My Inquiry
My Account
Renesas RD2.4F-T7-AZ
- Part No.:
- RD2.4F-T7-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD2.4F-T7-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RD2.4F-T7-AZ from Renesas Electronics is a 1 W planar silicon Zener diode with nominal zener voltage 2.4 V (B2 grade: 2.41–2.65 V), dynamic impedance ≤15 Ω at 40 mA, and negative temperature coefficient of −2.0 mV/°C - used for precision voltage reference and overvoltage clamping in low-voltage power rails.
For engineers reviewing the RD2.4F-T7-AZ datasheet, RD2.4F-T7-AZ pinout, RD2.4F-T7-AZ application, or RD2.4F-T7-AZ equivalent, this device serves as a standardized, JEDEC DO-41 packaged Zener for stable shunt regulation in industrial control I/O protection, sensor biasing, and analog front-end voltage limiting where tight 2.4 V tolerance and low dynamic impedance are required.
Technical Context
This Zener operates in reverse breakdown mode with a specified test current of 40 mA for voltage rating; its planar glass-sealed DHD (Double Heatsink Diode) structure enables reliable thermal dissipation up to 1 W at 25°C ambient. The −2.0 mV/°C temperature coefficient ensures predictable drift behavior below 5 V, supporting stable reference design across temperature ranges.
It meets JEDEC DO-41 mechanical standards with cathode indicated by black band, supports surge reverse power of 400 W (t = 10 μs), and is rated for junction temperatures up to 175°C - making it suitable for transient suppression in non-safety-critical Standard-grade applications including office equipment and industrial automation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.41–2.65 V at IZ = 40 mA - defines precise clamping threshold for 2.4 V rail stabilization |
| Power Dissipation (P) | 1.0 W at TA = 25°C - sets maximum continuous DC power handling before thermal derating |
| Dynamic Impedance (ZZ) | ≤15 Ω at IZ = 40 mA - ensures minimal voltage shift under load variation for stable regulation |
| Temperature Coefficient (γZ) | −2.0 mV/°C - quantifies predictable downward voltage drift with rising temperature |
| Reverse Current (IR) | ≤200 μA at VR = 0.5 V - confirms low leakage in sub-threshold blocking state |
| Surge Reverse Power (PRSM) | 400 W (t = 10 μs) - enables single-pulse transient absorption without failure |
| Junction Temperature (Tj) | 175°C maximum - establishes upper thermal limit for reliability in enclosed environments |
Pinout & Package
RD2.4F-T7-AZ uses the JEDEC-standard DO-41 axial glass package (3.0 mm diameter × 5.0 mm length), with cathode identified by a black band. The device has two terminals: anode and cathode - no internal connections or multi-pin functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reverse breakdown reference node | Connected to lower-potential side of circuit; forms shunt path when cathode is biased above anode by ≥VZ |
| Cathode | Zener voltage reference terminal / surge input node | Marked with black band; connected to higher-potential rail to enable controlled reverse breakdown and voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| Planar DHD construction | Enables 1 W power handling with improved thermal stability vs. alloy-junction diodes |
| E24-series voltage grading | Supports standardized B1/B2/B3 tolerance bins for consistent sourcing and interchangeability |
| Negative γZ at 2.4 V | Compensates for positive TC of other components in mixed-technology voltage references |
| DO-41 mechanical compatibility | Ensures drop-in replacement capability across legacy and new designs using standard axial footprints |
| 175°C max junction rating | Allows operation in high-ambient industrial enclosures without forced cooling |
Applications
| Industrial Sensor Biasing | Microcontroller I/O Protection |
|---|---|
Use Scenario: Providing stable 2.4 V bias to analog output sensors (e.g., pressure transducers) operating from unregulated 3.3 V supplies. IC Role / Device Role / Timing Role: Shunt voltage reference and current sink regulating sensor excitation voltage. Use Value: Maintains ±1% output accuracy over −40°C to +85°C due to matched TC behavior and low ZZ. | Use Scenario: Clamping ESD transients on GPIO lines of ARM Cortex-M microcontrollers. IC Role / Device Role / Timing Role: Low-capacitance overvoltage clamp diverting >4 kV HBM surges away from IC pins. Use Value: Limits pin voltage to ≤2.9 V during fast transients, preventing latch-up and gate oxide damage. |
| Low-Voltage Power Rail Clamp | Analog Front-End Reference |
Use Scenario: Protecting 2.5 V LDO outputs from overshoot during load-step events in portable instrumentation. IC Role / Device Role / Timing Role: Passive shunt limiter absorbing excess energy during transient overvoltage conditions. Use Value: Responds within nanoseconds to suppress spikes >2.7 V while dissipating <100 mJ per event. | Use Scenario: Generating a stable 2.4 V reference for 12-bit ADCs in data acquisition modules. IC Role / Device Role / Timing Role: Precision voltage source establishing ADC full-scale calibration point. Use Value: Delivers <50 ppm/°C effective TC when combined with series resistor compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4730A | 2.4 V nominal, 1 W, DO-41, ZZ ≤ 100 Ω @ 53 mA - higher dynamic impedance and looser tolerance (±5%) | Less precise regulation in low-current reference circuits; acceptable for coarse clamping only | Select when cost sensitivity outweighs regulation accuracy and tighter binning is unnecessary |
| BZX55-C2V4 | 2.4 V nominal, 500 mW, DO-35, ZZ ≤ 100 Ω @ 5 mA - lower power rating and smaller package limits surge handling | Not suitable for 1 W continuous dissipation or 400 W pulse absorption requirements | Choose only for space-constrained PCBs where thermal and surge demands are significantly reduced |
Compared with 1N4730A and BZX55-C2V4, RD2.4F-T7-AZ provides superior voltage stability (tighter B2 bin), lower dynamic impedance, and full 1 W/400 W rating - making it the preferred choice for industrial-grade 2.4 V reference and clamping where precision and ruggedness are jointly required.
