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Renesas RD7.5E-TB-AZ
- Part No.:
- RD7.5E-TB-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD7.5E-TB-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:37,500
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Product details
Overview
RD7.5E-TB-AZ from NEC Corporation is a 7.5 V, 500 mW Zener diode in SC-76 (SSP) surface-mount package, with ±5% tolerance and 5 µA maximum reverse leakage at rated voltage, used for precision voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the RD7.5E-TB-AZ datasheet, RD7.5E-TB-AZ pinout, RD7.5E-TB-AZ application, or RD7.5E-TB-AZ equivalent, key selection criteria include Zener voltage accuracy, power dissipation limit, reverse leakage at test current, temperature coefficient, and SC-76 mechanical compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. It is characterized at IZ = 5 mA with specified VZ, IZK, and dynamic impedance ZZT.
The SC-76 (SSP) package enables automated placement and reflow soldering in space-constrained applications. Its thermal resistance (RθJA) supports operation up to +150°C ambient when mounted on standard FR-4 PCBs with minimal copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V ±5% at IZ = 5 mA - defines nominal regulation point with tight tolerance for reference stability |
| Power Dissipation (PZ) | 500 mW - maximum continuous DC power handling at TA = 25°C; derates linearly above 25°C |
| Reverse Leakage (IR) | ≤5 µA at VR = 5 V - ensures low standby current in bias and sensing circuits |
| Zener Impedance (ZZT) | 15 Ω max at IZ = 5 mA - limits output voltage variation under dynamic load changes |
| Temperature Coefficient | +0.06%/°C typical - enables predictable VZ drift across industrial temperature range |
| Test Current (IZ) | 5 mA - standardized condition for VZ measurement and datasheet compliance |
Pinout & Package
SC-76 (SSP) is a 2-terminal surface-mount package with cathode band marking; terminals are anode and cathode, with no internal connection other than the Zener junction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common reference node in reverse-bias regulation | Connected to lower-potential side of regulated circuit; establishes polarity for proper Zener orientation |
| Cathode | Current exit terminal in forward bias; voltage-regulated output node in reverse bias | Marked with band; connected to supply rail or signal node requiring stabilized voltage |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables use as precision reference without external trimming in 3.3 V/5 V system rails |
| 500 mW power rating | Supports regulation of small-signal IC bias networks and sensor excitation circuits |
| Low 5 µA reverse leakage | Minimizes quiescent current draw in battery-powered monitoring nodes |
| SC-76 (SSP) footprint | Occupies <0.8 mm² board area; compatible with 0.4 mm pitch pick-and-place equipment |
Applications
| Voltage Reference for ADC Bias | Overvoltage Clamp in GPIO Protection |
|---|---|
Use Scenario: Providing stable reference voltage to 12-bit SAR ADC input buffers in portable instrumentation. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential at 7.5 V. Use Value: Tight ±5% tolerance ensures full-scale error remains within 0.5 LSB across production units. | Use Scenario: Clamping 3.3 V microcontroller GPIO lines against ESD transients exceeding 8 V. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting surge current before IC damage occurs. Use Value: 500 mW rating absorbs single 2-kV HBM pulses without degradation when paired with series current-limiting resistor. |
| Low-Power Sensor Excitation | Regulated Bias for Op-Amp Input Stage |
Use Scenario: Supplying constant 7.5 V excitation to resistive bridge sensors in HVAC pressure modules. IC Role / Device Role / Timing Role: Stable voltage source replacing higher-cost IC references where 1% absolute accuracy suffices. Use Value: Low 5 µA leakage prevents measurable offset shift in high-impedance Wheatstone bridge arms. | Use Scenario: Setting precise bias point for rail-to-rail op-amp input common-mode range in audio preamplifiers. IC Role / Device Role / Timing Role: Passive voltage node stabilizer defining DC operating point independent of supply ripple. Use Value: 15 Ω ZZT ensures <1 mV output variation under 100 µA load modulation from op-amp input bias currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C7V5 (ON Semiconductor) | Same 7.5 V ±5%, but 500 mW in DO-35 glass package; higher RθJA (500°C/W vs. ~300°C/W) | Through-hole assembly only; unsuitable for high-density SMT designs | Select if legacy through-hole manufacturing or higher surge robustness required |
| MMSZ5233B (ON Semiconductor) | 7.5 V ±5%, 500 mW, SOD-123 package; slightly higher ZZT (20 Ω) and leakage (10 µA) | Compatible SMT footprint but larger body (2.7 × 1.4 mm vs. 1.6 × 0.8 mm) | Select if existing SOD-123 land pattern must be reused without layout change |
Compared with BZX55C7V5 and MMSZ5233B, RD7.5E-TB-AZ offers the smallest board area and lowest thermal resistance among these 7.5 V Zeners, making it optimal for miniaturized, thermally constrained designs where SC-76 placement capability is available.
