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Diodes Incorporated BZX84C36TQ-7-F
- Part No.:
- BZX84C36TQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOT-523
- Datasheet:
-
BZX84C36TQ-7-F.pdf
- Description:
- DIODE ZENER 34V 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:9,144
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Product details
Overview
BZX84C36TQ-7-F from Diodes Incorporated is a 36V, 150mW surface-mount Zener diode in SOT523 package, rated for 2mA test current with 90Ω dynamic impedance at 1kHz and 10pF junction capacitance at 1MHz/0V; used for precision voltage regulation and overvoltage protection in automotive power rails and sensor interface circuits.
For engineers reviewing the BZX84C36TQ-7-F datasheet, BZX84C36TQ-7-F pinout, BZX84C36TQ-7-F application, or BZX84C36TQ-7-F equivalent, key selection criteria include Zener voltage tolerance (±5.6%), temperature coefficient (30.4 mV/°C), AEC-Q101 qualification, and thermal resistance (833°C/W) under FR-4 mounting conditions.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across varying load and temperature conditions. It features planar die construction for consistent parametric performance and low leakage (0.1μA at 25.2V), with specified thermal derating above +25°C ambient per Figure 1.
The device delivers regulated 36V output within ±5.6% tolerance (34.0–38.0V) at 2mA test current, with 325Ω maximum knee impedance at 0.5mA and 30.4 mV/°C positive temperature coefficient-enabling predictable drift compensation in analog sensing front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 36.0V nominal, 34.0–38.0V range at 2mA - defines precise clamping threshold for 3.3V/5V/12V rail protection |
| Power Dissipation | 150mW at +25°C - limits continuous regulation capability; derates linearly above ambient per Fig.1 |
| Zener Impedance | 90Ω max at 1kHz, 2mA - determines voltage stability under dynamic load transients |
| Junction Capacitance | 10pF at 1MHz/0V - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| Reverse Leakage | 0.1μA max at 25.2V - ensures minimal quiescent current draw in battery-powered monitoring nodes |
| Temp Coefficient | +30.4 mV/°C - enables predictable voltage drift modeling for temperature-compensated references |
Pinout & Package
Package: SOT523 - ultra-small 3-pin surface-mount plastic package (1.60 × 1.60 × 0.75 mm), RoHS-compliant, halogen-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode reference node | Connected to lower-potential side of regulated circuit; polarity critical for correct Zener biasing |
| Cathode | Reverse breakdown terminal / voltage reference output | Provides stable 36V reference when biased above breakdown; connects to supply rail or feedback node |
| Case / Substrate | Non-electrical mechanical support | No internal connection; serves only as thermal path and mechanical anchor on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per IATF 16949 production flow |
| Ultra-small SOT523 footprint | 1.60 × 1.60 mm area saves board space in dense ADAS sensor modules and infotainment power supplies |
| Green compound (UL 94V-0) | Halogen- and antimony-free molding material meets automotive environmental compliance requirements (Br+Cl <1500ppm, Sb <1000ppm) |
| Low thermal resistance | 833°C/W junction-to-ambient enables operation up to +150°C junction temperature with minimal derating on standard FR-4 |
Applications
| Automotive Power Rail Protection | Industrial Sensor Reference |
|---|---|
Use Scenario: Clamping transient spikes on 12V/24V vehicle battery lines during load dump or alternator switching events. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp voltage to ≤38V, protecting downstream LDOs and microcontrollers. Use Value: Prevents damage to 36V-tolerant CAN transceivers and MCU I/O pins without requiring active TVS devices. | Use Scenario: Providing stable 36V reference for RTD or thermocouple signal conditioning in factory automation PLCs. IC Role / Device Role / Timing Role: Passive voltage reference source feeding precision op-amp gain stages and ADC bias networks. Use Value: Enables <±0.5% absolute accuracy over –40°C to +125°C due to predictable +30.4 mV/°C drift behavior. |
| Consumer USB-C PD Protection | Medical Diagnostic Equipment |
