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Renesas RD2.0F(N)
- Part No.:
- RD2.0F(N)
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD2.0F(N).pdf
- Description:
- DIODE ZENER
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Inventory:9,428
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Product details
Overview
RD2.0F(N) from Renesas Electronics is a 1 W planar-type silicon Zener diode in DO-41 glass-sealed DHD package, with nominal zener voltage 2.0 V (B2 grade: 2.01–2.25 V), dynamic impedance ≤40 Ω at 40 mA, and negative temperature coefficient of −1.5 mV/°C - used for precision voltage reference and overvoltage clamping in low-voltage power rails.
For engineers reviewing the RD2.0F(N) datasheet, RD2.0F(N) pinout, RD2.0F(N) application, or RD2.0F(N) equivalent, this part serves as a standardized 2.0 V zener solution for voltage regulation, waveform limiting, and transient suppression in industrial control, sensor signal conditioning, and embedded power management circuits where tight tolerance and thermal stability at low voltage are required.
Technical Context
This device operates as a reverse-biased voltage-reference diode with a specified zener breakdown at 2.0 V under 40 mA test current. Its planar DHD structure enables reliable heat dissipation via dual heatsink leads and supports surge reverse power up to 400 W for 10 μs pulses.
The RD2.0F(N) exhibits a negative temperature coefficient (−1.5 mV/°C), indicating decreasing zener voltage with rising junction temperature - a key design consideration for stable biasing in ambient-variable environments. It is rated for junction temperatures up to 175°C and storage from −65°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.01–2.25 V at IZ = 40 mA - defines precise clamping threshold for low-voltage rail protection |
| Power Dissipation (P) | 1.0 W at TA = 25°C - sets continuous DC power limit; derates linearly above 25°C per Figure 1 |
| Dynamic Impedance (ZZ) | ≤40 Ω at IZ = 40 mA - ensures minimal voltage shift under load variation in regulation circuits |
| Reverse Current (IR) | ≤200 μA at VR = 0.5 V - guarantees low leakage before breakdown, critical for standby power integrity |
| Temperature Coefficient (γZ) | −1.5 mV/°C - quantifies voltage drift per degree; requires thermal compensation in precision references |
| Surge Reverse Power (PRSM) | 400 W (t = 10 μs) - enables robust transient suppression without failure in ESD or inductive kick scenarios |
| Junction Temperature (Tj) | 175°C maximum - determines maximum allowable power under thermal constraints in PCB layout |
Pinout & Package
RD2.0F(N) uses the JEDEC DO-41 axial glass package (3.0 mm diameter × 25 mm length) with cathode indicated by black band. The device has two terminals: anode and cathode - no internal circuitry or multi-pin functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias operation; carries forward current up to 200 mA |
| Cathode | Zener breakdown terminal | Marked with black band; connected to higher-potential node during regulation; sinks zener current |
Key Features
| Feature | Design Value |
|---|---|
| 1 W Planar Zener Structure | Enables stable voltage regulation with low noise and repeatable breakdown in compact DO-41 form factor |
| E24-Series Voltage Grading | Supports standardization across B1/B2/B3 tolerance bands - RD2.0F(N) delivers 2.0 V within ±5.6% (B2) |
| Dual Heatsink Diode (DHD) Construction | Improves thermal resistance and pulse power handling vs. conventional axial diodes - critical for surge absorption |
| Negative Temperature Coefficient | −1.5 mV/°C allows predictable drift modeling in temperature-sensitive analog front-ends |
| Low-Leakage Reverse Characteristic | 200 μA max at 0.5 V enables use in high-impedance bias networks without loading error |
Applications
| Industrial Power Monitoring | Sensor Signal Clipping |
|---|---|
Use Scenario: Monitoring 3.3 V or 5 V supply rails in PLC I/O modules using resistive divider + zener clamp. IC Role / Device Role / Timing Role: Zener voltage reference and overvoltage limiter protecting ADC input and microcontroller GPIO. Use Value: Prevents damage from line transients while maintaining <±1% regulation accuracy at 40 mA, compatible with standard 0805/1206 PCB footprints. |
Use Scenario: Conditioning analog output from pressure or temperature sensors subject to EMI-induced spikes. IC Role / Device Role / Timing Role: Bidirectional waveform clipper limiting signal swing to ±2.0 V before op-amp buffering. Use Value: Ensures sensor output stays within ADC full-scale range without distortion; 40 Ω dynamic impedance minimizes clipping hysteresis. |
| Embedded Microcontroller Reset Circuit | Surge Protection in RS-485 Transceivers |
Use Scenario: Generating clean 2.0 V reference for reset supervisor ICs (e.g., MAX809) in battery-powered edge devices. IC Role / Device Role / Timing Role: Stable voltage threshold generator enabling accurate brown-out detection at low VCC. Use Value: −1.5 mV/°C drift allows predictable reset threshold shift across −40°C to +85°C operating range. |
Use Scenario: Protecting RS-485 bus lines (A/B) against ESD and lightning-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Low-voltage clamping element in TVS-assisted protection stage, placed before transceiver inputs. Use Value: 400 W surge rating (10 μs) absorbs IEC 61000-4-2 Level 4 events without degradation; DO-41 package fits standard protection layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5221BS | Surface-mount SOD-123 package; 2.0 V nominal, 500 mW rating; ZZ = 100 Ω at 20 mA | Lower power and higher dynamic impedance - suitable only for signal-level clamping, not power rail regulation | Select when board space is constrained and surge immunity requirements are moderate (IEC 61000-4-2 Level 2). |
| Vishay SZ1SMA20A | DO-214AC package; 20 W peak pulse power; 2.0 V nominal; ZZ = 150 Ω at 50 mA | Higher surge capability but looser voltage tolerance (±5%) and higher ZZ - better for transient suppression than precision regulation | Select when primary need is high-energy surge absorption (e.g., 10/1000 μs waveform), not low-drift voltage reference. |
Compared with MMBZ5221BS and SZ1SMA20A, RD2.0F(N) uniquely balances 1 W continuous dissipation, 40 Ω dynamic impedance, and −1.5 mV/°C temperature coefficient in through-hole DO-41 - making it optimal for industrial power monitoring and reset circuits requiring both stability and ruggedness.
