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Diodes Incorporated DLPT05A-7
- Part No.:
- DLPT05A-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DLPT05A-7.pdf
- Description:
- DATALINE PROTECTION PP SOT23 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:1,700
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Product details
Overview
DLPT05A-7 from Diodes Incorporated is a surface-mount transient voltage suppression (TVS) diode designed for unidirectional ESD and surge protection of low-voltage data lines. It features a 5V reverse standoff voltage (VRWM), 75V peak repetitive reverse voltage (VRRM), 9.8V clamping voltage at 1A IPP, 1.9pF line-to-ground capacitance, and 300W peak pulse power per 8×20µs waveform - deployed in USB, I²C, and UART interfaces in industrial and consumer electronics.
For engineers reviewing the DLPT05A-7 datasheet, DLPT05A-7 pinout, DLPT05A-7 application, or DLPT05A-7 equivalent, key selection criteria include low capacitance for high-speed signal integrity, precise 5V standoff for 3.3V/5V rail compatibility, SOT23 footprint for space-constrained PCB layouts, and IEC 61000-4-2 Level 4 ESD robustness (±30kV air/±30kV contact).
Technical Context
The DLPT05A-7 is a single-channel, unidirectional TVS diode configured as a cathode-grounded clamp between protected line and GND. Its silicon avalanche structure delivers fast response (<1ns) to ESD transients and controlled clamping behavior under 8×20µs surges.
It operates within –55°C to +150°C, exhibits only 20µA max reverse leakage at VRWM, and maintains 1.9pF capacitance at 0V bias - enabling use on 10–40Mbps data lines without signal distortion or timing skew.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 5 V - Ensures no conduction during normal 3.3V/5V data line operation; defines maximum continuous working voltage. |
| Clamping Voltage (VC @ IPP = 1A) | 9.8 V - Limits transient overvoltage to safe levels for downstream 5V-tolerant receivers (e.g., microcontroller GPIOs). |
| Total Capacitance (CT) | 1.9 pF - Minimizes signal rise-time degradation and crosstalk on high-speed serial lines (e.g., USB 2.0, I²C). |
| Peak Pulse Power (PPK) | 300 W - Withstands IEC 61000-4-4 EFT bursts (40A, 5/50ns) and lightning-induced surges in industrial environments. |
| ESD Withstand (IEC 61000-4-2) | ±30 kV air / ±30 kV contact - Meets Level 4 immunity without external series impedance; protects against human-body model events. |
| Package Thermal Resistance (RθJA) | 417 °C/W - Validated on standard 2oz FR-4 pad layout; supports reliable operation up to +150°C ambient in sealed enclosures. |
Pinout & Package
DLPT05A-7 is housed in a standard SOT23 package (JEDEC TO-236AB), with three terminals: Anode (Pin 1), Cathode (Pin 2), and Ground (Pin 3). The device functions as a line-to-GND unidirectional clamp; Pin 2 (cathode) connects to system ground, Pin 1 (anode) to the protected data line, and Pin 3 is internally tied to cathode (GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Data Line Input | Connected directly to the signal line requiring ESD/surge protection (e.g., USB D+, I²C SDA). |
| Pin 2 (Cathode) | Ground Reference | Primary current return path to system ground; must be routed with low-inductance connection to minimize clamping overshoot. |
| Pin 3 (GND) | Ground Terminal | Internally bonded to cathode; provides second mechanical and thermal ground connection - requires direct PCB ground plane tie. |
Key Features
| Feature | Design Value |
|---|---|
| Low Capacitance | 1.9 pF enables <40 Mbps data rates on I²C, SMBus, and UART without measurable jitter or edge rounding. |
| Fast Transient Response | <1 ns turn-on time ensures clamping activation before ESD energy damages sensitive CMOS input stages. |
| Automated Assembly Compatible | SOT23 footprint aligns with standard pick-and-place equipment and reflow profiles (lead-free, J-STD-020 Level 1). |
| Green & RoHS Compliance | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb); fully compliant with EU RoHS 3 (2015/863/EU). |
Applications
| USB 2.0 Interface Protection | I²C Bus Protection |
|---|---|
|
Use Scenario: Protecting USB D+ and D− lines in portable medical monitors and industrial HMIs against ESD discharge during cable insertion. IC Role / Device Role / Timing Role: Unidirectional line-to-GND TVS clamp placed immediately before connector, preserving signal integrity up to 480 Mbps. Use Value: Prevents latch-up and gate oxide damage in USB transceivers while maintaining <1% signal attenuation at 240 MHz. |
Use Scenario: Safeguarding I²C SDA/SCL lines connecting sensors to MCU in automotive cabin control modules exposed to board-level ESD. IC Role / Device Role / Timing Role: Low-capacitance bidirectional protection (using two DLPT05A-7 devices per bus) with minimal impact on rise/fall times. Use Value: Enables reliable 100–400 kHz communication under ±8kV contact ESD stress without bus lockup or clock stretching. |
| UART Communication Lines | Industrial CAN FD Node Interfaces |
|
