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Renesas NNCD9.1DA-T1-AT
- Part No.:
- NNCD9.1DA-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
NNCD9.1DA-T1-AT.pdf
- Description:
- NNCD9.1DA-T1-AT - ELECTROSTATIC
- Quantity:
- Payment:
- Shipping:
Inventory:129,000
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Product details
Overview
NNCD9.1DA-T1-AT from Renesas Electronics is an ESD noise clipping diode in SC-76 (2-pin Super Mini Mold) package, with breakdown voltage 8.53–9.58 V, dynamic impedance ≤30 Ω at 5 mA, reverse leakage ≤2 μA at 6.0 V, capacitance 85 pF at 1 MHz, and IEC61000-4-2 rated ESD protection up to ±30 kV for external interface circuit protection.
For engineers reviewing the NNCD9.1DA-T1-AT datasheet, NNCD9.1DA-T1-AT pinout, NNCD9.1DA-T1-AT application, or NNCD9.1DA-T1-AT equivalent, this page delivers verified electrical specs, validated SC-76 terminal mapping, real-world ESD protection use cases, and two confirmed alternative parts for interface-level transient suppression.
Technical Context
This device operates as a unidirectional clamping diode optimized for electrostatic discharge immunity per IEC61000-4-2. It conducts during overvoltage transients above its specified breakdown voltage (VBR), limiting voltage across protected lines by diverting surge current to ground.
Its low dynamic impedance (≤30 Ω) ensures rapid voltage clamping under fast-rising ESD pulses, while its 85 pF capacitance at 1 MHz maintains signal integrity on high-speed data lines such as USB 2.0 or audio interfaces without excessive loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 8.53–9.58 V - defines clamping threshold for ESD events; ensures protection starts before downstream IC damage occurs |
| Dynamic Impedance | ≤30 Ω at 5 mA - enables low-voltage clamping under surge current, minimizing peak let-through voltage |
| Reverse Leakage | ≤2 μA at 6.0 V - guarantees minimal standby power loss and signal distortion in DC-coupled paths |
| Capacitance | 85 pF at 1 MHz - compatible with low-to-moderate speed interfaces (e.g., UART, I²C, analog audio) without bandwidth degradation |
| ESD Withstand | ±30 kV per IEC61000-4-2 - meets highest contact discharge level for consumer and industrial external ports |
| Surge Power | 85 W (10 μs pulse) - handles single-event ESD surges without parametric shift or failure |
| Package | SC-76 (2-pin Super Mini Mold) - 1.7 × 2.5 mm footprint supports high-density PCB layout near connectors |
Pinout & Package
SC-76 package: 2-pin surface-mount molded case with cathode marking; dimensions 1.7±0.1 mm × 2.5±0.15 mm × 1.25±0.1 mm height; lead-free pure tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected signal line; conducts during positive transients when cathode is grounded |
| Cathode | Ground reference | Connected to system ground plane; provides low-impedance path for ESD current return |
Key Features
| Feature | Design Value |
|---|---|
| IEC61000-4-2 compliant clamping | Validated ±30 kV contact discharge performance - eliminates need for external test validation in certified designs |
| Low dynamic impedance | ≤30 Ω at 5 mA - reduces clamped voltage to <12 V during 8/20 μs surges, protecting 3.3 V/5 V logic |
| Controlled capacitance | 85 pF at 1 MHz - avoids signal rise-time degradation on sub-10 MHz digital or analog lines |
| Pb-free construction | Pure Sn plating, RoHS-compliant - satisfies environmental compliance without solderability compromise |
Applications
| USB Port Protection | HDMI Hot-Plug Detection Line |
|---|---|
Use Scenario: Protects USB 2.0 D+ and D− lines against ESD events during cable insertion/removal in consumer peripherals. IC Role / Device Role / Timing Role: Clamping diode placed between signal line and ground, conducting only during overvoltage transients. Use Value: Prevents latch-up or gate oxide damage in USB transceivers by limiting peak line voltage to <12 V during ±30 kV contact discharge. | Use Scenario: Shields HDMI hot-plug detect (HPD) line from ESD when connecting/disconnecting displays. IC Role / Device Role / Timing Role: Unidirectional shunt element referenced to chassis ground, activated only above 8.53 V. Use Value: Maintains HPD logic integrity (0–5 V range) while surviving repeated ±30 kV discharges without parameter drift. |
| Audio Jack ESD Guard | Industrial RS-232 Interface |
Use Scenario: Installed on 3.5 mm stereo headphone jack signal paths to prevent user-hand ESD from damaging codec ICs. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp on left/right channel and ground-return paths. Use Value: 85 pF capacitance avoids audible pop/noise artifacts; ±30 kV rating covers worst-case human-body-model discharge. | Use Scenario: Placed on RS-232 TX/RX lines of programmable logic controllers exposed to factory-floor ESD. IC Role / Device Role / Timing Role: Transient voltage suppressor referenced to local ground, operating independently of RS-232 driver/receiver bias. Use Value: 85 W surge rating handles multiple ESD strikes; ≤2 μA leakage prevents false logic states on idle lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 2-channel, 15 pF per line, 12 kV IEC61000-4-2, SOT-553 package | Lower capacitance suits USB 2.0/MIPI; dual-line integration reduces board space vs. discrete diodes | Select when protecting differential pairs with strict <20 pF budget and multi-line routing efficiency is critical |
| ESD9X5.0ST5G | Single-line, 65 pF, 30 kV IEC61000-4-2, SOD-923 package (1.0 × 0.6 mm) | Smaller footprint than SC-76; higher leakage (≤5 μA) but same clamping voltage range | Choose for ultra-compact layouts where 0.7 mm² area saving outweighs minor leakage increase |
Compared with TPD2E001DRYR and ESD9X5.0ST5G, the NNCD9.1DA-T1-AT offers higher surge power handling (85 W vs. ~40 W), larger thermal mass for repeated ESD events, and proven reliability in legacy industrial designs-making it preferred for cost-sensitive, single-line, moderate-speed protection where board area is not constrained.
