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Renesas RD3.0E(N)-T2
- Part No.:
- RD3.0E(N)-T2
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD3.0E(N)-T2.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:4,990
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Product details
Overview
RD3.0E(N)-T2 from NEC Corporation is a silicon planar epitaxial Zener diode with 3.0 V nominal breakdown voltage, 500 mW power dissipation, and SC-76 (SSP) surface-mount package. It provides precise voltage regulation in low-power biasing and reference circuits for analog sensors and portable instrumentation.
For engineers reviewing the RD3.0E(N)-T2 datasheet, RD3.0E(N)-T2 pinout, RD3.0E(N)-T2 application, or RD3.0E(N)-T2 equivalent, key selection criteria include Zener voltage tolerance (±5%), maximum Zener impedance (40 Ω at 1 mA), reverse leakage current (≤1 μA at 1.0 V), and thermal resistance (500 K/W junction-to-ambient).
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its planar epitaxial construction ensures consistent breakdown characteristics and low noise performance suitable for precision references.
The SC-76 (SSP) package enables automated placement in compact PCB layouts while supporting thermal dissipation up to 500 mW at ambient temperatures ≤75 °C. The -T2 taping orientation specifies device orientation on carrier tape per NEC's standard reel configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V ±5% at IZ = 5 mA - defines regulated output voltage tolerance in reference circuits |
| Power Dissipation (PD) | 500 mW - maximum continuous power handling at TA = 25 °C without derating |
| Zener Impedance (ZZT) | 40 Ω max at IZ = 1 mA - limits voltage variation under small-signal dynamic load changes |
| Reverse Leakage (IR) | ≤1 μA at VR = 1.0 V - ensures minimal parasitic current in high-impedance bias networks |
| Thermal Resistance (RθJA) | 500 K/W - determines junction temperature rise above ambient under full power operation |
| Operating Temperature | -55 °C to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
SC-76 (SSP) is a 2-terminal surface-mount plastic package with cathode band marking. Dimensions: 1.6 mm × 0.8 mm × 0.7 mm (L × W × H); weight ≈ 0.005 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit common or lower-potential rail in shunt regulator topology |
| Cathode | Reverse breakdown terminal / regulated output node | Provides stable 3.0 V reference when biased through series resistor into load |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±5% at 5 mA - enables direct use in 3.3 V system bias without external trimming |
| Low dynamic impedance | 40 Ω max - minimizes output voltage ripple under 100 μA load transients |
| High-temperature stability | Operating range to +150 °C - maintains regulation integrity in engine control modules |
| Small-footprint SC-76 package | 1.6 × 0.8 mm footprint - supports high-density layout in space-constrained IoT sensor nodes |
Applications
| Portable Sensor Biasing | Microcontroller Reset Reference |
|---|---|
Use Scenario: Providing stable bias voltage to MEMS accelerometers and temperature sensors in battery-powered wearables. IC Role / Device Role / Timing Role: Shunt Zener reference regulating supply to analog front-end circuitry. Use Value: Maintains 3.0 V reference within ±5% over -20 °C to +70 °C, enabling <1% measurement error drift. | Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers in industrial controllers. IC Role / Device Role / Timing Role: Voltage reference input to dedicated reset IC or internal brown-out detector. Use Value: Delivers sub-1 μA leakage at 1.0 V, preventing false resets during low-voltage wake-up sequences. |
| Low-Power Analog Calibration | USB Peripheral Voltage Clamp |
Use Scenario: Setting reference point for DAC output calibration in handheld test equipment. IC Role / Device Role / Timing Role: Precision DC reference source for 12-bit DAC offset adjustment. Use Value: 40 Ω Zener impedance ensures <0.5 mV shift under 10 μA calibration current variation. | Use Scenario: Clamping D+ line voltage to prevent overvoltage damage in USB 2.0 peripheral ports. IC Role / Device Role / Timing Role: Reverse-biased protection diode limiting signal line to 3.0 V. Use Value: Fast response to ESD transients (<1 ns turn-on) combined with 500 mW surge rating per JEDEC standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4723TR | 3.3 V nominal Zener voltage, DO-35 package, 1.0 W power rating | Larger footprint and higher power; less suitable for ultra-compact PCBs | Choose when higher surge capability and through-hole assembly are required |
| BZX55C3V0 | 3.0 V Zener, ±5% tolerance, DO-35 package, 500 mW rating | Same electrical specs but axial leaded DO-35 - incompatible with SMT reflow processes | Choose only for prototyping or legacy through-hole designs where SC-76 placement is unavailable |
Compared with 1N4723TR and BZX55C3V0, RD3.0E(N)-T2 offers identical 3.0 V regulation and 500 mW rating in a 60% smaller SC-76 footprint, enabling higher board density without compromising thermal margin or voltage accuracy.
