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Nexperia USA Inc. PDZ3.6B-QX
- Part No.:
- PDZ3.6B-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ3.6B-QX.pdf
- Description:
- DIODE ZENER 3.6V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,523
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Product details
Overview
PDZ3.6B-QX from Nexperia is a single silicon Zener diode optimized for low-power voltage regulation in automotive and industrial SMD designs. It delivers a nominal Zener voltage of 3.60 V to 3.85 V at IZ = 5 mA, with ≤90 Ω differential resistance at 1 mA, ±2 % tolerance, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the PDZ3.6B-QX datasheet, PDZ3.6B-QX pinout, PDZ3.6B-QX application, or PDZ3.6B-QX equivalent, this device is selected for precision clamping, reference stabilization, and overvoltage protection where compact size (SOD323), low leakage (<5 µA at VR = 1.0 V), and hard breakdown knee are critical.
Technical Context
This Zener operates in reverse-biased breakdown mode with a temperature coefficient of −2.4 mV/K at IZ = 5 mA, enabling stable regulation across −65 °C to +150 °C junction temperature range. Its 130 K/W junction-to-solder-point thermal resistance supports reliable power dissipation up to 400 mW on FR4 PCBs with standard footprint.
The diode exhibits forward voltage ≤0.9 V at IF = 10 mA and ≤1.1 V at IF = 100 mA, confirming low-conduction-loss behavior in bidirectional protection schemes. Its 390 pF capacitance at 1 MHz and 0 V bias suits low-frequency regulation without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.60 V to 3.85 V at IZ = 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Differential Resistance (rdif) | 500 Ω @ 1 mA - ensures tight regulation under light-load conditions typical in sensor biasing |
| Reverse Current (IR) | ≤5 µA at VR = 1.0 V - minimizes standby power loss in battery-backed circuits |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C - enables operation in compact automotive ECUs without forced cooling |
| Thermal Resistance (Rth(j-sp)) | 130 K/W - allows direct thermal coupling to PCB copper for effective self-heating management |
| Capacitance (Cd) | 390 pF at f = 1 MHz, VR = 0 V - avoids high-frequency noise coupling in analog reference paths |
| Temperature Coefficient (SZ) | −2.4 mV/K at IZ = 5 mA - provides predictable, negative drift for compensation in mixed-signal systems |
Pinout & Package
PDZ3.6B-QX is housed in a SOD323 (SC-76) surface-mount plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode indicated by a marking bar on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; polarity must match PCB silkscreen bar for correct breakdown conduction |
| 2 (A) | Anode | Connected to ground or lower-potential rail; forms current path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114 |
| Hard breakdown knee | Sharp transition from leakage to conduction at VZ, reducing regulation hysteresis in feedback loops |
| Low dynamic impedance at low current | 500 Ω @ 1 mA enables stable reference generation even in microamp-level bias networks |
| Small SOD323 footprint | 0.95 mm height and 1.35 mm width allow placement in space-constrained modules like ADAS sensors |
| ±2 % voltage tolerance | Reduces need for post-assembly trimming in factory calibration of 3.3 V supply monitors |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Stabilizing 3.3 V reference for LIN transceiver biasing in door module ECUs. IC Role / Device Role / Timing Role: Zener clamp maintaining reference accuracy despite battery voltage fluctuations (9–16 V). Use Value: Ensures <1 % reference drift over −40 °C to +125 °C ambient, meeting ISO 16750-2 pulse test requirements. |
Use Scenario: Providing stable bias voltage for RTD-to-digital converter front-end in process control transmitters. IC Role / Device Role / Timing Role: Low-leakage voltage reference source for excitation current generation. Use Value: ≤5 µA reverse current prevents loading error in high-impedance bridge configurations. |
| USB-C Power Delivery Protection | Medical Wearable Battery Monitoring |
|
Use Scenario: Overvoltage clamp on VBUS line during hot-plug events in portable docking stations. IC Role / Device Role / Timing Role: Fast-acting shunt protector limiting transient spikes to ≤4.2 V. Use Value: Hard breakdown knee ensures sub-100 ns response to 1 kV/µs surges per IEC 61000-4-5 Level 3. |
