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Vishay General Semiconductor - Diodes Division XLD8A24CAHM3/I
- Part No.:
- XLD8A24CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
XLD8A24CAHM3/I.pdf
- Description:
- PPPM=7000W AND IPPM=180A WITH 10
- Quantity:
- Payment:
- Shipping:
Inventory:899
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Product details
Overview
XLD8A24CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-218AC package, designed for automotive load dump protection with 24 V stand-off voltage, 26.7–29.5 V breakdown range, 26 V max clamping at 180 A (10/10 000 μs), and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the XLD8A24CAHM3/I datasheet, XLD8A24CAHM3/I pinout, XLD8A24CAHM3/I application, or XLD8A24CAHM3/I equivalent, key selection criteria include clamping voltage tightness (26 V), high-temperature operation up to 175 °C, bidirectional surge handling, low leakage (<1.0 μA at 24 V), and compatibility with 24 V jumper-start testing per automotive powertrain requirements.
Technical Context
The XLD8A24CAHM3/I employs Vishay's XClampR® technology to achieve ultra-low clamping voltage-26 V at 180 A-enabling robust protection of 24 V automotive electronics against load dump transients and lightning-induced surges. Its bidirectional structure eliminates polarity concerns in AC-coupled or floating bus systems.
Rated for TJ = −55 °C to +175 °C and qualified to AEC-Q101, the device sustains performance under high thermal stress and meets MSL Level 1 (245 °C peak reflow). It delivers 7000 W peak pulse power (10/10 000 μs) and 11 000 W (10/1000 μs), with no cathode marking due to symmetrical construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before conduction begins; sets system DC rail compatibility. |
| VBR (min/max) | 26.7 V / 29.5 V - Breakdown occurs within this range at 5 mA test current; defines turn-on threshold tolerance. |
| VCL max. | 26 V - Clamped voltage at 180 A (10/10 000 μs); ensures downstream ICs see ≤26 V during worst-case surge. |
| IPPM | 180 A - Peak pulse current capability with 10/10 000 μs waveform; supports high-energy automotive transients. |
| TJ max. | +175 °C - Maximum junction temperature; enables placement near hot engine compartments without derating loss. |
| Polarity | Bidirectional - Symmetric I-V curve allows use on AC lines or ungrounded buses without orientation constraints. |
| PPPM (10/1000 μs) | 11 000 W - Surge power rating for short-duration spikes; critical for ISO 7637-2 Pulse 5a compliance. |
Pinout & Package
Package: DO-218AC - Surface-mount, thermally enhanced plastic case with metal heatsink lead (Lead 2), UL 94 V-0 rated molding compound, matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode/Cathode (symmetrical) | Non-polarized terminal; interchangeable with Lead 2 in bidirectional operation. |
| Lead 2 / Metal Heatsink | Thermal & Electrical Return Path | Integrated metal slug provides low-thermal-resistance path to PCB copper; electrically common with Lead 1 in steady state. |
Key Features
| Feature | Design Value |
|---|---|
| XClampR® low clamping | 26 V clamping at 180 A enables tighter voltage margin than conventional TVS diodes, reducing overvoltage stress on protected ICs. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD, supporting ASIL-B system integration. |
| DO-218AC thermal design | Metal heatsink lead reduces thermal resistance by ~30% vs. DO-214AB, improving surge energy dissipation in compact layouts. |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 245 °C peak, eliminating moisture sensitivity handling requirements. |
| Halogen-free & RoHS | Meets automotive environmental standards (Vishay Doc. 99912) and supports green manufacturing compliance. |
Applications
| Automotive Load Dump Protection | 12 V Powertrain Jumper-Start Compliance |
|---|---|
Use Scenario: Protecting ECUs, body control modules, and infotainment systems from 12 V battery system load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary clamping device placed at power input stage to limit bus voltage excursion to ≤26 V during 120 V/100 ms surges. Use Value: Prevents latch-up or permanent damage to downstream 3.3 V/5 V logic ICs by maintaining safe clamping margin below their absolute maximum ratings. | Use Scenario: Withstanding 24 V jump-start voltage applied to 12 V vehicle electrical architecture during roadside recovery. IC Role / Device Role / Timing Role: Standoff-rated TVS that remains non-conductive at 24 V DC but clamps rapidly during transient overvoltage events. Use Value: Enables single-device solution for both nominal 12 V operation and 24 V emergency condition without external series components. |
| Inductive Switching Surge Suppression | Lightning-Induced Transient Protection |
Use Scenario: Suppressing voltage spikes generated by relay or solenoid coil de-energization in chassis electronics. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing stored magnetic energy (di/dt > 100 A/μs) before it propagates into sensitive analog front-ends. Use Value: Reduces need for snubber RC networks and simplifies PCB layout while maintaining <100 ns response time. | Use Scenario: Shielding CAN/LIN bus interfaces and sensor inputs from induced surges in vehicle exterior wiring harnesses exposed to lightning. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pairs or supply rails to divert common-mode energy. Use Value: Maintains signal integrity by limiting differential voltage swing to <26 V, preventing receiver saturation or ESD diode failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24AHE3/5BT | Unidirectional; 26.7–29.5 V VBR; 26 V VCL at 150 A; DO-214AC package; lower IPPM (150 A vs. 180 A). | Requires correct polarity placement; less surge headroom for extended load dump events. | Select when cost sensitivity outweighs bidirectionality and marginal surge margin. |
| SMCJ24AHM3_A/H | Bidirectional; same VWM/VBR/VCL specs; DO-214AB package; 170 A IPPM; higher thermal resistance than DO-218AC. | Lower power density; may require larger copper area for equivalent thermal management. | Choose if DO-218AC footprint is unavailable or legacy board reuse mandates DO-214AB compatibility. |
Compared with SMAJ24AHE3/5BT and SMCJ24AHM3_A/H, the XLD8A24CAHM3/I delivers superior thermal performance via its DO-218AC metal heatsink, higher surge current headroom (180 A), and native bidirectionality-making it optimal for new automotive designs where space, reliability, and simplified layout are prioritized.