Availability
RD2.4F-T7-AZ is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller I/O protection, and low-voltage power rail clamp applications requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for RD2.4F-T7-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 manufacturer headquartered in Japan, delivering microcontrollers, analog, power, and timing solutions for industrial, automotive, and consumer markets.
RD2.4F-T7-AZ belongs to the RD2.0F–RD82F planar Zener diode family, designed specifically for standardized, high-reliability voltage regulation and transient suppression in Standard-grade commercial and industrial equipment.
FAQ
What is the exact zener voltage range for RD2.4F-T7-AZ?
The RD2.4F-T7-AZ is specified as a B2 grade device with a zener voltage range of 2.41 V to 2.65 V at IZ = 40 mA and TA = 25°C. This binning ensures tighter tolerance than generic 2.4 V Zeners and is validated per Renesas datasheet D13936EJ5V0DS. The RD2.4F-T7-AZ achieves this performance using planar DHD construction and E24-series grading.
Does RD2.4F-T7-AZ meet RoHS requirements?
Yes, RD2.4F-T7-AZ complies with EU RoHS Directive requirements as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits. Renesas states that all products manufactured after July 2006 - including RD2.4F-T7-AZ - are RoHS-compliant unless otherwise marked.
What is the maximum allowable surge reverse power for RD2.4F-T7-AZ?
The RD2.4F-T7-AZ supports a surge reverse power of 400 W for pulse width t = 10 μs, as defined in Figure 7 of the official Renesas datasheet D13936EJ5V0DS. This rating applies under non-repetitive conditions at TA = 25°C and is critical for transient voltage suppression in industrial power interfaces. Exceeding this limit risks irreversible junction damage.
Can RD2.4F-T7-AZ be used in automotive applications?
No - RD2.4F-T7-AZ is classified as a "Standard" quality grade device per Renesas documentation, intended for computers, office equipment, and industrial robots. It is not qualified for automotive use (which requires "High Quality" grade with AEC-Q101 stress testing). Using RD2.4F-T7-AZ in automotive systems violates Renesas' stated application guidance and voids reliability warranties.
What package type does RD2.4F-T7-AZ use, and how is polarity marked?
RD2.4F-T7-AZ uses the JEDEC DO-41 axial glass package (3.0 mm Ø × 5.0 mm L) with cathode indicated by a black band on the body. The marking color is black, and the device conforms to standard DO-41 footprint dimensions - enabling compatibility with automated insertion and wave soldering processes. This package supports the full 1 W power rating under specified thermal conditions.
RD2.4F-T7-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:
- -
RD2.4F-T7-AZ FAQ
1.How can I place an order for RD2.4F-T7-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD2.4F-T7-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 RD2.4F-T7-AZ reliable?
The price and inventory of RD2.4F-T7-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD2.4F-T7-AZ is usually 5 days.
3.What payment methods are accepted for RD2.4F-T7-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD2.4F-T7-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD2.4F-T7-AZ?
RD2.4F-T7-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD2.4F-T7-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 RD2.4F-T7-AZ?
For technical support, including RD2.4F-T7-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD2.4F-T7-AZ requirements.
6.How does Aetrix verify that RD2.4F-T7-AZ is sourced from the original manufacturer or authorized distributors?
All RD2.4F-T7-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 RD2.4F-T7-AZ meets industry standards.
7.What is the process for return or replacement of RD2.4F-T7-AZ?
All RD2.4F-T7-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD2.4F-T7-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 RD2.4F-T7-AZ part is unused and in its original packaging.
Return procedure for RD2.4F-T7-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD2.4F-T7-AZ Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
