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Nexperia USA Inc. PDZ33BGWX
- Part No.:
- PDZ33BGWX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
PDZ33BGWX.pdf
- Description:
- DIODE ZENER 33V 365MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,988
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Product details
Overview
PDZ33BGWX from Nexperia is a single Zener diode in SOD123 package, designed for precision voltage regulation and reference applications at nominal 33 V with ±2 % tolerance (B2 series), 40 W non-repetitive peak reverse power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the PDZ33BGWX datasheet, PDZ33BGWX pinout, PDZ33BGWX application, or PDZ33BGWX equivalent, this device supports stable low-power voltage clamping, overvoltage protection, and biasing in space-constrained SMT designs requiring tight Zener voltage accuracy and thermal reliability.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal working voltage of 33 V at IZ = 5 mA, exhibiting a typical differential resistance of 250 Ω and temperature coefficient of +29.7 mV/K. It maintains stable regulation under transient surges up to 100 μs pulse width.
Thermal performance is defined by Rth(j-a) = 340 K/W (free air) and Rth(j-sp) = 50 K/W (cathode solder point), enabling reliable operation up to Tj = 150 °C. Reverse current is limited to ≤0.05 μA at VR = 25 V (Tj = 25 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 33 V at IZ = 5 mA; defines precise clamping threshold for protection and reference circuits |
| Voltage Tolerance | ±2 % (B2 series); ensures predictable regulation across production batches without post-assembly trimming |
| Non-repetitive Peak Power | 40 W (tp = 100 μs); enables robust transient surge suppression in automotive load-dump scenarios |
| Total Power Dissipation | 365 mW at Tamb ≤ 25 °C; sets continuous DC power limit for thermal design on standard FR4 PCB |
| Differential Resistance | 250 Ω max at IZ = 5 mA; determines regulation stiffness and output impedance in feedback paths |
| Reverse Current | ≤0.05 μA at VR = 25 V; minimizes standby leakage in battery-powered voltage monitor circuits |
| Temperature Coefficient | +29.7 mV/K at IZ = 5 mA; quantifies voltage drift per degree Celsius for stability-critical references |
Pinout & Package
SOD123 surface-mount plastic package (3.75 × 2.55 × 1.3 mm), optimized for automated placement and reflow soldering on FR4 PCBs with standard footprint per Figure 9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct orientation during assembly |
| 2 (A) | Anode | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
| ±2 % Zener voltage tolerance | Reduces need for external trimming components in precision reference designs targeting 33 V regulation |
| Low reverse leakage (≤0.05 μA) | Enables ultra-low-quiescent-current voltage monitoring in always-on automotive subsystems |
| 40 W surge capability | Withstands ISO 7637-2 Pulse 1/2a/5a transients without derating or external TVS stacking |
| SOD123 footprint compatibility | Supports high-density layout with industry-standard 0805-equivalent land pattern and reflow profile |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage reference for ADC input scaling in door module microcontroller. IC Role / Device Role / Timing Role: Zener diode provides stable 33 V reference for internal 12-bit ADC reference divider network. Use Value: ±2 % tolerance ensures <0.5 LSB error across temperature range without calibration. |
Use Scenario: Overvoltage clamp on 24 V industrial analog sensor supply line. IC Role / Device Role / Timing Role: Shunts transient energy above 33 V to protect downstream op-amps and ADC front-end. Use Value: 40 W non-repetitive surge rating absorbs 100 μs spikes without degradation or latch-up. |
| Consumer Power Adapter Feedback | Medical Portable Device Biasing |
|
Use Scenario: Secondary-side voltage sensing in isolated flyback converter feedback loop. IC Role / Device Role / Timing Role: Zener regulates optocoupler LED current to maintain ±3 % output voltage regulation. Use Value: 250 Ω differential resistance ensures minimal load variation impact on regulation accuracy. |
Use Scenario: Low-leakage bias source for photodiode amplifier in battery-powered pulse oximeter. IC Role / Device Role / Timing Role: Provides fixed 33 V bias while contributing <0.05 μA reverse current to total system quiescent draw. Use Value: Enables >100-hour battery life in standby mode without compromising signal-to-noise ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C33 | Same 33 V nominal, ±5 % tolerance, SOT23 package, Ptot = 300 mW, no AEC-Q101 qualification | Limited to commercial-grade consumer electronics; lacks automotive thermal and reliability validation | Select when cost sensitivity outweighs automotive qualification and tighter tolerance requirements |
| MMSZ5259B | 33 V nominal, ±5 % tolerance, SOD123 package, Ptot = 500 mW, no AEC-Q101, higher IR (≤1 μA) | Higher power handling but greater leakage compromises low-power sensor biasing | Prefer where ambient temperature exceeds 105 °C and leakage is not critical |
Compared with BZX84-C33 and MMSZ5259B, PDZ33BGWX delivers tighter ±2 % voltage control, AEC-Q101 compliance, and lower leakage-making it uniquely suitable for automotive and precision industrial voltage reference roles where long-term stability and regulatory validation are mandatory.
