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Diodes Incorporated BZX84C27Q-13-F
- Part No.:
- BZX84C27Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C27Q-13-F.pdf
- Description:
- DIODE ZENER 27V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,067
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Product details
Overview
BZX84C27Q-13-F from Diodes Incorporated is a 27 V, ±5% tolerance, 350 mW surface-mount Zener diode in SOT23 package, optimized for voltage regulation and reference applications at 2 mA test current, with 80 Ω dynamic impedance at 2 mA and 0.1 µA maximum reverse leakage at 21.4 V, used in power supply feedback loops and precision analog references.
For engineers reviewing the BZX84C27Q-13-F datasheet, BZX84C27Q-13-F pinout, BZX84C27Q-13-F application, or BZX84C27Q-13-F equivalent, key selection criteria include nominal Zener voltage (27 V), tolerance (±5%), power rating (350 mW), Zener impedance (80 Ω @ 2 mA), and automotive-grade qualification (AEC-Q101).
Technical Context
This device operates as a two-terminal voltage reference diode with sharp reverse breakdown at 27 V under 2 mA test current, exhibiting a negative temperature coefficient of −3.5 mV/°C and total capacitance of ~10 pF at 1 V reverse bias. Its planar die construction ensures stable long-term Zener voltage drift.
The SOT23 package enables high-density PCB layouts and compatibility with reflow soldering profiles per J-STD-020 Level 1 moisture sensitivity. Thermal resistance junction-to-ambient is 357 °C/W under free-air conditions with terminals held at ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V nominal, 25.1–28.9 V range at 2 mA - defines precise regulation point for feedback networks |
| Power Dissipation | 350 mW - supports continuous operation in low-power regulation without forced cooling |
| Zener Impedance (ZZT) | 80 Ω at 2 mA - determines output voltage stability under load transients |
| Reverse Leakage (IR) | 0.1 µA max at 21.4 V - ensures minimal quiescent current in high-impedance reference paths |
| Temperature Coefficient | −3.5 mV/°C - enables predictable drift compensation in temperature-sensitive circuits |
| Package | SOT23 - 3-pin surface-mount footprint compatible with automated pick-and-place and reflow |
| AEC-Q101 Qualified | Yes - validated for automotive electronics requiring high reliability and extended temperature operation |
Pinout & Package
Package: SOT23 - 3-terminal plastic molded case, 2.4 mm × 1.3 mm × 1.0 mm body, matte tin-plated alloy 42 leadframe, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower potential side in reverse-biased Zener configuration |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated output node; carries reverse current during regulation |
| No Connection (Pin 3) | Internal die attach pad | Electrically isolated; serves mechanical support only - must not be connected |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight Zener voltage tolerance (±5%) and low long-term drift in production lots |
| AEC-Q101 qualification | Validated for automotive under-hood and infotainment systems operating from −40°C to +150°C |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets RoHS 3 and automotive environmental requirements |
| Lead-free plating | Matte tin over alloy 42 - ensures reliable solderability per MIL-STD-202, Method 208 |
| Moisture sensitivity Level 1 | No baking required before assembly - reduces manufacturing overhead and floor life constraints |
Applications
| Switch-Mode Power Supply Feedback | Automotive ECU Reference Voltage |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Zener diode provides stable 27 V reference to TL431 shunt regulator input. Use Value: Maintains ±1% output regulation across line/load/temperature with minimal component count. |
Use Scenario: Generating stable bias voltage for sensor signal conditioning in engine control units. IC Role / Device Role / Timing Role: Supplies reference to analog front-end ADC driver circuitry under wide ambient temperature swings. Use Value: Delivers <0.5% voltage shift over −40°C to +125°C due to matched TC and AEC-Q101 validation. |
| Industrial PLC Input Protection | Medical Instrument Voltage Clamp |
Use Scenario: Clamping transient overvoltage on 24 V digital input channels in programmable logic controllers. IC Role / Device Role / Timing Role: Acts as fast-acting shunt limiter during surge events (IEC 61000-4-5 Level 3). Use Value: Absorbs 350 mW peak pulses without degradation, preserving downstream logic integrity. |
