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Renesas RKZ9.1BKV#P1
- Part No.:
- RKZ9.1BKV#P1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ9.1BKV#P1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:114,000
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Product details
Overview
RKZ9.1BKV#P1 from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power analog and power-supply feedback circuits, with a nominal Zener voltage of 9.1 V (8.56–9.55 V), 700 mW power dissipation, and 30 Ω dynamic resistance at 2 mA test current - deployed in compact SRP-F surface-mount packages for voltage reference and overvoltage protection in industrial sensor interfaces.
For engineers reviewing the RKZ9.1BKV#P1 datasheet, RKZ9.1BKV#P1 pinout, RKZ9.1BKV#P1 application, or RKZ9.1BKV#P1 equivalent, this device serves as a stable, ESD-hardened (±30 kV per IEC 61000-4-2) voltage clamp for 5–12 V rail stabilization, requiring verification of thermal derating above 25°C ambient and compatibility with 10 × 10 mm solder land layouts on FR-4 or glass-epoxy PCBs.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its planar junction construction ensures tight VZ tolerance (±5.5% at 25°C), low temperature coefficient (≈+0.04 %/°C near 9.1 V), and predictable dynamic impedance behavior below 30 Ω.
The SRP-F flat-lead package enables high-density mounting while supporting automated tape-and-reel handling (3,000 pcs/reel). Thermal performance is defined relative to a standardized 50 × 50 mm glass-epoxy board with 10 × 10 mm copper land, limiting maximum junction temperature to 150°C and storage range to –55 to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.56–9.55 V at IZ = 2 mA - defines usable regulation window for 9 V nominal supply rails |
| Power Dissipation (Pd) | 700 mW at Ta = 25°C - sets max continuous DC power before thermal shutdown on standard PCB layout |
| Dynamic Resistance (rd) | 30 Ω max at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | 2 µA max at VR = 6 V - ensures low leakage in standby or high-impedance bias networks |
| ESD Capability | ±30 kV (HBM, C = 150 pF, R = 330 Ω) - supports robustness against human-body-model electrostatic discharge events |
| Junction Temperature (Tj) | 150°C max - constrains operating ambient when mounted on specified 50 × 50 mm board with 10 × 10 mm pad |
Pinout & Package
Package: SRP-F (Small Resin Package Flat lead type), JEITA code LP, Renesas code PWSF0002ZB-A - 2-pin surface-mount package with cathode-marked top-side laser marking ('9 ⋅ 1'), 3.3 mm × 1.6 mm footprint, 0.9 mm height, and 0.6 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential reference; forward direction blocked during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery (3,000 pcs/reel) | Enables automated SMT placement without manual handling or static exposure |
| SRP-F flat-lead package | Reduces PCB area by >40% vs. traditional DO-35; supports 0.6 mm pitch fine-pitch routing |
| Low dynamic resistance (30 Ω) | Minimizes output voltage shift under ±1 mA load variation in feedback loops |
| High ESD immunity (±30 kV HBM) | Eliminates need for external TVS in cost-sensitive consumer-grade I/O protection |
| Stable tempco near zero crossing | Temperature coefficient ≈ +0.04 %/°C minimizes drift in 9 V reference over –25 to +85°C |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Feedback |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity transmitters. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 9.1 V bias for op-amp gain-setting network. Use Value: Tight VZ tolerance (±5.5%) and low rd ensure <±2 LSB error contribution across 0–70°C operating range. |
Use Scenario: Clamping auxiliary 9 V rail in USB-C PD sink controller evaluation boards. IC Role / Device Role / Timing Role: Overvoltage protection element limiting VBUS-derived 9 V supply to safe level during transient surges. Use Value: 30 kV HBM rating prevents latch-up during lab-level ESD testing without added protection circuitry. |
| Programmable Logic Controller I/O Module | Automotive Body Control Unit (Non-Safety) |
|
Use Scenario: Regulating 9 V logic supply for isolated CAN transceiver biasing in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Constant-voltage regulator maintaining stable bias for optocoupler LED drivers. Use Value: 700 mW Pd supports continuous operation at 85°C ambient with minimal thermal margin loss. |
Use Scenario: Providing reference voltage for interior lighting dimming PWM comparator in BCM modules. IC Role / Device Role / Timing Role: Precision voltage clamp ensuring consistent threshold detection across battery voltage swings (9–16 V). Use Value: Low leakage (<2 µA at 6 V) avoids loading 100 kΩ divider networks used in analog sensing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C9V1 (Nexperia) | Same 9.1 V nominal VZ, but SOT-23 package (smaller footprint), 300 mW Pd, 60 Ω rd | Limited to lower-power biasing due to reduced thermal mass; unsuitable for >150 mW continuous dissipation | Select when board space is critical and power demand stays below 150 mW |
| MMBZ5240BLT1G (ON Semiconductor) | 9.1 V VZ, SOT-23, 350 mW Pd, 30 Ω rd, but only ±2 kV HBM ESD rating | Requires external ESD protection in noisy environments; not drop-in for unshielded industrial I/O | Choose only in benign EMI environments where external TVS is already present |
Compared with BZX84-C9V1 and MMBZ5240BLT1G, RKZ9.1BKV#P1 delivers higher power handling (700 mW), superior ESD robustness (±30 kV), and tighter VZ tolerance - making it optimal for industrial-grade voltage references where thermal stability and surge immunity are design-critical.
