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Renesas NNCD39DA-T1-AT
- Part No.:
- NNCD39DA-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
NNCD39DA-T1-AT.pdf
- Description:
- NNCD39DA-T1-AT - ELECTROSTATIC D
- Quantity:
- Payment:
- Shipping:
Inventory:42,000
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Product details
Overview
NNCD39DA-T1-AT from Renesas Electronics is a 2-pin SC-76 (Super Mini Mold) ESD noise clipping diode designed for transient voltage suppression in external interface circuits. It features a breakdown voltage of 37.0–41.0 V, dynamic impedance ≤100 Ω at 2 mA, reverse leakage ≤2 μA at 30 V, capacitance of 21 pF at 1 MHz, and IEC61000-4-2 rated ESD protection up to ±20 kV contact discharge. It is used in USB, HDMI, and audio jack protection on consumer electronics PCBs.
For engineers reviewing the NNCD39DA-T1-AT datasheet, NNCD39DA-T1-AT pinout, NNCD39DA-T1-AT application, or NNCD39DA-T1-AT equivalent, this page delivers verified electrical specs, package dimensions, real-world ESD protection use cases, and validated alternative parts for interface circuit hardening - all aligned with Renesas' D18879EJ2V0DS00 datasheet (2nd ed., Jan 2010).
Technical Context
This diode operates as a unidirectional clamping device in series with signal lines or across I/O pins to ground. Its low dynamic impedance (≤100 Ω) ensures rapid voltage clamping during ESD transients, while its 21 pF capacitance minimizes signal integrity impact on high-speed interfaces up to ~100 MHz.
The device meets IEC61000-4-2 Level 4 (±20 kV contact, ±30 kV air) and supports surge reverse power of 85 W (10 μs pulse). Its junction temperature rating of 150°C and −55°C to +150°C storage range enable reliable operation in industrial and consumer environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 37.0–41.0 V at 2 mA - defines clamping threshold for overvoltage events on protected lines |
| Dynamic Impedance (ZZ) | ≤100 Ω at 2 mA - ensures low-voltage overshoot during fast ESD pulses |
| Capacitance (Ct) | 21 pF at 1 MHz, 0 V - preserves signal integrity on USB 2.0 and audio interfaces |
| ESD Withstand | ±20 kV contact, ±30 kV air per IEC61000-4-2 - certified for end-equipment compliance testing |
| Surge Reverse Power (PRSM) | 85 W (10 μs pulse) - handles single high-energy transients without failure |
| Package | SC-76 (2-pin Super Mini Mold), 1.7 × 2.5 × 0.9 mm - enables dense layout on compact PCBs |
Pinout & Package
Package: SC-76 (2-pin Super Mini Mold), dimensions 1.7 ± 0.1 mm × 2.5 ± 0.15 mm × 0.9 ± 0.1 mm, cathode indicated by marking band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Signal Line Terminal | Connected to protected I/O line (e.g., USB D+, HDMI TMDS+) |
| Cathode | Clamp-to-Ground Terminal | Connected to system ground plane to shunt ESD current away from IC inputs |
Key Features
| Feature | Design Value |
|---|---|
| IEC61000-4-2 Level 4 Compliance | Validated ±20 kV contact discharge performance - eliminates need for external test rework |
| Low Capacitance (21 pF) | Minimizes insertion loss and signal distortion on 480 Mbps USB 2.0 and analog audio paths |
| Pb-Free & RoHS Compliant | Tin-plated terminations meet EU RoHS Directive 2011/65/EU - supports global manufacturing compliance |
| High Surge Power Handling | 85 W peak pulse capability (10 μs) - withstands multiple ESD strikes without degradation |
Applications
| USB 2.0 Port Protection | HDMI Interface Clamping |
|---|---|
|
Use Scenario: Protecting upstream/downstream USB 2.0 data lines (D+, D−) against ESD events during cable insertion or handling. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed between connector and USB transceiver IC. Use Value: Prevents latch-up or gate oxide damage in USB PHYs by limiting transient voltage to ≤45 V during ±20 kV contact discharge. |
Use Scenario: Shielding HDMI TMDS channels from ESD induced by hot-plug events or user touch on connectors. IC Role / Device Role / Timing Role: Low-capacitance shunt diode connected from each TMDS+ line to ground. Use Value: Maintains signal rise/fall times <150 ps while clamping transients below HDMI receiver absolute max rating (±1.5 V beyond supply). |
| Audio Jack ESD Suppression | Industrial Serial Interface Guarding |
|
Use Scenario: Safeguarding 3.5 mm stereo headphone/mic jacks in portable media players and laptops. IC Role / Device Role / Timing Role: Bidirectional clamping pair (anode-to-ground, cathode-to-line) on left/right channel and mic lines. Use Value: Enables pass/fail certification per IEC61000-4-2 without redesign - 21 pF avoids audible pop/click artifacts. |
Use Scenario: Hardening RS-232/RS-485 transceivers in factory automation panels exposed to maintenance personnel ESD. IC Role / Device Role / Timing Role: Line-to-ground clamp on driver outputs and receiver inputs. Use Value: Extends mean time between failures (MTBF) by >5× in environments with frequent operator interaction and ungrounded tools. |
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 (ON Semiconductor) | Lower VBR (3.3 V), higher Ct (45 pF), same SC-76 package | Better suited for 3.3 V logic rails; not recommended for 30 V signal lines | Select only when protecting sub-5 V interfaces where tighter clamping is required |
| TPD2E001DRYR (Texas Instruments) | 2-channel array, 15 pF per line, 12 V VBR, X2SON package | Requires board space for dual-line protection; incompatible pinout | Choose when simultaneous D+/D− protection is needed and layout allows X2SON footprint |
Compared with NNCD39DA-T1-AT, ES9X3.3SFT5G offers lower clamping voltage but insufficient standoff for 30 V lines, while TPD2E001DRYR provides dual-line integration at the cost of package incompatibility and reduced surge rating (30 W vs. 85 W).
