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Renesas RKZ27TKG#P1
- Part No.:
- RKZ27TKG#P1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ27TKG#P1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:108,000
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Product details
Overview
RKZ27TKG#P1 from Renesas Electronics is a silicon planar Zener diode designed for surge absorption and voltage stabilization in low-power signal conditioning and protection circuits. It delivers a nominal Zener voltage of 27 V (min 25.1 V, max 28.9 V) at 2 mA test current, with dynamic resistance of 70 Ω and ESD capability of ±15 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω). Its ultra-small URP (SC-76A) package supports compact, high-density surface-mount designs in space-constrained consumer and industrial electronics.
For engineers reviewing the RKZ27TKG#P1 datasheet, RKZ27TKG#P1 pinout, RKZ27TKG#P1 application, or RKZ27TKG#P1 equivalent, key selection criteria include its 27 V stabilization tolerance, 200 mW power dissipation at 25°C, 150°C junction temperature rating, 2 mA Zener test current, and halogen-free, Pb-free URP packaging - all critical for ESD-hardened, thermally constrained, and RoHS-compliant designs.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to clamp transient overvoltages and regulate reference voltages. Its design centers on stable voltage stabilization under low-current conditions (IZ = 2 mA), with low dynamic impedance (70 Ω) ensuring minimal voltage deviation during load variation.
The device features a negative temperature coefficient below ~5 V and transitions toward positive above ~6 V; for RKZ27TKG#P1, γZ is approximately +0.04 %/°C (or +10.8 mV/°C), enabling predictable thermal drift in precision biasing applications. It is rated for non-repetitive surge reverse power up to 10 W for 100 ms pulses, per Fig.4 reference data.
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 accuracy in feedback loops. |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous DC power handling on standard PCB; derates linearly above 25°C (see Fig.3). |
| Dynamic Resistance (rd) | 70 Ω at IZ = 2 mA - determines output impedance in regulation mode; lower rd improves load regulation and noise rejection. |
| ESD Capability | ±15 kV (HBM, C = 150 pF, R = 330 Ω) - qualifies RKZ27TKG#P1 for direct interface with exposed I/O lines in consumer and industrial ports. |
| Junction Temperature (Tj) | 150°C maximum - enables operation in thermally demanding environments such as enclosed power supplies or automotive cabin modules. |
| Package | URP (SC-76A), 2.0 × 1.25 × 0.8 mm - ultra-compact surface-mount footprint compatible with 0402-class reflow processes and high-density PCB layouts. |
| Reverse Current (IR) | ≤2 μA at VR = 21.0 V - ensures low leakage in standby or battery-powered circuits where quiescent current must be minimized. |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A. Dimensions: 2.0 mm × 1.25 mm × 0.8 mm (L × W × H), mass ≈ 0.004 g. Cathode marked with band on terminal 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node in reverse-bias configuration; carries surge current during clamping events. |
| 2 | Anode | Connected to ground or lower-potential reference; completes conduction path during Zener breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & Pb-free construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020; eliminates hazardous substances without sacrificing surge robustness. |
| Ultra-small URP package | Enables placement in <1.5 mm pitch layouts; reduces board area by >40% vs. SOD-323, supporting miniaturized IoT sensors and wearables. |
| Taped delivery (3,000 pcs/reel) | Supports automated pick-and-place assembly with industry-standard 8 mm carrier tape; eliminates manual handling and contamination risk. |
| High ESD immunity (±15 kV) | Eliminates need for external TVS stages in Class A/B I/O protection; simplifies BOM and layout for USB, UART, and GPIO interfaces. |
| Stable Zener voltage tolerance | ±7% total variation (25.1–28.9 V) ensures predictable clamping across production lots and temperature range (−55 to +150°C). |
Applications
| USB Port ESD Protection | Industrial Sensor Reference |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines against contact discharge in portable instrumentation. IC Role / Device Role / Timing Role: Zener clamping diode placed between signal line and ground to shunt ESD transients before they reach the PHY IC. Use Value: RKZ27TKG#P1's ±15 kV HBM rating and 27 V standoff voltage prevent latch-up in 3.3 V USB transceivers while maintaining signal integrity. |
Use Scenario: Providing stable 27 V reference for analog front-end gain calibration in pressure transducers. IC Role / Device Role / Timing Role: Precision voltage reference element in a resistor-divider network feeding an ADC input. Use Value: Low 70 Ω dynamic resistance minimizes reference voltage shift under varying sensor excitation current, improving measurement repeatability. |
| Automotive Body Control Module | Smart Home Power Supply Clamp |
Use Scenario: Suppressing load-dump spikes on 12 V supply rails in door module ECUs. IC Role / Device Role / Timing Role: Primary surge absorber parallel to input capacitor, triggered during ISO 7637-2 Pulse 5a events. Use Value: 200 mW Pd and 150°C Tj allow sustained operation in under-hood ambient temperatures up to 105°C without derating. |
Use Scenario: Clamping overvoltage on 24 V AC/DC adapter outputs in Wi-Fi-enabled lighting controllers. IC Role / Device Role / Timing Role: Secondary voltage limiter downstream of primary switching regulator, guarding against feedback loop failure. Use Value: Tight 25.1–28.9 V VZ window ensures reliable shutdown of downstream logic before MOSFET gate oxide breakdown occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27LT1G (ON Semiconductor) | Same 27 V nominal VZ, but SOT-23 package (3.0 × 1.4 × 1.0 mm); 400 mW Pd; 100 Ω rd; ±30 kV ESD. | Larger footprint and higher power enable use in higher-energy surges, but incompatible with ultra-dense URP layouts. | Select when higher surge energy handling is required and board space permits SOT-23; not drop-in due to different pad geometry and thermal profile. |
| MMSZ5256B-TP (Micro Commercial Components) | SOD-123 package (3.7 × 1.6 × 1.1 mm); 27 V VZ (25.65–28.35 V); 500 mW Pd; 100 Ω rd; no published ESD rating. | Higher power rating suits 24 V rail decoupling, but lacks certified ESD performance and halogen-free compliance documentation. | Choose for cost-sensitive, non-ESD-critical 24 V stabilization where RoHS compliance is verified separately; requires layout redesign. |
Compared with BZX84-C27LT1G and MMSZ5256B-TP, RKZ27TKG#P1 offers the smallest footprint and guaranteed ±15 kV ESD rating in a halogen-free package - making it optimal for space- and reliability-constrained applications where PCB real estate and I/O hardening are prioritized over raw power handling.
