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Renesas RKZ27DJKU#P6
- Part No.:
- RKZ27DJKU#P6
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ27DJKU#P6.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:76,000
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Product details
Overview
RKZ27DJKU#P6 from Renesas Electronics is a silicon planar Zener diode designed for surge absorption and voltage stabilization in low-power signal and supply rail protection circuits, with a nominal Zener voltage of 27 V (25.1–28.9 V), 200 mW power dissipation, and ultra-small URP (SC-76A) surface-mount package.
For engineers reviewing the RKZ27DJKU#P6 datasheet, RKZ27DJKU#P6 pinout, RKZ27DJKU#P6 application, or RKZ27DJKU#P6 equivalent, this device serves as a halogen-free, Pb-free Zener solution for compact ESD clamping, reference regulation, and transient overvoltage suppression in consumer, industrial, and communication interface circuits.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage under defined current conditions. Its dynamic resistance of 70 Ω at IZ = 2 mA ensures predictable clamping behavior during fast transients.
Rated for 150 °C junction temperature and –55 to +150 °C storage range, it supports operation in thermally constrained PCB environments. ESD capability is rated at ±30 kV (HBM, C = 150 pF, R = 330 Ω), confirming robustness against human-body-model electrostatic discharge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.1–28.9 V at IZ = 2 mA - defines clamping threshold for overvoltage protection and reference stability |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - limits continuous thermal load on small URP footprint |
| Dynamic Resistance (rd) | 70 Ω at IZ = 2 mA - determines voltage variation under changing load current |
| Reverse Current (IR) | ≤2 μA at VR = 21 V - ensures low leakage in standby or high-impedance bias networks |
| ESD Capability | ±30 kV HBM - provides intrinsic immunity to common handling and interface-level ESD events |
| Junction Temperature (Tj) | 150 °C maximum - enables reliable operation in elevated ambient or power-dense layouts |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A - 2-pin surface-mount package optimized for high-density PCB assembly and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node in reverse-bias configuration; carries surge current during clamping |
| 2 | Anode | Connected to lower-potential node (e.g., ground or return path); completes conduction path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & Pb-free construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level (MSL) requirements |
| Ultra-small URP package (1.25 × 0.80 × 0.45 mm) | Reduces PCB area by >40% vs. SOD-323; supports 0201-class layout density |
| Taped and reel packaging (3,000 pcs/reel) | Enables direct integration into high-speed pick-and-place manufacturing lines without manual handling |
| Stable Zener voltage temperature coefficient | Near-zero drift near 27 V (per Fig.2), minimizing reference error across –40 to +85 °C operating range |
Applications
| USB Interface Protection | Microcontroller I/O Clamp |
|---|---|
Use Scenario: Protects USB D+/D− lines from ESD and cable-induced surges in portable peripherals. IC Role / Device Role / Timing Role: Zener clamp placed between data line and ground to shunt transients before they reach PHY IC input stages. Use Value: Limits peak voltage to ≤30 V during ±30 kV HBM events, preserving signal integrity and preventing latch-up in USB transceivers. |
Use Scenario: Shields GPIO pins of MCU or FPGA from accidental overvoltage during board bring-up or field service. IC Role / Device Role / Timing Role: Low-leakage Zener connected anode-to-ground, cathode-to-I/O pin to clamp positive excursions beyond VDD + 0.3 V. Use Value: Prevents damage from 12 V miswiring or hot-plug spikes while drawing <2 μA at 21 V reverse bias. |
| Low-Power Reference Regulator | Surge-Protected Sensor Supply |
Use Scenario: Provides stable 27 V reference for precision ADC biasing or analog front-end calibration in battery-powered instruments. IC Role / Device Role / Timing Role: Zener operated at 2 mA with series resistor to generate low-noise, temperature-stable reference voltage. Use Value: Delivers ±1.9 V tolerance (25.1–28.9 V) and 70 Ω dynamic impedance for <0.5% output variation under 100 μA load changes. |
Use Scenario: Stabilizes 24 V sensor supply rails exposed to inductive switching noise in industrial automation modules. IC Role / Device Role / Timing Role: Parallel-connected Zener absorbs repetitive 100 ns–1 μs transients from solenoid drivers or relay coils. Use Value: Handles non-repetitive surge power up to 1.0 W for 100 ms (per Fig.4), extending system MTBF in harsh electromagnetic environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C27 (ON Semiconductor) | Through-hole DO-35 package; 500 mW rating; ±5% VZ tolerance (25.65–28.35 V) | Requires PCB real estate and wave-solder process; less suitable for high-density SMT designs | Select when legacy through-hole assembly or higher continuous power margin is required. |
| MMSZ5256B (Diodes Inc.) | SOD-123 package; 500 mW rating; tighter ±5% VZ (25.65–28.35 V); 30 Ω rd at 20 mA | Higher power rating but larger footprint (2.7 × 1.4 mm vs. URP's 1.25 × 0.80 mm); different thermal derating curve | Choose for higher surge energy handling where board space permits and tighter VZ tolerance is critical. |
Compared with BZX55-C27 and MMSZ5256B, RKZ27DJKU#P6 offers the smallest PCB footprint and halogen-free compliance out-of-box, making it optimal for space-constrained, environmentally regulated designs-though its 200 mW rating requires careful thermal design versus higher-power alternatives.
