stability, and automotive-grade reliability are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 24 V reference across its terminals under controlled current conditions (IZ = 5 mA). Its temperature coefficient of +18.4 to +22.0 mV/K ensures predictable drift behavior over −55 °C to +150 °C ambient range.
The device exhibits low junction-to-solder-point thermal resistance (65 K/W), enabling effective heat transfer in space-constrained PCB layouts. Its 55 pF capacitance at 1 MHz and 0 V reverse bias supports stable performance in moderate-frequency regulation and filtering applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.52 V to 24.48 V at IZ = 5 mA - tight ±2 % tolerance enables accurate voltage clamping without calibration. |
| Differential Resistance (rdiff) | ≤16.8 Ω at IZ = 5 mA - low impedance ensures minimal output voltage variation under load changes. |
| Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB with 35 mm² copper - defines maximum continuous DC power handling in standard layout. |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - supports transient surge suppression in ESD or load-dump events. |
| Reverse Current (IR) | ≤70 µA at VR = 20 V - low leakage preserves efficiency in high-impedance bias networks. |
| Junction Temperature (Tj) | −55 °C to +150 °C - wide operating range meets under-hood automotive and industrial environmental requirements. |
| Thermal Resistance (Rth(j-sp)) | 65 K/W - enables reliable thermal coupling to PCB solder point for predictable derating. |
Pinout & Package
The SZMM5Z24VT5GF is housed in an ultra-compact SOD523 (SC-79) surface-mount plastic package measuring 1.25 mm × 0.85 mm × 0.65 mm, with cathode identified by a marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse current during Zener conduction; marked with bar on package. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path for voltage reference operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics requiring stress-tested discrete semiconductors. |
| ±2 % Zener voltage tolerance | Reduces need for external trimming in precision reference designs, improving BOM simplicity and production yield. |
| Low 55 pF junction capacitance | Minimizes signal distortion and phase shift in feedback paths of LDOs or op-amp references up to ~1 MHz. |
| Ultra-small SOD523 footprint | Enables placement in dense routing areas such as portable electronics, sensor modules, and automotive ECUs with strict board area limits. |
| 150 °C maximum junction temperature | Supports operation in high-temperature environments like powertrain modules without derating below full rating. |
Applications
| Automotive Sensor Biasing | USB Port Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 24 V bias to analog front-end circuitry in wheel-speed or pressure sensors within engine compartments. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for op-amps and ADC drivers. Use Value: Maintains signal integrity despite ambient swings from −40 °C to +125 °C and suppresses transients per ISO 7637-2 Pulse 1/2a. |
Use Scenario: Clamping reverse voltage spikes on USB VBUS lines caused by hot-plug in-vehicle infotainment systems. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VBUS and GND, triggered above 24 V. Use Value: Limits peak voltage to ≤24.5 V with <40 ns response, protecting downstream USB controllers rated for 25 V absolute max. |
| Industrial PLC Input Protection | Low-Power IoT Node Reference |
|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers against field-wiring faults and induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp in series with current-limiting resistor on input stage. Use Value: Absorbs 40 W single-event surges while holding clamped voltage within 24.5 V, preventing latch-up in optocouplers. |
Use Scenario: Generating precise 24 V reference for battery-monitoring ADCs in wireless sensor nodes powered by LiFePO₄ stacks. IC Role / Device Role / Timing Role: Precision shunt reference supplying known voltage to ratiometric measurement circuits. Use Value: Delivers <±0.5 % total error over temperature and life due to ±2 % initial tolerance and +20 mV/K TC compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C24 | Same 24 V nominal, ±5 % tolerance, SOD-523 package, but only 200 mW Ptot and no AEC-Q101 qualification. | Limited to commercial-grade consumer or industrial equipment without automotive qualification requirements. | Select when cost sensitivity outweighs automotive compliance and tighter tolerance is not required. |
| MMSZ5245B | 24 V nominal, ±5 % tolerance, SOD-123 package (larger), 500 mW Ptot, no AEC-Q101 rating. | Suitable for higher-power regulation but incompatible with ultra-dense layouts due to 2.8 mm × 1.6 mm footprint. | Choose when thermal margin is critical and board space allows larger package; avoid for AEC-Q101–mandated designs. |
Compared with BZX584-C24 and MMSZ5245B, SZMM5Z24VT5GF uniquely combines automotive qualification, ±2 % tolerance, and ultra-miniature SOD523 packaging-making it the only option for space-constrained, safety-critical 24 V reference applications in modern vehicle ECUs.
Availability
SZMM5Z24VT5GF is available at Aetrix Electronics and suitable for automotive sensor biasing, USB port overvoltage clamping, and industrial PLC input protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SZMM5Z24VT5GF 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 specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
SZMM5Z24VT5GF belongs to the SZMM5Z series of general-purpose Zener diodes designed specifically for compact, thermally robust voltage regulation in automotive and industrial environments where AEC-Q101 compliance and ultra-small form factor are mandatory.
FAQ
What is the maximum continuous forward current rating for SZMM5Z24VT5GF?
The device is not rated for continuous forward conduction; its primary function is reverse-bias Zener operation. Forward voltage is specified at 1.1 V max for IF = 100 mA (pulsed, tp ≤ 300 µs), and absolute maximum forward current is 200 mA per limiting values table-intended only for brief test or fault conditions, not steady-state use.
Can SZMM5Z24VT5GF be used as a replacement for a 24 V Zener in an existing SOD-123 design?
No-SZMM5Z24VT5GF uses the SOD523 (SC-79) package (1.25 mm × 0.85 mm), which is physically incompatible with SOD-123 footprints (2.8 mm × 1.6 mm). Pad layout, solder stencil, and reflow profile must be redesigned; electrical substitution alone is insufficient without mechanical adaptation.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a specified temperature coefficient of +18.4 to +22.0 mV/K, the Zener voltage increases by approximately 3.5 V across that 165 K range. At IZ = 5 mA, this yields a worst-case drift of ±2.9 % relative to 24 V-acceptable for non-precision clamping but requires compensation in high-accuracy reference designs.
Is thermal derating required when mounting on a 1 oz copper PCB without thermal vias?
Yes-Rth(j-a) is 350 K/W in free air, meaning power must be reduced significantly above 25 °C ambient. For example, at 85 °C ambient, maximum allowable Ptot drops to ~170 mW to keep Tj ≤ 150 °C. Use of ≥35 mm² copper at the cathode pad (per datasheet condition) is essential to achieve the rated 300 mW.
SZMM5Z24VT5GF 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):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 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
SZMM5Z24VT5GF FAQ
1.How can I place an order for SZMM5Z24VT5GF through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z24VT5GF 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 SZMM5Z24VT5GF reliable?
The price and inventory of SZMM5Z24VT5GF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z24VT5GF is usually 5 days.
3.What payment methods are accepted for SZMM5Z24VT5GF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z24VT5GF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z24VT5GF?
SZMM5Z24VT5GF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z24VT5GF 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 SZMM5Z24VT5GF?
For technical support, including SZMM5Z24VT5GF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z24VT5GF requirements.
6.How does Aetrix verify that SZMM5Z24VT5GF is sourced from the original manufacturer or authorized distributors?
All SZMM5Z24VT5GF 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 SZMM5Z24VT5GF meets industry standards.
7.What is the process for return or replacement of SZMM5Z24VT5GF?
All SZMM5Z24VT5GF units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z24VT5GF, 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 SZMM5Z24VT5GF part is unused and in its original packaging.
Return procedure for SZMM5Z24VT5GF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZMM5Z24VT5GF Tags
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