Availability
RD7.5E-TB-AZ is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and sensor excitation applications requiring stable component supply and consistent SC-76 tape-and-reel delivery.
Supply support for RD7.5E-TB-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
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.
RD7.5E-TB-AZ belongs to NEC's SSP-series Zener diode family, designed specifically for compact, high-reliability voltage stabilization in consumer and industrial control systems using surface-mount assembly.
FAQ
What is the Zener voltage tolerance of RD7.5E-TB-AZ?
The RD7.5E-TB-AZ has a Zener voltage tolerance of ±5% at 5 mA test current. This means its actual breakdown voltage falls between 7.125 V and 7.875 V under standard test conditions, enabling reliable use in applications where moderate reference accuracy is sufficient without active trimming.
Is RD7.5E-TB-AZ suitable for surface-mount assembly?
Yes, RD7.5E-TB-AZ uses the SC-76 (SSP) package, which is explicitly designed for reflow soldering and compatible with standard SMT pick-and-place equipment. Its taping specification (-TB-AZ) confirms reel-based automated placement support per NEC's SC-76 taping standard.
What is the maximum reverse leakage current for RD7.5E-TB-AZ?
The RD7.5E-TB-AZ specifies a maximum reverse leakage current of 5 µA at 5 V reverse voltage. This low leakage supports energy-efficient operation in always-on sensor interfaces and battery-backed circuits where standby current must remain below 10 µA.
Does RD7.5E-TB-AZ have a defined Zener impedance value?
Yes, RD7.5E-TB-AZ has a maximum Zener impedance (ZZT) of 15 Ω measured at 5 mA. This low dynamic impedance ensures minimal output voltage variation during transient load steps, making RD7.5E-TB-AZ suitable for stabilizing bias points in analog front-ends.
Can RD7.5E-TB-AZ replace older through-hole Zener diodes in new designs?
RD7.5E-TB-AZ can replace through-hole Zeners like BZX55C7V5 functionally, but requires PCB redesign due to its SC-76 footprint. Its smaller size, better thermal performance, and tape-and-reel compatibility make it ideal for new SMT-based designs where board space and assembly efficiency are priorities.
RD7.5E-TB-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:
- -
RD7.5E-TB-AZ FAQ
1.How can I place an order for RD7.5E-TB-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD7.5E-TB-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 RD7.5E-TB-AZ reliable?
The price and inventory of RD7.5E-TB-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD7.5E-TB-AZ is usually 5 days.
3.What payment methods are accepted for RD7.5E-TB-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD7.5E-TB-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD7.5E-TB-AZ?
RD7.5E-TB-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD7.5E-TB-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 RD7.5E-TB-AZ?
For technical support, including RD7.5E-TB-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD7.5E-TB-AZ requirements.
6.How does Aetrix verify that RD7.5E-TB-AZ is sourced from the original manufacturer or authorized distributors?
All RD7.5E-TB-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 RD7.5E-TB-AZ meets industry standards.
7.What is the process for return or replacement of RD7.5E-TB-AZ?
All RD7.5E-TB-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD7.5E-TB-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 RD7.5E-TB-AZ part is unused and in its original packaging.
Return procedure for RD7.5E-TB-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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