My Inquiry
My Account
Diodes Incorporated ALS6W10A
- Part No.:
- ALS6W10A
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
ALS6W10A.pdf
- Description:
- Transient Voltage Suppressor PP
- Quantity:
- Payment:
- Shipping:
Inventory:7,397
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ALS6W10A from Diodes Incorporated is a unidirectional surface-mount load dump transient voltage suppressor diode in DO-218 package, rated for 10 V standoff voltage, 11.1–12.3 V breakdown, 4600 W peak pulse power (10/1000 µs), and 600 A forward surge current. It serves as a clamping diode for automotive ECU modules to protect sensitive electronics against ISO 7637-2 and ISO 16750-2 load dump transients.
For engineers reviewing the ALS6W10A datasheet, ALS6W10A pinout, ALS6W10A application, or ALS6W10A equivalent, key selection criteria include its 17.0 V clamping voltage at 271 A, ≤15 µA reverse leakage at 10 V, AEC-Q101 qualification, MSL Level 1 rating, and heatsink-anode polarity configuration in high-power automotive transient suppression.
Technical Context
This device operates as a unidirectional TVS diode optimized for automotive load dump protection, where it clamps induced voltage spikes by entering avalanche conduction above its 11.1 V minimum breakdown threshold. Its DO-218 package provides low thermal resistance and supports 260 °C soldering, enabling reliable operation up to +175 °C junction temperature.
The ALS6W10A delivers 4600 W peak pulse power under 10/1000 µs waveform and sustains 3600 W under longer 10/10,000 µs exponential load dump pulses. Its 1.9 V maximum forward voltage at 100 A ensures low conduction loss during high-current surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 10 V - Maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 11.1–12.3 V at 5 mA - Confirmed avalanche initiation range for reliable transient response |
| Clamping Voltage (VC) | 17.0 V at 271 A (10/1000 µs) - Actual voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power (PPPM) | 4600 W (10/1000 µs) - Sustained energy absorption capability for ISO 7637-2 Pulse 5a |
| Forward Surge Current (IFSM) | 600 A (8.3 ms half-sine) - Robustness against repetitive inductive turn-off surges |
| Operating Temperature | −55 °C to +175 °C - Validated junction range for under-hood automotive deployment |
| Reverse Leakage (ID) | ≤15 µA at 10 V, 25 °C - Minimal standby power loss and signal integrity impact |
Pinout & Package
DO-218 plastic package with heatsink-anode polarity: anode terminal is electrically connected to the metal heatsink tab; cathode identified by molded band. Designed for surface-mount reflow with matte tin-plated terminals compliant to MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Current entry point during clamping | Electrically tied to case; must be connected to system ground or chassis for effective heat dissipation and low-inductance path |
| Cathode (Banded End) | Current exit point during clamping | Connected to protected line (e.g., battery rail); clamping occurs when cathode-to-anode voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive under-hood applications including temperature cycling, humidity, and mechanical shock |
| ISO 7637-2 & ISO 16750-2 compliance | Tested to withstand Load Dump Pulse 5a (10 ms exponential) without degradation or failure |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - no baking required prior to SMT assembly |
| Low thermal resistance package | DO-218 enables efficient heat transfer from junction to heatsink, supporting sustained 3600 W at elevated case temperatures |
| Halogen- and antimony-free "Green" construction | Meets RoHS 3 (2015/863/EU) with <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - compliant for global automotive supply chains |
Applications
| Engine Control Unit Protection | LED Headlamp Driver Protection |
|---|---|
Use Scenario: Protects microcontroller power rails and CAN transceivers in engine ECUs exposed to alternator load dump events during battery disconnect. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between battery rail and ground, conducting only during positive overvoltage transients. Use Value: Limits rail voltage to ≤17.0 V during 271 A surge, preventing latch-up or permanent damage to 5 V/3.3 V logic and interface ICs. | Use Scenario: Shields constant-current LED driver ICs and MOSFET switches in adaptive front lighting systems from 12 V rail transients. IC Role / Device Role / Timing Role: High-energy transient suppressor mounted directly at LED module input, shunting surge current away from driver IC inputs. Use Value: Absorbs 4600 W peak energy without derating at 125 °C case temperature, maintaining stable LED output during vehicle cranking. |
| Body Control Module (BCM) Power Input | Start-Stop System Battery Interface |
