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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Diodes Incorporated DESDALC5ALP-7B

Name: DESDALC5ALP-7B
Brand: Diodes Incorporated
SKU: DESDALC5ALP-7B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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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:: RFQ Add To RFQ list

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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
V_BR (min)	5.8V (pin2→pin1) / 11V (pin1→pin2): Ensures reliable turn-on before damage to 3.3V/5V interface ICs
I_PP (max)	9A (8/20µs): Sustains full IEC 61000-4-2 Level 4 surges without degradation
C_T	26–30pF @ 0V, 1MHz: Minimizes signal integrity impact on USB 2.0 and MIPI D-PHY lines
V_CL	12V (pin2→pin1) / 21V (pin1→pin2) @ 8kV contact: Defines worst-case voltage seen by protected IC during ESD event
R_DYN	0.19Ω (both directions): Limits voltage overshoot during fast TLP pulses (1–20A, 100ns)
I_R (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 V_BR, 100pF C_T	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 V_BR, 45pF C_T, 12A I_PP	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.

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