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Diodes Incorporated BZT52C15T-7
- Part No.:
- BZT52C15T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C15T-7.pdf
- Description:
- DIODE ZENER 15V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:9,595
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Product details
Overview
BZT52C15T-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 15 V (min 13.8 V, max 15.6 V), 300 mW power dissipation, 30 Ω zener impedance at 5 mA test current, and operates across –55 °C to +150 °C. It uses an SOD523 package with cathode band marking and serves as a precision voltage reference or overvoltage clamp in low-power analog and power management circuits.
For engineers reviewing the BZT52C15T-7 datasheet, BZT52C15T-7 pinout, BZT52C15T-7 application, or BZT52C15T-7 equivalent, key selection criteria include zener voltage tolerance (±4%), thermal resistance (417 °C/W), reverse leakage (<0.1 µA at 10.5 V), temperature coefficient (+9.2 to +13.0 mV/°C), and SOD523 footprint compatibility for space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 5 mA and exhibits a positive temperature coefficient between +9.2 mV/°C and +13.0 mV/°C - critical for stable biasing in temperature-varying environments. Its 30 Ω dynamic impedance at IZT ensures predictable regulation under small-signal load variations.
The device is rated for 300 mW total power dissipation on FR-4 board with 2 oz copper and 1.92 mm² pad area, derating linearly above +25 °C per Fig. 1. Reverse leakage remains below 0.1 µA up to 10.5 V, enabling low-current standby protection in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V nominal, 13.8–15.6 V range at 5 mA - defines clamping threshold accuracy for voltage reference or surge suppression |
| Power Dissipation (PD) | 300 mW - maximum steady-state power on standard FR-4 layout; requires thermal derating above +25 °C |
| Zener Impedance (ZZT) | 30 Ω at 5 mA - determines output voltage variation under changing load current in regulation applications |
| Reverse Leakage (IR) | <0.1 µA at 10.5 V - enables ultra-low quiescent current operation in always-on monitoring circuits |
| Temperature Coefficient | +9.2 to +13.0 mV/°C - quantifies voltage drift with ambient temperature, essential for precision bias networks |
| Package | SOD523 - 1.25 mm × 0.85 mm footprint with 0.6 mm height; supports high-density routing and automated placement |
Pinout & Package
Package: SOD523 - ultra-compact surface-mount plastic package with cathode band marking; terminals are matte tin annealed over Alloy 42 leadframe, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias configuration; forms reference ground return path |
| Cathode | Zener breakdown terminal / voltage regulation node | Marked by band; connected to higher-potential rail to enable controlled reverse conduction at 15 V |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD523 package | 1.25 mm × 0.85 mm × 0.6 mm footprint - enables placement in tight spaces without compromising thermal performance |
| Totally lead-free & RoHS 3 compliant | Fully compliant with EU Directive 2015/863/EU - meets environmental requirements for industrial and consumer end equipment |
| Halogen- and antimony-free "Green" compound | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies stringent material content restrictions for automotive and medical applications |
| JEDEC-qualified reliability | Qualified to AEC-Q200 stress test standards - suitable for use in automotive modules requiring high-reliability passive components |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp for MCU I/O |
|---|---|
|
Use Scenario: Stabilizing feedback voltage in low-current LDO regulators or adjustable DC-DC converters. IC Role / Device Role / Timing Role: Zener diode provides fixed reference voltage to error amplifier input. Use Value: 15 V ±4% tolerance and 30 Ω impedance ensure <±15 mV output variation across 1–10 mA load changes. |
Use Scenario: Protecting 3.3 V or 5 V microcontroller GPIO pins from transient overvoltage events. IC Role / Device Role / Timing Role: Shunts excess energy to ground when input exceeds 15 V, limiting voltage seen by sensitive inputs. Use Value: Sub-0.1 µA leakage at 10.5 V prevents signal degradation during normal operation while clamping fast transients. |
| Automotive Sensor Bias Network | Industrial Analog Signal Conditioning |
|
Use Scenario: Providing stable excitation voltage to resistive temperature sensors (RTDs) or pressure transducers in engine control units. IC Role / Device Role / Timing Role: Acts as temperature-compensated bias source in bridge sensor interfaces. Use Value: +9.2 to +13.0 mV/°C TC allows predictable compensation matching common sensor drift profiles. |