Availability
NNCD9.1DA-T1-AT is available at Aetrix Electronics and suitable for USB port protection, HDMI hot-plug detection, audio jack ESD guard, and industrial RS-232 interface applications requiring stable component supply and long-term lifecycle support.
Supply support for NNCD9.1DA-T1-AT 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 formed in 2010 via merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and timing solutions.
NNCD9.1DA-T1-AT belongs to Renesas' legacy ESD protection diode family designed for cost-effective, discrete-level IEC61000-4-2 compliance in consumer and industrial external interface circuits.
FAQ
What is the breakdown voltage range of the NNCD9.1DA-T1-AT?
The NNCD9.1DA-T1-AT has a guaranteed breakdown voltage range of 8.53 V to 9.58 V at 5 mA test current, measured using a 40 ms pulse per the official Renesas datasheet D18879EJ2V0DS. This range ensures consistent clamping behavior across production lots and defines the minimum voltage at which the NNCD9.1DA-T1-AT begins conducting during ESD events.
Does the NNCD9.1DA-T1-AT meet IEC61000-4-2 ESD immunity requirements?
Yes, the NNCD9.1DA-T1-AT is explicitly rated for ±30 kV contact discharge per IEC61000-4-2, as confirmed in the Renesas datasheet D18879EJ2V0DS. This rating applies to both positive and negative ESD pulses and was verified using the standard 150 pF/330 Ω test network-making the NNCD9.1DA-T1-AT suitable for front-end protection of external ports in certified end equipment.
What is the capacitance of the NNCD9.1DA-T1-AT and how does it affect signal integrity?
The NNCD9.1DA-T1-AT exhibits a typical capacitance of 85 pF at 1 MHz and 0 V bias, per the Renesas datasheet. This value is appropriate for protecting low-to-moderate speed signals (e.g., UART, I²C, analog audio, RS-232), where added load does not significantly degrade rise time or cause reflections-unlike high-speed interfaces like USB 3.0 or PCIe, which require <2 pF devices.
Is the NNCD9.1DA-T1-AT RoHS-compliant and lead-free?
Yes, the NNCD9.1DA-T1-AT uses pure tin (Sn) lead plating and contains no lead in external electrodes or other parts, satisfying RoHS Directive 2011/65/EU requirements. This Pb-free construction is documented in the "Ordering Information" section of the Renesas datasheet D18879EJ2V0DS and verified through material declarations.
What package type does the NNCD9.1DA-T1-AT use and what are its dimensions?
The NNCD9.1DA-T1-AT uses the SC-76 (2-pin Super Mini Mold) package, measuring 1.7±0.1 mm in length, 2.5±0.15 mm in width, and 1.25±0.1 mm in height. Its cathode is marked on the top surface, and the package is optimized for reflow soldering on standard FR-4 PCBs-details confirmed in the "Package Drawing" section of the Renesas datasheet D18879EJ2V0DS.
NNCD9.1DA-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6V (Max)
- Voltage - Breakdown (Min):
- 8.53V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 85pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Super Mini Mold
NNCD9.1DA-T1-AT FAQ
1.How can I place an order for NNCD9.1DA-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD9.1DA-T1-AT 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 NNCD9.1DA-T1-AT reliable?
The price and inventory of NNCD9.1DA-T1-AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NNCD9.1DA-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD9.1DA-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD9.1DA-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD9.1DA-T1-AT?
NNCD9.1DA-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD9.1DA-T1-AT 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 NNCD9.1DA-T1-AT?
For technical support, including NNCD9.1DA-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD9.1DA-T1-AT requirements.
6.How does Aetrix verify that NNCD9.1DA-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD9.1DA-T1-AT 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 NNCD9.1DA-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD9.1DA-T1-AT?
All NNCD9.1DA-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD9.1DA-T1-AT, 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 NNCD9.1DA-T1-AT part is unused and in its original packaging.
Return procedure for NNCD9.1DA-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD9.1DA-T1-AT Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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