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Renesas RD8.2F(10)-T6-AZ
- Part No.:
- RD8.2F(10)-T6-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD8.2F(10)-T6-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:10,000
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Product details
Overview
RD8.2F(10)-T6-AZ from Renesas Electronics is a 1 W planar silicon Zener diode with nominal zener voltage 8.2 V (B3 grade, 8.12–8.54 V), dynamic impedance ≤4 Ω at 40 mA, and zener voltage temperature coefficient +4.5 mV/°C. It features DO-41 glass-sealed DHD package, 175°C max junction temperature, and is used for precision voltage regulation and surge absorption in power supply feedback loops.
For engineers reviewing the RD8.2F(10)-T6-AZ datasheet, RD8.2F(10)-T6-AZ pinout, RD8.2F(10)-T6-AZ application, or RD8.2F(10)-T6-AZ equivalent, this page delivers verified electrical specs, thermal behavior, JEDEC DO-41 terminal mapping, and direct alternative options for voltage reference and overvoltage protection circuits.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its 1 W power rating is derated linearly above 25°C ambient per Figure 1, with thermal resistance dependent on PCB copper area (e.g., 200°C/W at 5 mm² foil). The B3 voltage tolerance (±2.7%) ensures tight regulation for feedback sensing in DC-DC converters.
Dynamic impedance of ≤4 Ω at IZ = 40 mA enables low-noise regulation under load transients, while the +4.5 mV/°C temperature coefficient supports stable operation across −65°C to +175°C storage range. Reverse leakage remains ≤20 μA at VR = 6.5 V, critical for low-power standby circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 8.12–8.54 V at 40 mA - defines regulated output voltage window for feedback control accuracy |
| Power Dissipation | 1.0 W at TA = 25°C - sets maximum continuous power handling before thermal shutdown |
| Dynamic Impedance | ≤4 Ω at IZ = 40 mA - determines output voltage stability under load current variation |
| Temp. Coefficient | +4.5 mV/°C - quantifies voltage drift per degree, enabling compensation in wide-temp designs |
| Reverse Leakage | ≤20 μA at VR = 6.5 V - ensures minimal quiescent current in high-impedance bias networks |
| Junction Temp. | 175°C max - defines upper thermal limit for reliability in enclosed or high-ambient environments |
| Surge Power | 400 W (t = 10 μs) - specifies transient overvoltage clamping capability for ESD/surge events |
Pinout & Package
RD8.2F(10)-T6-AZ uses JEDEC DO-41 glass-sealed axial package (3.0 mm Ø × 5.0 mm max length) with cathode indicated by black band. Mounting requires ≥25 mm lead length for heatsinking per datasheet mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal | Marked with black band; connected to regulated voltage rail or error amplifier input |
Key Features
| Feature | Design Value |
|---|---|
| Wide zener voltage range (2–82 V) | Enables single-family standardization across multiple power supply output voltages |
| E24 series nominal values | Ensures compatibility with standard resistor/capacitor value selection in analog design |
| Planar DHD structure | Provides repeatable breakdown characteristics and improved thermal cycling reliability vs. alloyed diodes |
| 175°C junction rating | Supports operation in automotive engine compartments and industrial motor drive enclosures |
| DO-41 mechanical standardization | Guarantees drop-in replacement compatibility with legacy board layouts and automated assembly |
Applications
| Voltage Reference for SMPS Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating 12 V output of isolated flyback converter via TL431 optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener diode provides precise 8.2 V reference to set secondary-side error amplifier threshold. Use Value: Tight ±2.7% B3 tolerance and low 4 Ω dynamic impedance maintain ±1% output regulation across line/load/temperature. |
Use Scenario: Clamping 24 V industrial I/O line against 1 kV EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: Shunts transient energy into ground when line voltage exceeds 8.2 V + diode forward drop. Use Value: 400 W surge rating (10 μs) and 175°C junction temperature withstand repeated surges without parametric shift. |
| Low-Power Bias Network Stabilizer | Temperature-Compensated Reference |
Use Scenario: Generating stable 8.2 V bias for op-amp input stage in battery-powered sensor node. IC Role / Device Role / Timing Role: Maintains fixed reference despite 3.0–4.2 V Li-ion supply variation and −40°C to +85°C operating range. Use Value: 20 μA max reverse leakage at 6.5 V minimizes quiescent current; DO-41 package fits compact 2-layer PCB layouts. |
Use Scenario: Compensating thermistor-based temperature sensor offset in HVAC controller. IC Role / Device Role / Timing Role: Provides known +4.5 mV/°C drift to counteract negative thermistor coefficient in analog front-end. Use Value: Predictable positive tempco enables first-order linearization without digital calibration or additional components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4738A | 8.2 V nominal, ±5% tolerance (vs. RD8.2F's ±2.7%), 7.5 Ω ZZ, DO-41 package | Higher dynamic impedance reduces regulation accuracy in high-transient loads | Select when cost sensitivity outweighs regulation precision; verify thermal margin at 1 W |
| BZX85C8V2 | 8.2 V nominal, ±5%, 1 W, DO-41, but 10 Ω ZZ and −2.5 mV/°C tempco | Negative tempco conflicts with positive-coefficient circuits requiring drift cancellation | Prefer only in non-temperature-critical clamping; avoid where tempco matching is required |
Compared with RD8.2F(10)-T6-AZ, 1N4738A offers broader availability but sacrifices regulation stability, while BZX85C8V2 trades tighter thermal drift compensation for higher impedance-making RD8.2F(10)-T6-AZ optimal for precision feedback and compensated references.
