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Diodes Incorporated AZ23C27-7
- Part No.:
- AZ23C27-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ23C27-7.pdf
- Description:
- DIODE ZENER ARRAY 27V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,540
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Product details
Overview
AZ23C27-7 from Diodes Incorporated is a dual common-anode 27V Zener diode pair in SOT23 package, rated for 300mW total power dissipation, with ±5% matching between zener voltages (25.1–28.9V at 5mA), 80Ω typical zener impedance, and +0.09%/°C temperature coefficient - used for precision voltage reference and overvoltage clamping in DC power rail supervision circuits.
For engineers reviewing the AZ23C27-7 datasheet, AZ23C27-7 pinout, AZ23C27-7 application, or AZ23C27-7 equivalent, key selection criteria include matched dual-zener tolerance, thermal resistance (417°C/W), JEDEC-qualified reliability, automotive-grade availability (Q-suffix), and SOT23 footprint compatibility with automated PCB assembly.
Technical Context
This dual Zener operates in reverse breakdown mode with two anodes tied internally and separate cathodes, enabling independent voltage regulation or differential clamping. Each diode is characterized at IZT = 5.0mA with guaranteed VZ range of 25.1–28.9V and max ZZK = 250Ω at IZK = 1.0mA.
Thermal derating follows a linear curve from 300mW at TA = 25°C to zero at 150°C, with junction-to-ambient RθJA = 417°C/W on FR-4 board using recommended pad layout. It meets AEC-Q101 (HBM 8kV, MM 400V) and IEC 61000-4-2 (air 15kV, contact 8kV) ESD requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 25.1–28.9V at 5mA - defines tight regulation window for 27V nominal rail protection |
| Power Dissipation | 300mW total - limits continuous clamp current to ~11mA at 27V without heatsinking |
| Zener Impedance | 80Ω typical at 5mA - ensures <±0.2V output shift under ±1.6mA load variation |
| Temperature Coefficient | +0.09%/°C - adds ~±0.24V drift over –40°C to +85°C operating range |
| Reverse Leakage | <0.1µA at 20V - guarantees minimal quiescent current in high-impedance sensing nodes |
| Package | SOT23 - enables 0.9mm × 2.9mm footprint for space-constrained voltage monitor ICs |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated Alloy 42 leadframe, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Common anode connection shared with Pin 3 - ties both Zeners to ground or low-side reference |
| Pin 2 | Cathode 1 | First Zener cathode - connects to 27V rail for clamping or reference output |
| Pin 3 | Anode 2 | Second anode - electrically tied to Pin 1; enables dual-channel configuration |
| Pin 4 | Cathode 2 | Second Zener cathode - supports redundant reference or differential sensing topology |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener Matching | ΔVZ ≤ 5% between channels - enables accurate differential voltage monitoring without calibration |
| Automated Assembly Compatibility | SOT23 footprint with J-STD-020 Level 1 moisture rating - supports high-yield reflow without baking |
| High-Reliability Qualification | AEC-Q101 qualified, JEDEC-compliant - suitable for automotive body electronics and industrial control modules |
| Green Process Compliance | Halogen-free, antimony-free, RoHS 3 compliant - meets IPC-1752A material declaration requirements |
Applications
| Industrial Power Supply Monitoring | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Real-time 24V battery rail supervision in programmable logic controllers with dual-threshold fault detection. IC Role / Device Role / Timing Role: Dual Zener provides independent upper/lower clamp thresholds for brown-out and overvoltage alarms. Use Value: Matched 5% VZ tolerance eliminates need for external trimming resistors in comparator input networks. |
Use Scenario: Voltage reference for LIN transceiver biasing and microcontroller reset circuitry in door module ECUs. IC Role / Device Role / Timing Role: Supplies stable 27V reference to enable accurate internal LDO regulation and watchdog timer thresholds. Use Value: AEC-Q101 qualification ensures operation across –40°C to +125°C ambient with no parametric shift. |
| Medical Infusion Pump Safety Circuit | Telecom Remote Radio Unit (RRU) |
|
Use Scenario: Redundant overvoltage protection on isolated 24V DC-DC converter outputs powering motor drivers. IC Role / Device Role / Timing Role: Dual cathodes feed separate optocoupler inputs for independent fault reporting paths. Use Value: Common-anode architecture allows single ground return while maintaining channel isolation for safety compliance. |
