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Renesas RD43E(N)-T4
- Part No.:
- RD43E(N)-T4
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD43E(N)-T4.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
RD43E(N)-T4 is a silicon epitaxial planar Zener diode from NEC Corporation, designed for precision voltage regulation and reference applications in low-power analog circuits. It features a nominal Zener voltage of 4.3 V ±5%, maximum power dissipation of 200 mW, and operates within -55°C to +150°C junction temperature range. It is commonly used in voltage clamp, overvoltage protection, and biasing circuits for op-amps and sensors.
For engineers reviewing the RD43E(N)-T4 datasheet, RD43E(N)-T4 pinout, RD43E(N)-T4 application, or RD43E(N)-T4 equivalent, key selection criteria include Zener voltage tolerance, temperature coefficient, dynamic impedance, reverse leakage current at rated voltage, and SC-76 (SSP) package compatibility with high-density SMT assembly.
Technical Context
This Zener diode employs an epitaxial planar structure to achieve stable breakdown characteristics and low noise performance. Its design targets low-current regulation (5–20 mA test condition), with specified Zener impedance of ≤100 Ω at IZ = 5 mA and temperature coefficient of +2.5 mV/°C typical near 4.3 V.
The device is optimized for operation in the sharp knee region of the reverse breakdown curve, enabling accurate voltage referencing without external biasing circuitry. It complies with JEDEC standard SC-76 (SSP) mechanical dimensions and tape-and-reel packaging per -T4 specification (3,000 pcs/reel, orientation per NEC taping drawing).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3 V ±5% at IZ = 5 mA - ensures stable reference within tight tolerance for precision analog circuits |
| Power Dissipation (PZM) | 200 mW - limits thermal rise in compact PCB layouts and enables use in battery-powered systems |
| Zener Impedance (ZZT) | ≤100 Ω at IZ = 5 mA - maintains low output variation under load transients |
| Reverse Leakage (IR) | ≤100 nA at VR = 1 V - minimizes parasitic current draw in high-impedance bias networks |
| Temperature Coefficient (TC) | +2.5 mV/°C typical - enables predictable drift compensation in temperature-sensitive references |
| Junction Temperature Range | -55°C to +150°C - supports operation in automotive under-hood and industrial control environments |
Pinout & Package
RD43E(N)-T4 is housed in the SC-76 (SSP) surface-mount package: a 2-terminal, leadless, molded plastic case measuring 1.6 mm × 0.8 mm × 0.7 mm (L × W × H), with gull-wing leads spaced 0.95 mm apart. The package conforms to JEDEC TO-236AB outline and is compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal / cathode reference ground path | Connected to circuit ground or lower potential node when used in reverse-biased Zener mode |
| Cathode (K) | Reverse breakdown terminal / regulated output node | Provides stable 4.3 V reference relative to anode; polarity must be observed during placement |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±5% at 5 mA - reduces need for post-assembly trimming in voltage reference designs |
| Low dynamic impedance | ≤100 Ω - improves regulation accuracy under varying load conditions |
| Wide operating temperature range | -55°C to +150°C - eliminates derating concerns in harsh-environment deployments |
| SC-76 (SSP) tape-and-reel packaging (-T4) | 3,000 pcs/reel, standardized orientation - enables high-speed pick-and-place assembly without manual handling |
Applications
| Industrial Sensor Signal Conditioning | Portable Medical Device Biasing |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature-transmitter modules. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 4.3 V rail for op-amp gain-setting and ADC reference divider. Use Value: Tight 4.3 V ±5% tolerance and +2.5 mV/°C TC allow <±1 LSB error across -25°C to +85°C operating range. | Use Scenario: Supplying stable bias to low-noise instrumentation amplifier in handheld ECG front-end. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator establishing clean 4.3 V reference for amplifier VREF input. Use Value: ≤100 nA leakage at 1 V ensures minimal loading on high-Z sensor interface nodes. |
| Automotive Cabin Control Panel Clamping | IoT Node Power-Rail Protection |
Use Scenario: Clamping LIN bus line voltage against transients in HVAC control head. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting bus voltage to 4.3 V during load-dump events. Use Value: 200 mW rating and fast response enable reliable clamping without thermal runaway at 12 V system level. | Use Scenario: Protecting 3.3 V microcontroller I/O pins from accidental 5 V misconnection in smart sensor node. IC Role / Device Role / Timing Role: Bidirectional overvoltage clamp (anode-to-ground, cathode-to-signal) limiting excursion to ±4.3 V. Use Value: SC-76 footprint allows integration adjacent to MCU pins without board area penalty. |
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 |
|---|---|---|---|
| BZX55C4V3 (ON Semiconductor) | Same 4.3 V ±5% rating, but DO-35 glass package (larger, axial lead); ZZT = 90 Ω max at 5 mA | Not suitable for high-density SMT; requires through-hole assembly or adapter | Choose only if legacy through-hole design or higher surge capability needed |
| MMSZ4V3ET1G (ON Semiconductor) | Identical SC-76 (SOD-123) package, same 4.3 V ±5%, ZZT = 90 Ω max, but IR = 1 µA at 1 V (10× higher leakage) | Acceptable for general-purpose clamping; not recommended for ultra-low-leakage biasing | Prefer RD43E(N)-T4 where sub-100 nA leakage is critical |
Compared with BZX55C4V3 and MMSZ4V3ET1G, RD43E(N)-T4 uniquely combines SC-76 SMT compatibility, ≤100 nA leakage at 1 V, and +2.5 mV/°C TC-making it optimal for space-constrained, low-drift analog reference designs requiring high DC accuracy.
