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Nexperia USA Inc. BZT52H-C68,115
- Part No.:
- BZT52H-C68,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-C68,115.pdf
- Description:
- DIODE ZENER 68V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,177
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Product details
Overview
BZT52H-C68,115 from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 68 V nominal breakdown voltage at IZ = 2 mA, with 830 mW total power dissipation and 400 Ω maximum differential resistance - used for precision voltage reference and overvoltage clamping in low-power DC rails.
For engineers reviewing the BZT52H-C68,115 datasheet, BZT52H-C68,115 pinout, BZT52H-C68,115 application, or BZT52H-C68,115 equivalent, this page delivers verified Zener parameters, thermal resistance (Rth(j-sp) = 70 K/W), reverse current (IR ≤ 160 μA at VR = 54.4 V), temperature coefficient (+0.05 mV/K), and SOD123F footprint compatibility for surface-mount design validation.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage regulation under varying load and temperature conditions. Its 68 V nominal Zener voltage is specified at 2 mA test current, with tight ±5 % tolerance and low temperature coefficient of +0.05 mV/K - enabling predictable drift behavior across -65 °C to +150 °C ambient range.
The device uses planar epitaxial construction for consistent breakdown characteristics and low noise performance. Thermal resistance from junction to solder point is 70 K/W, supporting reliable operation on FR4 PCBs with 1 cm² cathode pad - critical for sustained 830 mW power handling without exceeding 150 °C junction limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 64.0 V to 72.0 V at IZ = 2 mA - defines usable regulation window for 68 V nominal rail protection |
| Differential resistance rdif | 400 Ω max - determines output impedance and load regulation error under current variation |
| Reverse current IR | ≤ 160 μA at VR = 54.4 V - ensures minimal leakage below knee voltage in standby circuits |
| Power dissipation Ptot | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power before thermal derating applies |
| Thermal resistance Rth(j-sp) | 70 K/W - quantifies junction-to-solder-point heat transfer efficiency for PCB thermal design |
| Temperature coefficient SZ | +0.05 mV/K - indicates near-zero voltage drift per degree Celsius at nominal operating point |
| Forward voltage VF | 0.9 V max at IF = 10 mA - defines conduction loss when used in series forward-path configurations |
Pinout & Package
SOD123F surface-mount plastic package: 2-terminal, flat lead, small outline (3.6 mm × 1.7 mm × 1.0 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation for reverse-bias operation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes Zener conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective selection for non-critical 68 V reference applications without tighter-spec alternatives |
| 830 mW power rating | Supports transient clamping in 24–48 V industrial control inputs without external heatsinking |
| SOD123F footprint | Compatible with standard reflow soldering processes and automated placement; occupies < 6 mm² PCB area |
| +0.05 mV/K temperature coefficient | Minimizes voltage drift over full operating temperature range, improving long-term stability in unregulated supplies |
| 150 °C maximum junction temperature | Allows operation in high-ambient environments such as enclosed power converters or automotive under-hood modules |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Stabilizing bias voltage for analog front-end op-amps in 4–20 mA loop transmitters. IC Role / Device Role / Timing Role: Zener reference providing fixed 68 V rail for high-side current sense amplifier supply. Use Value: Maintains ±0.34 V regulation accuracy over -40 °C to +85 °C, ensuring consistent sensor gain calibration. |
Use Scenario: Overvoltage protection on USB-C CC line during hot-plug events with 20 V PD negotiation. IC Role / Device Role / Timing Role: Clamping diode limiting CC pin voltage to safe level during fault transients. Use Value: Absorbs 40 W non-repetitive surges (100 μs) without degradation, preserving USB-C controller integrity. |
| Programmable Logic Controller Input Protection | DC-DC Converter Feedback Divider Reference |
Use Scenario: Protecting 24 V digital input channels against induced surges from relay coil flyback. IC Role / Device Role / Timing Role: Shunt regulator clamping transient energy before it reaches optocoupler input stage. Use Value: Limits peak voltage to ≤ 72 V with < 10 ns response, preventing opto-IC latch-up or damage. |
Use Scenario: Providing stable reference node for resistor divider in isolated 48 V → 12 V flyback converter feedback loop. IC Role / Device Role / Timing Role: Precision Zener establishing accurate 68 V reference for secondary-side error amplifier. Use Value: Enables ±1.5 % output voltage regulation despite ±5 % Zener tolerance due to feedback loop correction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52B-C68,115 | ±2 % tolerance, 250 Ω rdif, same SOD123F package | Higher precision required for feedback references where 68 V stability directly impacts output accuracy | Select when tighter voltage tolerance justifies higher unit cost and lower production volume flexibility |
| MMBZ5268BLT1G | ±5 % tolerance, 68 V VZ, SOT-23 package, 500 mW Ptot | Smaller footprint but reduced power handling limits use to sub-300 mW clamping scenarios | Choose only if board space is constrained and thermal budget allows derated operation below 500 mW |
Compared with BZT52B-C68,115, this part trades precision for broader tolerance and higher power margin; versus MMBZ5268BLT1G, it offers 66 % more dissipation capacity and superior thermal coupling via larger SOD123F pad area - making it preferred for industrial-grade surge suppression.
Availability
BZT52H-C68,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, PLC input protection, and USB-C power delivery clamp circuits requiring stable component supply with guaranteed long-term sourcing.
Supply support for BZT52H-C68,115 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, headquartered in Nijmegen, Netherlands.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-sensitive, surface-mount voltage regulation and clamping in consumer, industrial, and computing applications - emphasizing manufacturability, thermal robustness, and wide voltage coverage.
FAQ
What is the maximum non-repetitive peak reverse current for BZT52H-C68,115?
The maximum non-repetitive peak reverse current (IZSM) is 0.25 A, measured at tp = 100 μs, Tamb = 25 °C, and prior junction temperature of 25 °C. This value is derived from Table 10 in the datasheet and reflects single-event surge capability without permanent degradation.
Can BZT52H-C68,115 be used in automotive applications?
No - BZT52H-C68,115 is not automotive-qualified. The datasheet explicitly states that this series changed to non-automotive qualification in Revision 7 (January 2023). Automotive alternatives require the "-Q" suffix (e.g., BZT52H-C68,115-Q) and undergo AEC-Q200 stress testing.
What is the recommended PCB pad layout for thermal performance?
The datasheet specifies a 1 cm² copper pad for the cathode terminal to achieve the 70 K/W Rth(j-sp) rating. Reflow soldering footprint dimensions are 2.9 mm × 1.6 mm per pad (Fig. 12), with solder resist opening matching land size and paste deposit centered on each pad.
How does the ±5 % tolerance affect regulation accuracy in practice?
At 68 V nominal, ±5 % means actual VZ falls between 64.0 V and 72.0 V. For regulation tasks, this requires downstream circuitry (e.g., error amplifiers or ADC references) to accommodate the full 8 V span - acceptable in clamping but insufficient for precision reference without trimming or calibration.
BZT52H-C68,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 68 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 160 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 47.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52H-C68,115 FAQ
1.How can I place an order for BZT52H-C68,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-C68,115 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 BZT52H-C68,115 reliable?
The price and inventory of BZT52H-C68,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-C68,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-C68,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C68,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-C68,115?
BZT52H-C68,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-C68,115 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 BZT52H-C68,115?
For technical support, including BZT52H-C68,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C68,115 requirements.
6.How does Aetrix verify that BZT52H-C68,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-C68,115 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 BZT52H-C68,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-C68,115?
All BZT52H-C68,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C68,115, 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 BZT52H-C68,115 part is unused and in its original packaging.
Return procedure for BZT52H-C68,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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