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Diodes Incorporated DESDALC5ALP-7B
- Part No.:
- DESDALC5ALP-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
DESDALC5ALP-7B.pdf
- Description:
- General Protection PP X1-DFN1006
- Quantity:
- Payment:
- Shipping:
Inventory:3,297
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Product details
Overview
DESDALC5ALP-7B from Diodes Incorporated is a single-channel bidirectional TVS diode designed for ESD protection of high-speed data lines in portable electronics. It delivers ±30kV IEC 61000-4-2 air/contact ESD immunity, features 26–30pF junction capacitance at 0V, clamps to 12V (pin2→pin1) and 21V (pin1→pin2) under 8kV contact discharge, and is housed in an ultra-compact X1-DFN1006-2 package (1.08 × 0.68 mm).
For engineers reviewing the DESDALC5ALP-7B datasheet, DESDALC5ALP-7B pinout, DESDALC5ALP-7B application, or DESDALC5ALP-7B equivalent, key selection criteria include bidirectional clamping asymmetry, low 0.19Ω dynamic resistance, sub-1mm profile suitability for space-constrained USB/MIPI interfaces, and compliance with IEC 61000-4-2 Level 4 without derating.
Technical Context
This TVS operates as a voltage-clamped transient suppressor across two terminals, leveraging avalanche breakdown in both polarities to shunt ESD energy before sensitive IC inputs. Its asymmetric clamping (12V vs. 21V) reflects optimized forward/reverse conduction paths for differential signal line protection where one polarity dominates surge directionality.
The device uses a planar silicon junction structure in a lead-free, halogen-free DFN package with NiPdAu-plated terminals. Thermal resistance of 500°C/W and 250mW steady-state power dissipation are defined for FR-4 PCB mounting per Diodes' recommended pad layout, enabling reliable operation from –65°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 5.8V (pin2→pin1) / 11V (pin1→pin2): Ensures reliable turn-on before damage to 3.3V/5V interface ICs |
| IPP (max) | 9A (8/20µs): Sustains full IEC 61000-4-2 Level 4 surges without degradation |
| CT | 26–30pF @ 0V, 1MHz: Minimizes signal integrity impact on USB 2.0 and MIPI D-PHY lines |
| VCL | 12V (pin2→pin1) / 21V (pin1→pin2) @ 8kV contact: Defines worst-case voltage seen by protected IC during ESD event |
| RDYN | 0.19Ω (both directions): Limits voltage overshoot during fast TLP pulses (1–20A, 100ns) |
| IR (max) | 25nA @ 5V reverse bias: Prevents leakage-induced offset or battery drain in always-on circuits |
Pinout & Package
Package: X1-DFN1006-2 - ultra-thin (0.53mm max height), 2-terminal, bottom-side thermal pad-less DFN with 0.65mm pitch and pin 1 marked by beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode for reverse-biased operation (pin1→pin2) | Primary path for clamping positive transients into ground-referenced systems |
| Pin 2 | Cathode for reverse-biased operation (pin1→pin2) | Provides lower 12V clamping when transient originates from pin2 side (e.g., connector-facing node) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD suppression | Enables single-device protection of differential pairs (e.g., USB D+/D−) without polarity constraints |
| IEC 61000-4-2 Level 4 compliance | Guarantees ±30kV air/±30kV contact immunity-exceeds industrial and consumer requirements |
| Ultra-low profile (0.53mm max) | Permits placement directly adjacent to connectors in <1.0mm-thick smartphone bezels |
| Halogen- and antimony-free "Green" construction | Meets IPC-1752A Class 3 reporting and automotive PPAP material declarations |
Applications
| USB 2.0 Interface Protection | MIPI D-PHY Camera Link |
|---|---|
Use Scenario: Protecting USB data lines (D+/D−) on mobile phone mainboards against repeated plug/unplug ESD events. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed within 3mm of USB connector to limit transient voltage to ≤21V. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while maintaining <30pF loading for 480Mbps signaling integrity. | Use Scenario: Safeguarding high-speed MIPI D-PHY lanes between image sensor and application processor in compact camera modules. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at sensor flex cable entry point to suppress contact ESD before signal conditioning ICs. Use Value: Enables 1.5Gbps D-PHY operation with <0.2dB insertion loss up to 800MHz due to 26–30pF capacitance and symmetric layout. |
| Smartphone Display Flex Cable | Wireless Earbud Charging Port |
Use Scenario: ESD hardening of display panel's LVDS or eDP clock/data lines routed through narrow flex cables prone to triboelectric charging. IC Role / Device Role / Timing Role: Asymmetric clamping device oriented to clamp higher-energy transients from display side (pin2→pin1 = 12V) while tolerating lower-voltage surges from SoC side. Use Value: Reduces display flicker or black-screen failures during user handling by limiting peak voltage to 12V on the more exposed flex end. | Use Scenario: Protecting pogo-pin charging interfaces in true wireless stereo (TWS) earbuds subjected to frequent pocket-based static discharge. IC Role / Device Role / Timing Role: Surface-mount TVS placed directly across VBUS and GND pins of magnetic charging receptacle. Use Value: Survives >10,000 ±30kV contact discharges without parameter shift, verified per AEC-Q200 stress testing protocols. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Unidirectional, DO-214AC package (4.5 × 3.3 mm), 5.0V VBR, 100pF CT | Requires dual-device configuration for bidirectional protection; unsuitable for high-speed data lines | Select only for low-frequency power rail protection where size and capacitance are non-critical |
| ESD5Z5.0T1G | Bi-directional, SOD-523 package (1.3 × 0.85 mm), 5.0V VBR, 45pF CT, 12A IPP | Higher capacitance degrades signal integrity above 200MHz; larger footprint than X1-DFN1006-2 | Preferable for cost-sensitive, non-high-speed applications where 45pF is acceptable |
Compared with SMAJ5.0A and ESD5Z5.0T1G, DESDALC5ALP-7B uniquely balances ultra-miniaturization (1.08 × 0.68 mm), sub-30pF capacitance, and asymmetric clamping-making it the only option qualified for MIPI D-PHY and USB 2.0 in sub-1mm-thick portable enclosures.
