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Renesas RD8.2SL-T1-AT
- Part No.:
- RD8.2SL-T1-AT
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
RD8.2SL-T1-AT.pdf
- Description:
- DIODE ZENER 2-SUPER MINI MOLD
- Quantity:
- Payment:
- Shipping:
Inventory:63,000
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Product details
Overview
RD8.2SL-T1-AT from Renesas Electronics is a 2-pin Super Mini Mold zener diode with nominal zener voltage 8.2 V (±3.5% tolerance), 200 mW power dissipation, and dynamic impedance ≤60 Ω at 0.5 mA test current. It delivers sharp breakdown and low noise for precision voltage reference and surge suppression in audio and instrumentation circuits.
For engineers reviewing the RD8.2SL-T1-AT datasheet, RD8.2SL-T1-AT pinout, RD8.2SL-T1-AT application, or RD8.2SL-T1-AT equivalent, key selection criteria include zener voltage tolerance (N/N1/N2/N3 grade), thermal impedance (625°C/W on 30×30×1.6 mm PCB), reverse surge capability (2.2 W at 10 µs), junction temperature limit (150°C), and RoHS-compliant packaging.
Technical Context
This device operates as a two-terminal voltage regulator using avalanche breakdown in silicon PN junction. Its sharp knee characteristic enables stable clamping at 8.2 V under reverse bias, with temperature coefficient of +5.5 mV/°C (typical) per Fig. 6 - consistent with zener voltages above 6 V.
The 2-pin Super Mini Mold package (2.5×1.25×0.9 mm) supports surface-mount assembly and achieves 625°C/W transient thermal impedance on standard glass-epoxy PCBs. Reverse surge rating of 2.2 W at 10 µs pulse width allows transient overvoltage absorption without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Vz | 7.69–8.61 V (N grade, 0.5 mA test current); defines stable regulation point for reference or clamping |
| Dynamic Impedance Zz | ≤60 Ω at Iz = 0.5 mA; ensures minimal voltage shift under load variation |
| Power Dissipation P | 200 mW at TA = 25°C; derates linearly to zero at 150°C junction temperature |
| Reverse Surge Power PRSM | 2.2 W at t = 10 µs (non-repetitive); absorbs short transients without failure |
| Junction Temperature Tj | 150°C maximum; sets upper thermal limit for continuous operation |
| Storage Temperature | –55 to +150°C; compatible with reflow soldering and industrial ambient conditions |
| RoHS Compliance | Yes; lead-free termination and halogen-free molding compound per EU directive |
Pinout & Package
Package: 2-pin Super Mini Mold (SMD), dimensions 2.5±0.15 × 1.25±0.1 × 0.9±0.1 mm; cathode indicated by marking band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to circuit ground or lower potential node during zener operation |
| Cathode | Zener breakdown terminal / high-side connection | Marked end; connects to voltage source or signal line requiring clamping or regulation |
Key Features
| Feature | Design Value |
|---|---|
| Sharp Breakdown Characteristic | Enables precise voltage threshold detection with minimal hysteresis in clipping and reference circuits |
| Low Noise Performance | Reduces unwanted signal modulation in audio preamp and sensor signal conditioning paths |
| E24 Standard Zener Voltage | Ensures compatibility with standard resistor/capacitor value series for predictable design scaling |
| 200 mW Power Rating | Supports moderate-current regulation without heatsinking in space-constrained SMT layouts |
| 625°C/W Thermal Impedance | Allows accurate thermal modeling on common 30×30 mm FR-4 PCBs for reliability validation |
Applications
| Audio Equipment Power Supply | Instrumentation Reference Circuit |
|---|---|
Use Scenario: Stabilizing bias voltage for op-amp input stages in analog audio mixers. IC Role / Device Role / Timing Role: Zener diode providing fixed 8.2 V reference to set DC operating point. Use Value: Low noise and sharp knee minimize audible distortion and improve channel-to-channel matching. | Use Scenario: Generating stable reference for 12-bit ADC front-end in portable multimeters. IC Role / Device Role / Timing Role: Precision voltage clamp defining full-scale input range. Use Value: ±3.5% Vz tolerance and 60 Ω Zz ensure <0.1% reference error across operating temperature. |
| Waveform Clipper Circuit | Surge Absorber in Sensor Interface |
Use Scenario: Limiting peak amplitude of AC-coupled audio signals to prevent amplifier saturation. IC Role / Device Role / Timing Role: Bidirectional clamping element (with series diode) shaping signal envelope. Use Value: Sharp breakdown enables clean clipping at exactly 8.2 V without soft roll-off or overshoot. | Use Scenario: Protecting I²C bus lines from ESD events in environmental sensor nodes. IC Role / Device Role / Timing Role: Transient voltage suppressor shunting surges above 8.2 V to ground. Use Value: 2.2 W/10 µs surge rating clamps fast transients while maintaining signal integrity below threshold. |
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, 1 W power rating, DO-41 through-hole package, Zz ≈ 5 Ω | Higher power handling but larger footprint; unsuitable for dense SMT layouts | Select when higher surge energy absorption is required and board space permits through-hole mounting |
| BZX55C8V2 | 8.2 V nominal, 500 mW rating, DO-35 glass package, Zz ≈ 20 Ω | Higher power and lower impedance but legacy glass package with lower moisture resistance | Prefer for cost-sensitive industrial designs where RoHS compliance is not mandatory |
Compared with 1N4738A and BZX55C8V2, RD8.2SL-T1-AT offers superior SMT manufacturability, guaranteed low-noise performance, and tighter thermal impedance control on standard PCBs - making it optimal for compact, high-fidelity analog systems.
