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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. PDZ2.7B,135

Name: PDZ2.7B,135
Brand: Nexperia USA Inc.
SKU: PDZ2.7B,135
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDZ2.7B,135

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: PDZ2.7B,135.pdf

Description:: DIODE ZENER 2.7V 400MW SOD323

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Inventory:9,970

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Product details

Overview

PDZ2.7B,135 from Nexperia is a single low-power Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 2.7 V nominal working voltage with ±2 % tolerance, 20 Ω typical differential resistance at I_Z = 5 mA, and ≤400 mW total power dissipation. It delivers stable reference voltage in compact space-constrained consumer and industrial power-supply circuits.

For engineers reviewing the PDZ2.7B,135 datasheet, PDZ2.7B,135 pinout, PDZ2.7B,135 application, or PDZ2.7B,135 equivalent, this device is selected for low-current (<5 mA) voltage clamping, biasing, and overvoltage protection where tight voltage tolerance, hard breakdown knee, and minimal leakage (≤100 µA at 2.0 V) are critical.

Technical Context

This Zener diode operates in reverse-biased breakdown mode with a nominal Zener voltage of 2.69–2.91 V at I_Z = 5 mA, exhibiting a negative temperature coefficient of −2.0 mV/K. Its hard breakdown knee ensures predictable turn-on behavior under low-current conditions.

Thermal performance is defined by R_th(j-sp) = 130 K/W (junction-to-solder point) and R_th(j-a) = 340 K/W (junction-to-ambient) on FR4 PCB with standard footprint, supporting reliable operation up to T_j = +150 °C and T_stg = −65 to +150 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.69–2.91 V at I_Z = 5 mA - defines precise clamping threshold for 2.7 V reference applications
Differential Resistance (r_dif)	100 Ω max at I_Z = 5 mA - ensures low voltage deviation under load current variation
Reverse Leakage (I_R)	≤100 µA at V_R = 2.0 V - minimizes standby power loss in battery-powered circuits
Total Power Dissipation (P_tot)	400 mW at T_amb ≤ 25 °C - sets maximum continuous power handling on standard FR4 PCB
Forward Voltage (V_F)	≤0.9 V at I_F = 10 mA - enables use as low-drop rectifier or polarity indicator in dual-role designs
Thermal Resistance (R_th(j-sp))	130 K/W - determines solder-point temperature rise per watt, critical for thermal layout validation

Pinout & Package

PDZ2.7B,135 uses the SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.35 mm body, 0.45 mm height, cathode marked by a bar on the top surface.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes Zener conduction
2	Anode (A)	Connected to ground or lower-potential rail; current flows from cathode to anode during regulation

Key Features

Feature	Design Value
Hard breakdown knee	Enables sharp, repeatable turn-on at low currents (≥0.5 mA), improving stability in low-power bias networks
±2 % Zener voltage tolerance	Reduces need for post-production trimming in precision reference circuits targeting 2.7 V
Low dynamic impedance (100 Ω typ.)	Maintains <±10 mV output shift across 1–5 mA load changes, suitable for analog sensor biasing
SOD323 footprint compatibility	Supports high-density PCB layouts with industry-standard reflow/wave soldering profiles per Fig. 9–10

Applications

USB Port Overvoltage Clamp

Microcontroller Reset Circuit

Use Scenario: Protects 3.3 V USB data lines from transient surges exceeding 2.7 V.

IC Role / Device Role / Timing Role: Zener clamp placed between D+ line and ground, conducting above 2.91 V to shunt excess energy.

Use Value: Leverages 2.69–2.91 V regulation window and ≤100 µA leakage to avoid signal loading while clamping fast transients.

Use Scenario: Generates clean reset signal for ARM Cortex-M0+ MCU during power-up sequencing.

IC Role / Device Role / Timing Role: Provides stable 2.7 V reference to RC network feeding reset supervisor IC input.

Use Value: Uses ±2 % tolerance and hard knee to ensure reset assertion remains within 2.6–2.8 V window across temperature.

Low-Power Sensor Biasing

LED Current Limiter Reference

Use Scenario: Supplies bias voltage to MEMS accelerometer analog front-end operating from 3.0 V supply.

IC Role / Device Role / Timing Role: Zener referenced against 3.0 V rail to generate 2.7 V bias for internal op-amp rails.

