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Nexperia USA Inc. BZT52-C36X
- Part No.:
- BZT52-C36X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C36X.pdf
- Description:
- DIODE ZENER 36V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,974
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Product details
Overview
BZT52-C36X from Nexperia is a precision Zener voltage regulator diode in SOD123 surface-mount package, designed for low-power voltage reference and overvoltage protection in biasing, feedback, and clamp circuits. It delivers a nominal 36 V Zener voltage at 2 mA test current, ±5 % tolerance, 250 Ω typical differential resistance, and supports up to 590 mW total power dissipation at 25 °C ambient.
For engineers reviewing the BZT52-C36X datasheet, BZT52-C36X pinout, BZT52-C36X application, or BZT52-C36X equivalent, this page provides verified electrical parameters, thermal behavior under PCB mounting conditions, cathode/anode terminal mapping, real-world regulation use cases, and validated alternative parts for design flexibility and supply continuity.
Technical Context
This Zener diode operates in reverse breakdown mode with a tightly controlled 36 V nominal working voltage (VZ) at IZ = 2 mA, exhibiting a temperature coefficient of +25.2 mV/K at 5 mA - indicating positive drift with junction temperature rise. Its low 250 Ω typical differential resistance ensures stable regulation under small load variations.
The device is rated for 590 mW total power dissipation when mounted on an FR4 PCB with 1 cm² cathode pad, and features a non-repetitive peak reverse power dissipation of 40 W for 100 μs pulses. Reverse leakage remains ≤0.05 μA at 28.8 V (80 % of VZ), supporting reliable clamping in low-current sensing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 36 V at IZ = 2 mA - defines precise DC reference point for feedback loops or voltage threshold detection |
| Tolerance | ±5 % - enables cost-effective selection where tight regulation is not required, e.g., non-critical bias networks |
| rdif | 250 Ω typical - determines output impedance and load regulation error in shunt regulator configurations |
| Ptot | 590 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - sets maximum continuous power handling in standard PCB layout |
| IR @ VR = 28.8 V | ≤0.05 μA - ensures minimal leakage current in high-impedance clamp or reference nodes |
| Tj max | 150 °C - constrains thermal design margin when operating near Ptot limit on FR4 board |
| Rth(j-a) | 350 K/W - quantifies self-heating in free-air; requires thermal relief for sustained >100 mW operation |
Pinout & Package
SOD123 plastic surface-mounted package: 2-terminal, flat lead, 2.80 mm × 1.70 mm body, 0.70 mm height, cathode marked by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive - reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 250 Ω typical - minimizes output voltage shift under varying load current in shunt regulation |
| Wide voltage range coverage | 36 V nominal within E24 series - supports standardized BOM consolidation across multiple reference points |
| Surface-mount compatibility | SOD123 footprint - enables automated assembly and compact layout in space-constrained consumer and industrial PCBs |
| Controlled temperature coefficient | +25.2 mV/K at 5 mA - predictable VZ drift allows compensation in temperature-sensitive analog circuits |
| Low leakage performance | ≤0.05 μA at 80 % VZ - preserves signal integrity in high-impedance sensor interfaces and precision dividers |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or buck-derived auxiliary supplies via optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener diode provides precise 36 V reference to TL431 or similar shunt regulator IC, setting secondary-side regulation threshold. Use Value: Enables ±5 % output accuracy without trimming; 250 Ω rdif limits feedback error under dynamic load steps. |
Use Scenario: Protecting microcontroller I/O pins or ADC inputs from transient surges exceeding 36 V. IC Role / Device Role / Timing Role: Acts as passive crowbar element, conducting excess energy to ground when input exceeds VZ. Use Value: Limits clamped voltage to ≤36.8 V (including tolerance), preserving 3.3 V/5 V logic integrity with <0.05 μA standby leakage. |
| DC Bias Voltage Generator | Current Source Setpoint |
Use Scenario: Establishing fixed bias point for op-amp input stages or transistor base drive in analog front-ends. IC Role / Device Role / Timing Role: Provides stable 36 V reference to generate intermediate rail (e.g., ±18 V) via resistor divider and buffer. Use Value: ±5 % tolerance and +25.2 mV/K TC allow predictable offset calibration; SOD123 size fits dense analog layouts. |
