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Diodes Incorporated BZT52C16SQ-7-F
- Part No.:
- BZT52C16SQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZT52C16SQ-7-F.pdf
- Description:
- DIODE ZENER 16V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,820
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Product details
Overview
BZT52C16SQ-7-F from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 16 V, ±5% tolerance (15.3–17.1 V at 5 mA), 200 mW power dissipation, and SOD323 package. It provides precise voltage regulation in low-power biasing, reference, and overvoltage protection circuits for automotive and industrial control modules.
For engineers reviewing the BZT52C16SQ-7-F datasheet, BZT52C16SQ-7-F pinout, BZT52C16SQ-7-F application, or BZT52C16SQ-7-F equivalent, key selection criteria include zener voltage accuracy, temperature coefficient (+11.2 mV/°C), low leakage (<0.1 µA at 10.4 V), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOD323 package supports high-density PCB layouts and automated assembly.
The device exhibits a typical zener impedance of 40 Ω at 5 mA test current and 200 Ω at 1 mA knee current, enabling predictable regulation performance in feedback networks and voltage clamp stages. Its thermal resistance (625 °C/W) and operating range (−65 to +150 °C) support use in thermally constrained environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V nominal, 15.3–17.1 V range at IZT = 5 mA - defines regulation setpoint with ±5% tolerance |
| Power Dissipation (PD) | 200 mW - maximum continuous power at TA = 25 °C; derates linearly above 25 °C per Fig. 1 |
| Zener Impedance (ZZT) | 40 Ω at 5 mA - indicates regulation stiffness; lower values improve load regulation |
| Reverse Leakage (IR) | <0.1 µA at VR = 10.4 V - ensures minimal quiescent current in standby clamp circuits |
| Temperature Coefficient | +11.2 mV/°C - positive drift enables compensation matching in multi-diode references |
| Package | SOD323 - 1.3 × 1.7 mm footprint with cathode band marking; compatible with standard reflow profiles |
Pinout & Package
Two-terminal device in SOD323 package: anode and cathode marked by a visible cathode band on the top surface. Terminals are matte tin-plated alloy 42 leads, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit common or lower-potential rail; forms reference return path |
| Cathode | Reverse-biased regulation terminal / Zener output node | Provides regulated voltage when reverse biased; connects to supply rail or feedback point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Lead-free & RoHS compliant | Fully compliant with EU Directive 2011/65/EU; no intentionally added lead or halogens |
| Low moisture sensitivity | MSL Level 1 per J-STD-020 - no dry-pack or bake required before assembly |
| Small outline package | SOD323 footprint (1.3 × 1.7 mm) enables high-density routing in space-constrained modules |
Applications
| Automotive ECU Voltage Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 16 V reference for analog-to-digital converter (ADC) biasing in engine control unit power management. IC Role / Device Role / Timing Role: Zener voltage reference element in precision voltage divider network feeding ADC input stage. Use Value: Maintains <±1% reference stability over −40 to +125 °C due to tight VZ tolerance and known TC. | Use Scenario: Clamping transient overvoltage on 12 V sensor supply lines in factory automation I/O modules. IC Role / Device Role / Timing Role: Reverse-biased overvoltage protector limiting rail excursion to ≤17.1 V during ESD or load dump events. Use Value: Absorbs up to 200 mW surge energy without degradation, verified per AEC-Q101 stress tests. |
| Consumer Power Adapter Feedback | Medical Device Bias Network |
Use Scenario: Setting feedback threshold in secondary-side regulation loop of isolated AC/DC adapter. IC Role / Device Role / Timing Role: Zener element in optocoupler feedback divider, defining output voltage setpoint. Use Value: Enables ±5% output voltage accuracy with minimal temperature-induced drift (TC = +11.2 mV/°C). | Use Scenario: Generating stable bias voltage for low-noise instrumentation amplifiers in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-leakage (≤0.1 µA) voltage reference source for amplifier offset trimming network. Use Value: Prevents reference drift from leakage-induced errors in microamp-level bias paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5245B-TP (Micro Commercial) | Same 16 V nominal rating, but ±5% tolerance only at 20 mA; higher ZZT = 45 Ω; non-AEC-Q101 | Limited to commercial-grade power supplies; not validated for automotive thermal cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification requirements |
| BZX84-C16 (Nexperia) | 16 V rating, SOT23 package (larger footprint); ZZT = 40 Ω at 5 mA; AEC-Q101 qualified | Requires PCB redesign due to 2.9 × 1.3 mm SOT23 vs. 1.3 × 1.7 mm SOD323; same thermal performance | Choose if existing SOT23 layout exists and board real estate is not constrained |
Compared with MMSZ5245B-TP and BZX84-C16, BZT52C16SQ-7-F delivers identical regulation performance in a smaller AEC-Q101-qualified package, making it optimal for next-generation automotive modules where space and qualification are both critical.
Availability
BZT52C16SQ-7-F is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface circuits, and medical device bias networks requiring stable component supply and full traceability.
Supply support for BZT52C16SQ-7-F 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for voltage regulation, reference, and transient suppression in harsh-environment electronics.
FAQ
What is the maximum reverse voltage (VR) at which leakage remains below 0.1 µA?
The BZT52C16SQ-7-F guarantees reverse leakage current ≤0.1 µA at VR = 10.4 V, as specified in the Electrical Characteristics table. This value is measured at TA = 25 °C and serves as the upper limit for low-leakage operation in precision bias networks.
Is this part suitable for reflow soldering, and what profile is recommended?
Yes - the SOD323 package and matte tin plating are fully compatible with standard lead-free reflow profiles (J-STD-020 Class 1). Peak temperature must not exceed 260 °C for ≤10 seconds; preheat ramp rate should be ≤3 °C/s to avoid thermal shock to the planar die.
How does the +11.2 mV/°C temperature coefficient affect long-term voltage stability?
The positive temperature coefficient means VZ increases by 11.2 mV per degree Celsius rise. Over a −40 to +125 °C range, this results in ~1.85 V total drift. For high-stability references, this must be compensated via circuit topology or matched-component pairing.
Does the "Q" in BZT52C16SQ-7-F indicate automotive qualification?
Yes - the "Q" suffix denotes AEC-Q101 qualification per the manufacturer's ordering nomenclature. This part meets stress test requirements for temperature cycling, humidity, mechanical shock, and high-temperature operating life applicable to automotive electronics.
BZT52C16SQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5.63%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 11.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZT52C16SQ-7-F FAQ
1.How can I place an order for BZT52C16SQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C16SQ-7-F 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 BZT52C16SQ-7-F reliable?
The price and inventory of BZT52C16SQ-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C16SQ-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C16SQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C16SQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C16SQ-7-F?
BZT52C16SQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C16SQ-7-F 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 BZT52C16SQ-7-F?
For technical support, including BZT52C16SQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C16SQ-7-F requirements.
6.How does Aetrix verify that BZT52C16SQ-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C16SQ-7-F 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 BZT52C16SQ-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C16SQ-7-F?
All BZT52C16SQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C16SQ-7-F, 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 BZT52C16SQ-7-F part is unused and in its original packaging.
Return procedure for BZT52C16SQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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