Use Value: Achieves <1 mV drift over −40 to +85 °C using −2.0 mV/K tempco matched to system compensation.

Use Scenario: Sets reference voltage for constant-current LED driver IC in portable lighting module.

IC Role / Device Role / Timing Role: Connected in series with driver feedback pin to define 2.7 V threshold for current regulation loop.

Use Value: Delivers 100 Ω dynamic impedance to minimize current error (<±1.5%) across 10–100 mA LED loads.

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 % tolerance, but SOD323 package with higher r_dif (120 Ω max) and higher I_R (200 µA at 2.0 V)	Less suitable for ultra-low-leakage bias networks; acceptable for general-purpose clamping	Select when cost sensitivity outweighs leakage or impedance requirements
MMSZ4678T1G	2.7 V nominal, ±5 % tolerance, SOD123 package (larger footprint), r_dif = 150 Ω max, I_R = 100 µA	Requires PCB redesign due to different package; looser tolerance increases calibration burden	Choose only if SOD123 is already standardized in production and ±5 % is acceptable

Compared with BZX384-B2V7 and MMSZ4678T1G, PDZ2.7B,135 offers superior low-current regulation fidelity (100 Ω r_dif, −2.0 mV/K tempco) and tighter tolerance in the smallest standard Zener footprint, making it optimal for space- and precision-critical designs.

Availability

PDZ2.7B,135 is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset generation, low-power sensor biasing, and LED current reference applications requiring stable component supply and consistent parametric performance across production lots.

Supply support for PDZ2.7B,135 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 logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for consumer, industrial, and communications markets.

PDZ2.7B,135 belongs to the PDZ-B series of low-power Zener diodes engineered for precision voltage regulation in space-constrained, low-current applications-emphasizing tight tolerance, hard breakdown, and robust thermal behavior in ultra-small SMD packages.

FAQ

What is the maximum continuous reverse current (I_Z) for stable regulation?

PDZ2.7B,135 is characterized at I_Z = 5 mA for nominal V_Z specification, with stable regulation maintained up to 20 mA. At 20 mA, V_Z rises by ≤0.15 V versus 5 mA value, and power dissipation remains within derated limits on FR4 PCB. Operation beyond 20 mA requires thermal verification per Fig. 1 derating curve.

Can PDZ2.7B,135 be used in forward-bias mode as a regular diode?

Yes-its forward voltage is ≤0.9 V at 10 mA and ≤1.1 V at 100 mA, matching typical silicon diode behavior. However, its primary design intent and characterization are for reverse-bias Zener operation; forward conduction is specified only for polarity identification and secondary circuit functions-not as a dedicated rectifier.

How does the −2.0 mV/K temperature coefficient affect accuracy over −40 °C to +85 °C?

Over this range, V_Z shifts by approximately −0.25 V (−2.0 mV/K × 125 K), resulting in a final V_Z of ~2.44–2.66 V. This is fully documented in Fig. 3 and must be accounted for in precision references; systems requiring <±10 mV drift need external compensation or tighter-tempco alternatives.

Is PDZ2.7B,135 automotive-qualified?

No-this device is not qualified to AEC-Q101 or any automotive standard. Nexperia explicitly states in Section 14 that non-automotive qualified products like PDZ2.7B,135 are unsuitable for safety-critical or life-support systems, and inclusion in automotive applications is at the customer's sole risk without warranty coverage.

PDZ2.7B,135 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: PDZ-B

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:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

PDZ2.7B,135 FAQ

1.How can I place an order for PDZ2.7B,135 through Aetrix?

Please submit a Request for Quotation (RFQ) for PDZ2.7B,135 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,135 reliable?

The price and inventory of PDZ2.7B,135 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,135 is usually 5 days.

3.What payment methods are accepted for PDZ2.7B,135?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ2.7B,135 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDZ2.7B,135?

PDZ2.7B,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDZ2.7B,135 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,135?

For technical support, including PDZ2.7B,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ2.7B,135 requirements.

6.How does Aetrix verify that PDZ2.7B,135 is sourced from the original manufacturer or authorized distributors?

All PDZ2.7B,135 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,135 meets industry standards.

7.What is the process for return or replacement of PDZ2.7B,135?

All PDZ2.7B,135 units undergo pre-shipment inspection (PSI). If there is an issue with PDZ2.7B,135, 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,135 part is unused and in its original packaging.

Return procedure for PDZ2.7B,135:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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