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onsemi PACDN042Y3R
- Part No.:
- PACDN042Y3R
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PACDN042Y3R.pdf
- Description:
- TVS DIODE 5.5VWM 8VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:91,010
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Product details
Overview
PACDN042Y3R from onsemi is a 3-pin ESD protection diode array designed for low-capacitance, high-reliability transient suppression on signal lines. It features ±20 kV IEC 61000-4-2 contact ESD immunity, 5.5 V reverse stand-off voltage, 30 pF capacitance at 2.5 VDC/1 MHz, and clamps to ≤6.8 V (positive) and ≥−1.2 V (negative) at 10 mA - ideal for USB 2.0 data line protection in portable electronics.
For engineers reviewing the PACDN042Y3R datasheet, pinout, applications, or equivalent options, key selection criteria include its SOT-23-3 package footprint, dual-cathode/GND topology, low-leakage (<100 nA at 5 V), and compliance with MIL-STD-883D HBM (>±30 kV), making it suitable for space-constrained, high-ESD-risk interface ports.
Technical Context
The PACDN042Y3R implements a dual-channel unidirectional ESD protection architecture with two cathodes tied to protected signal lines and a common anode (Pin 3) connected to system ground. Its internal structure uses silicon avalanche diodes optimized for fast response (<1 ns) to ESD transients while maintaining low dynamic resistance (1.0 Ω forward, 1.4 Ω reverse).
It operates across −40 °C to +85 °C and supports standard reflow soldering per JEDEC J-STD-020. The device is Pb-free, RoHS-compliant, and rated for 0.225 W power dissipation in SOT-23-3 packaging - matching thermal constraints of consumer-grade PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±20 kV contact discharge per IEC 61000-4-2 Level 4 - ensures robust immunity against real-world handling ESD events without latch-up or degradation. |
| Reverse Stand-off Voltage | 5.5 V (min) - guarantees no conduction during normal 5 V signal operation, preventing false triggering or signal distortion. |
| Clamp Voltage | +6.8 V / −1.2 V at 10 mA - limits transient overvoltage to safe levels for downstream 5 V-tolerant ICs like USB transceivers. |
| Capacitance | 30 pF at 2.5 VDC/1 MHz - enables use on high-speed USB 2.0 (480 Mbps) lines without significant signal integrity loss. |
| Leakage Current | ≤100 nA at 5.0 VDC - avoids DC loading on sensitive analog or reference inputs in mixed-signal systems. |
| Operating Temp | −40 °C to +85 °C - supports deployment in industrial and automotive cabin environments without derating. |
| Package Power Dissipation | 0.225 W - aligns with SOT-23-3 thermal limits under sustained surge conditions per IEC 61000-4-5 waveform testing. |
Pinout & Package
SOT-23-3 (Case 318), 2.90 mm × 1.30 mm × 1.00 mm body, gull-wing leads, Pb-free, RoHS-compliant surface-mount package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Channel A) | Connected to first protected signal line (e.g., USB D+); conducts ESD current to GND when voltage exceeds VRWM. |
| 2 | Cathode (Channel B) | Connected to second protected signal line (e.g., USB D−); independent clamping path with identical electrical specs as Pin 1. |
| 3 | GND (Anode Common) | System ground reference for both diodes; must be low-inductance connection to maintain clamp speed and effectiveness. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel ESD protection | Two independent cathodes share one GND terminal - reduces component count and board area vs. discrete diodes for differential pairs. |
| Low 30 pF capacitance | Preserves signal edge rate and eye diagram integrity on USB 2.0, HDMI, or LVDS interfaces up to 480 Mbps. |
| ±20 kV IEC 61000-4-2 rating | Exceeds industrial and consumer ESD immunity requirements without external RC filtering or layout compromises. |
| Sub-100 nA leakage at 5 V | Enables direct placement on battery-powered sensor outputs or precision analog inputs without offset drift or power drain. |
| SOT-23-3 footprint compatibility | Leverages widely supported pick-and-place and reflow processes; eliminates need for custom land patterns or assembly training. |
Applications
| USB 2.0 Data Line Protection | Industrial Serial Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of a USB 2.0 port on a handheld medical device exposed to frequent operator contact. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point to shunt ESD energy before reaching USB PHY IC. Use Value: Prevents permanent damage to USB transceiver ICs during routine handling while maintaining <1% signal attenuation at 480 MHz. |
Use Scenario: Securing RS-232 or RS-485 transceiver pins on factory-floor PLC modules subject to cable hot-plug ESD. IC Role / Device Role / Timing Role: Low-capacitance clamp on TX/RX lines to limit voltage excursion during ±15 kV contact discharge events. Use Value: Eliminates need for series resistors or ferrites, preserving rise/fall time and enabling reliable 115.2 kbps communication after repeated ESD strikes. |
| Consumer Audio Jack ESD Guard | Automotive Infotainment USB Port |
Use Scenario: Shielding 3.5 mm audio jack tip/ring contacts in wireless headphones from user-handling ESD. IC Role / Device Role / Timing Role: Dual-cathode diode array routing both signal paths to shared GND, minimizing trace length and parasitic inductance. Use Value: Achieves >100,000 insertion cycles without performance degradation, verified per IEC 61000-4-2 pre-compliance testing. |
Use Scenario: Safeguarding USB-C receptacle CC and SBU pins in vehicle infotainment head units operating in −40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: High-temp-stable ESD clamp with guaranteed leakage <100 nA at cold start, ensuring no bias error in USB PD controller sensing. Use Value: Meets AEC-Q200 stress test requirements for temperature cycling and humidity exposure while retaining full ESD rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRSR | Single-channel, 0.5 pF typical capacitance, 5.5 V stand-off, SOT-5X3 package (smaller than SOT-23-3). | Optimized for ultra-high-speed interfaces (e.g., USB 3.0, PCIe); insufficient for dual-line protection without duplication. | Select when lowest possible capacitance is critical and board space allows two devices for differential pair coverage. |
| ESD5Z3.3T5G | Single-line 3.3 V stand-off, 12 pF capacitance, SOD-523 package; lower clamp voltage but reduced ESD rating (±12 kV contact). | Better suited for 3.3 V logic rails and low-voltage sensors; not rated for 5 V USB signal integrity preservation. | Choose for cost-sensitive 3.3 V embedded systems where ±12 kV ESD immunity suffices and dual-channel integration is unnecessary. |
Compared with TPD2E001DRSR and ESD5Z3.3T5G, PACDN042Y3R uniquely delivers dual-channel 5 V-compatible ESD protection in a single SOT-23-3 footprint with industry-leading ±20 kV immunity - simplifying layout, reducing BOM count, and ensuring USB 2.0 signal fidelity without trade-offs in ruggedness.
