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BZT52C15
Diotec Semiconductor
DIODE ZENER 15V 500MW SOD123F
185410 Pcs New Original In Stock
Zener Diode 15 V 500 mW ±5% Surface Mount SOD-123F
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5.0 / 5.0
- (377 Ratings)
BZT52C15
Product Overview
12944860
DiGi Electronics Part Number
BZT52C15-DGManufacturer
Diotec Semiconductor
BZT52C15
Description
DIODE ZENER 15V 500MW SOD123FInventory
185410 Pcs New Original In Stock
Zener Diode 15 V 500 mW ±5% Surface Mount SOD-123F
Quantity
Minimum 1
Minimum 1
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BZT52C15 Technical Specifications
Category
Diodes, Zener, Single Zener Diodes
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Voltage - Zener (Nom) (Vz)
15 V
Tolerance
±5%
Power - Max
500 mW
Impedance (Max) (Zzt)
40 Ohms
Current - Reverse Leakage @ Vr
100 nA @ 11 V
Operating Temperature
-50°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
SOD-123F
Supplier Device Package
SOD-123F
Datasheet & Documents
HTML Datasheet
BZT52C15-DG
Environmental & Export Classification
RoHS Status
Not applicable
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
Vendor Undefined
ECCN
EAR99
HTSUS
8541.10.0050
Additional Information
Other Names
4878-BZT52C15TR
2796-BZT52C15TR-DG
4878-BZT52C15CT
2796-BZT52C15TR
4878-BZT52C15DKR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
구매 후 즉각적인 고객 만족도를 높이는 서비스에 감탄했어요.
Dec 02, 2025
불편함 없이 신속하게 해결해 주시는 고객센터가 최고입니다.
Dec 02, 2025
Les prix sont très compétitifs et la livraison toujours dans les délais, parfait pour mes projets.
Dec 02, 2025
Bei DiGi Electronics stimmt einfach alles – von der Logistik bis zum transparenten Preismodell.
Dec 02, 2025
Delivery was faster than expected, and my order arrived safely thanks to their reliable logistics.
Dec 02, 2025
Their reliable shipping process ensures my orders arrive safely and on schedule.
Dec 02, 2025
I'm pleased with their commitment to eco-packaging and keeping prices low.
Dec 02, 2025
Quick and safe delivery ensures I receive top-quality electronics that last for years.
Dec 02, 2025
Their logistics tracking interface is clean, simple, and updated frequently, which I really appreciate.
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Frequently Asked Questions (FAQ)
Can the BZT52C15 Zener diode safely replace a 1N4744A in a 15V regulator circuit without compromising thermal performance or long-term reliability?
The BZT52C15 is a 500 mW Zener diode in a compact SOD-123F package, while the 1N4744A is a 1W device in a larger DO-41 axial package. Although both have a nominal 15V Zener voltage (±5%), the BZT52C15’s lower power rating and smaller thermal mass make it unsuitable for direct replacement in higher-current or poorly heatsinked applications. If your design draws more than ~33 mA (P = V × I → 0.5W / 15V), the BZT52C15 may overheat, leading to drift in Zener voltage or premature failure. For low-power reference or clamping roles under 20 mA, it can work, but always verify junction temperature using PCB copper area as a heatsink and derate accordingly—especially above 85°C ambient.
What are the key risks when using the BZT52C15 in a high-vibration automotive environment, and how does its SOD-123F package affect mechanical reliability compared to through-hole alternatives?
The BZT52C15’s surface-mount SOD-123F package offers space savings but presents mechanical reliability concerns in high-vibration settings like under-hood automotive applications. Unlike through-hole diodes with leads that absorb stress, the SOD-123F relies solely on solder joints, which are susceptible to fatigue over time. To mitigate this, ensure adequate pad design with thermal relief, use conformal coating to reduce stress concentration, and consider strain relief via nearby mechanical anchors. Additionally, verify that your PCB material (e.g., high-Tg FR4) and assembly process (e.g., reflow profile) minimize warpage. If vibration exceeds 5–10 G RMS, evaluate ruggedized alternatives like the MMSZ5231BT1G in a larger SMA package or consider conformal-mounted through-hole options.
How does the reverse leakage current of the BZT52C15 at 11V impact precision voltage reference circuits, and should it be avoided in low-power sensor interfaces?
With a specified reverse leakage of 100 nA @ 11V, the BZT52C15 introduces a small but non-negligible error current in high-impedance circuits such as those found in precision sensor biasing or ADC reference networks. In a 1 MΩ impedance path, this leakage creates a 100 mV offset—unacceptable in microvolt-level measurements. For low-power or high-precision applications (e.g., IoT sensor nodes or medical instrumentation), consider lower-leakage Zeners like the BZX84C15L (typically <10 nA) or use a buffered reference IC instead. The BZT52C15 is better suited for digital clamping, ESD protection, or coarse regulation where leakage-induced errors are below system noise floor.
Is the BZT52C15 a viable drop-in replacement for the MMSZ5231BT1G in a 3.3V-to-15V level-shifting protection circuit, and what layout considerations are critical?
No, the BZT52C15 is not a direct functional replacement for the MMSZ5231BT1G because they have different Zener voltages—15V vs. 3.3V—making them incompatible in level-shifting or I/O protection roles targeting 3.3V logic. However, if you're redesigning a 15V rail protection circuit previously using the MMSZ5245B (15V, 500mW), the BZT52C15 can serve as a pin-compatible alternative in SOD-123F. Critical layout considerations include minimizing trace inductance between the diode and the protected node (keep <5 mm), placing a local decoupling capacitor (e.g., 100 nF X7R) nearby, and ensuring sufficient copper pour under the SOD-123F to act as a heat spreader during transient events. Avoid long stubs that increase ESL and reduce clamping effectiveness.
What derating strategy should be applied to the BZT52C15 when operating near its maximum junction temperature of 150°C in an enclosed industrial control module?
The BZT52C15’s 500 mW power rating is specified at 25°C and must be significantly derated at elevated temperatures due to its lack of integrated heatsinking. At 100°C ambient, the allowable power dissipation drops to approximately 250 mW (50% derating), and near 150°C, it approaches zero. In an enclosed industrial module with poor airflow, implement a conservative derating curve: limit continuous power to ≤300 mW below 85°C and ≤150 mW above 100°C. Use thermal vias under the SOD-123F pad to connect to an internal ground plane, and monitor actual junction temperature via Tj = Ta + (P × RθJA), where RθJA is ~200–250°C/W for typical PCB layouts. If sustained loading exceeds 20 mA, consider paralleling diodes with ballast resistors or upgrading to a higher-power SMA-packaged Zener like the S1K-Zener series.
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BZT52C15 CAD Models
Diotec Semiconductor BZT52C15 PCB symbols & footprints
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