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onsemi PACDN044Y5R
- Part No.:
- PACDN044Y5R
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-74A, SOT-753
- Datasheet:
-
PACDN044Y5R.pdf
- Description:
- TVS DIODE 5.5VWM 8VC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:9,839
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Product details
Overview
PACDN044Y5R from onsemi is a 5-pin SOT-23 ESD protection diode array designed for high-reliability transient suppression on signal lines. It delivers ±20 kV IEC 61000-4-2 contact ESD protection, 5.5 V reverse stand-off voltage, 30 pF capacitance at 1 MHz, and clamps to 6.8 V (positive) / −0.8 V (negative) at 10 mA. It is used in USB and serial interface port protection.
For engineers reviewing the PACDN044Y5R datasheet, pinout, applications, or equivalent options, key selection criteria include channel count (4-channel), low clamping voltage under surge, ultra-low leakage (<100 nA), compact SOT-23-5 footprint, and compliance with IEC 61000-4-2 Level 4 and MIL-STD-883 HBM ±30 kV.
Technical Context
The PACDN044Y5R integrates four unidirectional ESD protection diodes in a single SOT-23-5 package, with all cathodes routed to pins 1, 2, 4, and 5, and a common anode (GND) on pin 3. Its architecture enables simultaneous protection of four independent signal lines referenced to a shared ground plane.
It operates across −40 °C to +85 °C, supports ≤30 pF signal-line loading to preserve high-speed integrity, and maintains <100 nA leakage at 5.0 VDC - critical for battery-powered and low-power interface designs. The device meets IEC 61000-4-2 Level 4 (±8 kV contact) and exceeds it with ±20 kV contact discharge rating per pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±20 kV contact discharge (IEC 61000-4-2); protects against real-world handling ESD events without degradation. |
| Reverse Stand-off Voltage | 5.5 V (min); ensures no conduction during normal 5 V logic operation, preventing false triggering. |
| Clamp Voltage | 6.8 V (positive), −0.8 V (negative) at 10 mA; limits transient voltage to safe levels for downstream 5 V-tolerant ICs. |
| Capacitance | 30 pF at 2.5 VDC, 1 MHz; low enough for USB 2.0 and UART signals without signal integrity loss. |
| Leakage Current | ≤100 nA at 5.0 VDC; avoids DC loading on high-impedance sensor or analog interface lines. |
| Operating Temp | −40 °C to +85 °C; suitable for industrial and automotive cabin-temperature applications. |
Pinout & Package
SOT-23-5 package (Case 527AH), 2.90 mm × 1.30 mm × 1.00 mm body, 1.90 mm lead pitch, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | ESD protection node for first signal line; connects to protected I/O (e.g., USB D+). |
| 2 | Cathode | ESD protection node for second signal line; connects to protected I/O (e.g., USB D−). |
| 3 | GND | Common anode reference; must be low-inductance connection to system ground plane. |
| 4 | Cathode | ESD protection node for third signal line; supports multi-line interface protection. |
| 5 | Cathode | ESD protection node for fourth signal line; enables full 4-channel protection in one 5-pin device. |
Key Features
| Feature | Design Value |
|---|---|
| 4-channel ESD protection | Single SOT-23-5 package protects four independent signal lines - reduces BOM count and layout area vs. discrete diodes. |
| Low clamping voltage | 6.8 V positive clamp ensures downstream 5 V logic ICs remain within absolute maximum ratings during ESD transients. |
| Ultra-low capacitance | 30 pF enables use on USB 2.0, UART, I²C, and other up-to-12 Mbps digital interfaces without edge distortion. |
| High ESD robustness | ±20 kV contact discharge rating exceeds IEC 61000-4-2 Level 4 - validated for production-grade reliability in field-deployed equipment. |
| Pb-free & RoHS compliant | Meets global environmental compliance requirements for commercial and industrial electronics manufacturing. |
Applications
| USB 2.0 Port Protection | Industrial Serial Interface |
|---|---|
Use Scenario: Protecting USB D+/D− lines on host or peripheral devices exposed to frequent plugging/unplugging in factory environments. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector entry point, shunting ESD energy to ground before reaching USB transceiver. Use Value: Prevents latch-up or permanent damage to USB PHY ICs while maintaining signal integrity up to 480 Mbps due to 30 pF capacitance. |
Use Scenario: Securing RS-232/RS-485 transceiver I/O pins in programmable logic controllers (PLCs) mounted near ESD-prone machinery. IC Role / Device Role / Timing Role: Front-end ESD guard for bidirectional data lines, operating within −40 °C to +85 °C ambient range without derating. Use Value: Eliminates need for external TVS arrays; ±20 kV contact rating withstands repeated maintenance-handling events in industrial settings. |
| Consumer Docking Station | Medical Diagnostic Interface |
Use Scenario: Shielding proprietary high-speed data lanes (e.g., DisplayPort AUX, sideband signals) in laptop docking stations subject to user ESD. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp on auxiliary signal paths where timing margins are tight and impedance matching is critical. Use Value: 30 pF loading avoids skew or jitter accumulation across multiple daisy-chained ports, preserving link training stability. |