Availability
RKZ27TKG#P1 is available at Aetrix Electronics and suitable for USB interface protection, industrial sensor reference circuits, automotive body control modules, smart home power supply clamping, and other applications requiring stable component supply with tight Zener voltage control and high ESD immunity.
Supply support for RKZ27TKG#P1 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 specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and enterprise systems.
The RKZ-KG Series was developed specifically for high-reliability surge absorption and precision voltage stabilization in compact, environmentally compliant surface-mount applications - targeting design needs in IoT edge nodes, industrial automation, and consumer electronics.
FAQ
What is the Zener voltage tolerance of RKZ27TKG#P1?
The RKZ27TKG#P1 has a specified Zener voltage range of 25.1 V to 28.9 V at IZ = 2 mA, representing a ±7% tolerance around the nominal 27 V rating. This tolerance is guaranteed across manufacturing lots and validated per Renesas REJ03G1512-0300 Rev.3.00 test conditions, ensuring consistent clamping behavior in production designs.
Does RKZ27TKG#P1 meet RoHS and halogen-free requirements?
Yes, RKZ27TKG#P1 is explicitly designated as a halogen-free and Pb-free part within the RKZ-KG P6 Series. It complies with EU RoHS Directive 2011/65/EU and satisfies JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for surface-mount assembly, as confirmed in the official Renesas datasheet REJ03G1512-0300.
What is the maximum junction temperature rating for RKZ27TKG#P1?
The RKZ27TKG#P1 has a maximum junction temperature (Tj) rating of 150°C, allowing reliable operation in high-ambient environments such as enclosed power supplies or automotive cabin modules. This rating is defined under absolute maximum conditions in the datasheet and supports continuous operation up to 105°C ambient when mounted on standard FR-4 PCB per derating curve (Fig.3).
Can RKZ27TKG#P1 be used for bidirectional ESD protection?
No - RKZ27TKG#P1 is a unidirectional Zener diode configured for reverse-bias clamping only. Its pinout (cathode/anode) and electrical characteristics are optimized for single-polarity voltage regulation and surge suppression. For bidirectional ESD protection, a dedicated TVS diode array (e.g., RCLAMP0524P) would be required instead of RKZ27TKG#P1.
What is the dynamic resistance of RKZ27TKG#P1 and why does it matter?
The dynamic resistance (rd) of RKZ27TKG#P1 is 70 Ω at IZ = 2 mA. This parameter quantifies how much the Zener voltage changes per unit change in current - lower rd means tighter regulation and better stability under varying load or temperature. In RKZ27TKG#P1, 70 Ω enables precise voltage referencing in sensor bias networks and predictable clamping in low-energy surge events.
RKZ27TKG#P1 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:
- -
RKZ27TKG#P1 FAQ
1.How can I place an order for RKZ27TKG#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ27TKG#P1 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 RKZ27TKG#P1 reliable?
The price and inventory of RKZ27TKG#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ27TKG#P1 is usually 5 days.
3.What payment methods are accepted for RKZ27TKG#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ27TKG#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ27TKG#P1?
RKZ27TKG#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ27TKG#P1 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 RKZ27TKG#P1?
For technical support, including RKZ27TKG#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ27TKG#P1 requirements.
6.How does Aetrix verify that RKZ27TKG#P1 is sourced from the original manufacturer or authorized distributors?
All RKZ27TKG#P1 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 RKZ27TKG#P1 meets industry standards.
7.What is the process for return or replacement of RKZ27TKG#P1?
All RKZ27TKG#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ27TKG#P1, 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 RKZ27TKG#P1 part is unused and in its original packaging.
Return procedure for RKZ27TKG#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ27TKG#P1 Tags
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