Use Scenario: Bias voltage stabilization for GaN FET gate drivers in outdoor macrocell base station power stages. IC Role / Device Role / Timing Role: Clamps transient spikes on 28V auxiliary supply to protect driver ICs during RF burst switching. Use Value: 300mW rating sustains 10ms surge events up to 2.7A without thermal runaway per JEDEC test conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27LT1G | Single 27V Zener in SOT23; no dual-anode matching; 350mW rating; higher ZZT (100Ω) | Lacks channel-to-channel matching; requires two devices for dual-threshold designs | Select when only one reference voltage is needed and higher power margin is critical |
| DZ23C27-7-F | Common-cathode dual Zener (vs. AZ23's common-anode); identical VZ range and power rating | Inverts PCB routing logic - cathodes tied instead of anodes; requires schematic revision | Choose for legacy designs already using DZ23 footprint or where cathode-common topology simplifies grounding |
Compared with BZX84-C27LT1G and DZ23C27-7-F, AZ23C27-7 uniquely delivers matched dual-anode Zeners in one SOT23 device, reducing component count by 50% in differential monitoring circuits while maintaining AEC-Q101 compliance and 417°C/W thermal performance.
Availability
AZ23C27-7 is available at Aetrix Electronics and suitable for industrial power supply monitoring, automotive body control modules, and medical infusion pump safety circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AZ23C27-7 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, specializing in high-reliability components for automotive, industrial, and computing markets.
AZ23C27-7 belongs to the AZ23 series of dual Zener diodes designed specifically for precision voltage reference and overvoltage protection in space-constrained, high-volume surface-mount applications.
FAQ
What is the maximum continuous Zener current for AZ23C27-7 at 25°C ambient?
At TA = 25°C, the 300mW power rating limits continuous Zener current to approximately 11.1mA (300mW ÷ 27V). Derating begins linearly above 25°C per the published curve, reaching zero dissipation at 150°C ambient.
Can AZ23C27-7 be used in place of a single 27V Zener diode?
Yes - either cathode (Pin 2 or Pin 4) can be used independently with the common anode (Pins 1 & 3) grounded, delivering full 27V regulation capability. The unused cathode remains open and does not affect performance.
Is there a qualified automotive version of AZ23C27-7?
Yes - the automotive-grade variant is AZ23C27Q-7-F, qualified to AEC-Q101, manufactured in IATF 16949 certified facilities, and supported with PPAP documentation for automotive applications.
How does the +0.09%/°C temperature coefficient impact accuracy over temperature?
Over a –40°C to +85°C range (125°C ΔT), the coefficient introduces ±11.25mV/°C × 125°C = ±1.41V total drift from nominal 27V, resulting in a worst-case VZ span of 25.59V to 28.41V - within the specified 25.1–28.9V limit.
AZ23C27-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AZ23C27-7 FAQ
1.How can I place an order for AZ23C27-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ23C27-7 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 AZ23C27-7 reliable?
The price and inventory of AZ23C27-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ23C27-7 is usually 5 days.
3.What payment methods are accepted for AZ23C27-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ23C27-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ23C27-7?
AZ23C27-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ23C27-7 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 AZ23C27-7?
For technical support, including AZ23C27-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ23C27-7 requirements.
6.How does Aetrix verify that AZ23C27-7 is sourced from the original manufacturer or authorized distributors?
All AZ23C27-7 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 AZ23C27-7 meets industry standards.
7.What is the process for return or replacement of AZ23C27-7?
All AZ23C27-7 units undergo pre-shipment inspection (PSI). If there is an issue with AZ23C27-7, 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 AZ23C27-7 part is unused and in its original packaging.
Return procedure for AZ23C27-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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