My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6S24AHE3_A/I
- Part No.:
- SM6S24AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S24AHE3_A/I.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:700
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6S24AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in DO-218AB package, designed for automotive load dump protection with 24 V stand-off voltage (VWM), 28.1 V nominal breakdown (VBR), 38.9 V clamping voltage (VC) at 118 A peak pulse current, and 4600 W peak pulse power (10/1000 μs). It operates from −55 °C to +175 °C and is AEC-Q101 qualified.
For engineers reviewing the SM6S24AHE3_A/I datasheet, SM6S24AHE3_A/I pinout, SM6S24AHE3_A/I application, or SM6S24AHE3_A/I equivalent, key selection criteria include its 175 °C junction rating, ISO7637-2 compliance for load dump transients, low leakage (<10 μA at VWM), and DO-218AB thermal performance with RθJM = 0.45 °C/W.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under high-temperature automotive conditions. Its unidirectional polarity and heatsink-anode configuration enable direct mounting to metal chassis for enhanced thermal dissipation during 10 ms exponential load dump events.
The device meets MSL Level 1 per J-STD-020 (245 °C peak reflow), supports 600 A non-repetitive forward surge current (IFSM), and exhibits a positive VBR temperature coefficient of +0.087 %/°C - enabling predictable voltage shift across its full −55 °C to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24.0 V - maximum continuous reverse working voltage before clamping begins; defines system bus voltage compatibility. |
| VBR (min/typ/max) | 26.7 / 28.1 / 29.5 V at 5 mA - precise breakdown threshold ensures reliable turn-on during transients without false triggering. |
| VC @ IPPM | 38.9 V at 118 A (10/1000 μs) - clamping voltage limits downstream IC stress during high-energy surges. |
| PPPM | 4600 W (10/1000 μs) - enables robust protection against ISO7637-2 Pulse 5a load dump events. |
| TJ max. | +175 °C - supports under-hood automotive placement without derating in high-ambient environments. |
| RθJM | 0.45 °C/W - low junction-to-mount thermal resistance allows efficient heat transfer to PCB copper or metal heatsink. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including HTGB, HTRB, and temperature cycling. |
Pinout & Package
Package: DO-218AB - molded surface-mount case with integral metal heatsink (anode terminal), UL 94 V-0 rated compound, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (Anode) | Anode connection | Connected to heatsink tab; must be soldered to large copper area or chassis for optimal thermal and surge current path. |
| Lead 2 (Cathode) | Cathode connection | High-side transient input node; connects to protected line (e.g., battery rail); clamps to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage over lifetime and temperature. |
| Heatsink-anode configuration | Direct thermal coupling to PCB copper or chassis reduces junction temperature rise by >50 % vs. standard SMD packages. |
| ISO7637-2 compliance | Validated for Pulse 5a (load dump) up to 35 V test voltage with 10 ms exponential waveform. |
| MSL Level 1 rating | Supports single-reflow assembly at 245 °C peak without popcorn or delamination risk. |
| Low TJ drift | +0.087 %/°C VBR tempco enables accurate clamping prediction across full automotive temperature range. |
Applications
| Automotive Battery Rail Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Protects 12 V battery-fed circuits from load dump transients (up to 35 V, 10 ms) during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU power input, clamping within 1 ns to limit voltage to ≤38.9 V. Use Value: Prevents damage to downstream DC/DC converters and microcontrollers by absorbing 4600 W surge energy without degradation. |
Use Scenario: Shields ECU sensor interface and communication lines from coupled transients induced by solenoid switching or ignition noise. IC Role / Device Role / Timing Role: Secondary TVS on regulated 5 V or 3.3 V supply rails, activated only after primary front-end suppression. Use Value: Adds redundancy to meet ASIL-B functional safety requirements while maintaining <10 μA leakage at nominal rail voltage. |
| Body Control Module (BCM) Power Input | ADAS Camera Power Line Protection |
Use Scenario: Secures BCM power inputs exposed to long harness runs where inductive kickback and lightning-induced surges occur. IC Role / Device Role / Timing Role: Primary transient suppressor mounted at PCB edge, with anode tied to chassis ground plane. Use Value: Enables operation at 175 °C ambient without derating, critical for under-dash or near-engine bay placement. |
Use Scenario: Protects 12 V camera module power input in rear-view or surround-view systems subject to vehicle-level EMC testing. IC Role / Device Role / Timing Role: Fast-response TVS placed immediately after connector, before DC/DC conversion stage. Use Value: Clamps ISO16750-2 pulses (Pulse 4, 12 V system) to safe levels while maintaining signal integrity for high-speed video links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM6S24AHM3 | Same electrical specs and DO-218AB package; HM3 suffix indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified variant with updated material formulation. | No functional difference; intended as drop-in replacement for HE3-series in new designs per Vishay's "Not For New Designs" notice. | Select SM6S24AHM3 for new automotive designs requiring latest material compliance and lifecycle support. |
| SMAJ24A | Lower PPPM (400 W), SMA package (RθJA ≈ 60 °C/W), VBR = 26.7–29.5 V, but not AEC-Q101 qualified and limited to 150 °C TJ max. | Suitable for industrial or consumer applications with lower surge energy requirements and less stringent reliability demands. | Use SMAJ24A only in non-automotive contexts where cost sensitivity outweighs thermal and qualification requirements. |
Compared with SM6S24AHE3_A/I, SM6S24AHM3 offers identical protection performance with extended material compliance, while SMAJ24A trades surge capability, thermal robustness, and automotive qualification for lower cost and smaller footprint in less demanding environments.