Use Scenario: Protecting isolated SPI or UART lines between microcontroller and sensor modules in portable diagnostic tools. IC Role / Device Role / Timing Role: Signal-line protector with <100 nA leakage, ensuring minimal impact on low-current sensor bias networks and ADC reference paths. Use Value: Enables direct integration into battery-operated devices without compromising standby current or measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DRYR (TI) | 4-channel, SOT-23-5, 5.5 V VRWM, 30 pF, ±12 kV IEC 61000-4-2 contact | Lower ESD rating (±12 kV vs. ±20 kV); suitable for consumer-grade but not industrial handling environments | Select when cost sensitivity outweighs extreme ESD robustness; verify system-level testing meets required pass/fail thresholds. |
| ESD5Z7.0T1G (onsemi) | Single-channel SOT-523, 7.0 V VRWM, 20 pF, ±15 kV IEC 61000-4-2 contact | Requires four separate placements; higher board area and assembly cost than integrated 4-channel PACDN044Y5R | Choose only if design requires differential or asymmetric clamping, or when existing layout cannot accommodate 5-pin footprint. |
Compared with TPD4E001DRYR and ESD5Z7.0T1G, the PACDN044Y5R provides superior ESD immunity (±20 kV), identical capacitance, and integrated 4-channel topology - delivering higher reliability and lower total system cost in space-constrained industrial and medical interfaces.
Availability
PACDN044Y5R is available at Aetrix Electronics and suitable for USB port protection, industrial serial interface hardening, and medical diagnostic equipment requiring stable component supply and long-term manufacturability.
Supply support for PACDN044Y5R 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, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The PACDN044Y5R belongs to onsemi's PACDN family of ESD protection arrays, engineered specifically for high-density, low-capacitance, multi-line transient suppression in portable and ruggedized electronic systems.
FAQ
What is the pin configuration of the PACDN044Y5R?
The PACDN044Y5R uses a 5-pin SOT-23-5 package (Case 527AH) with pins 1, 2, 4, and 5 as individual cathodes for four ESD protection channels, and pin 3 as the common GND (anode) terminal. This configuration is confirmed in the official onsemi datasheet Figure 2 and Table 1.
Does the PACDN044Y5R meet IEC 61000-4-2 Level 4 ESD requirements?
Yes - the PACDN044Y5R exceeds IEC 61000-4-2 Level 4, with a rated ±20 kV contact discharge capability per pin, as specified in Table 4 of the onsemi datasheet. This is double the ±8 kV minimum required for Level 4 compliance.
What is the maximum operating temperature for the PACDN044Y5R?
The PACDN044Y5R has a standard operating temperature range of −40 °C to +85 °C, as defined in Table 3 of the onsemi datasheet. It is qualified for industrial-grade thermal environments without derating.
Can the PACDN044Y5R be used for USB 2.0 data line protection?
Yes - the PACDN044Y5R's 30 pF capacitance at 1 MHz and low clamping voltage (6.8 V positive / −0.8 V negative) make it suitable for USB 2.0 D+/D− line protection. Its performance preserves signal rise/fall times and eye diagram integrity up to 480 Mbps.
Is the PACDN044Y5R still in active production?
Yes - although the datasheet revision notes certain variants (e.g., PACDN044TR) as discontinued, the PACDN044Y5R is explicitly listed in the "ORDERING INFORMATION" table (page 5) as an active part with "3000 / Tape & Reel" packaging and no discontinuation flag.
PACDN044Y5R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 4
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
PACDN044Y5R FAQ
1.How can I place an order for PACDN044Y5R through Aetrix?
Please submit a Request for Quotation (RFQ) for PACDN044Y5R 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 PACDN044Y5R reliable?
The price and inventory of PACDN044Y5R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PACDN044Y5R is usually 5 days.
3.What payment methods are accepted for PACDN044Y5R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PACDN044Y5R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PACDN044Y5R?
PACDN044Y5R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PACDN044Y5R 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 PACDN044Y5R?
For technical support, including PACDN044Y5R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PACDN044Y5R requirements.
6.How does Aetrix verify that PACDN044Y5R is sourced from the original manufacturer or authorized distributors?
All PACDN044Y5R 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 PACDN044Y5R meets industry standards.
7.What is the process for return or replacement of PACDN044Y5R?
All PACDN044Y5R units undergo pre-shipment inspection (PSI). If there is an issue with PACDN044Y5R, 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 PACDN044Y5R part is unused and in its original packaging.
Return procedure for PACDN044Y5R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PACDN044Y5R 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
-
DESD5V0U1BB-7
Diodes Incorporated
-
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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