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Diodes Incorporated DLP3V3DTZ-7
- Part No.:
- DLP3V3DTZ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DLP3V3DTZ-7.pdf
- Description:
- TVS DIODE 3.3V 9.3V 9.666V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,105
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Product details
Overview
DLP3V3DTZ-7 from Diodes Incorporated is a dual unidirectional / single bidirectional transient voltage suppressor (TVS) diode designed for ESD and surge protection of 3.3 V data lines and power rails. It delivers 372 W peak pulse power (8/20 µs), 4.5 V breakdown voltage, 6.0 V clamping voltage at 1 A, 420 pF junction capacitance (unidirectional, 0 V), and operates from –55 °C to +150 °C in SOT-23 package. It is deployed in USB 2.0 interfaces, HDMI signal paths, and 3.3 V I/O ports of portable electronics.
For engineers reviewing the DLP3V3DTZ-7 datasheet, DLP3V3DTZ-7 pinout, DLP3V3DTZ-7 application, or DLP3V3DTZ-7 equivalent, key selection criteria include its dual configuration flexibility (two unidirectional or one bidirectional channel), low clamping voltage under high IPP, sub-100 nA leakage at 3.3 V, AEC-Q101 qualification, and compatibility with automated SMT assembly on high-density PCBs.
Technical Context
This TVS integrates two independent Zener-based protection elements in a single SOT-23 package: Pins 1–3 and 2–3 form two unidirectional channels (anode-to-ground), while Pins 1–2 (with Pin 3 open) configure as a single bidirectional channel. Its low dynamic resistance (0.115 Ω) enables precise clamping voltage prediction using VCL = VBR + Rd × IPP.
The device meets IEC 61000-4-2 Level 4 (±25 kV air / ±8 kV contact) and AEC-Q101 stress requirements, with thermal resistance of 420 °C/W on standard FR-4 layout. Junction capacitance is split between configurations: 420 pF (unidirectional, 0 V) and 210 pF (bidirectional, 0 V), enabling optimized trade-offs between ESD robustness and signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Rated Reverse Standoff Voltage | 3.3 V - Maximum continuous operating voltage before conduction; matches 3.3 V logic and interface rails. |
| Breakdown Voltage (VBR) | 4.5 V @ 1 mA - Threshold where TVS begins avalanche conduction; ensures reliable turn-on above normal signal swing. |
| Clamping Voltage (VC) | 6.0 V @ 1 A (unidirectional) - Peak voltage seen by protected circuit during low-current ESD events; preserves downstream IC integrity. |
| Peak Pulse Power (8/20 µs) | 372 W - Sustains high-energy transients without failure; supports lightning-survivable designs per IEC 61000-4-5. |
| Junction Capacitance | 420 pF @ 0 V (unidirectional) - Impacts high-speed signal rise time; suitable for ≤100 Mbps data lines like UART or SPI. |
| ESD Rating | ±25 kV air / ±8 kV contact (IEC 61000-4-2) - Exceeds industrial and automotive ESD immunity requirements. |
| Operating Temperature | –55 °C to +150 °C - Enables use in under-hood automotive modules and industrial edge controllers. |
Pinout & Package
Package: SOT-23 - Surface-mount plastic case (UL 94V-0), 0.008 g mass, moisture sensitivity level 1, compatible with reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of first unidirectional TVS (D1) | Connects to Line1_in; conducts transient current to ground when voltage exceeds 4.5 V. |
| Pin 2 | Anode of second unidirectional TVS (D2) | Connects to Line2_in; provides independent protection path for parallel data line. |
| Pin 3 | Cathode (common ground node) | Shared cathode tied to system ground; forms return path for both unidirectional channels or center tap for bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual configuration support | Single footprint serves either two 3.3 V unidirectional data lines (e.g., D+/D−) or one bidirectional 3.3 V bus (e.g., I²C clock/data), reducing BOM count. |
| Low clamping voltage at high current | 9.3 V @ 40 A (unidirectional) - Limits stress on 3.3 V I/O pins during 8/20 µs surges, preventing latch-up or oxide rupture. |
| Low leakage current | ≤95 µA @ 3.3 V - Minimizes standby power loss in battery-powered devices such as wearables and IoT sensors. |
| AEC-Q101 qualified | Qualified per Human Body Model (8 kV), Machine Model (400 V), and ESD (IEC 61000-4-2) - Validated for automotive infotainment and body control modules. |
| Green RoHS-compliant construction | Lead-free, halogen-free molding compound (post-2006 date codes); meets EU RoHS Directive 2011/65/EU and JEDEC JS709. |
Applications
| USB 2.0 Data Line Protection | HDMI Hot-Plug Detection Line |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 peripherals against ESD during cable insertion/removal. IC Role / Device Role: Unidirectional TVS pair (Pins 1–3 and 2–3) clamps transients to <6.0 V while preserving signal integrity up to 480 Mbps. Use Value: Prevents port controller damage without adding series impedance or degrading eye diagram margin. |
Use Scenario: Shielding HDMI HPD (Hot-Plug Detect) line from user-induced ESD in consumer AV equipment. IC Role / Device Role: Single unidirectional channel (Pin 1–3) protects open-drain 5 V-tolerant HPD signal referenced to chassis ground. Use Value: Maintains HPD logic threshold margin (≥2.0 V) during ±8 kV contact discharge, avoiding false plug/unplug detection. |
| 3.3 V Power Bus Clamping | Industrial RS-485 Transceiver I/O |