Availability
NNCD39DA-T1-AT is available at Aetrix Electronics and suitable for USB 2.0 port protection, HDMI interface clamping, and audio jack ESD suppression requiring stable component supply across production lifecycles.
Supply support for NNCD39DA-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.
NNCD39DA-T1-AT belongs to Renesas' legacy ESD protection diode family targeting consumer and industrial interface hardening, engineered specifically for IEC61000-4-2 compliance in compact surface-mount form factors.
FAQ
What is the maximum operating voltage for NNCD39DA-T1-AT before clamping activates?
The NNCD39DA-T1-AT begins clamping above its specified breakdown voltage range of 37.0–41.0 V at 2 mA. It remains non-conductive below this threshold, allowing normal signal operation up to 30 V DC reverse bias (per IR ≤2 μA spec). This makes NNCD39DA-T1-AT appropriate for protecting 24 V industrial I/O or 30 V auxiliary power lines where overvoltage margins must exceed 30 V.
Is NNCD39DA-T1-AT compatible with automated SMT assembly processes?
Yes, NNCD39DA-T1-AT uses Pb-free pure tin plating and is supplied in tape-and-reel format (3000 pcs/reel), fully compatible with standard reflow profiles including J-STD-020-compliant lead-free soldering. Its SC-76 package has thermal mass and pad geometry validated for 260°C peak reflow without delamination or solder bridging.
Does NNCD39DA-T1-AT support bidirectional ESD protection?
No, NNCD39DA-T1-AT is a unidirectional diode configured for anode-to-signal, cathode-to-ground connection. For bidirectional protection (e.g., AC-coupled lines), two NNCD39DA-T1-AT units must be used in series opposition - one anode-up, one cathode-up - as confirmed in Renesas' sample application circuit on page 6 of D18879EJ2V0DS00.
What is the thermal resistance of NNCD39DA-T1-AT under standard mounting conditions?
Per Figure 4 in the datasheet, NNCD39DA-T1-AT exhibits a transient thermal impedance of 625°C/W at 1 ms pulse width when mounted on a 30 mm × 30 mm × 1.6 mm glass epoxy PCB. This value drops to ~120°C/W at 100 ms, enabling safe dissipation of repetitive ESD pulses without exceeding 150°C junction temperature.
Can NNCD39DA-T1-AT replace higher-voltage variants like NNCD43DA in the same footprint?
No - although NNCD39DA-T1-AT shares the SC-76 package with other NNCDx.xDA variants, its 37–41 V VBR is not interchangeable with NNCD43DA's 40–44.9 V rating. Substituting without validation risks premature clamping or inadequate protection margin; Renesas specifies each type for distinct voltage rail applications and does not guarantee functional equivalence across part numbers.
NNCD39DA-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):
- 30V (Max)
- Voltage - Breakdown (Min):
- 37V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 85W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 21pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-Super Mini Mold
NNCD39DA-T1-AT FAQ
1.How can I place an order for NNCD39DA-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD39DA-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 NNCD39DA-T1-AT reliable?
The price and inventory of NNCD39DA-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 NNCD39DA-T1-AT is usually 5 days.
3.What payment methods are accepted for NNCD39DA-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD39DA-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD39DA-T1-AT?
NNCD39DA-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD39DA-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 NNCD39DA-T1-AT?
For technical support, including NNCD39DA-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD39DA-T1-AT requirements.
6.How does Aetrix verify that NNCD39DA-T1-AT is sourced from the original manufacturer or authorized distributors?
All NNCD39DA-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 NNCD39DA-T1-AT meets industry standards.
7.What is the process for return or replacement of NNCD39DA-T1-AT?
All NNCD39DA-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NNCD39DA-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 NNCD39DA-T1-AT part is unused and in its original packaging.
Return procedure for NNCD39DA-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD39DA-T1-AT Tags
-
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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