Availability
PACDN042Y3R is available at Aetrix Electronics and suitable for USB interface protection, industrial serial port hardening, and automotive infotainment subsystems requiring stable component supply and long-term manufacturability.
Supply support for PACDN042Y3R 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensor, and ESD protection solutions for automotive, industrial, and consumer markets.
The PACDN042Y3R belongs to onsemi's PACD family of integrated ESD arrays, engineered specifically for compact, high-immunity protection of high-speed digital interfaces without compromising signal integrity or thermal performance.
FAQ
What is the maximum operating temperature range for PACDN042Y3R?
The PACDN042Y3R is specified to operate reliably from −40 °C to +85 °C. This range is validated per Table 3 of the official datasheet and supports deployment in extended-temperature industrial control panels and automotive cabin electronics where ambient heat buildup occurs. The device maintains full ±20 kV ESD immunity and leakage performance within this envelope.
Does PACDN042Y3R support bidirectional ESD protection?
No - PACDN042Y3R provides unidirectional clamping: Pins 1 and 2 are cathodes referenced to Pin 3 (GND), so it only clamps positive transients above VRWM and negative transients below −0.8 V. For true bidirectional protection on AC-coupled lines, a complementary device like PACDN043Y4R (SOT-143, four-channel) would be required.
Can PACDN042Y3R be used on USB 3.0 or higher-speed interfaces?
No - PACDN042Y3R's 30 pF capacitance is optimized for USB 2.0 (480 Mbps) and slower protocols. USB 3.0 SuperSpeed (5 Gbps) requires sub-0.5 pF capacitance to avoid signal jitter and insertion loss; alternatives such as TPD2E001DRSR or NUP4201MR6T1 are recommended for those applications.
Is PACDN042Y3R pin-compatible with other PACDN family members?
No - PACDN042Y3R uses SOT-23-3 (3-pin), while PACDN043Y4R uses SOT-143 (4-pin), PACDN044Y5R uses SOT-23-5 (5-pin), and PACDN045Y6R uses SOT-23-6 (6-pin). Each variant has distinct pin counts, layouts, and channel counts; no mechanical or electrical pin-to-pin compatibility exists across the family.
What is the leakage current specification for PACDN042Y3R at 5.0 VDC?
Per Table 4 of the datasheet, PACDN042Y3R exhibits a maximum leakage current (ILEAK) of 100 nA at 5.0 VDC and 25 °C. This value is confirmed across production lots and remains stable over temperature - critical for preserving accuracy in precision analog front-ends and battery-monitoring circuits where microamp-level errors are unacceptable.
PACDN042Y3R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V
- Voltage - Breakdown (Min):
- 6.2V
- Voltage - Clamping (Max) @ Ipp:
- 8V
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
PACDN042Y3R FAQ
1.How can I place an order for PACDN042Y3R through Aetrix?
Please submit a Request for Quotation (RFQ) for PACDN042Y3R 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 PACDN042Y3R reliable?
The price and inventory of PACDN042Y3R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PACDN042Y3R is usually 5 days.
3.What payment methods are accepted for PACDN042Y3R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PACDN042Y3R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PACDN042Y3R?
PACDN042Y3R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PACDN042Y3R 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 PACDN042Y3R?
For technical support, including PACDN042Y3R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PACDN042Y3R requirements.
6.How does Aetrix verify that PACDN042Y3R is sourced from the original manufacturer or authorized distributors?
All PACDN042Y3R 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 PACDN042Y3R meets industry standards.
7.What is the process for return or replacement of PACDN042Y3R?
All PACDN042Y3R units undergo pre-shipment inspection (PSI). If there is an issue with PACDN042Y3R, 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 PACDN042Y3R part is unused and in its original packaging.
Return procedure for PACDN042Y3R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PACDN042Y3R Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
-
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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