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Nexperia USA Inc. PDZ2.7B-QX
- Part No.:
- PDZ2.7B-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ2.7B-QX.pdf
- Description:
- DIODE ZENER 2.7V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,294
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Product details
Overview
PDZ2.7B-QX from Nexperia is a single Zener diode designed for low-power voltage regulation in compact SMD applications, with a nominal Zener voltage of 2.7 V (2.69–2.91 V at IZ = 5 mA), ±2 % tolerance, 400 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the PDZ2.7B-QX datasheet, PDZ2.7B-QX pinout, PDZ2.7B-QX application, or PDZ2.7B-QX equivalent, this device serves as a precision shunt regulator in power supply feedback loops, overvoltage clamping circuits, and reference voltage generation where space-constrained SOD323 packaging and stable low-voltage regulation are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable reference voltage across its cathode-anode terminals under controlled current conditions. Its hard breakdown knee and low dynamic impedance (100 Ω max at IZ = 5 mA) ensure tight regulation even at low bias currents (0.5–5 mA).
With a negative temperature coefficient of −2.0 mV/K at IZ = 5 mA and thermal resistance Rth(j-a) = 340 K/W on FR4 PCB, it delivers predictable voltage drift and thermal behavior suitable for ambient-temperature-stable references in automotive ECUs and sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.69–2.91 V at IZ = 5 mA - defines precise clamping threshold for 2.7 V nominal regulation |
| Tolerance | ±2 % - enables accurate voltage referencing without post-production trimming |
| Dynamic Resistance rdif | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Current IR | ≤20 µA at VR = 1.0 V - guarantees low leakage in standby or high-impedance bias networks |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - supports continuous operation in thermally constrained layouts |
| Thermal Resistance Rth(j-a) | 340 K/W on FR4 PCB - informs derating requirements above 25 °C ambient |
| Temperature Coefficient SZ | −2.0 mV/K at IZ = 5 mA - quantifies voltage drift per degree for stability analysis |
Pinout & Package
PDZ2.7B-QX is housed in a SOD323 (SC-76) surface-mount plastic package measuring 1.8 × 1.35 × 0.95 mm, with a cathode-marking bar on the top surface. The package is optimized for reflow soldering using standard footprint dimensions (0.6 mm pad width, 0.5 mm spacing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Hard breakdown knee | Sharp, well-defined Zener transition enables stable regulation at low currents (≥0.5 mA) |
| Low leakage current | ≤20 µA at 1.0 V reverse bias - preserves battery life in always-on monitoring circuits |
| Small SOD323 footprint | 1.8 × 1.35 mm outline - fits dense PCB layouts in ADAS sensors and body control modules |
| Wide operating junction temperature | −65 °C to +150 °C - supports under-hood and engine compartment deployment |
Applications
| Automotive Sensor Reference | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 2.7 V reference for analog front-end circuitry in tire pressure monitoring systems (TPMS). IC Role / Device Role / Timing Role: Shunt voltage reference for ADC biasing and signal conditioning amplifier offset setting. Use Value: Tight ±2 % tolerance and −2.0 mV/K TC enable <±10 mV total drift over −40 °C to +125 °C, meeting ASIL-B functional safety margin. |
Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events in infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance (440 pF) shunt protector limiting voltage to ≤2.91 V before downstream LDO input. Use Value: 8.0 A non-repetitive peak surge rating and fast response protect USB PHY without adding signal integrity risk. |
| Industrial PLC Input Protection | Low-Power IoT Voltage Monitor |
Use Scenario: Protecting 24 V DC digital input channels against induced transients in factory automation controllers. IC Role / Device Role / Timing Role: Zener clamp placed between input optocoupler LED anode and common rail to limit forward voltage excursion. Use Value: 400 mW power rating sustains repeated 100 µs surges while maintaining <1.1 V forward drop at 100 mA for LED drive integrity. |
Use Scenario: Generating a precise wake-up threshold for ultra-low-power microcontrollers in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Biasing comparator input with 2.7 V reference derived from high-impedance voltage divider. Use Value: 20 µA max reverse leakage at 1.0 V ensures <100 nA total quiescent current draw in sleep mode, extending 10-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V7 | Same 2.7 V nominal, ±2 %, SOD323, but higher rdif (120 Ω max) and no AEC-Q101 qualification | Not rated for automotive; limited to industrial/commercial grade environments | Select when AEC-Q101 compliance is unnecessary and cost sensitivity outweighs leakage/TC performance |
| MMSZ4678T1G | 2.7 V nominal, ±5 % tolerance, SOD123 package (larger), rdif = 100 Ω, no AEC-Q101 | Requires 30 % more board area; looser tolerance increases calibration burden in precision references | Choose only if SOD123 is already standardized in legacy designs and ±5 % regulation error is acceptable |
Compared with BZX384-B2V7 and MMSZ4678T1G, PDZ2.7B-QX offers tighter tolerance, lower leakage, and automotive qualification-making it the sole choice for safety-critical 2.7 V references where long-term stability and regulatory compliance are mandatory.