Availability
RD8.2F(10)-T6-AZ is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and medical instrumentation requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for RD8.2F(10)-T6-AZ 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.
RD8.2F(10)-T6-AZ belongs to the RD2.0F–RD82F planar Zener diode family designed for standardized voltage regulation and surge suppression in industrial, computing, and communications equipment.
FAQ
What is the exact zener voltage tolerance for RD8.2F(10)-T6-AZ?
The RD8.2F(10)-T6-AZ is specified as B3 grade, with a zener voltage range of 8.12 V to 8.54 V at 40 mA test current-corresponding to ±2.7% tolerance around the nominal 8.2 V. This tighter tolerance than standard B-grade parts enables higher-accuracy voltage references in feedback networks without external trimming.
Does RD8.2F(10)-T6-AZ meet RoHS requirements?
Yes, RD8.2F(10)-T6-AZ complies with EU RoHS Directive restrictions on hazardous substances. Renesas Electronics confirms environmental compliance per its product stewardship policy, and the device carries appropriate marking per applicable regulations-no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
What is the maximum allowable surge reverse power for RD8.2F(10)-T6-AZ?
RD8.2F(10)-T6-AZ supports a surge reverse power of 400 W for pulse width t = 10 μs at TA = 25°C, as defined in Figure 7 of datasheet D13936EJ5V0DS. This rating applies to non-repetitive transients only; repetitive surges require derating based on thermal time constants shown in Figure 8.
Can RD8.2F(10)-T6-AZ be used in automotive under-hood applications?
RD8.2F(10)-T6-AZ is rated for junction temperatures up to 175°C and classified as "Standard" quality grade per Renesas documentation. While it meets thermal requirements for some under-hood locations, Renesas does not approve it for safety-critical automotive applications (e.g., engine control) without explicit written consent-consult Renesas for AEC-Q200 qualification status.
How does the +4.5 mV/°C temperature coefficient affect circuit performance?
The +4.5 mV/°C zener voltage temperature coefficient of RD8.2F(10)-T6-AZ causes output voltage to increase linearly with temperature. In precision references, this drift can be canceled using complementary negative-coefficient components (e.g., forward-biased diodes); in clamping applications, it ensures higher trip voltage at elevated temperatures-improving thermal safety margin.
RD8.2F(10)-T6-AZ 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:
- -
RD8.2F(10)-T6-AZ FAQ
1.How can I place an order for RD8.2F(10)-T6-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD8.2F(10)-T6-AZ 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 RD8.2F(10)-T6-AZ reliable?
The price and inventory of RD8.2F(10)-T6-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD8.2F(10)-T6-AZ is usually 5 days.
3.What payment methods are accepted for RD8.2F(10)-T6-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD8.2F(10)-T6-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD8.2F(10)-T6-AZ?
RD8.2F(10)-T6-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD8.2F(10)-T6-AZ 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 RD8.2F(10)-T6-AZ?
For technical support, including RD8.2F(10)-T6-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD8.2F(10)-T6-AZ requirements.
6.How does Aetrix verify that RD8.2F(10)-T6-AZ is sourced from the original manufacturer or authorized distributors?
All RD8.2F(10)-T6-AZ 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 RD8.2F(10)-T6-AZ meets industry standards.
7.What is the process for return or replacement of RD8.2F(10)-T6-AZ?
All RD8.2F(10)-T6-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD8.2F(10)-T6-AZ, 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 RD8.2F(10)-T6-AZ part is unused and in its original packaging.
Return procedure for RD8.2F(10)-T6-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD8.2F(10)-T6-AZ Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
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MMSZ5231B-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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