Use Scenario: Protecting precision op-amp inputs in patient-connected diagnostic equipment from ESD and overvoltage. IC Role / Device Role / Timing Role: Provides low-leakage (0.1 µA) clamping at 27 V to prevent amplifier saturation. Use Value: Ensures signal fidelity and compliance with IEC 60601-1 creepage/clearance and leakage current limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5254B-TP (Micro Commercial) | 27 V nominal, ±5%, 500 mW rating, 30 Ω ZZT @ 20 mA - higher power but different test current | Requires recalibration of series resistor for same 2 mA bias; better for higher-current references | Select when >350 mW dissipation margin is needed and board space allows larger SOD-123 footprint |
| BZX84-C27LT1G (ON Semiconductor) | 27 V nominal, ±5%, 350 mW, 80 Ω ZZT @ 2 mA - identical electrical specs, SOT23-3L package | Same pinout and thermal performance; qualified to AEC-Q101 Rev. D (vs. Rev. C for Diodes Inc.) | Drop-in replacement where second-source assurance or specific AEC-Q101 revision compliance is mandated |
Compared with MMSZ5254B-TP and BZX84-C27LT1G, BZX84C27Q-13-F offers automotive qualification with verified green compound compliance and tighter process control for low-leakage applications, while maintaining identical SOT23 pinout and 2 mA test-point alignment.
Availability
BZX84C27Q-13-F is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and medical instrumentation requiring stable component supply, AEC-Q101 compliance, and halogen-free materials.
Supply support for BZX84C27Q-13-F 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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The BZX84C series belongs to Diodes' standard Zener diode product line, designed specifically for cost-effective, high-volume voltage regulation and reference applications in automotive and industrial environments.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C27Q-13-F?
The nominal Zener voltage is 27 V with a guaranteed range of 25.1 V to 28.9 V at 2 mA test current. Breakdown occurs within this band; operation below 21.4 V (the specified VR test point) yields ≤0.1 µA leakage, confirming sub-threshold blocking behavior.
Is BZX84C27Q-13-F suitable for use in high-temperature automotive under-hood applications?
Yes - it is AEC-Q101 qualified and rated for TJ = −65°C to +150°C. Its −3.5 mV/°C temperature coefficient and stable Zener impedance up to 150°C make it appropriate for engine control modules and transmission control units.
Does the "Q" suffix indicate automotive qualification?
Yes - the "Q" in BZX84C27Q-13-F denotes AEC-Q101 qualification. This distinguishes it from the standard-grade BZX84C27-13-F and confirms stress testing for vibration, thermal cycling, and high-temperature reverse bias per automotive reliability standards.
Can BZX84C27Q-13-F replace BZX84C24 or BZX84C30 in existing designs?
No - direct substitution is not recommended without circuit analysis. The 27 V rating differs by ≥3 V from adjacent values, altering feedback loop gain, power dissipation, and thermal margin. Recalculate series resistor and verify regulation stability across temperature and load.
BZX84C27Q-13-F 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:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±7.04%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 18.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C27Q-13-F FAQ
1.How can I place an order for BZX84C27Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C27Q-13-F 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 BZX84C27Q-13-F reliable?
The price and inventory of BZX84C27Q-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C27Q-13-F is usually 5 days.
3.What payment methods are accepted for BZX84C27Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C27Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C27Q-13-F?
BZX84C27Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C27Q-13-F 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 BZX84C27Q-13-F?
For technical support, including BZX84C27Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C27Q-13-F requirements.
6.How does Aetrix verify that BZX84C27Q-13-F is sourced from the original manufacturer or authorized distributors?
All BZX84C27Q-13-F 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 BZX84C27Q-13-F meets industry standards.
7.What is the process for return or replacement of BZX84C27Q-13-F?
All BZX84C27Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C27Q-13-F, 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 BZX84C27Q-13-F part is unused and in its original packaging.
Return procedure for BZX84C27Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C27Q-13-F Tags
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