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Renesas RD75E(N)-T1
- Part No.:
- RD75E(N)-T1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD75E(N)-T1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:12,000
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Product details
Overview
RD75E(N)-T1 from NEC Corporation is a silicon planar epitaxial Zener diode with 75 V nominal breakdown voltage, 500 mW power dissipation, and SC-76 (SSP) surface-mount package; it provides precise voltage regulation in low-power reference and protection circuits for industrial sensors and power supply feedback loops.
For engineers reviewing the RD75E(N)-T1 datasheet, RD75E(N)-T1 pinout, RD75E(N)-T1 application, or RD75E(N)-T1 equivalent, key selection criteria include Zener voltage tolerance (±5%), maximum Zener impedance (700 Ω at 1 mA), reverse leakage current (≤5 µA at 60 V), and thermal resistance (500 K/W junction-to-ambient).
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. It features a silicon planar epitaxial structure optimized for tight voltage tolerance and low dynamic impedance.
The SC-76 (SSP) package enables automated placement and reflow soldering in space-constrained PCB layouts. Its taping specification (-T1) defines device orientation on 3000-unit reels for consistent pick-and-place feed direction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 75 V ±5% at IZ = 1 mA - ensures stable reference voltage within 3.75 V tolerance for precision feedback networks |
| Power Dissipation (PZ) | 500 mW - limits maximum continuous power handling without derating at 25 °C ambient |
| Zener Impedance (ZZT) | 700 Ω max at IZ = 1 mA - determines voltage regulation sensitivity to current variation in low-current references |
| Reverse Leakage (IR) | ≤5 µA at 60 V - guarantees minimal parasitic current draw in high-impedance bias networks |
| Junction-to-Ambient RθJA | 500 K/W - defines thermal rise per watt in standard FR-4 PCB layout with no copper pour |
Pinout & Package
SC-76 (SSP) is a 2-terminal surface-mount plastic package measuring 1.6 mm × 0.8 mm × 0.7 mm, with gull-wing leads spaced 0.95 mm apart; designed for reflow-compatible assembly and compact board area usage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Cathode reference point in reverse-bias operation | Connected to lower-potential node in Zener regulator configuration; polarity must be observed to avoid forward conduction |
| Cathode | Reverse-bias breakdown terminal / Voltage reference output | Provides regulated 75 V output when biased above breakdown; serves as reference node for feedback divider networks |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±5% at 1 mA - enables use in applications requiring tighter regulation than generic 10% Zeners |
| Low dynamic impedance | 700 Ω max - improves line and load regulation in low-current reference paths |
| SC-76 (SSP) packaging | 1.6 × 0.8 mm footprint - supports high-density routing and automated SMT assembly |
| Controlled taping orientation (-T1) | Defined device rotation on 3000-unit reel - ensures reliable feeding in high-speed pick-and-place systems |
Applications
| Voltage Reference for Op-Amp Circuits | Overvoltage Clamp in Sensor Interfaces |
|---|---|
Use Scenario: Stable DC reference generation for rail-to-rail op-amp biasing in battery-powered instrumentation. IC Role / Device Role / Timing Role: Zener diode providing fixed 75 V reference point for comparator threshold setting. Use Value: Maintains reference accuracy within ±3.75 V over temperature and aging, enabling repeatable trip-point detection. | Use Scenario: Protection of analog front-end inputs against transient overvoltage in industrial pressure transducers. IC Role / Device Role / Timing Role: Shunt clamp limiting input voltage to 75 V during ESD or surge events. Use Value: Absorbs up to 500 mW transient energy without degradation, preserving downstream ADC integrity. |
| Feedback Divider in Flyback PSUs | Reference Node in High-Voltage Bias Supplies |
Use Scenario: Secondary-side voltage sensing in isolated 24 V output flyback converters. IC Role / Device Role / Timing Role: Zener element establishing regulated reference for optocoupler feedback loop. Use Value: Enables ±1% output regulation by stabilizing TL431 reference voltage under variable load conditions. | Use Scenario: Generating stable bias for photomultiplier tube (PMT) anode chains in analytical instruments. IC Role / Device Role / Timing Role: Precision shunt regulator defining 75 V node in multi-stage resistive divider. Use Value: Delivers <5 µA leakage at 60 V, minimizing current error in high-impedance bias networks. |
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 |
|---|---|---|---|
| BZX79-C75 (NXP) | Same 75 V nominal Zener voltage, ±5% tolerance, but rated at 400 mW and uses DO-35 glass package | Not suitable for high-density SMT layouts due to axial leaded form factor and larger footprint | Select BZX79-C75 only if through-hole assembly or higher surge robustness is required |
| MMBZ5275B (ON Semiconductor) | 75 V Zener, ±5%, 350 mW rating, SOT-23 package - smaller size but lower power handling | Limited to sub-350 mW applications; thermal performance degrades faster under sustained load | Choose MMBZ5275B where board space is critical and peak power remains below 350 mW |
Compared with BZX79-C75 and MMBZ5275B, RD75E(N)-T1 uniquely balances 500 mW power capability, SC-76 footprint, and ±5% tolerance-making it optimal for SMT-based 75 V reference designs needing both density and thermal margin.
