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Renesas RD10F-T7
- Part No.:
- RD10F-T7
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD10F-T7.pdf
- Description:
- DIODE ZENER
- Quantity:
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- Shipping:
Inventory:2,500
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Product details
Overview
RD10F-T7 from Renesas Electronics is a 1 W planar silicon zener diode in DO-41 glass-sealed DHD package, with nominal zener voltage 10 V (B3 grade: 9.83–10.40 V), dynamic impedance ≤6 Ω at 40 mA, and reverse current ≤10 μA at 7.0 V. It serves as a precision voltage reference and overvoltage clamp in power supply regulation and signal conditioning circuits.
For engineers reviewing the RD10F-T7 datasheet, RD10F-T7 pinout, RD10F-T7 application, or RD10F-T7 equivalent, this page delivers verified electrical specs, thermal derating curves, temperature coefficient behavior, and direct replacement guidance for industrial power management and analog protection design.
Technical Context
The RD10F-T7 operates as a two-terminal voltage-regulating device relying on controlled reverse-biased avalanche breakdown. Its zener voltage is specified at test current IZ = 40 mA, with dynamic impedance measured via superimposed AC signal per JEDEC JESD24-A.
Thermal performance follows a planar DHD structure with double heatsink geometry, enabling 1 W continuous dissipation at TA = 25°C and junction temperature limit of 175°C. The zener voltage temperature coefficient is +6.5 mV/°C (typical), indicating positive drift above 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.83–10.40 V at IZ = 40 mA - defines stable regulation window under nominal bias |
| Dynamic Impedance (ZZ) | ≤6 Ω at IZ = 40 mA - ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | ≤10 μA at VR = 7.0 V - guarantees low leakage in standby or clamping-off state |
| Power Dissipation (P) | 1.0 W at TA = 25°C - sets maximum continuous DC power handling before thermal derating |
| Junction Temperature (Tj) | 175°C - determines upper thermal limit for reliability in enclosed or high-ambient environments |
| Zener Temp. Coefficient (γZ) | +6.5 mV/°C (typ.) - quantifies voltage drift magnitude per degree Celsius rise |
| Surge Reverse Power (PRSM) | 400 W (t = 10 μs) - supports transient overvoltage suppression without failure |
Pinout & Package
RD10F-T7 uses a DO-41 axial glass package with cathode indicated by black band. Terminals are unidirectional: anode (unmarked end) and cathode (banded end).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to lower potential node in reverse-bias configuration; carries forward current up to 200 mA |
| Cathode | Zener breakdown terminal / reference output | Banded end; held at regulated VZ when reverse-biased; source of stable reference voltage |
Key Features
| Feature | Design Value |
|---|---|
| 1 W Planar Zener Structure | Enables stable regulation with low thermal resistance and repeatable breakdown characteristics |
| E24 Voltage Series Compliance | Supports standardized BOM selection across common reference voltages (2–82 V range) |
| DO-41 Glass Sealing | Provides hermetic moisture barrier and mechanical robustness for industrial ambient exposure |
| B3 Voltage Grade Tight Tolerance | ±2.1% tolerance (9.83–10.40 V) enables precise threshold setting without external trimming |
| Positive Temperature Coefficient | +6.5 mV/°C allows predictable compensation in temperature-sensitive analog circuits |
Applications
| Voltage Reference Circuit | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stable 10 V reference for ADC biasing, op-amp feedback, or sensor excitation in industrial PLC modules. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing fixed potential independent of supply ripple. Use Value: Delivers ±2.1% accuracy and <6 Ω dynamic impedance to maintain reference stability under 10–40 mA load variations. |
Use Scenario: Input-stage surge clamp protecting microcontroller GPIOs or analog front-ends from ESD or inductive kickback. IC Role / Device Role / Timing Role: Fast-acting shunt limiter that conducts only above 10 V, diverting excess energy to ground. Use Value: Withstands 400 W transient surges (10 μs) while holding clamped voltage within 10.4 V, preventing downstream damage. |
| Waveform Limiting Circuit | Constant-Current Bias Generator |
Use Scenario: Audio signal amplitude limiting in consumer amplifier pre-stages to prevent clipping distortion. IC Role / Device Role / Timing Role: Symmetric dual-zener clipper (with companion diode) shaping AC waveform peaks. Use Value: Sharp 10 V breakdown knee and low ZZ ensure clean, repeatable clipping thresholds across temperature. |
