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Nexperia USA Inc. BZT52H-C6V8-QX
- Part No.:
- BZT52H-C6V8-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-C6V8-QX.pdf
- Description:
- DIODE ZENER 6.8V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,142
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Product details
Overview
BZT52H-C6V8-QX from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 6.8 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation and reference applications.
For engineers reviewing the BZT52H-C6V8-QX datasheet, BZT52H-C6V8-QX pinout, BZT52H-C6V8-QX application, or BZT52H-C6V8-QX equivalent, this page delivers verified Zener parameters, thermal resistance values, differential resistance (8 Ω), temperature coefficient (+1.2 mV/K), and automotive-grade reliability data - all confirmed from Nexperia's official product data sheet Rev. 1 (2021).
Technical Context
This Zener diode operates in reverse-bias breakdown mode with a tightly controlled 6.4 V to 7.2 V working voltage range at IZ = 5 mA, and exhibits low dynamic impedance (8 Ω typical) for stable voltage reference performance under varying load conditions.
Its AEC-Q101 qualification confirms suitability for automotive environments, supported by junction temperature limits up to 150 °C, thermal resistance from junction to solder point of 70 K/W, and non-repetitive peak reverse current capability of 6.0 A (100 μs pulse).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 6.4 V to 7.2 V at IZ = 5 mA - defines precise regulation window for 6.8 V nominal reference |
| Differential Resistance (rdif) | 8 Ω typical - ensures minimal output voltage variation under load current changes |
| Temperature Coefficient (SZ) | +1.2 mV/K at IZ = 5 mA - indicates positive drift, enabling predictable thermal compensation in reference circuits |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - sets maximum continuous DC power handling |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction threshold in forward bias, relevant for polarity protection use cases |
| Reverse Current (IR) | 2 μA max at VR = 4.5 V - quantifies leakage below breakdown, critical for low-power standby regulation |
| Junction-to-Solder-Point Rth | 70 K/W - enables accurate thermal modeling when mounted on standard FR4 with cathode pad |
Pinout & Package
The device uses the SOD123F surface-mount plastic package (3.4–3.6 mm length × 2.5–2.7 mm width × 1.0–1.2 mm height), optimized for automated assembly and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marked by bar on package; carries reverse current during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for voltage reference function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and surge stress per discrete semiconductor standard |
| ±5 % voltage tolerance | Enables cost-effective precision regulation where tighter tolerances (±1 %/±2 %) are unnecessary, balancing accuracy and BOM cost |
| 830 mW power rating | Supports higher-current reference or clamp functions than standard 500 mW Zeners, reducing need for parallel devices |
| SOD123F footprint | Compatible with industry-standard reflow profiles and pick-and-place equipment; occupies < 10 mm² PCB area |
| Low 8 Ω dynamic impedance | Maintains regulation stability across load transients in power supply feedback networks and sensor biasing circuits |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 6.8 V reference for microcontroller ADC inputs monitoring battery voltage and door lock status. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precise analog reference point for measurement circuitry. Use Value: AEC-Q101 qualification ensures long-term stability across -40 °C to +125 °C ambient, eliminating calibration drift in harsh vehicle environments. |
Use Scenario: Biasing a 4–20 mA current-loop transmitter IC operating from a 12 V supply rail. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant 6.8 V across transmitter's internal reference, independent of loop current variations. Use Value: 8 Ω differential resistance minimizes output voltage shift under 20 mA load changes, preserving current-loop accuracy to ±0.1 %. |
| Consumer Power Adapter Feedback | Medical Portable Device Voltage Clamp |
Use Scenario: Setting feedback voltage threshold in secondary-side optocoupler-based regulation of a 5 V USB charger. IC Role / Device Role / Timing Role: Precision shunt reference defining error amplifier trip point in isolated flyback control loop. Use Value: Tight 6.4–7.2 V VZ range ensures consistent output regulation across production batches without trimming. |
Use Scenario: Clamping ESD-sensitive analog front-end inputs in a portable ECG monitor powered by lithium coin cell. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting input excursions to safe levels during electrostatic discharge events. Use Value: 6.0 A non-repetitive peak reverse current rating handles IEC 61000-4-2 Level 4 (8 kV contact) surges without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-B6V8-Q | ±2 % tolerance (6.66–6.94 V), 10 Ω rdif, +3.7 mV/K SZ | Higher precision reference needed; less thermal drift sensitivity required | Select when tighter voltage tolerance and lower tempco outweigh cost premium |
| MMBZ5235BS-7-F | ±5 % tolerance (6.46–7.14 V), SOT-323 package, 200 mW Ptot, 10 Ω rdif | Space-constrained designs where 830 mW dissipation is not required | Choose for ultra-dense layouts where SOD123F footprint is prohibitive, accepting reduced power margin |
Compared with BZT52H-C6V8-QX, the BZT52H-B6V8-Q offers tighter regulation but higher cost and slightly higher dynamic impedance, while MMBZ5235BS-7-F sacrifices 75 % power capacity and thermal robustness for smaller size - making the C-grade part optimal for cost-sensitive, thermally demanding automotive and industrial regulation.
Availability
BZT52H-C6V8-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer power adapter feedback loops, and medical device voltage clamping requiring stable component supply with AEC-Q101 compliance.
Supply support for BZT52H-C6V8-QX 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage reference and regulation in automotive ECUs, ADAS subsystems, and harsh-environment industrial controls.
FAQ
What is the maximum reverse voltage before breakdown for BZT52H-C6V8-QX?
The guaranteed breakdown voltage range is 6.4 V to 7.2 V at 5 mA test current, with no specified absolute maximum reverse voltage beyond this range. Operation above 7.2 V will cause conduction; sustained reverse voltage below 4.5 V yields ≤2 μA leakage per datasheet Table 8.
Can BZT52H-C6V8-QX be used in place of a 6.8 V TL431 shunt regulator?
No - the BZT52H-C6V8-QX is a passive two-terminal Zener diode without adjustable reference or active feedback. It lacks the TL431's 2.5 V internal reference, programmable output, and sink-current capability, making it unsuitable for precision closed-loop regulation.
Is the SOD123F package compatible with standard reflow soldering profiles?
Yes - Nexperia explicitly specifies reflow soldering as the only recommended method for SOD123F. The device supports JEDEC J-STD-020-compliant profiles, with peak temperatures up to 260 °C and time above liquidus of 60–90 seconds, as validated in the official soldering footprint documentation.
How does the +1.2 mV/K temperature coefficient affect circuit design?
This positive coefficient means output voltage increases ~1.2 mV per °C rise in junction temperature. In high-accuracy references, designers must either limit self-heating via derating or compensate using complementary negative-coefficient components like NTC thermistors or matched transistor pairs.
BZT52H-C6V8-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5.88%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52H-C6V8-QX FAQ
1.How can I place an order for BZT52H-C6V8-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-C6V8-QX 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-C6V8-QX reliable?
The price and inventory of BZT52H-C6V8-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-C6V8-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-C6V8-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C6V8-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-C6V8-QX?
BZT52H-C6V8-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-C6V8-QX 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-C6V8-QX?
For technical support, including BZT52H-C6V8-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C6V8-QX requirements.
6.How does Aetrix verify that BZT52H-C6V8-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-C6V8-QX 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-C6V8-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-C6V8-QX?
All BZT52H-C6V8-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C6V8-QX, 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-C6V8-QX part is unused and in its original packaging.
Return procedure for BZT52H-C6V8-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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