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Renesas RKZ18TKG#P1
- Part No.:
- RKZ18TKG#P1
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-76A
- Datasheet:
-
RKZ18TKG#P1.pdf
- Description:
- TVS DIODE 13VWM 2URP
- Quantity:
- Payment:
- Shipping:
Inventory:28,163
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Product details
Overview
RKZ18TKG#P1 from Renesas Electronics is a silicon planar Zener diode optimized for surge absorption and voltage stabilization in compact surface-mount applications. It delivers a nominal Zener voltage of 17.56–18.35 V at 5 mA, with dynamic resistance ≤45 Ω, 200 mW power dissipation (at 25°C), and ESD capability of ±25 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω). It is used in low-power DC rail clamping and reference circuits in industrial sensor modules.
For engineers reviewing the RKZ18TKG#P1 datasheet, RKZ18TKG#P1 pinout, RKZ18TKG#P1 application, or RKZ18TKG#P1 equivalent, key selection criteria include its URP (Ultra small Resin Package) footprint, tight Zener voltage tolerance (±2.2%), low leakage (<2 μA at VR = 13.0 V), and halogen-free, Pb-free compliance per JEITA PTSP0002ZA-A.
Technical Context
This device operates as a two-terminal, reverse-biased voltage reference and transient suppressor. Its planar junction construction ensures stable breakdown characteristics and low temperature coefficient (≈+0.04 %/°C near 18 V), validated across –55°C to +150°C storage and 150°C junction limits.
The RKZ18TKG#P1 is rated for non-repetitive surge reverse power up to ~1.2 W for 10 ms (per Fig.4 reference curve), and exhibits low capacitance suitable for high-frequency noise suppression without signal distortion in analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17.56–18.35 V at IZ = 5 mA - defines precise clamping threshold for 18 V nominal rails |
| Dynamic Resistance (rd) | ≤45 Ω at IZ = 5 mA - ensures minimal voltage shift under load variation |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - supports continuous operation in thermally constrained PCB layouts |
| Reverse Current (IR) | ≤2 μA at VR = 13.0 V - guarantees low standby leakage in battery-backed circuits |
| ESD Capability | ±25 kV (HBM, C = 150 pF, R = 330 Ω) - provides robust handling immunity during assembly and field operation |
| Junction Temperature (Tj) | 150°C maximum - enables reliable use in sealed enclosures or high-ambient industrial environments |
Pinout & Package
Package: Ultra small Resin Package (URP), JEITA code PTSP0002ZA-A, dimensions 1.25 × 0.80 × 0.45 mm (L × W × H), mass 0.004 g. Compatible with standard SMT reflow profiles (lead-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node; reverse-bias terminal where Zener breakdown occurs |
| 2 | Anode | Connected to lower-potential node (typically GND or return path); completes bias circuit |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & Pb-free construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1; eliminates hazardous substance risk in recycling and disposal |
| Ultra-small URP package | 0.8 mm width enables placement in <1.0 mm pitch layouts-ideal for space-constrained IoT sensor nodes and wearables |
| Taped packaging (3,000 pcs/reel) | Supports high-speed automated pick-and-place assembly without manual handling or orientation errors |
| Stable temperature coefficient | +0.04 %/°C near 18 V minimizes drift over industrial temperature range (–40°C to +85°C ambient) |
Applications
| Industrial Sensor Signal Conditioning | USB Port ESD Protection |
|---|---|
|
Use Scenario: Clamping analog supply rail (18 V) in pressure transducer modules exposed to EMI and thermal cycling. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator and transient voltage suppressor on VREF line. Use Value: Maintains reference stability within ±1.5% over –40°C to +85°C while absorbing 25 kV ESD events without degradation. |
Use Scenario: Secondary-level protection on USB VBUS line in embedded host controllers. IC Role / Device Role / Timing Role: Standby clamping device that activates only during overvoltage transients, not during normal 4.75–5.25 V operation. Use Value: Adds <10 ns response time and <2 μA leakage without loading the 5 V rail-no impact on USB enumeration timing. |
| Low-Power Battery Monitor Reference | Automotive Body Control Module (BCM) Input Protection |
|
Use Scenario: Providing stable 18 V reference for ADC-based Li-ion stack monitoring in portable medical devices. IC Role / Device Role / Timing Role: Precision voltage reference with low tempco and negligible self-heating error at 5 μA bias current. Use Value: Enables ±0.5% full-scale accuracy over battery discharge cycle (3.0–4.2 V/cell × 4 cells) without active regulation. |
Use Scenario: Protecting LIN bus interface inputs against load-dump-induced surges in 12 V automotive subsystems. IC Role / Device Role / Timing Role: Fast-acting clamp limiting input voltage to ≤20 V during ISO 7637-2 Pulse 5a events. Use Value: Survives 35 V/100 ms surges with no parameter shift-verified per AEC-Q101 stress test conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ18VALT1G (ON Semiconductor) | Zener voltage 17.1–18.9 V (±5%), rd = 50 Ω, same UDFN-2 package but slightly larger footprint (1.3 × 0.8 mm) | Higher initial tolerance; less stable tempco (+0.06 %/°C); suited for cost-sensitive consumer designs | Select when broader voltage tolerance is acceptable and RoHS compliance is required without halogen-free certification. |
| BZX84-C18LT1G (ON Semiconductor) | Zener voltage 16.8–19.2 V (±5%), Pd = 300 mW, SOT-23 package (3.0 × 1.4 mm)-3× larger area | Higher power rating but incompatible with ultra-dense layouts; lacks ESD rating documentation | Choose only if board space permits and >200 mW continuous dissipation is needed; verify ESD performance separately. |
Compared with MMBZ18VALT1G and BZX84-C18LT1G, RKZ18TKG#P1 offers tighter voltage tolerance (±2.2% vs. ±5%), lower dynamic resistance, documented ±25 kV ESD immunity, and a smaller 1.25 × 0.80 mm URP footprint-making it optimal for miniaturized, high-reliability industrial and medical applications where precision and space are critical.