Use Scenario: LED driver bias network where constant current is derived from zener-regulated voltage drop across series resistor. IC Role / Device Role / Timing Role: Voltage-setting element establishing fixed VBE or gate drive level for transistor-based current sources. Use Value: 1 W rating supports sustained 40 mA operation, enabling robust bias generation without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | Zener voltage 10 V (±5%), ZZ ≤20 Ω at 25 mA, P = 1 W, DO-41 package | Wider voltage tolerance and higher dynamic impedance reduce precision in reference use | Acceptable for non-critical clamping where cost is prioritized over regulation accuracy |
| BZX55C10 | Zener voltage 10 V (±5%), ZZ ≤20 Ω at 5 mA, P = 500 mW, DO-35 package | Lower power rating and smaller package limit surge handling and thermal margin | Suitable for low-power signal-level limiting but not for 1 W continuous or high-energy transients |
Compared with RD10F-T7, both 1N4740A and BZX55C10 offer broader availability but trade off tighter voltage tolerance, lower dynamic impedance, and higher surge capability-making RD10F-T7 preferable for industrial-grade voltage references requiring long-term stability and thermal resilience.
Availability
RD10F-T7 is available at Aetrix Electronics and suitable for industrial power supplies, analog sensor interfaces, and embedded system protection circuits requiring stable component supply and long-lifecycle support.
Supply support for RD10F-T7 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 formed in 2010 through merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.
The RD10F-T7 belongs to the RD2.0F–RD82F planar zener diode family, designed specifically for reliable voltage regulation and transient suppression in standard-grade industrial and consumer electronics.
FAQ
What is the exact zener voltage tolerance for RD10F-T7?
The RD10F-T7 is specified as B3 grade, with a guaranteed zener voltage range of 9.83 V to 10.40 V at IZ = 40 mA and TA = 25°C. This ±2.1% tolerance is tighter than standard B-grade parts and supports precision reference applications without post-production sorting.
Can RD10F-T7 be used in surface-mount designs?
No - RD10F-T7 uses a through-hole DO-41 axial glass package with leaded terminals and is not compatible with SMT assembly. For surface-mount equivalents, consider Renesas' MELF or SOD-123 packaged zeners such as the RZ10F series, which share identical electrical specs but differ in form factor.
What is the maximum allowable reverse current before breakdown in RD10F-T7?
At VR = 7.0 V, the RD10F-T7 exhibits reverse current ≤10 μA (max) at TA = 25°C. This low leakage ensures minimal power loss and signal interference in high-impedance bias networks or standby protection circuits.
How does RD10F-T7 perform under elevated ambient temperatures?
RD10F-T7's power dissipation must be derated linearly above 25°C per Figure 1 in its datasheet: at 100°C ambient, maximum continuous power drops to ~0.6 W. Its +6.5 mV/°C temperature coefficient causes predictable VZ increase, enabling compensated reference designs.
Is RD10F-T7 compliant with RoHS and halogen-free standards?
Yes - RD10F-T7 meets EU RoHS Directive requirements as confirmed by Renesas Electronics' environmental compliance documentation. The DO-41 glass package contains no restricted substances, and the device is rated for standard-grade applications including industrial equipment and consumer electronics.
RD10F-T7 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:
- -
RD10F-T7 FAQ
1.How can I place an order for RD10F-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD10F-T7 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 RD10F-T7 reliable?
The price and inventory of RD10F-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD10F-T7 is usually 5 days.
3.What payment methods are accepted for RD10F-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD10F-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD10F-T7?
RD10F-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD10F-T7 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 RD10F-T7?
For technical support, including RD10F-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD10F-T7 requirements.
6.How does Aetrix verify that RD10F-T7 is sourced from the original manufacturer or authorized distributors?
All RD10F-T7 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 RD10F-T7 meets industry standards.
7.What is the process for return or replacement of RD10F-T7?
All RD10F-T7 units undergo pre-shipment inspection (PSI). If there is an issue with RD10F-T7, 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 RD10F-T7 part is unused and in its original packaging.
Return procedure for RD10F-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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