My Inquiry
My Account
Nexperia USA Inc. PDZ27B,115
- Part No.:
- PDZ27B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ27B,115.pdf
- Description:
- DIODE ZENER 27V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:80
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PDZ27B,115 from Nexperia is a single low-power Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 27 V nominal working voltage with ±2 % tolerance, 400 mW total power dissipation, and 0.05 µA reverse current at VR = 21 V. It delivers stable reference voltage in compact power management circuits for consumer and industrial DC-DC feedback loops.
For engineers reviewing the PDZ27B,115 datasheet, PDZ27B,115 pinout, PDZ27B,115 application, or PDZ27B,115 equivalent, key selection criteria include Zener voltage accuracy at IZ = 5 mA, low dynamic impedance (150 Ω max), temperature coefficient (23.4 mV/K), thermal resistance (340 K/W), and SOD323 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across varying load and supply conditions. Its hard breakdown knee and low leakage current (<0.05 µA at 21 V) ensure predictable turn-on behavior and minimal quiescent power loss in biasing and regulation networks.
The device exhibits a positive temperature coefficient of +23.4 mV/K at IZ = 5 mA, enabling predictable drift compensation in temperature-sensitive references. Thermal performance is defined for FR4 PCB mounting with single-sided copper, where junction-to-ambient resistance is 340 K/W and junction-to-solder-point is 130 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 26.19 V to 27.53 V at IZ = 5 mA - defines tight regulation window for 27 V nominal reference |
| Differential Resistance (rdif) | ≤150 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under small current changes |
| Reverse Current (IR) | ≤0.05 µA at VR = 21 V - enables ultra-low standby power in battery-backed circuits |
| Temperature Coefficient (SZ) | +23.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius for thermal design margining |
| Total Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous power handling before derating |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - defines conduction loss when used in forward-biased protection paths |
| Junction Temperature (Tj) | Max +150 °C - constrains maximum operating ambient based on thermal resistance and power |
Pinout & Package
PDZ27B,115 is housed in a surface-mount SOD323 (SC-76) plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode marked by a bar on the top surface. The package supports reflow and wave soldering per standardized footprints (solder land: 0.5 mm × 0.6 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 150 Ω max at 0.5 mA - improves regulation stability under light-load transients |
| Hard breakdown knee | Sharp, non-gradual turn-on at VZ - reduces ambiguity in threshold detection applications |
| Ultra-low leakage current | 0.05 µA max at 21 V - minimizes error current in high-impedance reference dividers |
| ±2 % Zener voltage tolerance | Tight initial accuracy without post-manufacturing trimming - lowers BOM cost in non-critical references |
| SOD323 footprint | 0.65 mm pitch, 1.35 mm body length - enables placement in space-constrained IoT sensor nodes and wearables |
Applications
| Power Supply Feedback Loop | Overvoltage Clamp |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or buck converter secondary-side feedback network. IC Role / Device Role: Provides precise 27 V reference to optocoupler input or TL431 comparator. Use Value: Maintains ±1.5 % output regulation over line/load/temperature with <150 Ω dynamic impedance limiting feedback error. |
Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 27 V. IC Role / Device Role: Shunts excess energy to ground when input voltage exceeds Zener breakdown threshold. Use Value: Clamps within 100 ns with <0.05 µA leakage, preserving signal integrity during normal operation. |
| Voltage Reference for ADC | LED Current Biasing |
|
Use Scenario: Generating stable reference for 12-bit analog-to-digital conversion in industrial sensors. IC Role / Device Role: Supplies low-drift 27 V reference to voltage divider feeding ADC reference input. Use Value: Enables <±0.5 LSB error contribution via +23.4 mV/K TC and 0.05 µA leakage-induced offset. |
Use Scenario: Setting constant current for high-brightness LED strings in signage or backlighting. IC Role / Device Role: Stabilizes voltage across current-setting resistor in linear LED driver topology. Use Value: Delivers ±2 % current accuracy over temperature with hard-knee breakdown preventing current runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C27 | Same 27 V nominal, ±5 % tolerance, 300 mW Ptot, SOD523 package (smaller, 1.2 mm × 0.8 mm) | Higher leakage (1 µA at 21 V) and looser tolerance reduce accuracy in precision references | Select for ultra-compact layout where 27 V ±5 % and higher leakage are acceptable |
| MMSZ5258ET1G | 27 V nominal, ±5 % tolerance, 500 mW Ptot, SOD123 package (larger, 3.7 mm × 1.6 mm) | Higher power rating but 3× larger footprint and 10× higher leakage (0.5 µA) | Select when board space allows and >400 mW dissipation is required in high-current clamping |
Compared with BZX584-C27 and MMSZ5258ET1G, PDZ27B,115 offers tighter ±2 % tolerance, lower 0.05 µA leakage, and optimized SOD323 size-making it preferred for space-constrained, high-accuracy 27 V reference and clamp designs where thermal resistance (340 K/W) and dynamic impedance (150 Ω) are critical.
Availability
PDZ27B,115 is available at Aetrix Electronics and suitable for power supply feedback loops, overvoltage clamping, precision ADC references, and LED biasing requiring stable component supply and consistent parametric performance across production batches.
Supply support for PDZ27B,115 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 headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The PDZ-B series targets general-purpose voltage regulation in space-constrained, cost-sensitive applications-emphasizing tight Zener tolerance, low leakage, and robust SMD packaging for automated assembly.
FAQ
What is the maximum reverse voltage (VR) that PDZ27B,115 can withstand before breakdown?
PDZ27B,115 begins controlled Zener breakdown at a nominal 27 V, with guaranteed minimum VZ of 26.19 V and maximum of 27.53 V at IZ = 5 mA. It is not rated for sustained reverse voltage above its specified VZ range; operation beyond 27.53 V risks thermal runaway unless current is strictly limited by external series resistance.
Can PDZ27B,115 be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the same batch, slight VZ mismatches cause current hogging. PDZ27B,115's +23.4 mV/K coefficient does not guarantee balanced sharing; parallel use risks thermal instability and premature failure without individual ballasting resistors.
How does the SOD323 package affect thermal performance compared to larger packages like SOD123?
The SOD323 package has higher thermal resistance: Rth(j-a) = 340 K/W versus ~200 K/W for SOD123 on identical FR4 PCBs. This limits continuous power handling to 400 mW at 25 °C ambient, requiring earlier derating above 25 °C-critical for enclosed or high-ambient environments where junction temperature must stay ≤150 °C.
Is PDZ27B,115 suitable for automotive applications?
No-PDZ27B,115 is not AEC-Q200 qualified and lacks automotive-grade screening, extended temperature validation, or guaranteed PPAP documentation. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use in automotive systems requires formal qualification and carries full customer liability per manufacturer terms.
PDZ27B,115 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):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21 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
PDZ27B,115 FAQ
1.How can I place an order for PDZ27B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ27B,115 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 PDZ27B,115 reliable?
The price and inventory of PDZ27B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ27B,115 is usually 5 days.
3.What payment methods are accepted for PDZ27B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ27B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ27B,115?
PDZ27B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ27B,115 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 PDZ27B,115?
For technical support, including PDZ27B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ27B,115 requirements.
6.How does Aetrix verify that PDZ27B,115 is sourced from the original manufacturer or authorized distributors?
All PDZ27B,115 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 PDZ27B,115 meets industry standards.
7.What is the process for return or replacement of PDZ27B,115?
All PDZ27B,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDZ27B,115, 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 PDZ27B,115 part is unused and in its original packaging.
Return procedure for PDZ27B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ27B,115 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