Availability
RD8.2SL-T1-AT is available at Aetrix Electronics and suitable for audio equipment, instrumentation systems, and sensor interface circuits requiring stable component supply with consistent zener voltage grading and RoHS compliance.
Supply support for RD8.2SL-T1-AT 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 automotive, industrial, and consumer applications.
RD8.2SL-T1-AT belongs to the RDx.xSL zener diode product line designed specifically for low-noise, high-stability voltage reference and transient suppression in compact SMT audio and test equipment.
FAQ
What is the exact zener voltage range for RD8.2SL-T1-AT at 0.5 mA test current?
The RD8.2SL-T1-AT has a guaranteed zener voltage range of 7.69 V to 8.61 V at 0.5 mA test current per the N grade specification in Renesas Data Sheet D11445EJ3V0DS. This ±3.5% tolerance band applies under TA = 25 ± 2°C conditions and is validated using 40 ms pulse testing per Note 1.
Does RD8.2SL-T1-AT support RoHS-compliant manufacturing processes?
Yes, RD8.2SL-T1-AT uses lead-free terminations and halogen-free molding compound compliant with the EU RoHS Directive. Renesas confirms environmental compatibility in its official documentation, and the device carries no exemptions requiring special handling or labeling beyond standard RoHS requirements.
What is the maximum allowable junction temperature for continuous operation of RD8.2SL-T1-AT?
The maximum junction temperature for RD8.2SL-T1-AT is 150°C, as specified in the Absolute Maximum Ratings table. Operation above this temperature risks irreversible degradation of the PN junction. Derating must be applied per Fig. 1, reducing power dissipation linearly from 200 mW at 25°C to zero at 150°C ambient on standard PCBs.
How does the dynamic impedance of RD8.2SL-T1-AT affect voltage regulation accuracy?
The RD8.2SL-T1-AT exhibits dynamic impedance ≤60 Ω at 0.5 mA, meaning a 1 mA change in zener current causes ≤60 mV shift in output voltage. This directly limits regulation accuracy in current-source-based references and determines minimum bypass capacitance needed to suppress ripple in low-noise applications.
Can RD8.2SL-T1-AT be used in place of older NEC RD8.2SL variants without layout changes?
Yes, RD8.2SL-T1-AT maintains identical Super Mini Mold package dimensions (2.5×1.25×0.9 mm), pinout, and electrical specifications as the original NEC RD8.2SL. The "T1-AT" suffix denotes tape-and-reel packaging and Renesas branding post-merger, with no functional or mechanical deviation from the legacy part.
RD8.2SL-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Super Mini Mold
RD8.2SL-T1-AT FAQ
1.How can I place an order for RD8.2SL-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for RD8.2SL-T1-AT 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 RD8.2SL-T1-AT reliable?
The price and inventory of RD8.2SL-T1-AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD8.2SL-T1-AT is usually 5 days.
3.What payment methods are accepted for RD8.2SL-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD8.2SL-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD8.2SL-T1-AT?
RD8.2SL-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD8.2SL-T1-AT 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 RD8.2SL-T1-AT?
For technical support, including RD8.2SL-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD8.2SL-T1-AT requirements.
6.How does Aetrix verify that RD8.2SL-T1-AT is sourced from the original manufacturer or authorized distributors?
All RD8.2SL-T1-AT 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 RD8.2SL-T1-AT meets industry standards.
7.What is the process for return or replacement of RD8.2SL-T1-AT?
All RD8.2SL-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with RD8.2SL-T1-AT, 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 RD8.2SL-T1-AT part is unused and in its original packaging.
Return procedure for RD8.2SL-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD8.2SL-T1-AT Tags
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