Availability
RKZ27DJKU#P6 is available at Aetrix Electronics and suitable for USB interface protection, microcontroller I/O clamping, low-power reference regulation, and surge-protected sensor supply applications requiring stable component supply, RoHS compliance, and high-volume SMT manufacturability.
Supply support for RKZ27DJKU#P6 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and timing solutions for automotive, industrial, and IoT systems.
The RKZ-KG Series is part of Renesas' discrete protection portfolio, engineered specifically for compact, high-reliability voltage stabilization and surge suppression in consumer and industrial electronics.
FAQ
What is the Zener voltage tolerance of RKZ27DJKU#P6?
The RKZ27DJKU#P6 has a specified Zener voltage range of 25.1 V to 28.9 V at IZ = 2 mA, representing a ±7% tolerance band around the nominal 27 V rating. This wider tolerance reflects its optimization for surge absorption rather than precision reference use, and is confirmed in the Electrical Characteristics table on page 2 of REJ03G1512-0300 Rev.3.00.
Is RKZ27DJKU#P6 compatible with lead-free reflow soldering processes?
Yes, RKZ27DJKU#P6 is qualified for lead-free reflow soldering per JEDEC J-STD-020. Its URP package and halogen-free/Pb-free construction support peak reflow temperatures up to 260 °C. The device is supplied on tape-and-reel (3,000 pcs/reel) and marked "27•" per the Mark Code table on page 3 of the datasheet.
How does the dynamic resistance of RKZ27DJKU#P6 affect its clamping performance?
The RKZ27DJKU#P6 exhibits 70 Ω dynamic resistance at IZ = 2 mA, meaning a 1 mA change in Zener current causes approximately 70 mV shift in clamped voltage. This value directly impacts voltage stability during transient events and must be factored into series resistor selection to ensure sufficient current margin under worst-case surge conditions.
Can RKZ27DJKU#P6 be used in place of a TVS diode for ESD protection?
RKZ27DJKU#P6 provides ±30 kV HBM ESD capability and functions as a low-capacitance clamping device, but it is not rated for IEC 61000-4-2 contact or air discharge. For full-system ESD compliance, it should be paired with a dedicated TVS or used in pre-regulation stages where its 200 mW power limit and slower response versus avalanche TVS devices are acceptable.
What is the thermal derating behavior of RKZ27DJKU#P6 above 25°C ambient?
RKZ27DJKU#P6 follows standard thermal derating: power dissipation decreases linearly from 200 mW at 25°C to zero at 150°C junction temperature. Per Figure 3 in the datasheet, its usable Pd drops to ~120 mW at 70°C ambient and ~60 mW at 100°C ambient-requiring careful PCB copper area allocation and airflow consideration in enclosed enclosures.
RKZ27DJKU#P6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
RKZ27DJKU#P6 FAQ
1.How can I place an order for RKZ27DJKU#P6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ27DJKU#P6 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 RKZ27DJKU#P6 reliable?
The price and inventory of RKZ27DJKU#P6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ27DJKU#P6 is usually 5 days.
3.What payment methods are accepted for RKZ27DJKU#P6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ27DJKU#P6 transactions.
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4.How is shipping managed for RKZ27DJKU#P6?
RKZ27DJKU#P6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ27DJKU#P6 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 RKZ27DJKU#P6?
For technical support, including RKZ27DJKU#P6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ27DJKU#P6 requirements.
6.How does Aetrix verify that RKZ27DJKU#P6 is sourced from the original manufacturer or authorized distributors?
All RKZ27DJKU#P6 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 RKZ27DJKU#P6 meets industry standards.
7.What is the process for return or replacement of RKZ27DJKU#P6?
All RKZ27DJKU#P6 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ27DJKU#P6, 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 RKZ27DJKU#P6 part is unused and in its original packaging.
Return procedure for RKZ27DJKU#P6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ27DJKU#P6 Tags
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