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Renesas NSAD500H-T1-AT
- Part No.:
- NSAD500H-T1-AT
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NSAD500H-T1-AT.pdf
- Description:
- NSAD500 - ELECTROSTATIC DISCHARG
- Quantity:
- Payment:
- Shipping:
Inventory:27,000
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Product details
Overview
NSAD500H-T1-AT from Renesas Electronics is a quad-channel, common-anode electrostatic discharge (ESD) surge absorber in SC-88A package, designed for high-speed data line protection with 3.5 pF typical inter-pin capacitance, 8 kV contact ESD immunity per IEC 61000-4-2, and 5.3 V minimum breakover voltage - deployed in USB 2.0, IEEE 1394, and 100BASE-TX external interface circuits.
For engineers reviewing the NSAD500H-T1-AT datasheet, NSAD500H-T1-AT pinout, NSAD500H-T1-AT application, or NSAD500H-T1-AT equivalent, key selection criteria include low-capacitance transient suppression, quad-cathode common-anode topology, SC-88A footprint compatibility, and compliance with IEC 61000-4-2 Level 4 ESD requirements for high-speed signal integrity.
Technical Context
The NSAD500H-T1-AT implements a silicon avalanche diode structure optimized for fast response to ESD transients while minimizing parasitic capacitance. Its common-anode quad configuration enables compact protection of four independent signal lines sharing a single ground return path.
Each cathode-to-anode channel exhibits 5.3 V minimum breakover voltage at 1 mA, 3.5 pF typical capacitance at 0 V/1 MHz, and supports 2 W peak surge power (10 μs pulse), making it suitable for bidirectional signal line clamping without DC bias dependency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Immunity | ≥8 kV contact discharge per IEC 61000-4-2 - ensures robustness against human-body-model ESD events in end-user interfaces. |
| Inter-pin Capacitance | 3.5 pF typical at 0 V/1 MHz - preserves signal integrity on 480 Mbps USB 2.0 and 400 Mbps IEEE 1394 links. |
| Breakover Voltage | 5.3 V min (A–Kx), 8 V max - defines clamping threshold range for reliable overvoltage suppression without false triggering. |
| Surge Power Rating | 2 W peak (t = 10 μs, 1 pulse) - handles transient energy from ESD pulses without degradation. |
| Package | SC-88A (5-pin, 2.1 × 1.25 mm) - enables automated SMT placement and high-density PCB layout for multi-line interfaces. |
| Operating Temp | −55°C to +150°C storage - supports industrial and automotive under-hood ambient conditions. |
Pinout & Package
NSAD500H-T1-AT is housed in a 5-pin SC-88A surface-mount package with gull-wing leads, measuring 2.1 mm × 1.25 mm × 0.9 mm (max height). The package supports reflow soldering per J-STD-020 and is RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode 1 | ESD clamp output for first protected signal line; connects to data line (e.g., USB D+). |
| 2 (A) | Anode (common) | Shared anode node tied to system ground; provides single-point return for all four channels. |
| 3 (K2) | Cathode 2 | ESD clamp output for second protected signal line (e.g., USB D−). |
| 4 (K3) | Cathode 3 | ESD clamp output for third signal line (e.g., IEEE 1394 TPB). |
| 5 (K4) | Cathode 4 | ESD clamp output for fourth signal line (e.g., IEEE 1394 TPA). |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel common-anode topology | Enables simultaneous protection of four differential or single-ended data lines with one ground connection, reducing PCB trace count and layout complexity. |
| 3.5 pF typical inter-pin capacitance | Minimizes signal distortion and insertion loss on high-speed interfaces up to 500 Mbps, meeting USB 2.0 eye diagram requirements. |
| IEC 61000-4-2 Level 4 compliance | Guarantees ≥8 kV contact / ≥15 kV air discharge immunity - satisfies end-equipment CE marking and FCC Part 15 Class B requirements. |
| SC-88A package footprint | Matches industry-standard 5-pin small-outline leaded package, enabling drop-in replacement in existing designs using similar ESD arrays. |
Applications
| USB 2.0 Interface Protection | IEEE 1394 (FireWire) Port |
|---|---|
Use Scenario: Protecting host/device USB 2.0 downstream ports against user-handling ESD during cable insertion or hot-plug events. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between connector pins and PHY IC, clamping surges before they reach the transceiver. Use Value: Maintains 480 Mbps data rate integrity by limiting inter-pin capacitance to 3.5 pF while delivering ≥8 kV ESD immunity per IEC 61000-4-2. | Use Scenario: Safeguarding FireWire 400/800 connectors on digital camcorders, audio interfaces, and external storage devices. IC Role / Device Role / Timing Role: Common-anode ESD array suppressing transients on TPB/TPA differential pairs and power/ground lines near the receptacle. Use Value: Prevents latch-up or damage to IEEE 1394 link-layer controllers without degrading jitter or rise/fall time due to low 3.5 pF loading. |
| 100BASE-TX Ethernet PHY | Industrial Control Data Links |
Use Scenario: Shielding RJ-45 magnetics secondary side and MDI pins in embedded network switches or IoT gateways. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp on TX+/TX− and RX+/RX− pairs, referenced to isolated PHY ground. Use Value: Ensures 100 Mbps Ethernet compliance by avoiding capacitance-induced signal attenuation or timing skew across all four protected lanes. | Use Scenario: Protecting RS-422/RS-485 differential data lines in factory automation PLCs and motor drives exposed to field ESD. IC Role / Device Role / Timing Role: Quad-channel surge absorber applied to A/B data pairs and control/status lines in harsh industrial environments. Use Value: Delivers 150°C junction temperature rating and −55°C to +150°C storage range for operation in uncontrolled ambient conditions without derating. |
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 NUP4201MR6T1G | Quad common-cathode configuration; 12 pF typical capacitance; 30 kV air discharge rating. | Better suited for lower-speed interfaces (<100 Mbps); higher capacitance limits USB 2.0 use. | Select when prioritizing ultra-high ESD voltage margin over signal speed preservation. |
| Vishay ESDE0402MUTAG | Single-channel 0402 device; 0.3 pF typical capacitance; 12 kV contact rating. | Requires four discrete placements; increases layout area and assembly cost vs. integrated quad solution. | Choose for ultra-high-speed (>1 Gbps) links where sub-0.5 pF loading is mandatory. |
Compared with NUP4201MR6T1G and ESDE0402MUTAG, the NSAD500H-T1-AT uniquely balances 3.5 pF low capacitance, quad integration in SC-88A, and IEC 61000-4-2 Level 4 compliance - making it optimal for space-constrained, high-speed differential interface protection where board area and signal fidelity are critical.