Use Scenario: Setting precise thresholds in 4–20 mA loop receivers or analog front-end comparators. IC Role / Device Role / Timing Role: Supplies calibrated reference to op-amp or comparator input for level detection. Use Value: 300 mW rating and -55 °C to +150 °C operating range support robust operation in harsh factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245BS-7-F | Same 15 V nominal zener voltage but 200 mW PD, 35 Ω ZZT, SOT-323 package (larger than SOD523) | Higher thermal resistance (500 °C/W) limits power handling in compact layouts | Prefer when legacy SOT-323 footprint is required and space permits larger package |
| BZX84-C15 | 15 V zener, 350 mW PD, 30 Ω ZZT, SOT-23 package - 30% larger footprint than SOD523 | Higher power rating but incompatible with ultra-dense PCBs due to 2.9 mm × 1.3 mm outline | Select only if >300 mW continuous dissipation is needed and board area allows SOT-23 placement |
Compared with MMBZ5245BS-7-F and BZX84-C15, BZT52C15T-7 delivers identical voltage regulation performance in the smallest available footprint (SOD523), enabling highest PCB density while maintaining 300 mW capability and JEDEC reliability qualification - ideal for miniaturized automotive and portable electronics.
Availability
BZT52C15T-7 is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and sensor biasing applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for BZT52C15T-7 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, manufacturing, and sales operations across Asia, Europe, and North America.
The BZT52 series belongs to Diodes' precision Zener diode product line, engineered for stable voltage regulation and clamping in space-constrained, high-reliability applications including automotive, industrial, and portable electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZT52C15T-7?
The BZT52C15T-7 begins controlled reverse breakdown at a nominal 15 V, with guaranteed minimum and maximum values of 13.8 V and 15.6 V respectively at 5 mA test current. It does not conduct significantly below 13.8 V - reverse leakage remains under 0.1 µA at 10.5 V, confirming sharp knee behavior near rated voltage.
Can BZT52C15T-7 be used in automotive-grade designs?
Yes - the BZT52C15T-7 is qualified to JEDEC standards referenced in AEC-Q200 and manufactured in IATF 16949 certified facilities. While the standard part lacks Q-suffix designation, it meets high-reliability requirements for non-safety-critical automotive subsystems such as body control modules and sensor interfaces.
How does thermal derating affect BZT52C15T-7's power handling?
On a standard FR-4 board with 2 oz copper and 1.92 mm² pad area, BZT52C15T-7's 300 mW rating linearly derates above +25 °C at 0.72 mW/°C (based on RθJA = 417 °C/W). At +85 °C ambient, maximum allowable power drops to approximately 173 mW to maintain junction temperature ≤ +150 °C.
Is the SOD523 package compatible with standard reflow profiles?
Yes - the SOD523 package is rated for moisture sensitivity level 1 per J-STD-020 and supports standard lead-free reflow profiles (peak temperature ≤ 260 °C). Its matte tin finish ensures reliable wetting, and the 0.6 mm height allows compatibility with low-clearance pick-and-place equipment and conformal coating processes.
BZT52C15T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±6%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZT52C15T-7 FAQ
1.How can I place an order for BZT52C15T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C15T-7 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 BZT52C15T-7 reliable?
The price and inventory of BZT52C15T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C15T-7 is usually 5 days.
3.What payment methods are accepted for BZT52C15T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C15T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C15T-7?
BZT52C15T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C15T-7 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 BZT52C15T-7?
For technical support, including BZT52C15T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C15T-7 requirements.
6.How does Aetrix verify that BZT52C15T-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C15T-7 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 BZT52C15T-7 meets industry standards.
7.What is the process for return or replacement of BZT52C15T-7?
All BZT52C15T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C15T-7, 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 BZT52C15T-7 part is unused and in its original packaging.
Return procedure for BZT52C15T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52C15T-7 Tags
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