Availability
PDZ2.7B-QX is available at Aetrix Electronics and suitable for automotive sensor modules, USB interface protection circuits, industrial PLC input stages, and ultra-low-power IoT voltage monitors requiring stable component supply and full traceability.
Supply support for PDZ2.7B-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
PDZ2.7B-QX belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for precision voltage regulation in harsh-environment automotive electronics and space-constrained industrial controls.
FAQ
What is the maximum reverse current at 1.0 V for PDZ2.7B-QX?
The maximum reverse current (IR) is 20 µA at VR = 1.0 V and Tj = 25 °C, as specified in Table 8 of the Nexperia datasheet. This low leakage supports energy-sensitive applications like battery-backed monitoring circuits where standby current must remain below 100 nA.
Can PDZ2.7B-QX be used in parallel for higher power handling?
No-Zener diodes exhibit manufacturing variations in breakdown voltage that cause current imbalance when paralleled. Even with matched units, thermal runaway can occur due to positive temperature coefficient of dynamic resistance above ~5 V; PDZ2.7B-QX's −2.0 mV/K coefficient does not eliminate mismatch-induced instability.
Is the SOD323 package compatible with standard reflow profiles?
Yes-Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended footprint (Fig. 9) uses 0.6 mm wide solder lands with 0.5 mm pitch, and the device withstands peak temperatures up to 260 °C for ≤30 seconds, matching standard lead-free assembly processes.
Does PDZ2.7B-QX require external series resistance in typical regulation circuits?
Yes-a current-limiting resistor is mandatory to set IZ within 0.5–5 mA for stable regulation. For example, with 5 V supply and 2.7 V output, a 470 Ω resistor delivers ~4.9 mA, keeping power dissipation below 13 mW and ensuring operation within the low-rdif region per datasheet Figure 5.
PDZ2.7B-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):
- 2.7 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 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
PDZ2.7B-QX FAQ
1.How can I place an order for PDZ2.7B-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ2.7B-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 PDZ2.7B-QX reliable?
The price and inventory of PDZ2.7B-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ2.7B-QX is usually 5 days.
3.What payment methods are accepted for PDZ2.7B-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ2.7B-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ2.7B-QX?
PDZ2.7B-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ2.7B-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 PDZ2.7B-QX?
For technical support, including PDZ2.7B-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ2.7B-QX requirements.
6.How does Aetrix verify that PDZ2.7B-QX is sourced from the original manufacturer or authorized distributors?
All PDZ2.7B-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 PDZ2.7B-QX meets industry standards.
7.What is the process for return or replacement of PDZ2.7B-QX?
All PDZ2.7B-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ2.7B-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 PDZ2.7B-QX part is unused and in its original packaging.
Return procedure for PDZ2.7B-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ2.7B-QX Tags
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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