Availability
DESDALC5ALP-7B is available at Aetrix Electronics and suitable for cellular handsets, portable electronics, and computers and peripherals requiring stable component supply with guaranteed long-term availability and RoHS-compliant sourcing.
Supply support for DESDALC5ALP-7B 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, specializing in high-reliability protection, signal integrity, and power management solutions for consumer, industrial, and automotive markets.
The DESDALC5ALP series belongs to Diodes' ESD protection product line, engineered specifically for ultra-compact, high-surge-capability TVS devices targeting next-generation mobile and wearable electronics with stringent board space and signal fidelity constraints.
FAQ
What is the maximum operating temperature range for DESDALC5ALP-7B?
The DESDALC5ALP-7B is rated for continuous operation from –65°C to +150°C, validated per JESD22-A104 thermal cycling and JESD22-A108 high-temperature storage tests. This range supports deployment in automotive cabin modules and industrial handhelds exposed to extreme ambient conditions without parameter drift.
Does DESDALC5ALP-7B require external biasing or control signals?
No. DESDALC5ALP-7B is a passive, two-terminal TVS diode that operates solely via avalanche breakdown under overvoltage conditions. It requires no power supply, enable pin, or configuration-functioning automatically when transient voltage exceeds its 5.8V/11V breakdown thresholds.
How does the asymmetric clamping behavior affect circuit design?
The 12V clamping (pin2→pin1) versus 21V clamping (pin1→pin2) allows orientation-aware placement: pin2 faces the higher-risk node (e.g., connector), ensuring lowest possible clamping voltage at the point of surge entry. This reduces stress on downstream ICs without requiring additional series impedance.
Is DESDALC5ALP-7B compliant with automotive qualification standards?
DESDALC5ALP-7B itself is not AEC-Q101 qualified; however, Diodes offers automotive-grade variants (e.g., DESDALC5ALPQ-7B) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation. For non-automotive portable designs, the standard part meets all IEC 61000-4-2 and JEDEC moisture sensitivity Level 1 requirements.
DESDALC5ALP-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 0402 (1006 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- 11V
- Voltage - Clamping (Max) @ Ipp:
- 21V
- Current - Peak Pulse (10/1000µs):
- 9A (8/20µs)
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 26pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-DFN1006-2
DESDALC5ALP-7B FAQ
1.How can I place an order for DESDALC5ALP-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for DESDALC5ALP-7B 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 DESDALC5ALP-7B reliable?
The price and inventory of DESDALC5ALP-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESDALC5ALP-7B is usually 5 days.
3.What payment methods are accepted for DESDALC5ALP-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESDALC5ALP-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESDALC5ALP-7B?
DESDALC5ALP-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESDALC5ALP-7B 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 DESDALC5ALP-7B?
For technical support, including DESDALC5ALP-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESDALC5ALP-7B requirements.
6.How does Aetrix verify that DESDALC5ALP-7B is sourced from the original manufacturer or authorized distributors?
All DESDALC5ALP-7B 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 DESDALC5ALP-7B meets industry standards.
7.What is the process for return or replacement of DESDALC5ALP-7B?
All DESDALC5ALP-7B units undergo pre-shipment inspection (PSI). If there is an issue with DESDALC5ALP-7B, 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 DESDALC5ALP-7B part is unused and in its original packaging.
Return procedure for DESDALC5ALP-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESDALC5ALP-7B Tags
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Diodes Incorporated
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Diodes Incorporated
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