Use Scenario: Safeguards BCM power management ICs handling door locks, window motors, and interior lighting during repeated load dump events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 12 V input, sized to handle cumulative surge stress across multiple vehicle cycles. Use Value: Withstands ≥1000 load dump surges per ISO 16750-2 Annex D, ensuring 15-year field reliability without parameter drift. | Use Scenario: Protects bidirectional DC-DC converters and battery monitoring ICs in 12 V start-stop systems subjected to frequent alternator transients. IC Role / Device Role / Timing Role: Bidirectional clamping support via external series diode pairing; ALS6W10A handles positive transients on battery feed line. Use Value: Enables converter operation down to −40 °C while maintaining ≤15 µA leakage, minimizing parasitic drain during extended idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive load dump suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A (onsemi) | Lower PPPM (400 W), SMA package, 100 °C max TJ, non-AEC-Q101 | Not qualified for under-hood use; limited to cabin or low-temp industrial environments | Select only for cost-sensitive non-automotive designs with <500 W surge requirements |
| SMCJ10A (Littelfuse) | Same DO-214AB package, 1500 W PPPM, AEC-Q101 qualified, but 22.5 V VC at 100 A | Higher clamping voltage reduces protection margin for 5 V logic; requires larger layout area for thermal relief | Acceptable for less sensitive 12 V analog circuits where 22.5 V clamping is tolerable |
Compared with SMAJ10A and SMCJ10A, ALS6W10A offers 3× higher peak power handling, 175 °C junction rating, and 5.5 V lower clamping voltage - critical for protecting modern low-voltage automotive microcontrollers and communication interfaces.
Availability
ALS6W10A is available at Aetrix Electronics and suitable for engine control units, LED headlamp drivers, body control modules, and start-stop system battery interfaces requiring stable component supply across automotive production lifecycles.
Supply support for ALS6W10A 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.
The ALS6WxxA series belongs to Diodes' automotive-grade transient voltage suppressor product line, engineered specifically for robust load dump protection in harsh under-hood environments per ISO 7637-2 and AEC-Q101 requirements.
FAQ
What is the maximum clamping voltage of ALS6W10A under standard test conditions?
The ALS6W10A exhibits a maximum clamping voltage of 17.0 V when subjected to a 271 A peak pulse current with a 10/1000 µs waveform at 25 °C ambient. This value is measured across the cathode-to-anode terminals and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is ALS6W10A suitable for bidirectional transient suppression?
No - ALS6W10A is a unidirectional TVS diode designed exclusively for positive-polarity transients. For bidirectional protection, it must be paired with a second diode in series opposition or replaced with a dedicated bidirectional device such as the P6SMB10CA, which has symmetric ±10 V standoff and higher VC.
How does the DO-218 package improve thermal performance compared to SMA or SMB packages?
The DO-218 package features an integrated metal heatsink tab that provides direct thermal conduction from the silicon die to the PCB copper pour or external heatsink. This yields significantly lower junction-to-case thermal resistance than SMA/SMB, enabling sustained 3600 W dissipation at 125 °C case temperature - critical for under-hood automotive reliability.
Does ALS6W10A require derating at elevated ambient temperatures?
Yes - the device follows a defined power derating curve: full 4600 W rating applies only at ≤25 °C case temperature. Above that, power capability declines linearly to zero at 175 °C. Designers must calculate actual case temperature using thermal modeling and apply the corresponding derated PPPM value from Figure 1 in the datasheet.
ALS6W10A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-218AB
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 271A
- Power - Peak Pulse:
- 4600W (4.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218
ALS6W10A FAQ
1.How can I place an order for ALS6W10A through Aetrix?
Please submit a Request for Quotation (RFQ) for ALS6W10A 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 ALS6W10A reliable?
The price and inventory of ALS6W10A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ALS6W10A is usually 5 days.
3.What payment methods are accepted for ALS6W10A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ALS6W10A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ALS6W10A?
ALS6W10A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ALS6W10A 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 ALS6W10A?
For technical support, including ALS6W10A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ALS6W10A requirements.
6.How does Aetrix verify that ALS6W10A is sourced from the original manufacturer or authorized distributors?
All ALS6W10A 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 ALS6W10A meets industry standards.
7.What is the process for return or replacement of ALS6W10A?
All ALS6W10A units undergo pre-shipment inspection (PSI). If there is an issue with ALS6W10A, 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 ALS6W10A part is unused and in its original packaging.
Return procedure for ALS6W10A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ALS6W10A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