Use Scenario: Overvoltage guard on secondary-side 20V PPS rails in compact USB-C power adapters. IC Role / Device Role / Timing Role: Standby shunt regulator limiting voltage excursion during fast transient events (e.g., cable disconnect). Use Value: Maintains 10pF capacitance to avoid signal integrity degradation in high-speed CC line communication. | Use Scenario: Precision voltage clamp in ECG front-end amplifiers to protect ADC inputs from electrode pop transients. IC Role / Device Role / Timing Role: Low-leakage (0.1μA) Zener ensuring no DC offset injection into high-impedance biopotential sensing paths. Use Value: Preserves >120dB CMRR by minimizing input bias current perturbation during 36V clamping events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ36VALT1G | Same 36V rating but 200mW power, SOT-23 package, higher 120Ω Zzt | Larger footprint; better suited for higher-power industrial regulators | Select when >150mW dissipation margin required and board space permits SOT-23 |
| BZX84-C36-7-F | Identical electrical specs but non-automotive grade; lacks AEC-Q101 qualification and PPAP support | Not approved for automotive safety-critical systems or Tier-1 BOMs | Acceptable for cost-sensitive consumer designs where automotive certification is unnecessary |
Compared with MMBZ36VALT1G and BZX84-C36-7-F, the BZX84C36TQ-7-F uniquely combines AEC-Q101 qualification, SOT523 miniaturization, and 150mW dissipation-making it optimal for space-constrained automotive ECUs requiring traceable, PPAP-capable components.
Availability
BZX84C36TQ-7-F is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, USB-C PD protection, and medical diagnostic equipment requiring stable component supply and full automotive compliance documentation.
Supply support for BZX84C36TQ-7-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, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BZX84 series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for voltage regulation and transient suppression in harsh-environment electronic control units and sensor modules.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C36TQ-7-F?
The BZX84C36TQ-7-F has a nominal Zener voltage of 36.0V with a guaranteed range of 34.0V to 38.0V at 2mA test current. Breakdown occurs within this band; operation below 34.0V maintains negligible reverse current (<0.1μA), while voltages exceeding 38.0V risk uncontrolled conduction and thermal runaway if power limits are exceeded.
Is BZX84C36TQ-7-F compatible with lead-free reflow soldering processes?
Yes, BZX84C36TQ-7-F uses matte tin annealed terminals over Alloy 42 leadframe and complies with JEDEC J-STD-020 moisture sensitivity Level 1. It supports standard Pb-free reflow profiles up to 260°C peak temperature, with no pre-bake required due to its low moisture absorption characteristics.
How does the temperature coefficient affect long-term voltage stability?
With a +30.4 mV/°C temperature coefficient, the Zener voltage increases by approximately 30.4mV per degree Celsius rise above +25°C. At +125°C ambient, the voltage shifts +3.04V (100°C × 30.4mV/°C), resulting in ~39.0V output-within the 34.0–38.0V specification band only if derated power prevents self-heating-induced drift beyond datasheet limits.
Can BZX84C36TQ-7-F replace BZX84C33TQ-7-F in existing designs?
No direct substitution is recommended. BZX84C33TQ-7-F has 33V nominal Zener voltage (31.0–35.0V range) and different temperature coefficient (+25.2 mV/°C). Swapping introduces a 3V shift and altered thermal drift behavior, potentially violating system-level overvoltage thresholds and reference accuracy requirements in safety-critical automotive applications.
BZX84C36TQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 34 V
- Tolerance:
- ±2.94%
- Power - Max:
- 150 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BZX84C36TQ-7-F FAQ
1.How can I place an order for BZX84C36TQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C36TQ-7-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 BZX84C36TQ-7-F reliable?
The price and inventory of BZX84C36TQ-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C36TQ-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C36TQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C36TQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C36TQ-7-F?
BZX84C36TQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C36TQ-7-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 BZX84C36TQ-7-F?
For technical support, including BZX84C36TQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C36TQ-7-F requirements.
6.How does Aetrix verify that BZX84C36TQ-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C36TQ-7-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 BZX84C36TQ-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C36TQ-7-F?
All BZX84C36TQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C36TQ-7-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 BZX84C36TQ-7-F part is unused and in its original packaging.
Return procedure for BZX84C36TQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C36TQ-7-F Tags
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