RD15S-A Renesas Electronics Integrated Circuit (Small Outline Diode) In Stock
Renesas RD15S-A is a 15V Zener diode with 0.2W power dissipation in a compact 2-pin Super MiniMold SMT package for precision voltage regulation and clamping. Suitable for overvoltage protection and reference voltage applications in consumer electronics and industrial circuits.
- Manufacturer
- Renesas Electronics
- Package
- Small Outline Diode
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 15V Zener breakdown voltage providing precise voltage clamping and regulation in low-power circuits
- 0.2W power dissipation rating in an ultra-compact 2-pin Super MiniMold SMT package for high-density PCBs
- Surface-mount construction enabling automated assembly and minimal PCB real estate in space-critical designs
- Stable Zener reference suitable for biasing and protection circuits across industrial temperature ranges
Applications
The Renesas RD15S-A Zener diode is commonly used for overvoltage protection on signal and power lines where the nominal voltage must be clamped to 15V to protect downstream ICs from transient spikes. Its small Super MiniMold package makes it ideal for dense SMT PCBs in smartphones, wearable devices, and IoT edge nodes where board space is at a premium. Industrial control panels and automotive interface circuits also use this diode to provide stable 15V reference points or to clamp ESD-induced transients on communication lines.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum power dissipation of the RD15S-A and how does it limit the operating current?
The RD15S-A has a maximum power dissipation of 0.2W (200 mW) in the Super MiniMold package. At its nominal 15V Zener voltage, this limits the continuous operating current to approximately 13 mA (0.2W / 15V). Designers must ensure series resistance is selected so the Zener current stays within this 13 mA limit under worst-case supply voltage conditions to prevent thermal overload.
How does the RD15S-A Super MiniMold package compare to standard SOD-323 or SOD-523 diode packages in terms of board footprint?
The Renesas Super MiniMold package for the RD15S-A has a footprint similar to or smaller than an SOD-523 package, with a body measuring approximately 1.2 mm × 0.8 mm. This is roughly 30% smaller than a standard SOD-323, making it ideal for ultra-compact PCB designs where even a few tenths of a millimeter in component spacing matter for high-density assemblies.
Can the RD15S-A be used to protect a 12V rail from overvoltage transients in industrial equipment?
Yes, the RD15S-A with a 15V Zener voltage provides a suitable clamp for protecting circuits on a 12V nominal rail. It will begin conducting at 15V, clamping any transient spikes before they damage downstream ICs rated for 16V or less. The 0.2W power rating means transient energy must be limited; for high-energy bursts such as 100V spikes, an additional TVS diode or series resistor is needed to share power dissipation within the 200 mW budget.
What is the typical Zener impedance of the RD15S-A and how does it affect voltage regulation accuracy?
For a 15V Zener diode of this power class, typical dynamic impedance is in the range of 30 Ω to 80 Ω at the test current. This means that for each 1 mA change in Zener current, the output voltage changes by approximately 30 mV to 80 mV. For tighter regulation than ±2%, a bandgap reference IC should be considered instead, while the RD15S-A remains suitable for overvoltage protection and loose voltage-clamping tasks.
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About Renesas Electronics
Renesas Electronics is a Japanese semiconductor manufacturer specializing in microcontrollers, analog products, and SoC solutions for automotive, industrial, and IoT applications.
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