Availability
RKZ9.1BKV#P1 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery feedback, and programmable logic controller I/O modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for RKZ9.1BKV#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 infrastructure markets.
The RKZ-KV Series is part of Renesas' discrete Zener portfolio engineered for high-stability voltage regulation in compact SMT designs - targeting cost-sensitive yet reliability-demanding applications like sensor interfaces and power-supply monitoring.
FAQ
What is the Zener voltage tolerance of RKZ9.1BKV#P1 at 25°C?
The RKZ9.1BKV#P1 has a Zener voltage range of 8.56 V to 9.55 V at IZ = 2 mA and Ta = 25°C, corresponding to a ±5.5% tolerance about the nominal 9.1 V rating. This specification is verified per the REJ03G1700-0100 datasheet and applies strictly under the stated test conditions - no extrapolation to other currents or temperatures is supported by the published data.
Does RKZ9.1BKV#P1 support automatic optical inspection (AOI) after reflow?
Yes, RKZ9.1BKV#P1 features laser-marked cathode identification ('9 ⋅ 1') on the top surface of the SRP-F package, enabling reliable AOI detection of polarity and placement accuracy. The flat-lead geometry and consistent marking contrast meet IPC-A-610 Class 2 requirements for automated post-reflow verification in high-volume manufacturing.
Can RKZ9.1BKV#P1 be used in place of a 9 V battery replacement circuit?
RKZ9.1BKV#P1 is not intended as a standalone battery replacement. It functions only as a shunt voltage regulator and requires a series current-limiting resistor to operate safely. In a 9 V battery emulation circuit, RKZ9.1BKV#P1 would serve as the voltage reference element - but system-level design must account for its 2 µA leakage, 30 Ω dynamic resistance, and thermal limits under sustained load.
What is the maximum allowable ambient temperature for RKZ9.1BKV#P1 at full 700 mW dissipation?
RKZ9.1BKV#P1 achieves its rated 700 mW power dissipation only at Ta = 25°C on a defined 50 × 50 mm glass-epoxy board with 10 × 10 mm copper land. Derating begins linearly above 25°C, reaching zero dissipation at approximately 125°C ambient - meaning sustained 700 mW operation is not feasible above room temperature without active cooling or enhanced PCB copper area.
Is RKZ9.1BKV#P1 compliant with RoHS and REACH regulations?
Yes, RKZ9.1BKV#P1 is RoHS-compliant (lead-free terminations, homogeneous material restrictions met) and REACH-conformant, as confirmed by Renesas Electronics' official environmental compliance documentation. The SRP-F package uses halogen-free molding compound and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), allowing unlimited floor life before reflow.
RKZ9.1BKV#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:
- -
RKZ9.1BKV#P1 FAQ
1.How can I place an order for RKZ9.1BKV#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ9.1BKV#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 RKZ9.1BKV#P1 reliable?
The price and inventory of RKZ9.1BKV#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ9.1BKV#P1 is usually 5 days.
3.What payment methods are accepted for RKZ9.1BKV#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ9.1BKV#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ9.1BKV#P1?
RKZ9.1BKV#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ9.1BKV#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 RKZ9.1BKV#P1?
For technical support, including RKZ9.1BKV#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ9.1BKV#P1 requirements.
6.How does Aetrix verify that RKZ9.1BKV#P1 is sourced from the original manufacturer or authorized distributors?
All RKZ9.1BKV#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 RKZ9.1BKV#P1 meets industry standards.
7.What is the process for return or replacement of RKZ9.1BKV#P1?
All RKZ9.1BKV#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ9.1BKV#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 RKZ9.1BKV#P1 part is unused and in its original packaging.
Return procedure for RKZ9.1BKV#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ9.1BKV#P1 Tags
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