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Diodes Incorporated BZT52C36T-7
- Part No.:
- BZT52C36T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C36T-7.pdf
- Description:
- DIODE ZENER 36V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:5,187
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Product details
Overview
BZT52C36T-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 36 V, ±5.6% tolerance (34.0–38.0 V), 300 mW power dissipation, 90 Ω maximum zener impedance at 2 mA, and SOD523 package. It regulates voltage in low-power biasing, reference, and overvoltage protection circuits for industrial sensors and power supply feedback loops.
For engineers reviewing the BZT52C36T-7 datasheet, BZT52C36T-7 pinout, BZT52C36T-7 application, or BZT52C36T-7 equivalent, key selection criteria include zener voltage accuracy at 2 mA test current, thermal resistance (417 °C/W), reverse leakage (<0.1 µA at 25.2 V), and JEDEC-qualified reliability for high-reliability embedded systems.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or input conditions. Its 36 V nominal regulation point targets mid-range voltage reference needs where higher-voltage stability is required without discrete resistor-divider complexity.
Designed for surface-mount assembly on FR-4 PCBs with 2 oz copper, it delivers 300 mW power handling with thermal resistance of 417 °C/W (junction-to-ambient) and 160 °C/W (junction-to-case), enabling operation from –55 °C to +150 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V nominal, 34.0–38.0 V range at 2 mA - defines precise regulation threshold for feedback or clamp circuits |
| Power Dissipation (PD) | 300 mW - limits continuous power handling on standard SMT pads without forced cooling |
| Zener Impedance (ZZT) | 90 Ω max at 2 mA - determines output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | <0.1 µA at 25.2 V - ensures minimal quiescent current in high-impedance reference paths |
| Thermal Resistance (RθJA) | 417 °C/W - defines temperature rise per watt on standard single-sided 2 oz copper layout |
| Operating Temperature | –55 °C to +150 °C - supports extended-range industrial and automotive-adjacent environments |
Pinout & Package
Package: SOD523 - ultra-compact, low-profile surface-mount package (1.25 mm × 0.85 mm × 0.65 mm), cathode indicated by band marking, matte tin–annealed terminals solderable per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / voltage regulation output | Connected to regulated node; voltage clamped to 36 V when reverse current ≥2 mA flows through this terminal |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-qualified reliability | Qualified to AEC-Q standards for high-reliability applications including industrial control and power management |
| Green molding compound | UL 94V-0 rated, halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets RoHS 3 and automotive environmental requirements |
| Low-profile SOD523 footprint | 0.65 mm height enables dense PCB layouts in space-constrained modules like sensor transmitters and PMIC feedback networks |
| Moisture sensitivity Level 1 | No baking required before reflow - simplifies manufacturing and reduces process risk for high-volume SMT lines |
Applications
| Industrial Sensor Biasing | Power Supply Feedback Clamp |
|---|---|
|
Use Scenario: Providing stable bias voltage to analog front-end amplifiers in temperature or pressure sensors operating in harsh environments. IC Role / Device Role / Timing Role: Zener diode acting as precision voltage reference source for op-amp biasing and ADC reference scaling. Use Value: 36 V regulation enables direct use with 24 V industrial rails via series resistor, minimizing external component count while maintaining ±5.6% accuracy over temperature. |
Use Scenario: Clamping feedback voltage in isolated flyback or forward converter secondary-side regulation circuits. IC Role / Device Role / Timing Role: Voltage clamp protecting optocoupler input or TL431 reference pin from transient overvoltage. Use Value: 90 Ω zener impedance ensures fast response to output overvoltage events, limiting feedback error within 100 mV during 100 ns transients. |
| Overvoltage Protection | Reference Voltage Generator |
|
Use Scenario: Protecting microcontroller I/O pins or communication interfaces (e.g., RS-485 receivers) against ESD-induced voltage spikes. IC Role / Device Role / Timing Role: Shunt device diverting surge current above 36 V to ground, limiting peak voltage seen by downstream ICs. Use Value: Sub-0.1 µA leakage at 25.2 V prevents signal degradation in high-impedance data lines while clamping >36 V transients with predictable knee behavior. |