Availability
PDZ33BGWX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and medical portable device biasing requiring stable component supply with full traceability and lifecycle management.
Supply support for PDZ33BGWX 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 expert delivering high-performance logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization.
PDZ33BGWX belongs to the PDZ-GW series of AEC-Q101-qualified Zener diodes engineered specifically for automotive and industrial voltage regulation where precision, surge resilience, and SMT manufacturability are essential.
FAQ
What is the maximum continuous reverse current the PDZ33BGWX can sustain at 25 °C?
The PDZ33BGWX has no specified maximum continuous reverse current rating; its operation is defined by power limits. At 33 V Zener voltage, the maximum continuous reverse current is derived from Ptot = 365 mW, yielding IZ ≈ 11 mA (365 mW ÷ 33 V). Exceeding this risks thermal runaway without adequate PCB copper area.
How does the +29.7 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
Over that range, the Zener voltage shifts by approximately +2.9 V (29.7 mV/K × 99 K), resulting in a final value near 35.9 V. This drift is predictable and linear, allowing compensation in closed-loop systems-but makes PDZ33BGWX unsuitable as a standalone precision reference outside narrow temperature bands.
Can PDZ33BGWX replace PDZ33B in existing SOD123 footprints?
Yes-PDZ33BGWX shares identical SOD123 mechanical dimensions, pinout (cathode/anode), and thermal pad layout with PDZ33B. The "X" suffix denotes tape-and-reel packaging per JEDEC J-STD-020; electrical and reliability specs are identical per Rev. 1 datasheet.
Is the 40 W non-repetitive peak power rating valid for multiple pulses separated by seconds?
No-the 40 W rating applies only to single, isolated pulses ≤100 μs duration with Tj = 25 °C prior to surge. For repeated pulses, junction temperature rise must be calculated using Rth(j-a) = 340 K/W; cumulative heating requires derating per Figure 1's PZSM vs. tp curve.
PDZ33BGWX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-GW
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±2.48%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25 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-123
PDZ33BGWX FAQ
1.How can I place an order for PDZ33BGWX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ33BGWX 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 PDZ33BGWX reliable?
The price and inventory of PDZ33BGWX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ33BGWX is usually 5 days.
3.What payment methods are accepted for PDZ33BGWX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ33BGWX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ33BGWX?
PDZ33BGWX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ33BGWX 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 PDZ33BGWX?
For technical support, including PDZ33BGWX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ33BGWX requirements.
6.How does Aetrix verify that PDZ33BGWX is sourced from the original manufacturer or authorized distributors?
All PDZ33BGWX 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 PDZ33BGWX meets industry standards.
7.What is the process for return or replacement of PDZ33BGWX?
All PDZ33BGWX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ33BGWX, 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 PDZ33BGWX part is unused and in its original packaging.
Return procedure for PDZ33BGWX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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