Use Scenario: Bidirectional surge suppression on 3.3 V supply rail feeding isolated CAN or Ethernet PHYs. IC Role / Device Role: Configured as bidirectional TVS (Pins 1–2, Pin 3 NC) to clamp both positive and negative excursions on VCC. Use Value: Limits rail collapse to ≤9.6 V during 15 A lightning surges, preventing brownout reset of connected microcontrollers. |
Use Scenario: Protecting RS-485 driver/receiver A/B differential lines in factory automation gateways. IC Role / Device Role: Two unidirectional channels (Pins 1–3 and 2–3) shunt ESD to ground on each line independently. Use Value: Ensures >15 kV ESD immunity without compromising common-mode rejection ratio (CMRR) due to matched capacitance (±5%). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Single unidirectional, SMA package (larger footprint, higher RθJA = 50 °C/W), 600 W PPP, 12.3 V VC @ 22.5 A | Requires two devices for dual-line protection; unsuitable for space-constrained layouts | Select when higher peak power handling is needed and board area permits discrete placement. |
| TPD2E001DRYR | Single bidirectional, SOT-553, 300 W PPP, 10.5 V VC @ 5 A, 12 pF Cj @ 0 V | Lower capacitance but no unidirectional option; limited to low-voltage, high-speed interfaces only | Prefer for USB Type-C CC lines or MIPI D-PHY where <15 pF is mandatory and dual-channel not required. |
Compared with SMAJ3.3A and TPD2E001DRYR, DLP3V3DTZ-7 uniquely combines dual-channel flexibility, 3.3 V standoff matching, and SOT-23 compactness-making it optimal for cost-sensitive, space-constrained 3.3 V interface protection where configurability and thermal performance matter.
Availability
DLP3V3DTZ-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI hot-plug detection circuits, and 3.3 V industrial I/O modules requiring stable component supply and long-term lifecycle continuity.
Supply support for DLP3V3DTZ-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 and manufacturing operations across Asia and the Americas.
DLP3V3DTZ-7 belongs to Diodes' TVS Diode portfolio targeting board-level ESD and surge protection; engineered specifically for high-reliability, low-voltage digital interfaces in automotive, computing, and industrial applications.
FAQ
Is DLP3V3DTZ-7 recommended for new designs?
No-Diodes Incorporated explicitly marks DLP3V3DTZ-7 as "NOT RECOMMENDED FOR NEW DESIGNS" in its official datasheet (DS30669 Rev. 3). This indicates the part is in legacy status, with newer alternatives like DLP3V3DQ-7 or APX3V3-03T available. Customers initiating new designs should consult Diodes' latest TVS roadmap and validate replacement parts for form-fit-function compliance before committing.
What is the correct pin configuration for bidirectional operation?
For bidirectional protection, connect the signal line between Pin 1 and Pin 2, leaving Pin 3 unconnected (NC). The internal structure forms a back-to-back Zener pair between Pins 1 and 2, enabling symmetrical clamping for ± transients. Do not tie Pin 3 to ground in this mode, as it would short one diode and disable protection.
How does junction capacitance vary with reverse bias voltage?
Junction capacitance drops with increasing reverse bias: unidirectional mode measures 420 pF at 0 V and 230 pF at 3.3 V; bidirectional mode is 210 pF at 0 V and 115 pF at 3.3 V. This voltage-dependent behavior must be accounted for in high-frequency signal path modeling, especially near the 3.3 V operating point where capacitance is lowest and signal loading minimized.
Can DLP3V3DTZ-7 replace SMAJ3.3A in existing layouts?
No-it cannot serve as a direct drop-in replacement due to different package (SOT-23 vs. SMA), pin count (3-pin vs. 2-pin), and configuration logic. SMAJ3.3A is single-channel unidirectional; DLP3V3DTZ-7 requires external routing to exploit dual-channel capability. Layout redesign and signal path validation are mandatory for any substitution attempt.
DLP3V3DTZ-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 4.5V
- Voltage - Clamping (Max) @ Ipp:
- 9.3V, 9.666V
- Current - Peak Pulse (10/1000µs):
- 40A, 15A (8/20µs)
- Power - Peak Pulse:
- 372W, 145W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DLP3V3DTZ-7 FAQ
1.How can I place an order for DLP3V3DTZ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DLP3V3DTZ-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 DLP3V3DTZ-7 reliable?
The price and inventory of DLP3V3DTZ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DLP3V3DTZ-7 is usually 5 days.
3.What payment methods are accepted for DLP3V3DTZ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DLP3V3DTZ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DLP3V3DTZ-7?
DLP3V3DTZ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DLP3V3DTZ-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 DLP3V3DTZ-7?
For technical support, including DLP3V3DTZ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DLP3V3DTZ-7 requirements.
6.How does Aetrix verify that DLP3V3DTZ-7 is sourced from the original manufacturer or authorized distributors?
All DLP3V3DTZ-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 DLP3V3DTZ-7 meets industry standards.
7.What is the process for return or replacement of DLP3V3DTZ-7?
All DLP3V3DTZ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DLP3V3DTZ-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 DLP3V3DTZ-7 part is unused and in its original packaging.
Return procedure for DLP3V3DTZ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DLP3V3DTZ-7 Tags
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