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Vishay General Semiconductor - Diodes Division SMA5J8.0AHM3/H
- Part No.:
- SMA5J8.0AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.0AHM3/H.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
SMA5J8.0AHM3/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 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR at 1 mA), 13.6 V clamping voltage (VC) at 36.8 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications.
For engineers reviewing the SMA5J8.0AHM3/H datasheet, SMA5J8.0AHM3/H pinout, SMA5J8.0AHM3/H application, or SMA5J8.0AHM3/H equivalent, key selection criteria include clamping performance under 36.8 A surge, thermal resistance (RθJA = 80 °C/W), junction temperature range (−55 to +150 °C), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to limit transient overvoltages before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), critical for protecting sensitive inputs against ESD and inductive switching spikes.
The SMA5J8.0AHM3/H is rated for 500 W peak pulse power under standardized 10/1000 µs waveform conditions, with derating above 25 °C per Fig. 2 of the datasheet. Its low incremental surge resistance enables effective energy absorption without excessive voltage overshoot during repetitive or single-event transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for normal circuit operation. |
| VBR (min/max) | 8.89 V / 9.83 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on within specified tolerance. |
| VC @ IPPM | 13.6 V at 36.8 A - Clamped voltage during full-rated 500 W surge; defines worst-case overvoltage seen by protected device. |
| IPPM | 36.8 A - Peak pulse current capability under 10/1000 µs waveform; determines surge energy handling (500 W). |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| RθJA | 80 °C/W - Thermal resistance junction-to-ambient on standard 5.0 mm × 5.0 mm pads; informs PCB thermal design requirements. |
| Leakage @ VWM | <1.0 µA - Ultra-low reverse leakage ensures minimal standby power loss and signal integrity on high-impedance lines. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band at one end; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge or bias. |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 8 V rail); avalanches into conduction when transient exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per stress test plan. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets environmental compliance requirements for modern automotive and industrial manufacturing without compromising performance. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or pre-bake requirements. |
| Glass-passivated junction | Ensures stable electrical parameters over time and temperature, with low leakage and repeatable clamping behavior. |
| Low Rsurge and fast response | Minimizes voltage overshoot during sub-ns transients (e.g., ESD, relay bounce), protecting CMOS inputs and gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 8 V supply rails in body control modules (BCM) and lighting drivers from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and ground to clamp surges exceeding 8.0 V while remaining inactive during nominal operation. Use Value: Limits transient voltage to ≤13.6 V at 36.8 A, preventing latch-up or gate oxide damage in connected MCUs and driver ICs. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to motor switching noise. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) clamping device on signal lines referenced to 8 V supplies or biased amplifiers. Use Value: Maintains signal fidelity during 500 W surges while adding negligible DC loading due to ultra-low reverse leakage. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters with 8–9 V output rails. IC Role / Device Role / Timing Role: Fast-response TVS mounted adjacent to DC-DC controller ICs to absorb coupling transients from primary-side switching. Use Value: Clamps within nanoseconds to 13.6 V, avoiding false triggering of OVP circuits while surviving repeated 500 W pulses. |
Use Scenario: Surge protection on −48 V telecom power feeds where 8 V reference-based monitoring circuits require robustness. IC Role / Device Role / Timing Role: Unidirectional suppressor used in conjunction with series impedance to protect voltage supervisors and PMICs. Use Value: Withstands 40 A IFSM (8.3 ms half-sine) and maintains <1 µA leakage at −8 V, enabling accurate low-current sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J8.0A-M3/61 | No AEC-Q101 qualification; same electrical specs and HM3 packaging except automotive stress testing not performed. | Suitable for commercial/industrial use only; not approved for automotive under-hood deployment. | Select SMA5J8.0AHM3/H when AEC-Q101 compliance is mandatory; otherwise SMA5J8.0A-M3/61 offers identical clamping performance at lower cost. |
| SMA6J8.0AHE3/A | Same VWM/VC, but rated for 600 W PPPM and higher IPPM (44.2 A); uses HE3 (AEC-Q101) suffix with RoHS but not halogen-free. | Higher surge margin for harsher environments (e.g., engine control units); requires verification of board space for larger thermal footprint. | Choose SMA6J8.0AHE3/A if system-level surge testing exceeds 500 W; SMA5J8.0AHM3/H remains optimal for cost- and space-constrained AEC-Q101 designs. |
Compared with SMA5J8.0A-M3/61, the SMA5J8.0AHM3/H adds automotive qualification without altering clamping behavior; versus SMA6J8.0AHE3/A, it trades 100 W surge headroom for halogen-free compliance and tighter board area usage in compact modules.
Availability
SMA5J8.0AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for SMA5J8.0AHM3/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 was developed to deliver high-power-density transient protection in compact surface-mount packages for automotive and industrial systems demanding AEC-Q101 validation and consistent clamping performance.
FAQ
What is the maximum clamping voltage of the SMA5J8.0AHM3/H under rated surge conditions?
The SMA5J8.0AHM3/H has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current of 36.8 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream components.
Is the SMA5J8.0AHM3/H suitable for automotive applications?
Yes, the SMA5J8.0AHM3/H is explicitly AEC-Q101 qualified, as indicated by the "HM3" suffix and documented in Vishay's ordering information table. It meets stress test requirements for temperature cycling, high-temperature reverse bias, and ESD robustness required for under-hood and chassis-mounted automotive electronics.
What does the "HM3" suffix signify in SMA5J8.0AHM3/H?
The "HM3" suffix in SMA5J8.0AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates automotive grade, "M" confirms halogen-free materials, and "3" specifies the preferred packaging format-distinct from commercial-grade "M3" or non-automotive "E3" variants.
How does the thermal resistance of SMA5J8.0AHM3/H affect PCB layout?
The SMA5J8.0AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C during 500 W surges, designers must provide adequate copper area and avoid thermal bottlenecks in the pad-to-plane connection.
Can SMA5J8.0AHM3/H be used in bidirectional configurations?
No, SMA5J8.0AHM3/H is a unidirectional TVS diode, as confirmed by its part number structure (no "CA" suffix) and polarity marking (cathode band). Bidirectional operation requires CA-suffixed variants like SMA5J8.0CA; using SMA5J8.0AHM3/H in reverse-biased AC paths would result in forward conduction and failure.
SMA5J8.0AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 36.8A
- 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)
SMA5J8.0AHM3/H FAQ
1.How can I place an order for SMA5J8.0AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.0AHM3/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 SMA5J8.0AHM3/H reliable?
The price and inventory of SMA5J8.0AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J8.0AHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J8.0AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.0AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.0AHM3/H?
SMA5J8.0AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.0AHM3/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 SMA5J8.0AHM3/H?
For technical support, including SMA5J8.0AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.0AHM3/H requirements.
6.How does Aetrix verify that SMA5J8.0AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J8.0AHM3/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 SMA5J8.0AHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J8.0AHM3/H?
All SMA5J8.0AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.0AHM3/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 SMA5J8.0AHM3/H part is unused and in its original packaging.
Return procedure for SMA5J8.0AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J8.0AHM3/H Tags
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