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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Zener Diode Arrays

Diodes Incorporated DZ23C27-7

Name: DZ23C27-7
Brand: Diodes Incorporated
SKU: DZ23C27-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DZ23C27-7

Manufacturer:: Diodes Incorporated

Category:: Zener Diode Arrays

Package:: -

Datasheet:: DZ23C27-7.pdf

Description:: DIODE ZENER ARRAY 27V SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:174

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Product details

Overview

DZ23C27-7 from Diodes Incorporated is a dual common-cathode 300mW surface-mount Zener diode with nominal zener voltage 27V (25.1–28.9V range), ±5% matching between diodes, and 80Ω typical zener impedance at 5mA. It operates from −65°C to +150°C and is used for precision voltage reference and overvoltage protection in dual-rail power monitoring circuits.

For engineers reviewing the DZ23C27-7 datasheet, DZ23C27-7 pinout, DZ23C27-7 application, or DZ23C27-7 equivalent, key selection criteria include matched dual-zener tolerance, SOT23 thermal resistance (417°C/W), JEDEC-qualified reliability, and automotive-grade availability via Q-suffix variants.

Technical Context

This dual Zener integrates two independently rated but tightly matched zener elements sharing a common cathode terminal, enabling differential reference generation or redundant clamping in compact space-constrained designs. Its matched ΔV_Z ≤ 5% supports high-accuracy biasing without external trimming.

The device uses alloy 42 lead frame with matte tin plating, meets J-STD-020 Level 1 moisture sensitivity, and achieves 300mW dissipation on FR4 PCB with recommended pad layout-critical for stable regulation under transient load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage	25.1–28.9 V at I_ZT = 5 mA - defines regulated output range for precision reference applications
Power Dissipation	300 mW - maximum continuous DC power handling on standard FR4 board
Zener Impedance	80 Ω typical at 5 mA - determines regulation stiffness and AC ripple rejection
Temperature Coefficient	+0.090 %/°C - enables predictable drift compensation in temperature-varying environments
Reverse Leakage	<0.1 µA at 20 V - ensures minimal quiescent current in standby or low-power modes
Thermal Resistance	417 °C/W junction-to-ambient - sets derating curve slope for ambient temperature operation

Pinout & Package

Package: SOT23 - surface-mount plastic case with UL 94V-0 flammability rating, 0.008 g weight, and lead-free matte tin terminals solderable per MIL-STD-202.

Pin/Terminal	Circuit Role	Design Meaning
Anode 1 (Pin 1)	First Zener Anode	Independent input node for first zener element; reverse-biased to regulate at 27V
Cathode (Pin 2)	Common Cathode	Shared return path for both zeners; connects to system ground or reference rail
Anode 2 (Pin 3)	Second Zener Anode	Independent input node for second zener element; enables matched dual-reference topology

Key Features

Feature	Design Value
Dual Zeners, Common Cathode	Enables differential voltage sensing or redundancy without discrete pairing and layout mismatch
ΔV_Z ≤ 5%	Guarantees tight tracking between two 27V elements-critical for ratiometric measurement systems
JEDEC High-Reliability Qualification	Validated for extended life-cycle use in industrial and automotive control modules
SOT23 Footprint Compatibility	Supports automated pick-and-place assembly and reflow soldering per IPC-J-STD-020

Applications

Industrial Power Monitoring

Automotive ECU Reference

Use Scenario: Dual-rail 24V/27V supply supervision in PLC I/O modules.

IC Role / Device Role / Timing Role: Dual zener provides matched overvoltage threshold detection for primary and backup rails.

Use Value: Eliminates need for two separate discretes and reduces board area by 40% versus discrete SOT23 pair.

Use Scenario: Stable 27V reference for ADC biasing in engine control unit sensor interfaces.

IC Role / Device Role / Timing Role: Common-cathode configuration supplies identical reference potential to dual analog front-ends.

Use Value: Matching ≤5% ensures <±1.35V error across channels-meets AEC-Q100 Grade 1 accuracy requirements.

Medical Sensor Biasing

Telecom Line Protection

Use Scenario: Low-drift bias network for isolated pressure transducer signal conditioning.

IC Role / Device Role / Timing Role: Provides matched, temperature-compensated reference for Wheatstone bridge excitation.

