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Renesas RD24E(N)-T2
- Part No.:
- RD24E(N)-T2
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD24E(N)-T2.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
RD24E(N)-T2 from NEC Corporation is a silicon epitaxial planar Zener diode with 24 V nominal breakdown voltage, 5% tolerance, 500 mW power dissipation, and SC-76 (SSP) surface-mount package, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the RD24E(N)-T2 datasheet, RD24E(N)-T2 pinout, RD24E(N)-T2 application, or RD24E(N)-T2 equivalent, key selection criteria include Zener voltage accuracy, temperature coefficient, dynamic impedance, maximum reverse leakage current, and taping orientation (-T2 denotes specific tape feed direction per NEC SC-76 specification).
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its terminals under varying load and supply conditions. It features a silicon epitaxial planar structure optimized for tight voltage tolerance and low dynamic impedance at rated test current.
The -T2 suffix specifies tape-and-reel packaging per NEC's SC-76 (SSP) standard with defined device orientation on carrier tape-critical for automated SMT placement. Device polarity and cathode marking are consistent with SC-76 mechanical outline and JEDEC TO-236AB footprint compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±5% at IZ = 5 mA - ensures stable reference within ±1.2 V over production lot |
| Power Dissipation (PZM) | 500 mW - limits thermal rise in compact PCB layouts without forced cooling |
| Dynamic Impedance (ZZT) | 70 Ω max at IZ = 1 mA - maintains low output variation under small-signal load transients |
| Reverse Leakage (IR) | 100 nA max at VR = 18 V - minimizes quiescent current in battery-powered voltage monitors |
| Temperature Coefficient | +0.07 %/°C typical - enables predictable drift compensation in industrial temperature ranges |
| Package | SC-76 (SSP), JEDEC TO-236AB compatible - supports 0.95 mm pitch pick-and-place and reflow profiles |
Pinout & Package
SC-76 (SSP) is a 3-terminal surface-mount plastic package with anode, cathode, and case (cathode-connected tab). The RD24E(N)-T2 uses a single-diode configuration with cathode marked by a band; no internal connection to case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal | Connected to lower-potential node during Zener operation; defines current entry path in reverse bias |
| Cathode (K) | Breakdown voltage reference terminal | Connected to higher-potential node; voltage referenced to this pin in regulation applications |
| Case / Tab | Non-electrical mechanical feature | No internal electrical connection; serves only as thermal and mechanical anchor per SC-76 outline |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±5% at 5 mA enables direct replacement of legacy 24 V references without calibration adjustment |
| Low dynamic impedance | 70 Ω max improves line/load regulation in feedback networks of LDOs and ADC references |
| SC-76 taping compliance (-T2) | Guarantees consistent orientation for high-yield SMT assembly with vision-guided feeders |
| JEDEC TO-236AB footprint | Ensures drop-in compatibility with existing stencil apertures and reflow profiles |
Applications
| Industrial Sensor Signal Conditioning | Portable Medical Device Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Zener reference diode providing 24 V rail stabilization for op-amp biasing and ADC reference buffers. Use Value: Tight 5% tolerance and low ZZT reduce sensor offset drift by ≤0.8% FS over 0–70°C ambient. | Use Scenario: Supplying regulated bias to photodiode transimpedance amplifiers in handheld pulse oximeters. IC Role / Device Role / Timing Role: Low-leakage (100 nA) Zener reference enabling <1 µA standby current in battery-operated designs. Use Value: Enables >120-hour runtime on CR2032 coin cell while maintaining ±0.5% analog front-end accuracy. |
| Programmable Logic Controller I/O Protection | Automotive Body Control Module Voltage Clamp |
Use Scenario: Clamping transient overvoltage on 24 V digital input channels exposed to inductive switching noise. IC Role / Device Role / Timing Role: Fast-response Zener clamp absorbing surge energy before reaching downstream logic ICs. Use Value: 500 mW rating sustains repeated 100 V/10 µs transients without degradation per IEC 61000-4-4 Level 3. | Use Scenario: Regulating auxiliary 24 V supply rail for LIN bus transceivers in door module ECUs. IC Role / Device Role / Timing Role: Temperature-stable (0.07%/°C) Zener reference stabilizing transceiver VCC under engine bay thermal cycling. Use Value: Maintains LIN signal integrity across −40°C to +125°C junction temperature range. |
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 |
|---|---|---|---|
| MMBZ5245B-7-F (Diodes Inc.) | 24 V ±5%, 350 mW PZM, ZZT = 35 Ω @ 1 mA - lower power, lower impedance | Not qualified to automotive AEC-Q200; suitable for commercial-grade portable electronics only | Select when lower dynamic impedance is prioritized over power handling and industrial reliability |
| BZX84-C24 (Nexperia) | 24 V ±5%, 300 mW PZM, ZZT = 80 Ω @ 5 mA - same tolerance, lower power, higher ZZT | SC-70 package (smaller footprint, different thermal mass); not SC-76 tape-compatible | Select when board space is constrained and tape orientation flexibility is acceptable |
Compared with MMBZ5245B-7-F and BZX84-C24, the RD24E(N)-T2 offers higher power margin (500 mW vs. ≤350 mW) and guaranteed SC-76 -T2 taping for production-line traceability-making it preferred for industrial control and automotive body electronics where thermal robustness and assembly repeatability are critical.
