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Diodes Incorporated BZT52C36-7
- Part No.:
- BZT52C36-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C36-7.pdf
- Description:
- DIODE ZENER 36V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:4,399
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Product details
Overview
BZT52C36-7 from Diodes Incorporated is a surface-mount 36 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5.6% zener voltage tolerance (34.0–38.0 V), 90 Ω maximum zener impedance at 2 mA test current, and <0.1 µA reverse leakage at 25.2 V. It serves as a precision voltage reference or overvoltage clamp in low-power DC supply rails and sensor signal conditioning circuits.
For engineers reviewing the BZT52C36-7 datasheet, BZT52C36-7 pinout, BZT52C36-7 application, or BZT52C36-7 equivalent, key selection criteria include its 36 V nominal breakdown voltage, SOD123 footprint compatibility, thermal resistance (RθJA = 338 °C/W), AEC-Q101 qualification status, and low-temperature coefficient (–3.5 to 0 mV/°C) for stable regulation across industrial temperature ranges.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics and low leakage, while the SOD123 package supports automated placement and reflow soldering with UL 94V-0 flammability rating.
The device exhibits a typical zener impedance of 90 Ω at IZT = 2 mA and maintains <0.1 µA reverse current at VR = 25.2 V (70% of VZ), enabling reliable clamping in low-current protection circuits. Its thermal resistance junction-to-ambient (338 °C/W) requires careful PCB copper pad design per Diodes' recommended layout to sustain rated power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V nominal, 34.0–38.0 V range at IZT = 2 mA - defines precise clamping threshold for 3.3 V/5 V/12 V system rails |
| Power Dissipation | 370 mW at TA = +25°C - limits continuous current to ~10.3 mA at 36 V without heatsinking |
| Zener Impedance (ZZT) | 90 Ω max at IZT = 2 mA - determines regulation stiffness and output voltage variation under load changes |
| Reverse Leakage (IR) | <0.1 µA at VR = 25.2 V - ensures minimal quiescent current in battery-powered sensing nodes |
| Temperature Coefficient | –3.5 to 0 mV/°C - enables predictable drift compensation in temperature-stable references |
| Package | SOD123 - 2.65 mm × 1.55 mm footprint compatible with high-density PCB layouts and standard pick-and-place equipment |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking; dimensions: L = 0.30 mm (lead length), D = 1.55 mm (width), E = 2.65 mm (length), weight ≈ 0.010 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; reverse bias applied between cathode and anode to activate regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with band; supplies regulated 36 V when reverse-biased and current-limited to 2 mA minimum |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Lead-free & RoHS compliant | Fully compliant with EU Directive 2011/65/EU; no intentionally added lead, halogens, or antimony |
| Low moisture sensitivity | MSL Level 1 per J-STD-020 - no baking required before reflow assembly |
| Matte tin-plated terminals | Solderable per MIL-STD-202, Method 208 - ensures robust intermetallic formation and joint reliability |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADCs in temperature/humidity transmitters operating from 24 V DC rails. IC Role / Device Role / Timing Role: Zener reference source providing 36 V rail clamp and local 3.3 V LDO input stabilization. Use Value: Maintains ADC full-scale accuracy within ±0.5 LSB by limiting input surge to ≤38 V during field-induced transients. |
Use Scenario: Overvoltage protection on VCONN line in USB-C receptacles exposed to hot-plug surges up to 30 V. IC Role / Device Role / Timing Role: Fast-response shunt clamp absorbing transient energy before it reaches controller ICs. Use Value: Limits VCONN voltage to 38 V peak with <0.1 µA leakage at 25.2 V, preserving low-power standby operation. |
| Automotive Body Control Module (BCM) | IoT Node Battery Monitoring |
|
Use Scenario: Regulating auxiliary 5 V supply derived from 12 V battery in BCM microcontroller subsystems. IC Role / Device Role / Timing Role: Precision voltage reference for internal bandgap calibration and brown-out detection thresholds. Use Value: Enables ±1% supply monitoring accuracy across –40°C to +125°C due to low tempco (–3.5 to 0 mV/°C). |
