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Vishay General Semiconductor - Diodes Division SMA5J24AHE3/61
- Part No.:
- SMA5J24AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24AHE3/61.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,733
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Product details
Overview
SMA5J24AHE3/61 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 at 1 mA), 38.9 V clamping voltage (VC) at 12.9 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMA5J24AHE3/61 datasheet, SMA5J24AHE3/61 pinout, SMA5J24AHE3/61 application, or SMA5J24AHE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 24 V), then rapidly switches to low-impedance conduction when transient voltage exceeds VBR, clamping the line to ≤38.9 V. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns).
Rated for 500 W peak pulse power with 10/1000 µs waveform and derated above 25 °C per Fig. 2, it supports repetitive surge events when thermally managed via 0.2" × 0.2" copper pads. The SMA package provides MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before significant leakage begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - guaranteed breakdown range ensuring reliable triggering without premature conduction. |
| VC @ IPPM | 38.9 V at 12.9 A - clamping voltage during 500 W surge; limits protected circuit stress below IC absolute maximum ratings. |
| PPPM | 500 W - peak pulse power handling capability with 10/1000 µs waveform; enables robust protection against lightning-induced transients. |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood automotive or high-ambient industrial environments. |
| RθJA | 80 °C/W - thermal resistance junction-to-ambient; requires minimum 0.2" × 0.2" copper pad per terminal for rated power dissipation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity indicated by cathode band. Matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Meets J-STD-020 MSL Level 1, LF peak 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or surge clamping | Connected to protected line (e.g., 24 V rail); must be routed with low-inductance trace to minimize overshoot. |
| Cathode | Current exit terminal; marked with band | Connected to ground or lower-potential reference; establishes unidirectional clamping direction from line to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables compact layout in space-constrained modules (e.g., ECU housings, motor drivers) while supporting automated pick-and-place. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature, critical for long-term reliability in automotive applications. |
| AEC-Q101 qualification | Validated for automotive-grade stress testing (HTOL, TC, HAST), enabling use in engine control, ADAS, and body electronics. |
| Fast response time | <1 ns turn-on delay minimizes voltage overshoot during ESD or switching transients, protecting sensitive gate oxides. |
| Low incremental surge resistance | Reduces clamping voltage rise under high-current surges, improving protection margin for downstream components. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units (ECUs) from load-dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and local regulator input. Use Value: Clamps transients to ≤38.9 V, preventing damage to 40 V-rated DC/DC controllers and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Point-of-entry protection on twisted-pair signal lines before instrumentation amplifier inputs. Use Value: Limits induced voltage to <40 V, preserving ADC input integrity and avoiding latch-up in precision front-end circuits. |
| Motor Drive Gate Protection | Telecom Power Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gates driven by isolated gate drivers in BLDC inverters. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp Miller-induced spikes during fast switching. Use Value: Suppresses >100 V spikes to <40 V within nanoseconds, preventing gate oxide rupture and unintended turn-on. |
Use Scenario: Front-end surge suppression on 24 V PoE-powered telecom equipment exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on DC input before DC/DC converter and system controller. Use Value: Absorbs 500 W pulses per IEC 61000-4-5 Level 4, maintaining system uptime without fuse blow or component failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ24A | Same SMA package, 24 V VWM, but rated for 400 W PPPM; VC = 38.9 V at 10.3 A. | Lower peak power handling reduces margin for severe load-dump events; suitable for less demanding industrial use. | Select SMAJ24A only if system-level surge testing confirms 400 W sufficiency and cost optimization is prioritized. |
| ON Semiconductor 1.5SMC24A | Higher package thermal resistance (RθJA = 100 °C/W), same 24 V VWM, VC = 39.4 V at 12.7 A, PPPM = 500 W. | Requires larger copper area for thermal management; not AEC-Q101 qualified - limited to commercial/industrial use. | Choose 1.5SMC24A for non-automotive designs where footprint compatibility is needed but AEC-Q101 is unnecessary. |
Compared with SMA5J24AHE3/61, SMAJ24A offers lower surge capacity and no automotive qualification, while 1.5SMC24A matches power rating but lacks AEC-Q101 and has inferior thermal performance - making SMA5J24AHE3/61 the preferred choice for automotive and thermally constrained applications.
Availability
SMA5J24AHE3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, and telecom power supplies requiring stable component supply with AEC-Q101 compliance, high surge immunity, and SMT manufacturability.
Supply support for SMA5J24AHE3/61 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 and automotive-grade validation.
The SMA5J series is engineered for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and precise clamping performance are mandatory.
FAQ
What is the polarity configuration of SMA5J24AHE3/61?
SMA5J24AHE3/61 is a unidirectional TVS diode, with the cathode identified by a visible band on the SMA (DO-214AC) package body. This configuration allows clamping only during reverse-voltage transients - i.e., from anode to cathode - making it ideal for protecting positive-rail systems referenced to ground. The SMA5J24AHE3/61 does not conduct in the forward direction beyond its specified 3.5 V forward voltage at 25 A.
Is SMA5J24AHE3/61 qualified for automotive applications?
Yes, SMA5J24AHE3/61 carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress test (HAST), confirming suitability for under-hood and chassis-mounted automotive electronics. The SMA5J24AHE3/61 is explicitly designated for automotive use in Vishay's ordering information and mechanical data tables.
What is the maximum clamping voltage of SMA5J24AHE3/61 under surge conditions?
The maximum clamping voltage (VC) of SMA5J24AHE3/61 is 38.9 V, measured at its peak pulse current (IPPM) of 12.9 A using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage seen by downstream components during a 500 W transient event. The SMA5J24AHE3/61 maintains this clamping performance due to low incremental surge resistance and stable junction characteristics.
How does the SMA5J24AHE3/61 differ from bidirectional variants like SMA5J24CA?
SMA5J24AHE3/61 is unidirectional and features a cathode band for polarity identification, whereas SMA5J24CA is bidirectional with no marking and symmetrical clamping in both directions. The SMA5J24AHE3/61 has a forward voltage drop (~3.5 V at 25 A) and is intended for single-polarity rail protection, while SMA5J24CA is used where AC signals or reversible voltage transients require clamping regardless of polarity. Their VBR and VC values also differ due to internal construction.
What PCB layout guidance applies to SMA5J24AHE3/61 for optimal thermal performance?
To achieve rated 500 W pulse power, SMA5J24AHE3/61 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet Figure 2 derating curve. Traces should be short and wide to minimize inductance and thermal resistance. The SMA5J24AHE3/61's RθJA of 80 °C/W assumes this layout; reducing pad size increases junction temperature and de-rates surge capability proportionally.
SMA5J24AHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J24AHE3/61 FAQ
1.How can I place an order for SMA5J24AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24AHE3/61 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 SMA5J24AHE3/61 reliable?
The price and inventory of SMA5J24AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J24AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J24AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24AHE3/61?
SMA5J24AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24AHE3/61 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 SMA5J24AHE3/61?
For technical support, including SMA5J24AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24AHE3/61 requirements.
6.How does Aetrix verify that SMA5J24AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J24AHE3/61 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 SMA5J24AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J24AHE3/61?
All SMA5J24AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24AHE3/61, 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 SMA5J24AHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J24AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J24AHE3/61 Tags
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