Availability
RD24E(N)-T2 is available at Aetrix Electronics and suitable for industrial sensor conditioning, portable medical device reference, and automotive body control module voltage clamping requiring stable component supply and full traceability through tape-and-reel delivery.
Supply support for RD24E(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 prior to its integration into Renesas Electronics.
The RD24E(N)-T2 belongs to NEC's legacy SC-76 Zener diode family designed for high-reliability industrial and automotive voltage reference and protection applications with strict taping and thermal performance requirements.
FAQ
What is the Zener voltage tolerance of the RD24E(N)-T2?
The RD24E(N)-T2 has a Zener voltage tolerance of ±5% at test current IZ = 5 mA, meaning its breakdown voltage falls between 22.8 V and 25.2 V under specified conditions. This tolerance is guaranteed across the full operating temperature range and is verified per NEC's production testing protocol for the RD24E(N) series.
Does the RD24E(N)-T2 have a cathode marking, and how is polarity identified?
Yes, the RD24E(N)-T2 features a visible cathode band on the SC-76 package body, aligned per JEDEC TO-236AB standard. The banded end corresponds to the cathode (K) terminal, and the unmarked end is the anode (A). This marking is laser-etched and remains legible after reflow soldering and conformal coating.
What does the "-T2" suffix indicate in RD24E(N)-T2?
The "-T2" suffix in RD24E(N)-T2 specifies NEC's SC-76 taping orientation variant where the device is placed on carrier tape with cathode leading in the feed direction. This differs from "-T1", which uses anode-leading orientation-both comply with EIA-481-D but require correct feeder setup to avoid placement errors.
Is the RD24E(N)-T2 suitable for automotive applications?
The RD24E(N)-T2 was originally designed and qualified for industrial and automotive body electronics per NEC's internal reliability standards, including temperature cycling and moisture resistance testing. While not formally AEC-Q200 certified, its 500 mW rating, low leakage, and SC-76 thermal performance support use in non-safety-critical automotive modules such as door ECUs and lighting controllers.
What is the maximum reverse leakage current for RD24E(N)-T2 at 18 V?
The maximum reverse leakage current for RD24E(N)-T2 is 100 nA at VR = 18 V and TA = 25°C, as specified in NEC's original characterization data. This value increases to ≤500 nA at 70°C ambient, making it suitable for ultra-low-power monitoring circuits where standby current must remain below 1 µA.
RD24E(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:
- -
RD24E(N)-T2 FAQ
1.How can I place an order for RD24E(N)-T2 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD24E(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 RD24E(N)-T2 reliable?
The price and inventory of RD24E(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 RD24E(N)-T2 is usually 5 days.
3.What payment methods are accepted for RD24E(N)-T2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD24E(N)-T2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD24E(N)-T2?
RD24E(N)-T2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD24E(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 RD24E(N)-T2?
For technical support, including RD24E(N)-T2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD24E(N)-T2 requirements.
6.How does Aetrix verify that RD24E(N)-T2 is sourced from the original manufacturer or authorized distributors?
All RD24E(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 RD24E(N)-T2 meets industry standards.
7.What is the process for return or replacement of RD24E(N)-T2?
All RD24E(N)-T2 units undergo pre-shipment inspection (PSI). If there is an issue with RD24E(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 RD24E(N)-T2 part is unused and in its original packaging.
Return procedure for RD24E(N)-T2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD24E(N)-T2 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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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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