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Renesas NNCD6.8DA-T1-AT
- Part No.:
- NNCD6.8DA-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
NNCD6.8DA-T1-AT.pdf
- Description:
- NNCD6.8DA-T1-AT - ELECTROSTATIC
- Quantity:
- Payment:
- Shipping:
Inventory:40,506
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Product details
Overview
NNCD6.8DA-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 Level 4 (±30 kV contact/±30 kV air) protection of external interface circuits. It features a breakdown voltage of 6.44–7.17 V at 5 mA, dynamic impedance of 30 Ω, reverse leakage ≤2 μA at 6.8 V, capacitance of 110 pF at 0 V/1 MHz, and surge reverse power rating of 85 W (10 μs pulse).
For engineers reviewing the NNCD6.8DA-T1-AT datasheet, NNCD6.8DA-T1-AT pinout, NNCD6.8DA-T1-AT application, or NNCD6.8DA-T1-AT equivalent, key selection criteria include clamping voltage stability under ESD transients, low dynamic impedance for fast energy diversion, low capacitance to preserve signal integrity on high-speed lines, and Pb-free SC-76 footprint compatibility with automated SMT assembly.
Technical Context
This device operates as a unidirectional transient voltage suppression (TVS) diode optimized for electrostatic discharge immunity in consumer and industrial interface ports. Its clamping behavior is defined by sharp avalanche breakdown at nominal 6.8 V, with guaranteed VBR tolerance (±5.5%) and low ZZ enabling rapid voltage limiting during sub-100 ns ESD events.
The SC-76 package provides thermal resistance suitable for surface mounting on standard 30 mm × 30 mm × 1.6 mm FR-4 PCBs, supporting 200 mW steady-state dissipation and 85 W single-pulse surge handling. Its cathode-indicated polarity ensures correct orientation in series or parallel protection configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 6.44–7.17 V at 5 mA - defines minimum trigger threshold for ESD clamping; tight tolerance ensures predictable protection onset across production lots. |
| Dynamic Impedance (ZZ) | 30 Ω - determines voltage overshoot during transient; lower value reduces clamped peak voltage seen by protected IC. |
| Capacitance (Ct) | 110 pF at 0 V, 1 MHz - impacts signal rise time and insertion loss on data lines; suitable for USB 1.1, RS-232, and low-speed audio interfaces. |
| ESD Withstand | ±30 kV per IEC61000-4-2 (contact & air) - meets highest industrial immunity requirement without derating. |
| Surge Reverse Power (PRSM) | 85 W at tT = 10 μs - supports single-event robustness against fast, high-energy discharges typical of human-body-model ESD. |
| Reverse Leakage (IR) | ≤2 μA at VR = 6.8 V - ensures minimal standby current draw and no measurable loading on bias-sensitive analog inputs. |
Pinout & Package
Package: SC-76 (2-pin Super Mini Mold), dimensions 2.5 ± 0.15 mm × 1.7 ± 0.1 mm × 1.25 ± 0.1 mm, cathode indicated by marking band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected signal line; conducts during positive ESD transients when referenced to ground. |
| Cathode | Ground-reference terminal | Connected to system ground plane; establishes clamping reference and completes current path during ESD events. |
Key Features
| Feature | Design Value |
|---|---|
| IEC61000-4-2 Level 4 compliance | Validated for ±30 kV contact and air discharge - eliminates need for additional external ESD staging in cost-sensitive consumer designs. |
| Pb-free lead finish | Pure Sn (Tin) plating - satisfies RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1 requirements without solderability compromise. |
| Low-profile SC-76 footprint | 1.25 mm height - enables use in space-constrained applications such as portable media players and thin client interfaces. |
| Wide VBR product family | 32 variants from 2.0 V to 39 V - allows precise matching to IC I/O rail voltages (e.g., NNCD6.8DA-T1-AT aligns with 6.8 V LDO outputs or legacy logic rails). |
Applications
| USB 1.1 Peripheral Port Protection | RS-232 Transceiver Interface |
|---|---|
Use Scenario: Protecting D+ and D− lines of a USB 1.1 printer or scanner interface from user-handling ESD events. IC Role / Device Role / Timing Role: Clamping diode placed between signal line and chassis ground, operating in avalanche breakdown mode during ESD pulses. Use Value: 110 pF capacitance avoids signal distortion on 12 Mbps full-speed signaling; 30 Ω ZZ limits clamped voltage to <12 V, staying below USB transceiver absolute maximum ratings. |
Use Scenario: Shielding RS-232 driver/receiver ICs (e.g., MAX232) on industrial control panels exposed to field maintenance personnel. IC Role / Device Role / Timing Role: Unidirectional shunt element connected from TX/RX lines to local ground, activated only during negative ESD transients. Use Value: 6.44–7.17 V VBR matches common RS-232 receiver input thresholds; ±30 kV rating exceeds EN 61000-4-2 requirements for factory environments. |
| Audio Line Input Protection | Legacy Parallel Printer Interface |
Use Scenario: Safeguarding line-in jacks on home theater receivers or PC sound cards against headphone plug insertion ESD. IC Role / Device Role / Timing Role: Low-capacitance clamp on analog audio path, placed before op-amp input stage to prevent latch-up or damage. Use Value: 110 pF adds negligible phase shift below 20 kHz; ≤2 μA IR prevents DC offset drift in high-impedance microphone preamp circuits. |