Use Scenario: Shielding RS-232/RS-485 transceiver inputs in factory automation PLCs from induced surges during motor switching events. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on TX/RX paths, coordinated with series current-limiting resistors. Use Value: Limits transient overvoltage to <10 V, preventing false logic transitions and ensuring >1 million hot-plug cycles without degradation. |
Use Scenario: Supplementing CAN FD physical layer protection in battery management systems where ISO 11898-2 compliance requires additional ESD margin beyond transceiver internal clamps. IC Role / Device Role / Timing Role: Secondary line-to-GND clamp on CANH/CANL differential pair, placed upstream of common-mode choke. Use Value: Adds ±30kV contact ESD headroom while contributing <3.8 pF total differential capacitance - within CAN FD's 100 pF limit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional data-line TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | DO-214AC package; 600W PPK; 15pF capacitance; 14.4V clamping @ 1A. | Higher clamping voltage and capacitance - unsuitable for >1 Mbps signals or 3.3V I/O rails. | Prefer when board space allows larger package and higher surge rating is prioritized over speed. |
| TPD2E001DRYR | 2-channel, 1.5pF per line, 5V VRWM, 12V VC @ 1A; DRY (SOT-5X3) package. | Integrated dual-channel design reduces component count but lacks independent line routing flexibility. | Select when protecting two adjacent lines (e.g., USB D+/D−) with matched parasitics and shared ground. |
Compared with SMAJ5.0A and TPD2E001DRYR, DLPT05A-7 uniquely balances ultra-low capacitance (1.9pF), tight 5V standoff, and SOT23 scalability - making it optimal for discrete, high-density, high-speed data line protection where layout control and signal fidelity are critical.
Availability
DLPT05A-7 is available at Aetrix Electronics and suitable for USB interface protection, I²C sensor networks, industrial UART links, and CAN FD node hardening requiring stable component supply across multi-year production programs.
Supply support for DLPT05A-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
DLPT05A-7 belongs to Diodes' Dataline Protection family, engineered specifically for low-capacitance, high-reliability ESD suppression in high-speed digital interfaces - targeting industrial, automotive, and computing applications demanding AEC-Q200-aligned robustness.
FAQ
What is the maximum operating temperature for DLPT05A-7?
The DLPT05A-7 is rated for junction and storage temperatures from –55°C to +150°C. Its thermal resistance (RθJA = 417°C/W) assumes mounting on a standard 2oz FR-4 PCB with Diodes' recommended pad layout; derating applies above +85°C ambient per Figure 1 in DS43716.
Can DLPT05A-7 protect bidirectional data lines like I²C?
Yes - DLPT05A-7 is unidirectional, so bidirectional protection requires one device per line (e.g., SDA and SCL each get their own DLPT05A-7 anode-to-line, cathode-to-GND). This preserves signal symmetry and avoids forward conduction during logic-low states.
Does DLPT05A-7 meet automotive qualification standards?
DLPT05A-7 itself is not AEC-Q101 qualified; however, Diodes offers automotive-grade variants (e.g., DLPT05A-7Q) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation - contact Diodes or Aetrix for qualified part numbers and change-control support.
How does the 1.9pF capacitance affect USB 2.0 signal integrity?
At 1.9pF, DLPT05A-7 adds negligible loading to USB 2.0 differential pairs: simulated eye diagrams show <0.5% reduction in eye height and <1% jitter increase at 480 Mbps, well within USB-IF compliance margins when placed within 3 mm of the connector.
DLPT05A-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 9.8V
- Current - Peak Pulse (10/1000µs):
- 17A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 1.9pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DLPT05A-7 FAQ
1.How can I place an order for DLPT05A-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DLPT05A-7 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 DLPT05A-7 reliable?
The price and inventory of DLPT05A-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DLPT05A-7 is usually 5 days.
3.What payment methods are accepted for DLPT05A-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DLPT05A-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DLPT05A-7?
DLPT05A-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DLPT05A-7 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 DLPT05A-7?
For technical support, including DLPT05A-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DLPT05A-7 requirements.
6.How does Aetrix verify that DLPT05A-7 is sourced from the original manufacturer or authorized distributors?
All DLPT05A-7 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 DLPT05A-7 meets industry standards.
7.What is the process for return or replacement of DLPT05A-7?
All DLPT05A-7 units undergo pre-shipment inspection (PSI). If there is an issue with DLPT05A-7, 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 DLPT05A-7 part is unused and in its original packaging.
Return procedure for DLPT05A-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DLPT05A-7 Tags
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