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Renesas NNCD12DA-T1-AT
- Part No.:
- NNCD12DA-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
NNCD12DA-T1-AT.pdf
- Description:
- NNCD12DA-T1-AT - ELECTROSTATIC D
- Quantity:
- Payment:
- Shipping:
Inventory:132,000
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Product details
Overview
NNCD12DA-T1-AT from Renesas Electronics is an ESD noise clipping diode in SC-76 (2-pin Super Mini Mold) package, designed for IEC61000-4-2 compliant external interface protection. It features a breakdown voltage of 11.38–12.64 V, dynamic impedance ≤35 Ω at 5 mA, reverse leakage ≤2 μA at 9.0 V, capacitance of 70 pF at 1 MHz, and 30 kV ESD immunity.
For engineers reviewing the NNCD12DA-T1-AT datasheet, NNCD12DA-T1-AT pinout, NNCD12DA-T1-AT application, or NNCD12DA-T1-AT equivalent, this device is selected for low-capacitance, high-surge ESD clamping in USB, audio, and parallel interface circuits where fast transient response and minimal signal distortion are required.
Technical Context
This diode operates as a unidirectional voltage-clamping device, conducting only when reverse voltage exceeds its specified breakdown range. Its low dynamic impedance ensures effective energy shunting during ESD events, while its 70 pF capacitance maintains signal integrity in data lines up to ~100 MHz.
Designed for surface-mount on standard 30 mm × 30 mm × 1.6 mm glass epoxy PCBs, it sustains 85 W surge reverse power (tT = 10 μs, single pulse) and operates within −55°C to +150°C storage temperature range, with maximum junction temperature of 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 11.38–12.64 V - defines precise clamping threshold for overvoltage transients |
| Dynamic Impedance (ZZ) | ≤35 Ω at 5 mA - enables low-voltage overshoot during ESD discharge |
| Reverse Leakage (IR) | ≤2 μA at 9.0 V - minimizes standby power loss in protected circuits |
| Capacitance (Ct) | 70 pF at 1 MHz - preserves signal fidelity in high-speed digital interfaces |
| ESD Immunity | ±30 kV per IEC61000-4-2 - meets highest contact discharge requirement for consumer electronics |
| Surge Reverse Power (PRSM) | 85 W (10 μs pulse) - handles high-energy ESD transients without failure |
| Power Dissipation (P) | 200 mW - supports continuous operation on standard FR-4 PCB layouts |
Pinout & Package
Package: SC-76 (2-pin Super Mini Mold), dimensions 1.7 ±0.1 mm × 2.5 ±0.15 mm × 1.25 ±0.1 mm, cathode indicated by marking band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to protected line (e.g., USB D+, audio IN); conducts during positive transients |
| Cathode | Clamping reference node | Connected to ground or low-impedance return; establishes breakdown voltage relative to GND |
Key Features
| Feature | Design Value |
|---|---|
| IEC61000-4-2 Level 4 compliance | Guarantees ±30 kV contact discharge protection without degradation |
| Low dynamic impedance (≤35 Ω) | Reduces clamped voltage overshoot below system-level damage thresholds |
| 70 pF capacitance at 1 MHz | Enables use on 480 Mbps USB 2.0 and 24 MHz parallel bus signals with <1% rise-time degradation |
| Pb-free pure Sn plating | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1 requirements |
| SC-76 footprint compatibility | Supports automated placement and reflow soldering on standard SMT lines |
Applications
| USB 2.0 Interface Protection | Audio Line ESD Suppression |
|---|---|
Use Scenario: Protecting USB D+ and D− lines in host peripherals against electrostatic discharge during hot-plug events. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between signal line and ground, activated only above 11.38 V reverse bias. Use Value: Prevents latch-up or oxide damage in USB transceivers by limiting transient voltage to <15 V peak under 30 kV ESD stress. | Use Scenario: Shielding analog audio input/output jacks (e.g., 3.5 mm TRS) from user-hand ESD in portable media players. IC Role / Device Role / Timing Role: Low-capacitance shunt element that remains non-conductive during normal 2 VPP audio swing but clamps >12 V transients. Use Value: Maintains THD <0.01% at 20 kHz while suppressing 30 kV discharges that would otherwise induce pop/crackle or ADC saturation. |
| Parallel Printer Port Protection | Industrial Control I/O Clamping |
Use Scenario: Safeguarding 8-bit parallel data bus (e.g., Centronics) and control lines (STROBE, ACK) in legacy industrial printers. IC Role / Device Role / Timing Role: Discrete clamping diode per signal line, referenced to chassis ground, with cathode tied to GND. Use Value: Absorbs multi-kV ESD pulses induced by cable handling without affecting DC logic levels or 1 MHz data timing margins. | Use Scenario: Protecting digital I/O pins of PLC modules exposed to field wiring in factory automation cabinets. IC Role / Device Role / Timing Role: Standalone ESD suppressor mounted at connector entry point, operating independently of microcontroller GPIO drivers. Use Value: Eliminates need for internal MCU ESD hardening, reducing firmware validation scope and enabling use of cost-optimized MCUs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9X3.3SFT5G | Lower VBR (3.3 V), higher Ct (110 pF), same SC-76 package | Better suited for 3.3 V logic rails; not suitable for 12 V signal clamping | Select NNCD12DA-T1-AT when clamping threshold must exceed 11 V; choose ESD9X3.3SFT5G for 3.3 V I/O protection. |
| TPD2E001DRYR | Dual-channel, 15 pF per line, 12 V VBR, DFN-6 package | Offers two-line protection in one device but requires different layout and thermal design | Use NNCD12DA-T1-AT for discrete, single-line, space-constrained placements; TPD2E001DRYR where dual-line integration reduces BOM count. |
Compared with ESD9X3.3SFT5G and TPD2E001DRYR, the NNCD12DA-T1-AT provides a uniquely optimized balance of 12 V clamping precision, 70 pF signal loading, and SC-76 manufacturability-making it preferred for legacy parallel interfaces and mixed-voltage systems requiring deterministic turn-on above 11 V.
