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Nexperia USA Inc. SZMM5Z22VT5GF
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- Part No.:
- SZMM5Z22VT5GF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z22VT5GF.pdf
- Description:
- DIODE ZENER 22V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:27,800
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Product details
Overview
SZMM5Z22VT5GF from Nexperia is a 22 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, with 21.56–22.44 V nominal Zener voltage at IZ = 5 mA, 15.4 Ω differential resistance, and −16.4 to +20.0 mV/K temperature coefficient - used for precision voltage regulation in automotive sensor biasing and low-power supply rail clamping.
For engineers reviewing the SZMM5Z22VT5GF datasheet, SZMM5Z22VT5GF pinout, SZMM5Z22VT5GF application, or SZMM5Z22VT5GF equivalent, this page delivers verified Zener parameters, AEC-Q101 qualification status, thermal resistance values (Rth(j-a) = 350 K/W), cathode/anode terminal mapping, and direct alternatives for automotive-grade voltage reference design.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. It exhibits low differential resistance (15.4 Ω) and tightly controlled voltage tolerance (±2 %), enabling accurate regulation in compact, high-density PCB layouts.
Qualified per AEC-Q101, it supports junction temperatures up to 150 °C and ambient ranges from −55 °C to +150 °C. Its SC-79 package provides minimal footprint (1.25 × 0.85 mm) and low thermal resistance to solder point (Rth(j-sp) = 65 K/W), critical for thermally constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.56–22.44 V at IZ = 5 mA - defines precise regulation point for 22 V rail stabilization |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-production trimming |
| Differential Resistance (rdiff) | 15.4 Ω - minimizes output voltage shift under load current variation |
| Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - sets maximum continuous DC power handling on FR4 PCB |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - enables transient overvoltage suppression |
| Thermal Resistance (Rth(j-a)) | 350 K/W - determines junction-to-ambient temperature rise under steady-state operation |
| Temperature Coefficient (SZ) | −16.4 to +20.0 mV/K - quantifies VZ drift vs. junction temperature for thermal design margining |
Pinout & Package
The SZMM5Z22VT5GF uses a 2-terminal SOD523 (SC-79) surface-mount plastic package measuring 1.25 × 0.85 × 0.65 mm, with cathode identified by a marking bar on the device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Ultra-small SOD523 package | Enables placement in space-constrained locations such as camera modules and radar transceivers |
| Low differential resistance | 15.4 Ω ensures <15 mV output deviation across 1 mA load change - critical for analog sensor references |
| ±2 % voltage tolerance | Eliminates need for external calibration in factory-set 22 V bias networks |
| High surge capability | 40 W non-repetitive peak power withstands ESD and load-dump transients in 12 V vehicle systems |
Applications
| Automotive Sensor Biasing | Low-Power Supply Rail Clamping |
|---|---|
|
Use Scenario: Providing stable 22 V reference to MEMS pressure sensor front-end amplifiers in engine manifolds. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, maintaining constant bias voltage despite battery voltage fluctuations (9–16 V). Use Value: Enables <±0.5 % sensor gain stability over −40 to +125 °C ambient, meeting ISO 16750-2 requirements. |
Use Scenario: Clamping auxiliary 22 V rail in infotainment head unit power distribution network. IC Role / Device Role / Timing Role: Shunt regulator absorbs transient energy during load dump events, preventing downstream LDO overvoltage. Use Value: Withstands 40 W surges for 100 µs without degradation, reducing need for additional TVS devices. |
| Industrial Current Loop Interface | Portable Medical Device Reference |
|
Use Scenario: Generating 22 V compliance voltage for 4–20 mA transmitter loop-powered sensors in process automation. IC Role / Device Role / Timing Role: Zener establishes fixed headroom above loop supply, enabling linear operation of op-amp current sources. Use Value: ±2 % tolerance ensures loop accuracy remains within 0.1 % full-scale error budget across temperature. |
Use Scenario: Supplying precision bias to photodiode amplifier in handheld pulse oximeter analog front-end. IC Role / Device Role / Timing Role: Provides low-noise, low-drift voltage reference for transimpedance amplifier feedback network. Use Value: 15.4 Ω rdiff limits reference voltage ripple to <30 µV RMS under 100 µA dynamic load, preserving SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C22LT1G | Same 22 V ±2 % rating, but SOD-323 package (1.7 × 1.3 mm); Rth(j-a) = 450 K/W | Larger footprint and higher thermal resistance limit use in ultra-thin modules | Select when board layout allows larger pad area and thermal performance margin is available |
| MMSZ5248B-TP | 22 V ±5 % tolerance; SOD-123 package; Ptot = 500 mW; not AEC-Q101 qualified | Loose tolerance increases system calibration burden; lacks automotive qualification | Acceptable only for cost-sensitive industrial prototypes without automotive compliance needs |
Compared with BZX584C22LT1G and MMSZ5248B-TP, SZMM5Z22VT5GF offers superior thermal performance in minimal area and guaranteed automotive qualification - making it optimal for production-grade automotive and space-constrained medical designs requiring ±2 % accuracy.