Use Value: +0.090%/°C TC allows predictable calibration offset correction over −40°C to +85°C operating range.

Use Scenario: Dual-stage surge clamp on 24V telecom interface lines.

IC Role / Device Role / Timing Role: First zener clamps fast transients; second absorbs sustained overvoltage events.

Use Value: Shared cathode simplifies PCB routing and improves clamping symmetry during multi-pulse ESD events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C27LT1G	Single 27V Zener in SOT23; no dual-element or matching spec	Requires two devices for dual-rail use; introduces layout-induced mismatch up to 10%	Select when only one regulated rail is needed and board area permits discrete duplication
DZ23C24-7	24V nominal (22.8–25.6V), otherwise identical package, matching, and thermal specs	Lower voltage threshold suitable for 24V system margin testing instead of 27V overvoltage guardband	Choose for legacy 24V industrial systems where tighter 24V regulation is required over 27V headroom

Compared with BZX84-C27LT1G and DZ23C24-7, DZ23C27-7 uniquely delivers matched dual 27V regulation in one SOT23 footprint-reducing component count, improving channel-to-channel tracking, and enabling compact dual-threshold protection schemes not possible with single-Zener alternatives.

Availability

DZ23C27-7 is available at Aetrix Electronics and suitable for industrial power monitoring, automotive ECU reference design, and medical sensor biasing requiring stable component supply and JEDEC-qualified reliability.

Supply support for DZ23C27-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with ISO/TS 16949-certified manufacturing facilities.

DZ23C27-7 belongs to the DZ23C series of dual common-cathode Zener diodes engineered for high-precision voltage referencing and matched-clamp protection in space-constrained industrial and automotive electronics.

FAQ

What is the maximum continuous reverse current the DZ23C27-7 can sustain at 27V?

The DZ23C27-7 is rated for 300mW total power dissipation. At nominal 27V, this corresponds to a maximum continuous reverse current of approximately 11.1 mA (300 mW ÷ 27 V). Derating applies above 25°C ambient per the published power derating curve.

Does DZ23C27-7 support automotive qualification?

Yes-DZ23C27-7 has an automotive-grade variant designated DZ23C27Q-7-F, qualified to AEC-Q101, manufactured in IATF 16949-certified facilities, and PPAP-capable. The commercial version is JEDEC-qualified but not AEC-rated.

How is the common cathode pin electrically isolated between the two zener elements?

The cathode is a single internal metallization shared by both p-n junctions. There is no isolation-the two anodes connect to independent junctions that share the same cathode node, enabling true common-cathode operation with inherent voltage matching.

Can DZ23C27-7 be used in series or parallel configurations with other Zeners?

Parallel connection is not recommended due to mismatched dynamic impedance causing current imbalance. Series use is permissible only if both anodes are driven independently and the cathode remains common; however, datasheet validation covers only standalone dual-zener operation-not cascaded topologies.

DZ23C27-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: *

Package/Case:: -

Packaging:: Cut Tape (CT)

Product Status:: Active

Configuration:: -

Voltage - Zener (Nom) (Vz):: -

Tolerance:: -

Power - Max:: -

Impedance (Max) (Zzt):: -

Current - Reverse Leakage @ Vr:: -

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

DZ23C27-7 FAQ

1.How can I place an order for DZ23C27-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DZ23C27-7 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 DZ23C27-7 reliable?

The price and inventory of DZ23C27-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DZ23C27-7 is usually 5 days.

3.What payment methods are accepted for DZ23C27-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DZ23C27-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DZ23C27-7?

DZ23C27-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DZ23C27-7 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 DZ23C27-7?

For technical support, including DZ23C27-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DZ23C27-7 requirements.

6.How does Aetrix verify that DZ23C27-7 is sourced from the original manufacturer or authorized distributors?

All DZ23C27-7 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 DZ23C27-7 meets industry standards.

7.What is the process for return or replacement of DZ23C27-7?

All DZ23C27-7 units undergo pre-shipment inspection (PSI). If there is an issue with DZ23C27-7, 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 DZ23C27-7 part is unused and in its original packaging.

Return procedure for DZ23C27-7:

1.Submit a request within 90 days.

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

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