Use Scenario: Regulating reference voltage for ADC monitoring of Li-ion cell voltage in patch-style monitors. IC Role / Device Role / Timing Role: Low-power Zener providing 3.6 V reference with minimal quiescent drain. Use Value: 400 mW Ptot rating supports continuous operation at 30 µA average current, extending battery life >30 days. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V6 | Same VZ range (3.6 V), but SOD323 package with ±5 % tolerance and higher rdif (120 Ω min) | Lacks AEC-Q101 qualification; suitable only for commercial-grade consumer electronics | Select when cost sensitivity outweighs automotive reliability requirements |
| MMSZ4685 | VZ = 3.6 V, ±5 %, SOD123 package (larger footprint), Ptot = 500 mW | Higher power rating but 2× larger board area; not AEC-Q101 qualified | Choose when thermal margin is prioritized over space constraints and automotive compliance |
Compared with BZX384-B3V6 and MMSZ4685, PDZ3.6B-QX offers tighter tolerance, lower leakage, and automotive qualification in the smallest footprint-making it optimal for space- and reliability-critical embedded systems where regulatory compliance is mandatory.
Availability
PDZ3.6B-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C protection circuits, and medical wearable power monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PDZ3.6B-QX 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 focused on essential efficiency-enhancing components, with leadership in logic, discrete, and MOSFET technologies for automotive, industrial, and mobile markets.
PDZ3.6B-QX belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for robust voltage regulation in harsh-environment automotive subsystems and high-reliability industrial controls.
FAQ
What is the maximum reverse current specification for PDZ3.6B-QX at 1.0 V?
The maximum reverse current (IR) is 5 µA at VR = 1.0 V and Tj = 25 °C. This value remains ≤10 µA across the full operating temperature range (−65 °C to +150 °C), ensuring minimal leakage in always-on monitoring circuits.
Can PDZ3.6B-QX be used in parallel for higher power handling?
No-Zener diodes exhibit manufacturing spread in VZ and dynamic resistance, causing current imbalance. Parallel operation risks thermal runaway. For higher power, use a single higher-rated Zener or an active regulator; PDZ3.6B-QX is rated for 400 mW max on FR4 PCB.
Is the SOD323 package compatible with standard reflow profiles?
Yes-Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended peak temperature is 260 °C for ≤30 seconds, with preheat ramp rate ≤3 °C/s. Figure 9 in the datasheet provides exact solder land dimensions for reliable attachment.
How does the −2.4 mV/K temperature coefficient affect circuit design?
This negative coefficient means VZ decreases by 2.4 mV per Kelvin rise in junction temperature. In precision references, it must be compensated-e.g., by pairing with a positive-TC component or using temperature-aware calibration algorithms in microcontroller-based systems.
PDZ3.6B-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-B-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-323
PDZ3.6B-QX FAQ
1.How can I place an order for PDZ3.6B-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ3.6B-QX 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 PDZ3.6B-QX reliable?
The price and inventory of PDZ3.6B-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ3.6B-QX is usually 5 days.
3.What payment methods are accepted for PDZ3.6B-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ3.6B-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ3.6B-QX?
PDZ3.6B-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ3.6B-QX 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 PDZ3.6B-QX?
For technical support, including PDZ3.6B-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ3.6B-QX requirements.
6.How does Aetrix verify that PDZ3.6B-QX is sourced from the original manufacturer or authorized distributors?
All PDZ3.6B-QX 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 PDZ3.6B-QX meets industry standards.
7.What is the process for return or replacement of PDZ3.6B-QX?
All PDZ3.6B-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ3.6B-QX, 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 PDZ3.6B-QX part is unused and in its original packaging.
Return procedure for PDZ3.6B-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ3.6B-QX Tags
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MM5Z5V1ST1G
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