Availability
RD2.0F(N) is available at Aetrix Electronics and suitable for industrial power monitoring, sensor signal conditioning, embedded reset circuitry, and RS-485 surge protection requiring stable component supply and long-term lifecycle support.
Supply support for RD2.0F(N) 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 industrial, automotive, and infrastructure markets.
RD2.0F(N) belongs to Renesas' legacy planar zener diode family designed for standardized voltage reference and transient suppression in cost-sensitive, reliability-critical industrial systems.
FAQ
What is the exact zener voltage tolerance for RD2.0F(N)?
The RD2.0F(N) is specified in B2 grade with a zener voltage range of 2.01 V to 2.25 V at 40 mA test current, corresponding to ±5.6% tolerance around the nominal 2.0 V value. This grading follows the E24 series and is verified per the September 2006 datasheet D13936EJ5V0DS. RD2.0F(N) does not support tighter tolerances such as B1 (±3.5%) or B3 (±6.3%) unless explicitly ordered as RD2.0F(N)B1 or RD2.0F(N)B3.
Can RD2.0F(N) be used in surface-mount designs?
No - RD2.0F(N) is exclusively packaged in the through-hole DO-41 axial glass case with 25 mm lead length and 3.0 mm body diameter. It lacks SMD variants. For surface-mount equivalents, consider ON Semiconductor's MMBZ5221BS (SOD-123) or Diodes Inc.'s BZX84-C2V0 (SOT-23), though these differ in power rating, dynamic impedance, and temperature coefficient versus RD2.0F(N).
What is the maximum surge current RD2.0F(N) can withstand?
RD2.0F(N) supports a surge reverse power of 400 W for 10 μs pulses (non-repetitive), which translates to approximately 6.3 A peak surge current at 2.0 V clamping level. This is derived from PRSM = VZ × ISM. Exceeding this limit risks irreversible junction damage, and repeated surges must respect thermal recovery time per Figure 8 transient impedance curves.
Does RD2.0F(N) meet RoHS requirements?
Yes - RD2.0F(N) complies with EU RoHS Directive 2011/65/EU as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits. Lead-free soldering is supported up to 260°C peak reflow temperature per JEDEC J-STD-020.
How does the −1.5 mV/°C temperature coefficient affect circuit performance?
The −1.5 mV/°C coefficient means RD2.0F(N)'s zener voltage decreases by 1.5 mV for every 1°C rise in junction temperature. Over a 100°C range (e.g., −25°C to +75°C), this results in ~150 mV total drift - a critical factor in precision references. Designers must either thermally stabilize the device or compensate using complementary components; RD2.0F(N) is not recommended for applications requiring <±10 mV total drift without mitigation.
RD2.0F(N) 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:
- -
RD2.0F(N) FAQ
1.How can I place an order for RD2.0F(N) through Aetrix?
Please submit a Request for Quotation (RFQ) for RD2.0F(N) 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 RD2.0F(N) reliable?
The price and inventory of RD2.0F(N) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD2.0F(N) is usually 5 days.
3.What payment methods are accepted for RD2.0F(N)?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD2.0F(N) transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD2.0F(N)?
RD2.0F(N) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD2.0F(N) 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 RD2.0F(N)?
For technical support, including RD2.0F(N) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD2.0F(N) requirements.
6.How does Aetrix verify that RD2.0F(N) is sourced from the original manufacturer or authorized distributors?
All RD2.0F(N) 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 RD2.0F(N) meets industry standards.
7.What is the process for return or replacement of RD2.0F(N)?
All RD2.0F(N) units undergo pre-shipment inspection (PSI). If there is an issue with RD2.0F(N), 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 RD2.0F(N) part is unused and in its original packaging.
Return procedure for RD2.0F(N):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD2.0F(N) Tags
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