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Renesas NNCD5.6B
- Part No.:
- NNCD5.6B
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
NNCD5.6B.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:13,400
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Product details
Overview
NNCD5.6B from Renesas Electronics is a 500 mW electrostatic discharge (ESD) noise clipping diode in DO-35 package with DHD construction, featuring 5.29–5.88 V breakdown voltage, 13 Ω dynamic impedance at 20 mA, 2.5 V clamping voltage at 1 A, 140 pF capacitance at 0 V, and 30 kV ESD endurance per IEC 1000-4-2. It protects high-speed data lines in USB 2.0 interfaces.
For engineers reviewing the NNCD5.6B datasheet, NNCD5.6B pinout, NNCD5.6B application, or NNCD5.6B equivalent, key selection criteria include clamping voltage under 1 A surge, low dynamic impedance for fast transient suppression, junction temperature rating up to 175 °C, and DO-35 thermal performance on standard PCB layouts.
Technical Context
The NNCD5.6B operates as a bidirectional voltage-clamping device using avalanche breakdown to shunt ESD transients. Its DHD (Double Heatsink Diode) structure enables 500 mW continuous power dissipation and 100 W peak surge power handling at 10 µs pulse width.
It meets IEC 1000-4-2 Level 4 (±30 kV contact discharge) without degradation. Electrical behavior is defined by precise breakdown voltage tolerance (±5.5%), low clamping voltage (2.5 V @ 1 A), and stable capacitance (140 pF @ 0 V) suitable for signal integrity preservation in <100 MHz digital paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 5.29–5.88 V at 20 mA - defines minimum trigger threshold for ESD clamping activation |
| Clamping Voltage | 2.5 V at 1 A - limits voltage seen by protected IC during 30 kV ESD event |
| Dynamic Impedance | 13 Ω at 20 mA - determines voltage overshoot during fast transient current flow |
| Capacitance | 140 pF at 0 V, 1 MHz - impacts signal rise time and insertion loss in high-speed lines |
| ESD Withstand | ≥30 kV per IEC 1000-4-2 - validated for industrial-grade ESD immunity compliance |
| Power Dissipation | 500 mW continuous - supports reliable operation on 10 mm × 10 mm PCB copper area |
| Junction Temp | 175 °C max - enables use in thermally constrained enclosures without derating |
Pinout & Package
DO-35 glass axial package with cathode band marking; two-terminal device with no internal polarity distinction for bidirectional clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode | Bidirectional clamping node | Either terminal serves as input/output; symmetric avalanche conduction enables ±30 kV protection |
| Cathode Band | Polarity indicator | Visible band identifies cathode end; required for correct orientation in unidirectional layout variants |
Key Features
| Feature | Design Value |
|---|---|
| DHD construction | Enables 500 mW continuous dissipation via dual heatsink path through axial leads and glass body |
| IEC 1000-4-2 certified | Guarantees ≥30 kV contact discharge endurance without parameter shift or failure |
| Low clamping voltage | 2.5 V at 1 A ensures downstream logic remains within safe VIH/VIL margins during ESD strike |
| Tight VBR tolerance | ±5.5% (5.29–5.88 V) allows predictable trigger point across production lots |
| Stable capacitance | 140 pF at 0 V minimizes signal distortion on USB 2.0 and RS-485 differential pairs |
Applications
| USB 2.0 Data Lines | RS-485 Transceivers |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB 2.0 host/device controllers against factory handling and user ESD events. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: Limits clamped voltage to 2.5 V during 30 kV strike, preserving signal integrity and preventing PHY latch-up. |
Use Scenario: Shielding RS-485 transceiver A/B terminals in industrial PLC backplanes exposed to cable coupling surges. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp maintaining differential mode noise rejection above 10 MHz. Use Value: 140 pF capacitance avoids degrading edge rate of 10 Mbps signals while suppressing ±30 kV transients. |
| Audio Line Inputs | Keypad Interface Circuits |
Use Scenario: Guarding analog audio inputs on consumer AV receivers against user-touch ESD on RCA jacks. IC Role / Device Role / Timing Role: High-impedance voltage limiter placed before op-amp input stage. Use Value: 5.29–5.88 V breakdown avoids false triggering during normal 5 V rail operation while clamping >30 kV strikes. |
Use Scenario: ESD protection for membrane keypad scan lines routed across plastic front panels in medical devices. IC Role / Device Role / Timing Role: Low-leakage (<5 µA) clamp ensuring no DC loading on 3.3 V microcontroller GPIOs. Use Value: 5 µA max reverse leakage at 2.5 V prevents unintended key detection during standby mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSQA5.0AVS | 5.0 V nominal breakdown, 100 pF capacitance, SOD-323 package | Lower capacitance better for >100 MHz lines; smaller footprint but lower 350 mW power rating | Select when board space is constrained and signal bandwidth exceeds 50 MHz |
| Vishay SMAJ5.0A | 5.0 V breakdown, 600 W peak power, DO-214AC package | Higher surge rating suits lightning-induced surges; 220 pF capacitance limits use to <10 MHz | Select for combined ESD + lightning surge protection where speed is secondary to energy handling |
Compared with NNCD5.6B, NSQA5.0AVS offers tighter layout integration and higher frequency compatibility, while SMAJ5.0A provides superior surge energy absorption at the cost of bandwidth-NNCD5.6B balances 30 kV ESD robustness, 140 pF signal fidelity, and DO-35 manufacturability for mid-speed industrial interfaces.