Availability
NNCD12DA-T1-AT is available at Aetrix Electronics and suitable for USB 2.0 interface protection, analog audio line suppression, and parallel printer port safeguarding requiring stable component supply across long-lifecycle industrial programs.
Supply support for NNCD12DA-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, and power devices.
The NNCD series was developed by NEC Electronics (now Renesas) specifically for IEC61000-4-2-compliant ESD protection in consumer and industrial external interfaces, emphasizing low capacitance and repeatable clamping behavior.
FAQ
What is the exact breakdown voltage range for NNCD12DA-T1-AT?
The NNCD12DA-T1-AT has a guaranteed breakdown voltage range of 11.38 V to 12.64 V at 5 mA test current, measured per the IEC61000-4-2 standard. This range ensures consistent clamping behavior across production lots and enables reliable overvoltage protection in 12 V nominal signal paths. The NNCD12DA-T1-AT's tight VBR tolerance supports designs where precise turn-on voltage is critical to avoid false triggering or insufficient protection.
Does NNCD12DA-T1-AT support bidirectional ESD protection?
No, the NNCD12DA-T1-AT is a unidirectional ESD protection diode, configured with anode and cathode terminals to clamp only reverse-biased transients relative to ground. It does not provide symmetrical clamping for both polarities. For bidirectional protection, two NNCD12DA-T1-AT devices must be used in series opposition, or a dedicated bidirectional part like the PESD5V0S1BA should be selected. The NNCD12DA-T1-AT's datasheet explicitly specifies its operation as a single-polarity clamping device.
What is the maximum surge power rating of NNCD12DA-T1-AT and under what conditions?
The NNCD12DA-T1-AT supports a surge reverse power rating of 85 W under non-repetitive conditions with a 10 μs pulse width, as defined in Figure 5 of its datasheet. This rating applies when mounted on a 30 mm × 30 mm × 1.6 mm glass epoxy PCB. Exceeding this pulse width or applying repetitive surges beyond derated limits may cause thermal failure. The NNCD12DA-T1-AT's 85 W capability makes it suitable for high-energy ESD events encountered in industrial environments.
Is NNCD12DA-T1-AT RoHS compliant and lead-free?
Yes, the NNCD12DA-T1-AT is fully RoHS compliant and lead-free, with pure tin (Sn) plating on external electrodes as confirmed in the ordering information section of its datasheet. It meets JEDEC J-STD-609A Class 1 marking requirements and contains no intentionally added lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE). The NNCD12DA-T1-AT's Pb-free status is documented in Renesas' official product change notices and material declarations.
How does the 70 pF capacitance of NNCD12DA-T1-AT affect high-speed signal integrity?
The NNCD12DA-T1-AT's typical capacitance of 70 pF at 1 MHz introduces negligible loading on low-speed and medium-speed interfaces such as parallel printer ports (<2 MHz) and analog audio lines (<20 kHz), preserving signal rise time and amplitude. However, for USB 2.0 (480 Mbps), this capacitance may marginally increase bit error rate if placed directly on differential pairs without layout optimization. The NNCD12DA-T1-AT is best applied on individual lines with short stubs and proper grounding to maintain eye diagram compliance.
NNCD12DA-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):
- 9V (Max)
- Voltage - Breakdown (Min):
- 11.38V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 70pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Super Mini Mold
NNCD12DA-T1-AT FAQ
1.How can I place an order for NNCD12DA-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD12DA-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 NNCD12DA-T1-AT reliable?
The price and inventory of NNCD12DA-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 NNCD12DA-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD12DA-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD12DA-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD12DA-T1-AT?
NNCD12DA-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD12DA-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 NNCD12DA-T1-AT?
For technical support, including NNCD12DA-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD12DA-T1-AT requirements.
6.How does Aetrix verify that NNCD12DA-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD12DA-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 NNCD12DA-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD12DA-T1-AT?
All NNCD12DA-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD12DA-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 NNCD12DA-T1-AT part is unused and in its original packaging.
Return procedure for NNCD12DA-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD12DA-T1-AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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