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Vishay General Semiconductor - Diodes Division SMA6J24AHM3/61
- Part No.:
- SMA6J24AHM3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J24AHM3/61.pdf
- Description:
- TVS DIODE 24VWM 37.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA6J24AHM3/61 from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in SMA (DO-214AC) package, with 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR at IT = 1 mA), and 37.8 V maximum clamping voltage (VC) at 15.9 A peak pulse current (IPP) under 10/1000 μs waveform. It delivers 600 W peak pulse power and is rated for 50 A IFSM surge current, used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients.
For engineers reviewing the SMA6J24AHM3/61 datasheet, SMA6J24AHM3/61 pinout, SMA6J24AHM3/61 application, or SMA6J24AHM3/61 equivalent, key selection criteria include clamping voltage margin relative to protected device's absolute maximum rating, thermal resistance (RθJA = 120 °C/W), unidirectional polarity requirement, and MSL Level 1 reflow compatibility at 260 °C peak.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert surge current away from downstream circuitry. Its dynamic resistance (RD = 0.523 Ω) directly determines clamping rise above VBR under transient conditions per VC ≈ VBR + RD × IPP.
Designed for PCB-level protection of low-voltage DC rails and signal paths, it features a 150 °C max junction temperature, -55 °C to +150 °C operating range, and meets J-STD-020 MSL Level 1-enabling standard SMT reflow without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse working voltage before leakage rises significantly; sets upper limit for protected line's nominal DC voltage. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Breakdown onset range; defines minimum overvoltage threshold at which clamping begins. |
| VC @ IPP | 37.8 V at 15.9 A (10/1000 μs) - Clamped voltage during standardized surge; must stay below protected device's absolute max rating. |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capacity under industry-standard lightning-surge waveform. |
| IFSM | 50 A - Non-repetitive forward surge rating; supports robustness against accidental reverse-bias misapplication or fault currents. |
| RθJA | 120 °C/W - Thermal resistance junction-to-ambient on standard 5 mm × 5 mm copper pads; dictates derating above 50 °C ambient. |
| Polarity | Unidirectional - Cathode-band marked; blocks forward conduction, clamps only negative transients on anode-referenced line. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads, UL 94 V-0 rated molding compound, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink node | Connected to protected line; conducts surge current toward ground when clamping activates. |
| Cathode | Reference/ground return path | Connected to system ground or low-impedance return; completes clamping path during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| MSL Level 1 compliance | Enables single-pass 260 °C lead-free reflow without baking; eliminates moisture-related popcorning risk in automated assembly. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and environmental regulations for industrial and consumer end equipment. |
| Low dynamic resistance (RD = 0.523 Ω) | Minimizes voltage overshoot during fast-rising transients, improving clamping precision for sensitive 24 V logic interfaces. |
| 150 °C maximum junction temperature | Supports operation in high-temperature environments such as automotive engine compartments or industrial motor drives. |
| 5.0 mm × 5.0 mm pad layout optimized | Provides defined thermal path for 4 W power dissipation at TA = 50 °C; ensures repeatable solder joint reliability and thermal performance. |
Applications
| Industrial Motor Drive Control | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting gate drivers and microcontroller I/O pins from inductive kickback generated by relay and solenoid coil de-energization in PLC output stages. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed across 24 V supply rail and signal inputs to clamp sub-μs voltage spikes before they reach logic-level components. Use Value: Limits clamped voltage to 37.8 V, maintaining safe margin below 40 V absolute maximum ratings of common 24 V-rated MCUs and gate drivers. |
Use Scenario: Safeguarding LIN bus transceivers and sensor analog front-ends (e.g., temperature, position) against load dump and jump-start surges in vehicle body electronics. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and chassis ground to absorb negative-going transients while preserving signal integrity during normal operation. Use Value: Withstands 50 A IFSM and maintains stable VBR over -40 °C to +125 °C ambient, meeting ISO 7637-2 Pulse 1/2a immunity requirements. |
| Telecom Power Supply Input | Consumer Appliance Mainboard |
Use Scenario: Secondary-side overvoltage protection on 24 V DC input of PoE-powered network switches and base station RF modules. IC Role / Device Role / Timing Role: Standoff protector on DC input rail upstream of DC/DC converters, activated only during abnormal line surges exceeding 24 V. Use Value: 600 W PPPM rating handles telecom-grade 10/1000 μs surges; low leakage (<0.2 μA at VWM) avoids quiescent current penalty in always-on systems. |
Use Scenario: ESD and switching transient suppression on 24 V fan control, display backlight, and valve actuator outputs in smart HVAC and washing machine mainboards. IC Role / Device Role / Timing Role: Localized clamping device mounted adjacent to connector or MOSFET output stage to minimize inductance in surge path. Use Value: SMA package enables automated placement; halogen-free M3 construction satisfies IEC 61249-2-21 and regional eco-design mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J24A-E3/61 | Same electrical specs, RoHS-compliant but not halogen-free; uses SnPb-compatible matte tin plating without whisker mitigation class 2. | Preferred where halogen-free requirement is absent and cost sensitivity outweighs material compliance tiers. | Select SMA6J24A-E3/61 if IPC-1752A halogen reporting is not mandated and legacy tin-lead process compatibility is needed. |
| SMCJ24A-M3/57T | Higher 1500 W PPPM (10/1000 μs), DO-214AB (SMC) package, 2.5× larger footprint, RθJA = 30 °C/W. | Suitable for higher-energy surges where board space permits and thermal management requires lower junction rise. | Choose SMCJ24A-M3/57T only when surge threat level exceeds 600 W and thermal design allows larger SMC footprint. |
Compared with SMA6J24AHM3/61, SMA6J24A-E3/61 offers identical protection performance with reduced material compliance scope, while SMCJ24A-M3/57T trades compact size for 2.5× higher surge capacity and superior thermal dissipation-making SMA6J24AHM3/61 optimal for space-constrained 24 V industrial and automotive PCBs requiring halogen-free assurance.
