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Renesas NNCD27G(0)-T1-AT
- Part No.:
- NNCD27G(0)-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NNCD27G(0)-T1-AT.pdf
- Description:
- NNCD27G(0)-T1-AT - ELECTROSTATIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
NNCD27G(0)-T1-AT from Renesas Electronics is a quad-channel electrostatic discharge (ESD) noise clipping diode in a 5-pin Mini Mold (SC-74A) common-anode package, rated for 25.1–28.9 V breakdown voltage, ≤70 Ω dynamic impedance at 2 mA, and 30 kV IEC 1000-4-2 ESD endurance. It protects external interface circuits such as parallel ports, CD-ROM connectors, and peripheral cables against transient overvoltage events.
For engineers reviewing the NNCD27G(0)-T1-AT datasheet, NNCD27G(0)-T1-AT pinout, NNCD27G(0)-T1-AT application, or NNCD27G(0)-T1-AT equivalent, key selection criteria include its 25–29 V clamping range, 25 pF typical reverse capacitance at 0 V, 21 µA max leakage at 21 V, 85 W surge power rating (10 µs pulse), and compatibility with automated SMT placement due to its SC-74A footprint.
Technical Context
This device implements four independent cathode-to-common-anode clipping paths in a single compact package, enabling simultaneous protection of four signal lines without discrete component duplication. Its design targets fast transient response (<1 ns turn-on) and low clamping voltage under high-current ESD pulses per IEC 1000-4-2 Level 4 (±30 kV contact discharge).
The diode operates in avalanche breakdown mode during ESD events, with specified dynamic impedance (Zz = 70 Ω max at 2 mA) ensuring predictable voltage clamping behavior. It is not intended for continuous forward conduction or DC voltage regulation - only transient suppression in signal-line protection applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 25.1–28.9 V (min/max at 2 mA; defines clamping onset threshold for ESD transients) |
| Dynamic Impedance (Zz) | ≤70 Ω at 2 mA (determines voltage overshoot during 30 kV ESD pulse) |
| Reverse Leakage (IR) | ≤2 µA at 21 V (ensures minimal signal loading on protected lines at operating bias) |
| Reverse Capacitance (Ct) | 25 pF at 0 V (low enough to avoid signal integrity degradation on <10 MHz digital interfaces) |
| Surge Power (PRSM) | 85 W at t = 10 µs (supports single-pulse IEC 1000-4-2 compliance without thermal failure) |
| ESD Withstand | ≥30 kV per IEC 1000-4-2 (validated contact discharge level for industrial-grade interface protection) |
| Package | 5-pin Mini Mold (SC-74A); 2.9 × 1.9 mm body; surface-mount compatible |
Pinout & Package
Package: 5-pin Mini Mold (SC-74A), molded plastic, common-anode configuration. Dimensions: 2.9 ± 0.2 mm × 1.9 mm × 1.4 mm max height. Lead pitch: 0.65 +0.1/−0.15 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 (K1) | Protected signal line #1; connects to I/O trace requiring ESD clamping |
| 2 | Anode (A) | Common anode node; tied to ground or low-impedance return path for all four channels |
| 3 | Cathode 2 (K2) | Protected signal line #2; electrically isolated from K1/K3/K4 except via shared anode |
| 4 | Cathode 3 (K3) | Protected signal line #3; enables compact multi-line protection without discrete diodes |
| 5 | Cathode 4 (K4) | Protected signal line #4; supports full quad-signal interface protection (e.g., 4-bit parallel bus) |
Key Features
| Feature | Design Value |
|---|---|
| IEC 1000-4-2 Level 4 compliance | Validated ≥30 kV contact discharge endurance - meets industrial interface immunity requirements |
| Quad-channel common-anode topology | Four independent clipping paths share one grounded anode, reducing PCB area vs. discrete diodes |
| Low dynamic impedance (70 Ω max) | Minimizes peak clamped voltage during 30 kV ESD event - critical for protecting 3.3 V/5 V logic inputs |
| 25 pF reverse capacitance | Preserves signal integrity on low-speed digital interfaces (e.g., parallel printer, PS/2, legacy audio) |
| SC-74A SMT package | Enables high-density layout and reflow-compatible automated assembly - no through-hole constraints |
Applications
| Parallel Interface Protection | Legacy Peripheral Port Protection |
|---|---|
Use Scenario: Protecting bidirectional 8-bit parallel data bus between PC and printer or CD-ROM drive against ESD from cable handling or connector insertion. IC Role / Device Role / Timing Role: Quad-channel transient voltage suppressor placed at connector side, clamping all four critical signal pairs (e.g., STROBE, ACK, BUSY, SELECT) simultaneously. Use Value: Prevents latch-up or input-stage damage in host controller ICs by limiting transient voltage to ≤29 V during ±30 kV contact discharge. | Use Scenario: Shielding PS/2 keyboard/mouse port pins from user-induced ESD during hot-plug events in office equipment. IC Role / Device Role / Timing Role: Common-anode ESD clamp on DATA and CLK lines plus two auxiliary control lines (e.g., RESET, IRQ), sharing ground return. Use Value: Maintains functional reliability without adding four separate SOD-323 diodes - saves 3.2 mm² PCB area and reduces BOM count. |
| Industrial Control Panel Interface | Audio/Video Equipment External I/O |