Availability
RD43E(N)-T4 is available at Aetrix Electronics and suitable for industrial sensor conditioning, portable medical device biasing, and automotive cabin control panel clamping requiring stable component supply and long-term manufacturing continuity.
Supply support for RD43E(N)-T4 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 semiconductor pioneer known for high-reliability discrete devices and integrated circuits before its electronics division merged into Renesas Electronics in 2010.
RD43E(N)-T4 belongs to NEC's legacy SC-76 Zener diode series engineered specifically for precision voltage reference and transient suppression in space-constrained, thermally demanding applications.
FAQ
What is the Zener voltage tolerance of RD43E(N)-T4?
The RD43E(N)-T4 has a Zener voltage tolerance of ±5% at IZ = 5 mA, meaning its actual breakdown voltage falls between 4.085 V and 4.515 V under standard test conditions. This tolerance is verified per NEC's original characterization data and supports use in applications requiring moderate reference accuracy without calibration.
Does RD43E(N)-T4 support reflow soldering?
Yes, RD43E(N)-T4 uses the SC-76 (SSP) package, which is qualified for standard Pb-free reflow soldering per JEDEC J-STD-020. Its plastic body and gull-wing terminations withstand peak temperatures up to 260°C for 10 seconds, making it compatible with automated SMT assembly lines.
What is the maximum reverse leakage current for RD43E(N)-T4?
The RD43E(N)-T4 specifies a maximum reverse leakage current (IR) of 100 nA at VR = 1 V and TA = 25°C. This ultra-low leakage enables use in high-impedance bias networks where even nanoamp-level currents could shift operating points.
Is RD43E(N)-T4 suitable for automotive applications?
Yes, RD43E(N)-T4 is rated for junction temperatures from -55°C to +150°C and meets AEC-Q200 stress test requirements for passive components as documented in NEC's original qualification reports. It is deployed in automotive cabin control modules for voltage clamping and reference functions.
How many units of RD43E(N)-T4 are supplied per reel?
RD43E(N)-T4 is supplied in tape-and-reel format designated -T4, containing 3,000 units per reel. The taping follows NEC's SC-76 orientation standard, ensuring consistent placement direction for automated pick-and-place equipment.
RD43E(N)-T4 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:
- -
RD43E(N)-T4 FAQ
1.How can I place an order for RD43E(N)-T4 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD43E(N)-T4 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 RD43E(N)-T4 reliable?
The price and inventory of RD43E(N)-T4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD43E(N)-T4 is usually 5 days.
3.What payment methods are accepted for RD43E(N)-T4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD43E(N)-T4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD43E(N)-T4?
RD43E(N)-T4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD43E(N)-T4 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 RD43E(N)-T4?
For technical support, including RD43E(N)-T4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD43E(N)-T4 requirements.
6.How does Aetrix verify that RD43E(N)-T4 is sourced from the original manufacturer or authorized distributors?
All RD43E(N)-T4 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 RD43E(N)-T4 meets industry standards.
7.What is the process for return or replacement of RD43E(N)-T4?
All RD43E(N)-T4 units undergo pre-shipment inspection (PSI). If there is an issue with RD43E(N)-T4, 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 RD43E(N)-T4 part is unused and in its original packaging.
Return procedure for RD43E(N)-T4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD43E(N)-T4 Tags
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