Availability
XLD8A24CAHM3/I is available at Aetrix Electronics and suitable for automotive ECU protection, 12 V powertrain jumper-start compliance, and industrial control system surge hardening requiring stable component supply across multi-year production cycles.
Supply support for XLD8A24CAHM3/I 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The XClampR® TVS family-including XLD8A24CAHM3/I-is engineered specifically for next-generation automotive power systems demanding ultra-low clamping, AEC-Q101 validation, and thermal resilience in under-hood environments.
FAQ
What is the clamping voltage of the XLD8A24CAHM3/I at its rated peak pulse current?
The XLD8A24CAHM3/I has a maximum clamping voltage (VCL) of 26 V at 180 A peak pulse current with a 10/10 000 μs waveform. This value is guaranteed across temperature and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. The XLD8A24CAHM3/I achieves this performance using Vishay's XClampR® technology, which minimizes voltage overshoot compared to conventional TVS devices.
Is the XLD8A24CAHM3/I suitable for 12 V automotive systems subjected to 24 V jumper-start conditions?
Yes, the XLD8A24CAHM3/I is explicitly designed for this use case. Its 24 V stand-off voltage (VWM) ensures non-conduction during normal 12 V operation and 24 V jumper-start DC conditions, while its 26 V clamping voltage prevents overvoltage damage to downstream electronics. The XLD8A24CAHM3/I is referenced in Vishay documentation for withstanding 24 V jumper-start voltage tests in 12 V powertrain architectures.
Does the XLD8A24CAHM3/I require polarity-aware PCB layout?
No, the XLD8A24CAHM3/I is a bidirectional TVS diode with symmetrical I-V characteristics, so it has no cathode marking and can be mounted in either orientation. This eliminates polarity verification during assembly and simplifies layout for differential or floating bus protection. The XLD8A24CAHM3/I's bidirectional behavior is confirmed in its electrical characteristics table and mechanical drawings.
What is the maximum junction temperature rating for the XLD8A24CAHM3/I?
The XLD8A24CAHM3/I is rated for a maximum junction temperature (TJ) of +175 °C, validated per AEC-Q101 stress testing. This enables reliable operation in high-temperature under-hood locations such as engine control units and transmission control modules. The XLD8A24CAHM3/I maintains full surge capability up to this temperature, with derating curves provided in the datasheet for elevated ambient conditions.
How does the DO-218AC package of the XLD8A24CAHM3/I improve thermal performance over standard SMD packages?
The DO-218AC package of the XLD8A24CAHM3/I integrates a metal heatsink lead (Lead 2) that serves as both an electrical terminal and a low-thermal-resistance path to the PCB. Compared to DO-214AB or SMA packages, this design reduces junction-to-board thermal resistance by approximately 30%, allowing more efficient dissipation of 7000 W (10/10 000 μs) surge energy. The XLD8A24CAHM3/I's thermal advantage is documented in Vishay's package outline drawings and thermal characterization curves.
XLD8A24CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- XClampR™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 180A
- Power - Peak Pulse:
- 11000W (11kW)
- 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-218AB
XLD8A24CAHM3/I FAQ
1.How can I place an order for XLD8A24CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for XLD8A24CAHM3/I 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 XLD8A24CAHM3/I reliable?
The price and inventory of XLD8A24CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XLD8A24CAHM3/I is usually 5 days.
3.What payment methods are accepted for XLD8A24CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XLD8A24CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XLD8A24CAHM3/I?
XLD8A24CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XLD8A24CAHM3/I 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 XLD8A24CAHM3/I?
For technical support, including XLD8A24CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XLD8A24CAHM3/I requirements.
6.How does Aetrix verify that XLD8A24CAHM3/I is sourced from the original manufacturer or authorized distributors?
All XLD8A24CAHM3/I 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 XLD8A24CAHM3/I meets industry standards.
7.What is the process for return or replacement of XLD8A24CAHM3/I?
All XLD8A24CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with XLD8A24CAHM3/I, 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 XLD8A24CAHM3/I part is unused and in its original packaging.
Return procedure for XLD8A24CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
XLD8A24CAHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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