Availability
SMA6J24AHM3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, halogen-free compliance, and MSL Level 1 SMT manufacturability.
Supply support for SMA6J24AHM3/61 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, power efficiency, and application-specific ruggedization.
The SMA6JxxA series is part of Vishay's TransZORB® TVS platform, engineered for robust, low-inductance transient suppression in space-constrained DC power and signal line applications across automotive, industrial, and communications infrastructure.
FAQ
What is the clamping voltage of the SMA6J24AHM3/61 under a 10/1000 μs surge?
The SMA6J24AHM3/61 has a maximum clamping voltage (VC) of 37.8 V at 15.9 A peak pulse current under the 10/1000 μs waveform. This value is measured per the test conditions specified in the Vishay datasheet (Document Number: 89460), with device mounted on 5.0 mm × 5.0 mm copper pads. The SMA6J24AHM3/61 achieves this clamping performance using its specified dynamic resistance of 0.523 Ω.
Is the SMA6J24AHM3/61 suitable for automotive applications requiring AEC-Q200 qualification?
No, the SMA6J24AHM3/61 is not AEC-Q200 qualified. It is an industrial-grade TVS diode rated for -55 °C to +150 °C junction temperature and compliant with J-STD-020 MSL Level 1, but Vishay does not list AEC-Q200 stress testing or qualification for this part number. For automotive-qualified alternatives, consult Vishay's Automotive TransZORB® portfolio, such as the AEC-Q200-certified SMAJ24A series.
What does the "HM3/61" suffix indicate in SMA6J24AHM3/61?
The "HM3/61" suffix denotes halogen-free, RoHS-compliant construction (M3), tape-and-reel packaging in 7-inch diameter reels (61), and Vishay's internal manufacturing code (H). The M3 grade meets JESD201 Class 2 whisker resistance and IPC-1752A material disclosure requirements. The "61" package code specifies 1800 units per reel, compatible with standard SMT pick-and-place feeders.
Can the SMA6J24AHM3/61 be used in bidirectional protection configurations?
No, the SMA6J24AHM3/61 is unidirectional only, as confirmed in the Vishay datasheet under FEATURES and ELECTRICAL CHARACTERISTICS. It clamps only reverse-polarity transients applied between anode and cathode. For bidirectional protection, two SMA6J24AHM3/61 devices must be connected in series opposition, or a dedicated bidirectional TVS such as SMBJ24A should be selected instead.
What is the thermal resistance and power derating behavior of the SMA6J24AHM3/61?
The SMA6J24AHM3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. Its power dissipation rating drops linearly above TA = 50 °C: PD = 4.0 W × (1 − (TA − 50)/100), reaching zero at TA = 150 °C. This derating curve is documented in Figure 2 of the Vishay datasheet (89460).
SMA6J24AHM3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.8V
- Current - Peak Pulse (10/1000µs):
- 15.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J24AHM3/61 FAQ
1.How can I place an order for SMA6J24AHM3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J24AHM3/61 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 SMA6J24AHM3/61 reliable?
The price and inventory of SMA6J24AHM3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J24AHM3/61 is usually 5 days.
3.What payment methods are accepted for SMA6J24AHM3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J24AHM3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J24AHM3/61?
SMA6J24AHM3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J24AHM3/61 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 SMA6J24AHM3/61?
For technical support, including SMA6J24AHM3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J24AHM3/61 requirements.
6.How does Aetrix verify that SMA6J24AHM3/61 is sourced from the original manufacturer or authorized distributors?
All SMA6J24AHM3/61 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 SMA6J24AHM3/61 meets industry standards.
7.What is the process for return or replacement of SMA6J24AHM3/61?
All SMA6J24AHM3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J24AHM3/61, 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 SMA6J24AHM3/61 part is unused and in its original packaging.
Return procedure for SMA6J24AHM3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J24AHM3/61 Tags
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