Use Scenario: Hardening Centronics-style parallel port pins (STROBE, ACK, BUSY) on POS terminals or label printers. IC Role / Device Role / Timing Role: Discrete ESD suppressor mounted directly at connector footprint, diverting charge before it reaches ASIC-level buffers. Use Value: 85 W PRSM withstands repeated 10 μs surges from cable handling; SC-76 size fits dense 25-pin header layouts without trace rerouting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR (Texas Instruments) | Bidirectional, 12 pF capacitance, 5.5 V VBR, SOT-553 package | Better suited for high-speed USB 2.0 or HDMI where ultra-low capacitance is critical; not unidirectional like NNCD6.8DA-T1-AT | Select when protecting differential pairs requiring symmetrical clamping and sub-15 pF loading. |
| ESD9B5.0ST5G (ON Semiconductor) | Unidirectional, 5.0 V VBR, 30 pF, SOD-923 package | Lower clamping voltage targets 5 V logic rails; smaller footprint but lower surge rating (30 W vs. 85 W) | Select for compact 5 V microcontroller GPIO protection where board space is constrained and ESD threat level is moderate. |
Compared with TPD2E001DRYR and ESD9B5.0ST5G, NNCD6.8DA-T1-AT offers higher surge robustness (85 W) and tighter VBR tolerance for 6.8 V systems, at the expense of higher capacitance-making it optimal for legacy interface protection where signal bandwidth is limited but ESD severity is high.
Availability
NNCD6.8DA-T1-AT is available at Aetrix Electronics and suitable for USB 1.1 peripheral ports, RS-232 industrial interfaces, and legacy parallel printer connections requiring stable component supply and long-term lifecycle support.
Supply support for NNCD6.8DA-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, and power devices for industrial, automotive, and consumer markets.
NNCD6.8DA-T1-AT belongs to Renesas' legacy ESD protection diode family developed for cost-effective, discrete-level interface hardening-targeting consumer electronics, office equipment, and industrial control panels where Standard-grade reliability suffices.
FAQ
What is the exact breakdown voltage range for NNCD6.8DA-T1-AT?
The NNCD6.8DA-T1-AT has a guaranteed breakdown voltage (VBR) range of 6.44 V to 7.17 V at 5 mA test current, measured using a 40 ms pulse per the original NEC datasheet D18879EJ2V0DS. This tolerance reflects manufacturing consistency for reliable ESD trigger point alignment in 6.8 V rail applications.
Is NNCD6.8DA-T1-AT unidirectional or bidirectional?
NNCD6.8DA-T1-AT is a unidirectional ESD protection diode, with anode and cathode terminals clearly defined. Its electrical characteristics-including reverse leakage and clamping behavior-are specified only for forward-biased (anode-to-ground) configuration during negative transients, confirming its unidirectional design.
What does the "-T1-AT" suffix indicate in NNCD6.8DA-T1-AT?
The "-T1-AT" suffix denotes tape-and-reel packaging (3000 units per reel) and Pb-free (pure Sn) lead plating, as specified in the ordering information section of the datasheet. "T1" refers to the tape format, and "AT" confirms RoHS-compliant termination without lead content in external electrodes.
Can NNCD6.8DA-T1-AT be used for bidirectional signal lines like USB D+ and D−?
Yes, NNCD6.8DA-T1-AT can protect bidirectional lines when used in back-to-back configuration (two diodes anode-to-anode), as shown in typical application circuits for parallel interfaces. However, for native bidirectional performance without extra components, a dedicated bidirectional part like TPD2E001DRYR may simplify layout.
What is the thermal limitation for continuous operation of NNCD6.8DA-T1-AT?
NNCD6.8DA-T1-AT is rated for 200 mW power dissipation when mounted on a 30 mm × 30 mm × 1.6 mm glass epoxy PCB, per Figure 1 in the datasheet. Ambient temperature derating begins above 25°C, reaching zero dissipation capability at 150°C ambient-consistent with its 150°C maximum junction temperature rating.
NNCD6.8DA-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):
- 3.5V (Max)
- Voltage - Breakdown (Min):
- 6.44V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 110pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Super Mini Mold
NNCD6.8DA-T1-AT FAQ
1.How can I place an order for NNCD6.8DA-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD6.8DA-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 NNCD6.8DA-T1-AT reliable?
The price and inventory of NNCD6.8DA-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 NNCD6.8DA-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD6.8DA-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD6.8DA-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD6.8DA-T1-AT?
NNCD6.8DA-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD6.8DA-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 NNCD6.8DA-T1-AT?
For technical support, including NNCD6.8DA-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD6.8DA-T1-AT requirements.
6.How does Aetrix verify that NNCD6.8DA-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD6.8DA-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 NNCD6.8DA-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD6.8DA-T1-AT?
All NNCD6.8DA-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD6.8DA-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 NNCD6.8DA-T1-AT part is unused and in its original packaging.
Return procedure for NNCD6.8DA-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD6.8DA-T1-AT Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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