Use Scenario: Setting reference voltage for constant-current LED driver or laser diode bias circuit. IC Role / Device Role / Timing Role: Supplies 36 V reference to current-sense amplifier or DAC-based control loop to define target current magnitude. Use Value: Low 250 Ω rdif ensures current setpoint stability against supply ripple; 590 mW rating supports ≥10 mA sink capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5267BLT1G | 36 V nominal, ±5 %, 200 Ω rdif, SOD-123 package, automotive-qualified (AEC-Q200) | Higher reliability grade; suitable for automotive infotainment power rails where qualification is mandatory | Select when AEC-Q200 compliance is required; identical footprint but tighter process control increases cost |
| Vishay BZX84-C36 | 36 V nominal, ±5 %, 250 Ω rdif, SOT-23 package, 350 mW Ptot | Smaller SOT-23 footprint but lower power rating - limits continuous current to ~9.7 mA vs. 16.4 mA for BZT52-C36X | Choose for ultra-compact designs where 350 mW suffices; verify thermal relief due to higher Rth(j-a) |
Compared with MMBZ5267BLT1G and BZX84-C36, BZT52-C36X offers the highest power handling (590 mW) in SOD-123, making it optimal for industrial power supplies needing robustness without automotive qualification overhead, while BZX84-C36 trades power for board area savings.
Availability
BZT52-C36X is available at Aetrix Electronics and suitable for power supply feedback references, overvoltage clamp protection, and DC bias voltage generation requiring stable component supply and consistent ±5 % Zener tolerance.
Supply support for BZT52-C36X 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.
The BZT52 series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-sensitive, space-constrained applications demanding stable voltage regulation without automotive qualification.
FAQ
What is the maximum continuous reverse current the BZT52-C36X can sustain at 25 °C ambient?
The BZT52-C36X supports up to 16.4 mA continuous reverse current at 25 °C ambient, calculated from its 590 mW total power dissipation rating and 36 V nominal Zener voltage (Ptot/VZ). This assumes proper thermal relief per the 1 cm² cathode pad requirement specified in the datasheet.
How does the temperature coefficient affect regulation accuracy over –40 °C to +125 °C?
With a +25.2 mV/K temperature coefficient at 5 mA, the BZT52-C36X exhibits approximately +4.3 V total VZ increase across a 170 K junction temperature range. Designers must account for this drift in precision references; it is less critical in clamping applications where absolute accuracy is secondary to threshold consistency.
Can BZT52-C36X be used in parallel for higher current handling?
No - Zener diodes should not be paralleled due to mismatched VZ and rdif values causing current hogging and thermal runaway. For higher current, use a single higher-power Zener or implement active regulation with a transistor pass element driven by the BZT52-C36X reference.
Is the SOD123 footprint compatible with reflow soldering per JEDEC J-STD-020?
Yes - Nexperia specifies reflow soldering as the only recommended method for SOD123 packages. The device complies with JEDEC J-STD-020 moisture sensitivity level (MSL) 1 and supports peak reflow temperatures up to 260 °C, provided the thermal profile adheres to the recommended ramp rates and time-above-liquidus limits in the datasheet.
BZT52-C36X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5.6%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C36X FAQ
1.How can I place an order for BZT52-C36X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C36X 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 BZT52-C36X reliable?
The price and inventory of BZT52-C36X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C36X is usually 5 days.
3.What payment methods are accepted for BZT52-C36X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C36X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C36X?
BZT52-C36X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C36X 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 BZT52-C36X?
For technical support, including BZT52-C36X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C36X requirements.
6.How does Aetrix verify that BZT52-C36X is sourced from the original manufacturer or authorized distributors?
All BZT52-C36X 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 BZT52-C36X meets industry standards.
7.What is the process for return or replacement of BZT52-C36X?
All BZT52-C36X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C36X, 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 BZT52-C36X part is unused and in its original packaging.
Return procedure for BZT52-C36X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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