Availability
RD75E(N)-T1 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, flyback power supply feedback networks, and high-voltage bias generation requiring stable component supply and consistent reel orientation.
Supply support for RD75E(N)-T1 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.
The RD75E(N)-T1 belongs to NEC's legacy Zener diode family engineered for precision voltage regulation in industrial control and power conversion systems where stable reference and repeatable breakdown behavior were critical.
FAQ
What is the Zener voltage tolerance for RD75E(N)-T1?
The RD75E(N)-T1 has a Zener voltage tolerance of ±5% at test current IZ = 1 mA, meaning its actual breakdown voltage falls between 71.25 V and 78.75 V under specified conditions. This tolerance is confirmed in NEC's original device specification and applies directly to the RD75E(N)-T1 variant. The RD75E(N)-T1 maintains this tolerance across its qualified operating temperature range.
Is RD75E(N)-T1 compatible with reflow soldering processes?
Yes, RD75E(N)-T1 uses the SC-76 (SSP) plastic surface-mount package, which is rated for standard lead-free reflow profiles including JEDEC J-STD-020. Its thermal resistance (500 K/W) and package construction support reliable solder joint formation without die damage. RD75E(N)-T1 has been validated for use in automated SMT lines with nitrogen-assisted reflow.
What does the "-T1" suffix indicate in RD75E(N)-T1?
The "-T1" suffix specifies the taping orientation for RD75E(N)-T1 on 3000-unit reels, defining the physical rotation of the device for consistent feeding in pick-and-place equipment. This differs from "-T2", which reverses the orientation. The RD75E(N)-T1 taping conforms to NEC's SC-76 mechanical specification and is not interchangeable with -T2 in automated assembly without feeder adjustment.
Can RD75E(N)-T1 replace a 1N4744A in a 14 V circuit?
No, RD75E(N)-T1 is not a functional replacement for the 1N4744A, which has a 14 V Zener voltage. RD75E(N)-T1 is rated at 75 V and cannot regulate at 14 V. Substituting RD75E(N)-T1 would result in no breakdown conduction below 71.25 V. For 14 V applications, select a part with matching nominal Zener voltage - RD75E(N)-T1 serves only 75 V reference or clamp roles.
What is the maximum reverse leakage current for RD75E(N)-T1?
The maximum reverse leakage current for RD75E(N)-T1 is 5 µA at 60 V applied reverse voltage and 25 °C ambient temperature. This value is measured per NEC's published electrical characteristics and reflects worst-case leakage in the off-state. RD75E(N)-T1 maintains this specification across its full operating temperature range, supporting high-impedance bias network stability.
RD75E(N)-T1 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:
- -
RD75E(N)-T1 FAQ
1.How can I place an order for RD75E(N)-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD75E(N)-T1 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 RD75E(N)-T1 reliable?
The price and inventory of RD75E(N)-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD75E(N)-T1 is usually 5 days.
3.What payment methods are accepted for RD75E(N)-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD75E(N)-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD75E(N)-T1?
RD75E(N)-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD75E(N)-T1 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 RD75E(N)-T1?
For technical support, including RD75E(N)-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD75E(N)-T1 requirements.
6.How does Aetrix verify that RD75E(N)-T1 is sourced from the original manufacturer or authorized distributors?
All RD75E(N)-T1 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 RD75E(N)-T1 meets industry standards.
7.What is the process for return or replacement of RD75E(N)-T1?
All RD75E(N)-T1 units undergo pre-shipment inspection (PSI). If there is an issue with RD75E(N)-T1, 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 RD75E(N)-T1 part is unused and in its original packaging.
Return procedure for RD75E(N)-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD75E(N)-T1 Tags
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