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Nexperia USA Inc. BZT52-C30X
- Part No.:
- BZT52-C30X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C30X.pdf
- Description:
- DIODE ZENER 30V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,905
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Product details
Overview
BZT52-C30X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 30 V nominal Zener voltage at 2 mA test current, 250 mA maximum forward current, and 590 mW total power dissipation at Tamb ≤ 25 °C. It provides stable voltage regulation in low-power biasing, reference, and overvoltage protection circuits.
For engineers reviewing the BZT52-C30X datasheet, BZT52-C30X pinout, BZT52-C30X application, or BZT52-C30X equivalent, key selection criteria include its 30 V Zener voltage tolerance, differential resistance of 250 Ω (max), reverse current ≤ 0.05 μA at VR = 22.8 V, temperature coefficient of +0.05 mV/K, and SOD123 surface-mount compatibility with standard reflow profiles.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 30 V reference across load variations, with specified performance at IZ = 2 mA per Table 9. Its low differential resistance (≤250 Ω) ensures minimal voltage shift under current changes, while the ±5 % tolerance band supports cost-sensitive general-purpose regulation.
The device uses silicon planar epitaxial construction and is qualified for industrial temperature range (−55 °C to +150 °C). Thermal resistance from junction to ambient is 350 K/W on FR4 PCB with single-sided copper, defining derating behavior above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28.0 V to 32.0 V at IZ = 2 mA - defines regulated output range under nominal bias |
| Differential Resistance (rdif) | ≤250 Ω - limits voltage deviation during load current transients |
| Reverse Current (IR) | ≤0.05 μA at VR = 22.8 V - ensures low leakage in standby regulation |
| Power Dissipation (Ptot) | 590 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables use as low-drop rectifier or clamp in forward bias |
| Junction Temperature (Tj) | 150 °C maximum - determines thermal design margin for PCB layout and airflow |
| Package | SOD123 - 2.8 mm × 1.7 mm surface-mount footprint compatible with automated assembly |
Pinout & Package
SOD123 plastic surface-mounted package with two leads; cathode identified by marking band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar indicates this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias polarity required for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-optimized selection where tight regulation is not critical, e.g., non-precision bias networks |
| Low differential resistance (≤250 Ω) | Reduces output voltage variation under ±1 mA load shifts, improving stability in feedback paths |
| 150 °C max junction temperature | Supports operation in enclosed industrial enclosures without forced cooling |
| Non-repetitive peak reverse current (IZSM) | 1.0 A for 100 μs pulses - allows transient overvoltage clamping in surge-prone interfaces |
| SOD123 footprint compatibility | Matches IPC-7351B standard land pattern (2.36 mm × 1.11 mm pad), enabling drop-in placement |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 30 V reference for op-amp comparators in DC-DC converter feedback loops. IC Role / Device Role / Timing Role: Zener diode acts as passive voltage reference source, replacing higher-cost precision references where ±5 % accuracy suffices. Use Value: Eliminates need for external regulator IC in low-current auxiliary rails, reducing BOM count and board area. |
Use Scenario: Protecting microcontroller GPIO pins from 36 V transients induced on 24 V industrial sensor lines. IC Role / Device Role / Timing Role: Reverse-biased Zener shunts excess energy to ground when line voltage exceeds 30 V + diode forward drop. Use Value: Limits pin voltage to <31 V during 100 μs surges up to 1 A, preventing ESD latch-up or oxide rupture. |
| LED Current Bias | Signal Level Shifting |
|
Use Scenario: Setting constant bias current for high-brightness white LEDs in signage drivers. IC Role / Device Role / Timing Role: Zener + series resistor forms simple, temperature-compensated current source (ILED ≈ (VIN − 30 V)/R). Use Value: Maintains LED brightness within ±8 % over −40 °C to +85 °C ambient due to low tempco (+0.05 mV/K). |
Use Scenario: Translating 3.3 V logic signals to 30 V level for driving high-side gate drivers in motor control H-bridges. IC Role / Device Role / Timing Role: Forward-biased anode-to-30 V rail creates ~0.9 V offset, enabling clean high-threshold detection. Use Value: Provides deterministic 30.9 V logic-high threshold with sub-10 ns propagation delay, avoiding Schmitt-trigger complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5262BLT1G | 30 V nominal, ±5 %, SOT-23 package, 225 mW Ptot, rdif ≤ 35 Ω | Lower power rating and smaller package reduce thermal mass; unsuitable for >150 mW continuous dissipation | Select when board space is constrained and power demand is <100 mW |
| Vishay BZX84-C30 | 30 V nominal, ±5 %, SOT-23 package, 350 mW Ptot, rdif ≤ 50 Ω | Higher thermal resistance (450 K/W) requires larger copper pour for same power handling | Select when tighter regulation (lower rdif) is needed but SOD123 footprint is not mandatory |
Compared with BZT52-C30X, MMBZ5262BLT1G offers lower dynamic impedance but sacrifices 40 % power headroom, while BZX84-C30 improves regulation precision at the cost of reduced thermal efficiency in compact layouts.
Availability
BZT52-C30X is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) input conditioning, and embedded power supply monitoring requiring stable component supply and long-term obsolescence management.
Supply support for BZT52-C30X 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, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
The BZT52 series belongs to Nexperia's general-purpose Zener diode product line, designed specifically for cost-effective voltage regulation, biasing, and transient suppression in industrial, consumer, and computing applications.
FAQ
What is the maximum continuous reverse power dissipation for BZT52-C30X at 70 °C ambient?
At 70 °C ambient, derating applies: Ptot = 590 mW − [(70 − 25) × (590 mW / 350 K/W)] = 590 mW − 75 mW = 515 mW. This assumes standard FR4 mounting with single-sided copper; actual value depends on PCB copper area and airflow.
Can BZT52-C30X be used in place of a 30 V Zener with ±2 % tolerance?
No - BZT52-C30X has ±5 % tolerance (28.0–32.0 V), whereas ±2 % variants (e.g., BZT52-B30) specify 29.4–30.6 V. Substituting introduces up to 1.0 V additional error in reference-critical circuits like ADC voltage references.
Is the SOD123 package lead-free and RoHS compliant?
Yes - Nexperia confirms BZT52-C30X meets RoHS Directive 2011/65/EU and is manufactured with lead-free terminations and halogen-free molding compound, per Nexperia's product compliance documentation dated October 2025.
What is the typical reverse recovery time for BZT52-C30X?
Reverse recovery time is not characterized or guaranteed for Zener diodes in this series. The device is optimized for DC and low-frequency regulation, not switching; use fast-recovery diodes (e.g., BAS21) for >10 kHz AC applications.
BZT52-C30X 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):
- 30 V
- Tolerance:
- ±6.7%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21 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-C30X FAQ
1.How can I place an order for BZT52-C30X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C30X 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-C30X reliable?
The price and inventory of BZT52-C30X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C30X is usually 5 days.
3.What payment methods are accepted for BZT52-C30X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C30X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C30X?
BZT52-C30X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C30X 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-C30X?
For technical support, including BZT52-C30X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C30X requirements.
6.How does Aetrix verify that BZT52-C30X is sourced from the original manufacturer or authorized distributors?
All BZT52-C30X 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-C30X meets industry standards.
7.What is the process for return or replacement of BZT52-C30X?
All BZT52-C30X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C30X, 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-C30X part is unused and in its original packaging.
Return procedure for BZT52-C30X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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