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Vishay General Semiconductor - Diodes Division SMA5J24AHM3_A/H
- Part No.:
- SMA5J24AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24AHM3_A/H.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,904
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Product details
Overview
SMA5J24AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), 38.9 V clamping voltage at 12.9 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J24AHM3_A/H datasheet, SMA5J24AHM3_A/H pinout, SMA5J24AHM3_A/H application, or SMA5J24AHM3_A/H equivalent, key selection criteria include clamping performance under 12.9 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification status, thermal resistance (RθJA = 80 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (26.7–29.5 V), it avalanches to limit transient energy across protected circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at 24 V) and fast response time (<1.0 ps), critical for safeguarding sensitive inputs against ESD and inductive switching spikes.
Designed for surface-mount use in high-reliability environments, SMA5J24AHM3_A/H meets MSL Level 1 (260 °C reflow peak), JESD201 Class 2 whisker resistance, and halogen-free RoHS compliance (HM3 suffix). The SMA package enables compact layout while maintaining 150 °C max junction temperature and 40 A IFSM surge rating for unidirectional operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 26.7 V / 29.5 V - guaranteed avalanche onset range at 1 mA test current |
| VC @ IPPM | 38.9 V - clamped voltage during 12.9 A 10/1000 µs surge, defining worst-case overvoltage seen by downstream circuitry |
| PPPM | 500 W - peak transient power handling capability per single 10/1000 µs pulse |
| ID @ VWM | <1.0 µA - reverse leakage ensuring minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive or industrial enclosures |
| RθJA | 80 °C/W - thermal resistance from junction to ambient on standard 5.0 mm × 5.0 mm copper pads |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; conducts during forward surge or bias |
| Cathode | Reverse voltage reference / clamping node | Marked with band; connected to higher-potential side; avalanches when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | Meets environmental compliance requirements for automotive and industrial PCB assembly without compromising surge robustness |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per stress test standard |
| Glass-passivated junction | Ensures stable VBR tolerance, low leakage drift over time, and immunity to moisture-induced degradation |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning or dry-pack requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision for sensitive 24 V logic and power rails |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) and body control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input to divert >500 W surges away from regulator ICs. Use Value: Limits transient voltage to ≤38.9 V during 12.9 A surge, preventing latch-up or gate oxide damage in downstream PMICs and microcontrollers. | Use Scenario: Safeguarding analog front-end inputs of pressure or temperature sensors exposed to cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Shunt protector on sensor signal line (e.g., 4–20 mA loop or CAN PHY interface) to clamp ESD and inductive kickback. Use Value: Sub-1 µA leakage at 24 V preserves signal accuracy; fast avalanche response (<1 ps) prevents transient coupling into ADC reference paths. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive Protection |
Use Scenario: Input-stage surge suppression in 24 V telecom power supplies subjected to lightning-induced surges on AC/DC primary side. IC Role / Device Role / Timing Role: Primary-side TVS mounted across bulk capacitor input to absorb line-to-ground transients before isolation barrier. Use Value: 500 W PPPM rating handles repeated 10/1000 µs surges per IEC 61000-4-5 Level 4 without degradation; RθJA = 80 °C/W supports natural convection cooling. | Use Scenario: Protection of H-bridge gate drivers in smart home appliance motor controllers exposed to back-EMF from brushed DC motors. IC Role / Device Role / Timing Role: Unidirectional clamp across half-bridge supply rail to suppress inductive turn-off spikes exceeding 24 V nominal. Use Value: Clamps at 38.9 V within nanoseconds, preventing overvoltage stress on MOSFET gate oxides and driver IC outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J24AHE3_A/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial-grade industrial equipment where automotive qualification is not required | Select when cost sensitivity outweighs halogen-free or automotive reliability requirements |
| SMCJ24A | Higher 1500 W PPPM rating in larger SMC (DO-214AB) package; same VWM/VBR/VC specs | Better suited for higher-energy surge environments (e.g., outdoor telecom cabinets) where board space allows larger footprint | Choose when system-level surge testing requires >500 W margin and PCB layout accommodates SMC outline |
Compared with SMA5J24AHM3_A/H, SMA5J24AHE3_A/H offers identical electrical specs but reduced environmental and automotive qualifications, while SMCJ24A provides triple the surge power handling in a physically larger package - making SMA5J24AHM3_A/H optimal for space-constrained, halogen-free, AEC-Q101–compliant 24 V protection.
Availability
SMA5J24AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer appliance motor drives requiring stable component supply with full traceability and lifecycle management.
Supply support for SMA5J24AHM3_A/H 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - particularly targeting automotive, industrial, and telecom systems where AEC-Q101 qualification and halogen-free compliance are mandatory.
FAQ
What is the clamping voltage of the SMA5J24AHM3_A/H under maximum rated surge current?
The SMA5J24AHM3_A/H has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current (IPPM) of 12.9 A using a 10/1000 µs waveform. This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMA5J24AHM3_A/H maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is SMA5J24AHM3_A/H qualified for automotive applications?
Yes, SMA5J24AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix designation and documentation in Vishay's official datasheet (Document Number: 88875, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, humidity bias, mechanical shock, and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics. The SMA5J24AHM3_A/H also meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow requirements.
What does the "HM3" suffix indicate in SMA5J24AHM3_A/H?
The "HM3" suffix in SMA5J24AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" identifies the halogen-free material set, "M3" confirms RoHS compliance and JESD201 Class 2 whisker resistance, and the "_A/H" revision code specifies the manufacturing lot and packaging configuration (7" tape and reel, 1800 units). This distinguishes it from E3 (RoHS only) and HE3 (AEC-Q101 + RoHS, non-halogen-free) variants.
How does SMA5J24AHM3_A/H differ from SMA5J24AHE3_A/H?
SMA5J24AHM3_A/H and SMA5J24AHE3_A/H share identical electrical specifications (VWM = 24 V, VBR = 26.7–29.5 V, VC = 38.9 V), but differ in material compliance and qualification: SMA5J24AHM3_A/H is halogen-free and AEC-Q101 qualified, whereas SMA5J24AHE3_A/H is RoHS-compliant and AEC-Q101 qualified but not halogen-free. Both use the same SMA (DO-214AC) package and mounting pad layout, making them drop-in replacements electrically - though material certifications must be verified per end-equipment requirements.
What is the maximum reverse leakage current for SMA5J24AHM3_A/H at its stand-off voltage?
The maximum reverse leakage current (ID) for SMA5J24AHM3_A/H is 1.0 µA when biased at its 24 V stand-off voltage (VWM) and tested at 25 °C ambient temperature. This low leakage ensures minimal power loss and signal interference in high-impedance circuits such as sensor bias networks or precision analog monitoring paths. The SMA5J24AHM3_A/H maintains this specification across its full operating temperature range (-55 °C to +150 °C), supported by its glass-passivated junction structure.
SMA5J24AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- 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):
- 12.9A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J24AHM3_A/H FAQ
1.How can I place an order for SMA5J24AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24AHM3_A/H 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 SMA5J24AHM3_A/H reliable?
The price and inventory of SMA5J24AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J24AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J24AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24AHM3_A/H?
SMA5J24AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24AHM3_A/H 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 SMA5J24AHM3_A/H?
For technical support, including SMA5J24AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24AHM3_A/H requirements.
6.How does Aetrix verify that SMA5J24AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J24AHM3_A/H 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 SMA5J24AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J24AHM3_A/H?
All SMA5J24AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24AHM3_A/H, 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 SMA5J24AHM3_A/H part is unused and in its original packaging.
Return procedure for SMA5J24AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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