Availability
SM6S24AHE3_A/I is available at Aetrix Electronics and suitable for automotive battery rail protection, engine control unit (ECU) input protection, and body control module (BCM) power input applications requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for SM6S24AHE3_A/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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on automotive, industrial, and computing applications.
The SM6SxxA family is engineered specifically for high-energy automotive load dump protection, leveraging DO-218AB's metal heatsink architecture to achieve 4600 W surge capability and 175 °C operation without external heatsinking.
FAQ
What is the clamping voltage of SM6S24AHE3_A/I at its rated peak pulse current?
The SM6S24AHE3_A/I has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current of 118 A under the standard 10/1000 μs waveform. This value is measured at TC = 25 °C and ensures downstream components remain within safe voltage limits during ISO7637-2 load dump events. The SM6S24AHE3_A/I maintains this clamping performance across its full operating temperature range due to its stable passivated junction design.
Is SM6S24AHE3_A/I suitable for new automotive designs?
No - Vishay explicitly marks SM6S24AHE3_A/I as "Not For New Designs" and recommends SM6S24AHM3 as the alternative. The SM6S24AHE3_A/I remains available for legacy program support and existing production, but new designs should use the HM3-suffix variant to ensure long-term material compliance, AEC-Q101 qualification continuity, and manufacturing support. The SM6S24AHE3_A/I and SM6S24AHM3 share identical electrical and mechanical specifications.
What does the "HE3_A/I" suffix mean in SM6S24AHE3_A/I?
In SM6S24AHE3_A/I, "H" denotes AEC-Q101 qualification, "E3" indicates RoHS-compliant, halogen-free, lead-free termination, "A" specifies ±5 % VBR tolerance and unidirectional polarity, and "I" is the preferred package code for 13″ tape-and-reel delivery with anode orientation toward sprocket holes. The "_A/I" suffix confirms compliance with Vishay's automotive-grade material and packaging standards for the SM6S24AHE3_A/I device.
How does the DO-218AB package of SM6S24AHE3_A/I improve thermal performance?
The DO-218AB package of SM6S24AHE3_A/I integrates a metal heatsink directly connected to the anode, achieving a junction-to-mount thermal resistance (RθJM) of just 0.45 °C/W. This allows efficient heat transfer to PCB copper pours or chassis mounts, reducing steady-state junction temperature rise by over 50 % compared to standard SMA or SMB packages. As a result, the SM6S24AHE3_A/I sustains 4600 W surge capability without external heatsinking - a critical advantage for space-constrained automotive modules.
Does SM6S24AHE3_A/I meet ISO7637-2 requirements?
Yes - the SM6S24AHE3_A/I is validated to meet ISO7637-2 for load dump (Pulse 5a) under specified test conditions, including 35 V test voltage and 10 ms exponential waveform. Its 4600 W peak pulse power rating and 38.9 V clamping voltage ensure compliance when properly mounted with adequate anode thermal coupling. System-level validation per ISO7637-2 remains the responsibility of the end designer, but the SM6S24AHE3_A/I provides the foundational protection capability required.
SM6S24AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 118A
- 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-218AB
SM6S24AHE3_A/I FAQ
1.How can I place an order for SM6S24AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S24AHE3_A/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 SM6S24AHE3_A/I reliable?
The price and inventory of SM6S24AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S24AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM6S24AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S24AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S24AHE3_A/I?
SM6S24AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S24AHE3_A/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 SM6S24AHE3_A/I?
For technical support, including SM6S24AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S24AHE3_A/I requirements.
6.How does Aetrix verify that SM6S24AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6S24AHE3_A/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 SM6S24AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM6S24AHE3_A/I?
All SM6S24AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6S24AHE3_A/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 SM6S24AHE3_A/I part is unused and in its original packaging.
Return procedure for SM6S24AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6S24AHE3_A/I 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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 …