Use Scenario: Generating fixed reference voltage for comparator thresholds or DAC calibration in battery-powered instrumentation. IC Role / Device Role / Timing Role: Passive voltage reference element providing stable 36 V node for ratio-metric scaling of measurement circuits. Use Value: –3.5 mV/°C temperature coefficient allows predictable drift compensation in firmware, supporting ±0.5% total reference accuracy from –40 °C to +85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5275B-7-F | 36 V nominal, but ±5% tolerance (34.2–37.8 V); 225 mW PD; 100 Ω ZZT at 2 mA | Lower power rating limits use in sustained clamp scenarios; higher impedance increases regulation error under load | Select when board-level power budget restricts dissipation to ≤225 mW and tighter voltage tolerance is not required |
| BZX84-C36 | 36 V nominal, ±5% tolerance; SOT-23 package; 350 mW PD; 90 Ω ZZT at 5 mA | Larger SOT-23 footprint increases PCB area; higher test current shifts regulation point slightly upward | Prefer for legacy designs using SOT-23 footprints or where 350 mW headroom justifies larger package size |
Compared with MMBZ5275B-7-F and BZX84-C36, BZT52C36T-7 offers superior thermal performance (417 °C/W vs. ~500 °C/W for SOT-23 variants on same pad), smallest footprint (SOD523), and identical zener impedance - making it optimal for miniaturized, thermally constrained, high-accuracy reference designs.
Availability
BZT52C36T-7 is available at Aetrix Electronics and suitable for industrial sensor biasing, power supply feedback clamping, and overvoltage protection requiring stable component supply, JEDEC-qualified reliability, and RoHS 3 compliance.
Supply support for BZT52C36T-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, energy-efficient components for industrial, computing, and consumer markets.
The BZT52 series belongs to Diodes' precision Zener diode product line, engineered for stable voltage regulation in compact, cost-sensitive applications where tight tolerance, low leakage, and JEDEC qualification are critical.
FAQ
What is the maximum reverse current (IR) specification for BZT52C36T-7 at 25.2 V?
The datasheet specifies maximum reverse leakage current as <0.1 µA at VR = 25.2 V (70% of nominal zener voltage). This ultra-low leakage ensures minimal loading on high-impedance reference nodes and preserves accuracy in precision analog circuits where current draw must be sub-nanoampere.
Can BZT52C36T-7 be used in automotive applications?
BZT52C36T-7 is JEDEC-qualified for high reliability but is not AEC-Q200 certified. For automotive applications, Diodes offers the Q-suffix variant (e.g., BZT52C36TQ-7-F), manufactured in IATF 16949 facilities and qualified to AEC-Q200 - required for under-hood or safety-critical systems.
What is the thermal derating behavior above 25°C ambient?
Power dissipation must be linearly derated above 25°C at 0.72 mW/°C, based on RθJA = 417 °C/W. At 85°C ambient, maximum allowable power drops to 258 mW. Derating follows the curve in Figure 1 of DS30502 Rev. 18–2, assuming FR-4 board with 2 oz copper and 1.92 mm² pad area.
How does the 36 V zener voltage tolerance affect circuit design?
The ±5.6% tolerance (34.0–38.0 V) means design margins must accommodate worst-case regulation spread. For feedback clamping, ensure series resistor limits current to ≥2 mA even at 34.0 V to guarantee breakdown; for reference use, pair with trimming or calibration to achieve system-level accuracy.
BZT52C36T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5.56%
- Power - Max:
- 300 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:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZT52C36T-7 FAQ
1.How can I place an order for BZT52C36T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C36T-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 BZT52C36T-7 reliable?
The price and inventory of BZT52C36T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C36T-7 is usually 5 days.
3.What payment methods are accepted for BZT52C36T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C36T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C36T-7?
BZT52C36T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C36T-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 BZT52C36T-7?
For technical support, including BZT52C36T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C36T-7 requirements.
6.How does Aetrix verify that BZT52C36T-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C36T-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 BZT52C36T-7 meets industry standards.
7.What is the process for return or replacement of BZT52C36T-7?
All BZT52C36T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C36T-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 BZT52C36T-7 part is unused and in its original packaging.
Return procedure for BZT52C36T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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