Availability
SZMM5Z22VT5GF is available at Aetrix Electronics and suitable for automotive sensor biasing, low-power supply rail clamping, industrial current loop interfaces, and portable medical device references requiring stable component supply with AEC-Q101 assurance.
Supply support for SZMM5Z22VT5GF 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 reliability.
SZMM5Z22VT5GF belongs to the SZMM5Z series of general-purpose Zener diodes designed specifically for space-constrained, high-reliability voltage regulation in automotive and industrial environments.
FAQ
What is the maximum continuous forward current for SZMM5Z22VT5GF?
The device is not intended for continuous forward conduction. Its absolute maximum forward current is 200 mA under pulsed conditions (tp ≤ 300 µs), but typical forward voltage is 1.1 V at 100 mA. Forward operation is limited to brief test or surge scenarios - sustained forward bias risks thermal runaway and permanent damage.
Can SZMM5Z22VT5GF replace a 24 V Zener in an existing design?
No - its nominal Zener voltage is 22 V (21.56–22.44 V range), not 24 V. Substituting it for a 24 V part would reduce regulation voltage by ~2 V, potentially causing undervoltage faults in downstream circuitry. Use SZMM5Z24VT5G for 24 V applications.
How does the marking code 'ED' identify this device?
'ED' is the top-side laser marking for SZMM5Z22VT5GF per Nexperia's standard coding table. It appears adjacent to the cathode band on the SOD523 package and uniquely identifies the 22 V variant within the SZMM5Z series - enabling visual verification during assembly and rework.
Is thermal derating required above 25 °C ambient?
Yes - total power dissipation must be linearly reduced above 25 °C using the thermal resistance Rth(j-a) = 350 K/W. For example, at 85 °C ambient, maximum allowable Ptot drops to 129 mW ((150 °C − 85 °C) / 350 K/W), ensuring junction temperature stays within 150 °C limit.
SZMM5Z22VT5GF 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):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 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
SZMM5Z22VT5GF FAQ
1.How can I place an order for SZMM5Z22VT5GF through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z22VT5GF 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 SZMM5Z22VT5GF reliable?
The price and inventory of SZMM5Z22VT5GF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z22VT5GF is usually 5 days.
3.What payment methods are accepted for SZMM5Z22VT5GF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z22VT5GF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z22VT5GF?
SZMM5Z22VT5GF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z22VT5GF 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 SZMM5Z22VT5GF?
For technical support, including SZMM5Z22VT5GF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z22VT5GF requirements.
6.How does Aetrix verify that SZMM5Z22VT5GF is sourced from the original manufacturer or authorized distributors?
All SZMM5Z22VT5GF 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 SZMM5Z22VT5GF meets industry standards.
7.What is the process for return or replacement of SZMM5Z22VT5GF?
All SZMM5Z22VT5GF units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z22VT5GF, 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 SZMM5Z22VT5GF part is unused and in its original packaging.
Return procedure for SZMM5Z22VT5GF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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