Use Scenario: Safeguarding front-panel pushbutton and LED driver signal lines on programmable logic controllers exposed to factory-floor ESD. IC Role / Device Role / Timing Role: ESD shunt for four low-voltage (≤5 V) control signals routed through unshielded ribbon cables to operator panels. Use Value: Eliminates need for ferrite beads or RC filters while meeting IEC 61000-4-2 immunity requirements for Class A industrial equipment. | Use Scenario: Clamping analog audio line inputs (L/R + two control lines) on AV receivers or set-top boxes connected to external RCA or mini-jack cables. IC Role / Device Role / Timing Role: Low-capacitance ESD protection element placed before op-amp input stages to prevent CMOS input damage. Use Value: 25 pF capacitance avoids high-frequency roll-off in 20 kHz audio band; 30 kV rating exceeds consumer product safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DRYR | Lower clamping voltage (≈12 V), higher capacitance (12 pF per channel), 12 kV IEC 61000-4-2 rating | Targeted at high-speed USB/USB-C interfaces; insufficient for 30 kV industrial requirements | Select only for consumer-grade, low-voltage, high-speed data lines where 30 kV immunity is not mandated |
| SMAJ28A | Single-channel SMA package; 28 V standoff, 400 W peak power, but no multi-line integration | Requires four discrete devices and larger PCB area; lacks common-anode convenience | Choose when higher surge power margin is needed and board space permits discrete implementation |
Compared with TPD4E001DRYR and SMAJ28A, the NNCD27G(0)-T1-AT uniquely delivers quad-channel 30 kV ESD protection in a 2.9 × 1.9 mm footprint with 25 pF capacitance - making it optimal for space-constrained industrial parallel interfaces where regulatory-level immunity is mandatory.
Availability
NNCD27G(0)-T1-AT is available at Aetrix Electronics and suitable for industrial control panels, legacy peripheral interfaces, audio/video equipment I/O, and embedded system debug ports requiring stable component supply and long-term obsolescence management.
Supply support for NNCD27G(0)-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 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and interface solutions.
The NNCD series was developed by Renesas (formerly NEC) specifically for ESD protection of external interface circuits in industrial and computing equipment, emphasizing high-kV immunity, multi-channel integration, and SMT manufacturability.
FAQ
What is the maximum operating temperature for NNCD27G(0)-T1-AT?
The NNCD27G(0)-T1-AT has a maximum junction temperature (Tj) of 150 °C and a storage temperature range of –55 °C to +150 °C. Its power derating curve shows usable dissipation down to 100 mW at 100 °C ambient, supporting operation in enclosed industrial enclosures without forced cooling. Always verify thermal layout margins using the transient thermal impedance data in Figure 4 of the original datasheet.
Does NNCD27G(0)-T1-AT support bi-directional signal protection?
No - the NNCD27G(0)-T1-AT is a unidirectional common-anode device designed to clamp positive transients to ground. It does not protect against negative-going surges on cathode lines unless paired with a complementary device or used in a dual-rail configuration. For true bi-directional protection, consider a dedicated TVS array like the PUSB3FR4.
Can NNCD27G(0)-T1-AT be used on 3.3 V logic lines?
Yes, but with caution: its 25.1–28.9 V breakdown voltage means it will not conduct during normal 3.3 V operation, preserving signal integrity. However, it only activates during severe ESD events (>25 V), so it provides robust protection without interfering with logic levels - unlike lower-voltage clamps that risk leakage or false triggering.
What is the lead finish and RoHS status of NNCD27G(0)-T1-AT?
The NNCD27G(0)-T1-AT uses matte tin (Sn) lead finish and complies with EU RoHS Directive 2011/65/EU. Renesas confirms halogen-free packaging and lead-free solder compatibility per J-STD-020 moisture sensitivity level 1 (MSL-1), enabling standard reflow profiles without pre-baking.
Is NNCD27G(0)-T1-AT qualified for automotive applications?
No - the NNCD27G(0)-T1-AT carries Renesas' "Standard" quality grade, approved for computers, office equipment, and industrial robots per document C11531E. It is not AEC-Q200 qualified and lacks the extended temperature range, vibration resistance, or failure-rate validation required for automotive use.
NNCD27G(0)-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 21V (Max)
- Voltage - Breakdown (Min):
- 25.1V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 25pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-Mini Mold
NNCD27G(0)-T1-AT FAQ
1.How can I place an order for NNCD27G(0)-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD27G(0)-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 NNCD27G(0)-T1-AT reliable?
The price and inventory of NNCD27G(0)-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 NNCD27G(0)-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD27G(0)-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD27G(0)-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD27G(0)-T1-AT?
NNCD27G(0)-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD27G(0)-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 NNCD27G(0)-T1-AT?
For technical support, including NNCD27G(0)-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD27G(0)-T1-AT requirements.
6.How does Aetrix verify that NNCD27G(0)-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD27G(0)-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 NNCD27G(0)-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD27G(0)-T1-AT?
All NNCD27G(0)-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD27G(0)-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 NNCD27G(0)-T1-AT part is unused and in its original packaging.
Return procedure for NNCD27G(0)-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD27G(0)-T1-AT Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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