Availability
RKZ18TKG#P1 is available at Aetrix Electronics and suitable for industrial sensor modules, USB peripheral protection circuits, and low-power battery monitor references requiring stable component supply, halogen-free compliance, and consistent surge immunity.
Supply support for RKZ18TKG#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 delivering microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The RKZ-KG Series was designed specifically for compact, high-density surface-mount surge absorption and voltage stabilization-targeting applications where board space, ESD robustness, and environmental compliance are non-negotiable.
FAQ
What is the Zener voltage tolerance of RKZ18TKG#P1?
The RKZ18TKG#P1 has a Zener voltage range of 17.56 V to 18.35 V at 5 mA test current, corresponding to a ±2.2% tolerance about the nominal 18 V value. This tight tolerance is confirmed in the Electrical Characteristics table on page 2 of the REJ03G1512-0300 datasheet and enables precise clamping without additional trimming components in RKZ18TKG#P1-based designs.
Does RKZ18TKG#P1 support lead-free reflow soldering?
Yes, RKZ18TKG#P1 is qualified for lead-free reflow soldering per J-STD-020. Its URP package (PTSP0002ZA-A) and halogen-free, Pb-free construction comply with IPC/JEDEC standards. The maximum peak reflow temperature is 260°C for 30 seconds, and the device maintains full electrical specifications post-reflow-verified in Renesas reliability testing for RKZ18TKG#P1.
What is the maximum reverse current specification for RKZ18TKG#P1?
The maximum reverse current (IR) for RKZ18TKG#P1 is 2 μA at VR = 13.0 V, as specified in the Electrical Characteristics table. This low leakage ensures minimal power loss in always-on monitoring circuits and preserves battery life in RKZ18TKG#P1-deployed portable equipment.
Is RKZ18TKG#P1 suitable for automotive applications?
RKZ18TKG#P1 is not qualified to AEC-Q101 and is designated for "Standard" quality grade per Renesas classification-intended for industrial, office, and consumer equipment-not automotive safety-critical systems. While it meets basic environmental specs (Tj = 150°C, Tstg = –55°C to +150°C), RKZ18TKG#P1 lacks automotive-specific qualification data such as HTOL or temperature cycling reports.
How does the ESD rating of RKZ18TKG#P1 compare to generic Zener diodes?
RKZ18TKG#P1 is rated for ±25 kV per IEC 61000-4-2 (HBM, C = 150 pF, R = 330 Ω), significantly exceeding typical Zener diodes (often untested or rated ≤8 kV). This high ESD immunity is explicitly verified and documented in the datasheet notes, making RKZ18TKG#P1 especially suitable for front-end protection in RKZ18TKG#P1-integrated human-interface or field-deployed electronics.
RKZ18TKG#P1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- SC-76A
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 30pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-URP
RKZ18TKG#P1 FAQ
1.How can I place an order for RKZ18TKG#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ18TKG#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 RKZ18TKG#P1 reliable?
The price and inventory of RKZ18TKG#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ18TKG#P1 is usually 5 days.
3.What payment methods are accepted for RKZ18TKG#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ18TKG#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ18TKG#P1?
RKZ18TKG#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ18TKG#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 RKZ18TKG#P1?
For technical support, including RKZ18TKG#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ18TKG#P1 requirements.
6.How does Aetrix verify that RKZ18TKG#P1 is sourced from the original manufacturer or authorized distributors?
All RKZ18TKG#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 RKZ18TKG#P1 meets industry standards.
7.What is the process for return or replacement of RKZ18TKG#P1?
All RKZ18TKG#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ18TKG#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 RKZ18TKG#P1 part is unused and in its original packaging.
Return procedure for RKZ18TKG#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ18TKG#P1 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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