Availability
NSAD500H-T1-AT is available at Aetrix Electronics and suitable for USB 2.0 interface protection, IEEE 1394 port hardening, and 100BASE-TX Ethernet PHY safeguarding requiring stable component supply across production lifecycles.
Supply support for NSAD500H-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 leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, power, and interface solutions for industrial, automotive, and communications markets.
The NSAD500H-T1-AT belongs to Renesas' legacy ESD protection portfolio developed specifically for high-speed data line immunity - targeting USB, FireWire, and Fast Ethernet applications where low capacitance and standardized ESD compliance are non-negotiable.
FAQ
What is the maximum operating temperature for NSAD500H-T1-AT?
The NSAD500H-T1-AT has a maximum junction temperature of +150°C and a storage temperature range of −55°C to +150°C. This allows deployment in industrial environments with elevated ambient temperatures, such as inside enclosed control cabinets or near heat-generating components. Thermal design must ensure power dissipation stays within the 200 mW total rating under steady-state conditions. The NSAD500H-T1-AT's thermal performance is validated per its SC-88A package specifications in the original Renesas datasheet D16235EJ2V0DS.
Does NSAD500H-T1-AT support bidirectional signal lines like USB D+ and D−?
Yes, the NSAD500H-T1-AT supports bidirectional signal lines via its common-anode quad architecture: each cathode (K1–K4) clamps positive transients to the shared anode (pin 2), while the intrinsic diode structure also conducts negative transients from cathode to anode. This enables symmetrical protection of differential pairs such as USB 2.0 D+ and D− without polarity constraints. The NSAD500H-T1-AT's breakover voltage symmetry and low capacitance preserve signal integrity across both directions.
Is NSAD500H-T1-AT RoHS compliant and lead-free?
Yes, the NSAD500H-T1-AT is RoHS-compliant and lead-free, consistent with Renesas Electronics' environmental policy and the EU Directive 2011/65/EU. The SC-88A package uses matte tin plating over copper alloy leads, qualified for standard Pb-free reflow profiles (J-STD-020). Compliance documentation, including material declarations and test reports, is available through Renesas' official product page and authorized distributors. The NSAD500H-T1-AT meets all substance restrictions without exemptions.
Can NSAD500H-T1-AT be used for HDMI or PCIe Gen1 signal protection?
No - the NSAD500H-T1-AT is not recommended for HDMI or PCIe Gen1 interfaces. While its 3.5 pF capacitance is low, HDMI (1.65–3.4 Gbps) and PCIe Gen1 (2.5 Gbps) require sub-0.5 pF loading to avoid eye diagram closure and jitter accumulation. The NSAD500H-T1-AT's 3.5 pF value exceeds acceptable limits for those standards. It is explicitly validated for ≤500 Mbps applications (USB 2.0, IEEE 1394, 100BASE-TX). For HDMI or PCIe, consider dedicated ultra-low-capacitance arrays like the NSAD500H-T1-AT's successors or discrete 0.2–0.3 pF devices.
What is the meaning of "T1-AT" in NSAD500H-T1-AT?
The "T1-AT" suffix in NSAD500H-T1-AT denotes Renesas' tape-and-reel packaging variant: "T1" indicates 8 mm tape width with 3 mm pitch, and "AT" specifies auto-insertion compatibility (carrier tape conforming to EIA-481-D standards). This format enables high-speed pick-and-place assembly in SMT lines. The electrical and thermal specifications of NSAD500H-T1-AT are identical to the base NSAD500H device; only packaging differs. All performance data in the D16235EJ2V0DS datasheet applies directly to NSAD500H-T1-AT.
NSAD500H-T1-AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3V (Max)
- Voltage - Breakdown (Min):
- 5.3V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 2W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3.5pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A
NSAD500H-T1-AT FAQ
1.How can I place an order for NSAD500H-T1-AT through Aetrix?
Please submit a Request for Quotation (RFQ) for NSAD500H-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 NSAD500H-T1-AT reliable?
The price and inventory of NSAD500H-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 NSAD500H-T1-AT is usually 5 days.
3.What payment methods are accepted for NSAD500H-T1-AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSAD500H-T1-AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NSAD500H-T1-AT?
NSAD500H-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NSAD500H-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 NSAD500H-T1-AT?
For technical support, including NSAD500H-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSAD500H-T1-AT requirements.
6.How does Aetrix verify that NSAD500H-T1-AT is sourced from the original manufacturer or authorized distributors?
All NSAD500H-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 NSAD500H-T1-AT meets industry standards.
7.What is the process for return or replacement of NSAD500H-T1-AT?
All NSAD500H-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with NSAD500H-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 NSAD500H-T1-AT part is unused and in its original packaging.
Return procedure for NSAD500H-T1-AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NSAD500H-T1-AT Tags
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ESD9B5.0ST5G
onsemi
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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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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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Diodes Incorporated
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