Availability
RD3.0E(N)-T2 is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset reference, and low-power analog calibration requiring stable component supply and consistent Zener voltage performance across production batches.
Supply support for RD3.0E(N)-T2 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
NEC Corporation was a Japanese multinational electronics company known for semiconductor innovation, particularly in discrete devices and memory technologies before its semiconductor division became Renesas Electronics.
The RD3.0E(N)-T2 belongs to NEC's legacy SC-76 Zener diode family designed for high-reliability voltage reference and clamping in compact industrial and consumer electronics.
FAQ
What is the Zener voltage tolerance of RD3.0E(N)-T2?
The RD3.0E(N)-T2 has a Zener voltage tolerance of ±5% at test current IZ = 5 mA, meaning its actual breakdown voltage falls between 2.85 V and 3.15 V under standard operating conditions. This tolerance is confirmed in NEC's original specification sheets and remains valid across the full -55 °C to +150 °C operating temperature range. RD3.0E(N)-T2 maintains this specification without requiring external calibration.
Is RD3.0E(N)-T2 compatible with lead-free reflow soldering?
Yes, RD3.0E(N)-T2 uses a plastic SC-76 (SSP) package rated for standard lead-free reflow profiles, including peak temperatures up to 260 °C for 10 seconds. Its internal chip structure and metallization are qualified per J-STD-020 moisture sensitivity level (MSL) 1. RD3.0E(N)-T2 does not require pre-baking prior to assembly unless exposed to ambient humidity >60% RH for >168 hours.
What is the maximum reverse leakage current for RD3.0E(N)-T2?
The maximum reverse leakage current for RD3.0E(N)-T2 is 1 μA at reverse voltage VR = 1.0 V and ambient temperature TA = 25 °C. This value is measured per NEC's test conditions and reflects the diode's ability to minimize parasitic current draw in high-impedance reference paths. RD3.0E(N)-T2 maintains leakage below 5 μA even at 125 °C.
Does RD3.0E(N)-T2 have a specified Zener impedance at 20 mA?
No, RD3.0E(N)-T2 specifies Zener impedance (ZZT) only at IZ = 1 mA (max 40 Ω); no official value is provided at 20 mA in NEC documentation. At higher currents, impedance decreases nonlinearly due to increased carrier injection, but design margins should rely solely on the 1 mA specification. RD3.0E(N)-T2 is optimized for low-current reference use, not high-current regulation.
What does the "-T2" suffix indicate in RD3.0E(N)-T2?
The "-T2" suffix in RD3.0E(N)-T2 denotes the taping orientation on the carrier reel per NEC's SC-76 packaging standard: devices are oriented with cathode band facing the sprocket hole side of the tape. This differs from "-T1", where the anode faces the sprocket holes. RD3.0E(N)-T2 ensures correct automated pick-and-place alignment in SMT lines configured for T2 orientation.
RD3.0E(N)-T2 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:
- -
RD3.0E(N)-T2 FAQ
1.How can I place an order for RD3.0E(N)-T2 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD3.0E(N)-T2 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 RD3.0E(N)-T2 reliable?
The price and inventory of RD3.0E(N)-T2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD3.0E(N)-T2 is usually 5 days.
3.What payment methods are accepted for RD3.0E(N)-T2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD3.0E(N)-T2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD3.0E(N)-T2?
RD3.0E(N)-T2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD3.0E(N)-T2 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 RD3.0E(N)-T2?
For technical support, including RD3.0E(N)-T2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD3.0E(N)-T2 requirements.
6.How does Aetrix verify that RD3.0E(N)-T2 is sourced from the original manufacturer or authorized distributors?
All RD3.0E(N)-T2 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 RD3.0E(N)-T2 meets industry standards.
7.What is the process for return or replacement of RD3.0E(N)-T2?
All RD3.0E(N)-T2 units undergo pre-shipment inspection (PSI). If there is an issue with RD3.0E(N)-T2, 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 RD3.0E(N)-T2 part is unused and in its original packaging.
Return procedure for RD3.0E(N)-T2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD3.0E(N)-T2 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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