Use Scenario: Protecting lithium-thionyl chloride (LiSOCl₂) battery voltage monitor inputs in remote asset trackers. IC Role / Device Role / Timing Role: Reverse-biased clamp preventing >36 V damage to 16-bit sigma-delta ADC front-end. Use Value: Delivers 90 Ω dynamic impedance at 2 mA, ensuring <10 mV regulation error during 100 ms load dumps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5236B-7-F | Same 36 V nominal VZ, but 200 mW PD rating and SOT-23 package; higher RθJA (450 °C/W) | Limited to lower-power applications (<5.5 mA continuous); unsuitable for 370 mW thermal loads | Select only if board space is constrained and power demand stays below 150 mW |
| BZX84-C36 | 36 V VZ, 300 mW PD, SOT-23 package; ±5% tolerance vs. ±5.6%; 100 Ω ZZT at 5 mA | Higher test current requirement reduces low-current regulation accuracy; not AEC-Q101 qualified | Acceptable for commercial-grade consumer electronics where automotive qualification is unnecessary |
Compared with MMBZ5236B-7-F and BZX84-C36, BZT52C36-7 offers superior power handling (370 mW), AEC-Q101 compliance, and tighter thermal management via SOD123's lower RθJA - making it the preferred choice for industrial and automotive voltage reference designs requiring long-term stability.
Availability
BZT52C36-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and IoT battery-monitoring circuits requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZT52C36-7 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.
The BZT52 series belongs to Diodes' general-purpose Zener diode product line, engineered for precision voltage regulation and transient suppression in cost-sensitive, high-volume applications with stringent environmental requirements.
FAQ
What is the maximum continuous reverse current for reliable Zener operation?
The BZT52C36-7 requires a minimum test current of 2 mA to maintain specified VZ and ZZT. For continuous operation, the absolute maximum reverse current is limited by power dissipation: at TA = +25°C, 370 mW / 36 V ≈ 10.3 mA. Exceeding this without thermal derating risks parametric shift or failure.
Is BZT52C36-7 suitable for use in automotive infotainment systems?
Yes - it is AEC-Q101 qualified and rated for TJ = –65°C to +150°C. Its SOD123 package, matte tin plating, and halogen-free construction meet automotive manufacturing and reliability standards for non-safety-critical subsystems like display backlight regulation and USB port protection.
How does the 90 Ω zener impedance affect circuit performance?
A 90 Ω impedance means that for every 1 mA change in reverse current, the output voltage shifts by ~90 mV. In practice, this limits regulation accuracy in varying-load applications unless combined with a current-source bias or feedback loop to stabilize IZ near 2 mA.
Can BZT52C36-7 replace BZT52C33 in an existing design?
No - BZT52C33 has a 33 V nominal VZ (31.0–35.0 V range) versus 36 V (34.0–38.0 V) for BZT52C36-7. Substituting would raise clamping voltage by ~3 V, potentially exceeding downstream IC absolute maximum ratings. Verify system margin before any replacement.
BZT52C36-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±6%
- Power - Max:
- 500 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C36-7 FAQ
1.How can I place an order for BZT52C36-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C36-7 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 BZT52C36-7 reliable?
The price and inventory of BZT52C36-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C36-7 is usually 5 days.
3.What payment methods are accepted for BZT52C36-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C36-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C36-7?
BZT52C36-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C36-7 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 BZT52C36-7?
For technical support, including BZT52C36-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C36-7 requirements.
6.How does Aetrix verify that BZT52C36-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C36-7 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 BZT52C36-7 meets industry standards.
7.What is the process for return or replacement of BZT52C36-7?
All BZT52C36-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C36-7, 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 BZT52C36-7 part is unused and in its original packaging.
Return procedure for BZT52C36-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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