Availability
NNCD5.6B is available at Aetrix Electronics and suitable for USB 2.0 interface protection, RS-485 industrial communication, and audio input circuit ESD hardening requiring stable component supply and long-term obsolescence management.
Supply support for NNCD5.6B 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 leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT applications.
The NNCD5.6B belongs to Renesas' legacy ESD protection diode family designed specifically for cost-sensitive, high-volume industrial and consumer equipment requiring certified IEC 1000-4-2 immunity without complex layout constraints.
FAQ
What is the maximum clamping voltage of NNCD5.6B under a 1 A ESD pulse?
The NNCD5.6B exhibits a clamping voltage of 2.5 V at 1 A, measured per IEC 1000-4-2 test conditions. This value ensures protected ICs remain within safe operating voltage windows during worst-case ESD events. The NNCD5.6B achieves this via low dynamic impedance (13 Ω) and optimized avalanche characteristics. Designers should verify system-level margin using this 2.5 V figure-not breakdown voltage-in transient analysis.
Does NNCD5.6B meet IEC 61000-4-2 Level 4 ESD immunity?
Yes, the NNCD5.6B is rated for ≥30 kV contact discharge per IEC 1000-4-2 (identical to IEC 61000-4-2), satisfying Level 4 requirements. This rating is verified across production lots and applies to both anode- and cathode-triggered events due to its bidirectional structure. The NNCD5.6B maintains parametric stability after repeated 30 kV strikes, making it suitable for end-equipment certification testing.
What is the thermal resistance of NNCD5.6B on a standard PCB layout?
When mounted on a 10 mm × 10 mm PCB with 35 µm copper thickness, the NNCD5.6B achieves approximately 300 °C/W junction-to-ambient thermal resistance, enabling full 500 mW power dissipation at ≤75 °C ambient. This value derives from its DO-35 DHD construction and is documented in Figure 2 of the original Renesas datasheet. Layout optimization beyond this area yields diminishing returns for the NNCD5.6B.
Can NNCD5.6B be used in place of NNCD5.1B for higher voltage margin?
Yes-NNCD5.6B provides a higher breakdown range (5.29–5.88 V vs. 4.85–5.35 V for NNCD5.1B), offering improved noise immunity in 5 V systems with rail tolerances exceeding ±5%. However, its 2.5 V clamping voltage is identical, so overvoltage protection capability remains unchanged. System designers selecting NNCD5.6B over NNCD5.1B must confirm that the higher VBR does not delay clamping onset during marginal transients.
Is NNCD5.6B RoHS compliant and lead-free?
Yes, NNCD5.6B complies with EU RoHS Directive 2011/65/EU and is lead-free. Renesas confirmed RoHS compliance for the entire NNCD3.3B–NNCD12B series in environmental documentation referenced as MEI-1202 and C10535E. The DO-35 glass package contains no restricted substances above threshold limits, and Aetrix Electronics supplies only RoHS-compliant date-code-lot batches of NNCD5.6B.
NNCD5.6B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
NNCD5.6B FAQ
1.How can I place an order for NNCD5.6B through Aetrix?
Please submit a Request for Quotation (RFQ) for NNCD5.6B 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 NNCD5.6B reliable?
The price and inventory of NNCD5.6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NNCD5.6B is usually 5 days.
3.What payment methods are accepted for NNCD5.6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NNCD5.6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NNCD5.6B?
NNCD5.6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NNCD5.6B 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 NNCD5.6B?
For technical support, including NNCD5.6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NNCD5.6B requirements.
6.How does Aetrix verify that NNCD5.6B is sourced from the original manufacturer or authorized distributors?
All NNCD5.6B 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 NNCD5.6B meets industry standards.
7.What is the process for return or replacement of NNCD5.6B?
All NNCD5.6B units undergo pre-shipment inspection (PSI). If there is an issue with NNCD5.6B, 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 NNCD5.6B part is unused and in its original packaging.
Return procedure for NNCD5.6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NNCD5.6B 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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