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Vishay General Semiconductor - Diodes Division SMA5J8.0AHM3/I
- Part No.:
- SMA5J8.0AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.0AHM3/I.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,177
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Product details
Overview
SMA5J8.0AHM3/I 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 (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J8.0AHM3/I datasheet, SMA5J8.0AHM3/I pinout, SMA5J8.0AHM3/I application, or SMA5J8.0AHM3/I equivalent, key selection criteria include verified clamping performance under 36.8 A surge, unidirectional polarity with cathode band marking, halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification readiness, and thermal resistance (RθJA = 80 °C/W) for surface-mount PCB designs requiring robust ESD and lightning surge immunity.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (8.89–9.83 V), it avalanches to limit transient energy across protected circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM), while low incremental surge resistance enables rapid response to 10/1000 μs transients without thermal runaway.
The SMA5J8.0AHM3/I is rated for TJ = –55 °C to +150 °C operation, meets MSL Level 1 (260 °C reflow), and supports automated placement via matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Its DO-214AC outline provides mechanical robustness and thermal dissipation on 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail (e.g., 9–12 V supply lines) |
| VBR (min/max) | 8.89 V / 9.83 V at IT = 1 mA - defines precise avalanche onset window for predictable turn-on behavior |
| VC @ IPPM | 13.6 V at 36.8 A - clamped voltage during 500 W surge; determines maximum stress on downstream ICs |
| PPPM | 500 W - peak pulse power handling capability with 10/1000 μs waveform; validates protection against IEC 61000-4-5 Level 4 surges |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max. | +150 °C - maximum junction temperature rating enables reliable operation in under-hood automotive or enclosed industrial environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with molded UL 94 V-0 compound and cathode band marking for unidirectional polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-banded end is opposite) | Connected to ground or lower-potential node in unidirectional clamp configuration |
| Cathode | Avalanche breakdown terminal (marked by band) | Connected to protected line (e.g., 12 V rail or sensor input); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction (HM3) | Meets environmental compliance requirements for automotive and industrial OEMs without compromising surge robustness |
| AEC-Q101 qualification ready (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test conditions |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under repeated surge events and thermal cycling |
| Low RθJA = 80 °C/W | Enables effective heat dissipation on standard FR-4 PCBs with minimum 5.0 mm × 5.0 mm copper pads per terminal |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow soldering without popcorn cracking or delamination risk |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges above 13.6 V. Use Value: Limits peak voltage seen by MCU power pins to ≤13.6 V during 500 W transients, preventing latch-up or permanent damage. |
Use Scenario: Safeguarding analog inputs of pressure/temperature sensors connected to 24 V PLC backplanes exposed to inductive switching noise. IC Role / Device Role / Timing Role: Standoff-clamp TVS on sensor signal line referenced to local ground, absorbing fast-rising EFT bursts. Use Value: Maintains signal fidelity with <1.0 μA leakage at 8.0 V, while clamping 36.8 A surges within 1 ns response time. |
| DC-DC Converter Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Input-side surge suppression for buck converters in factory automation systems subject to 4 kV EFT per IEC 61000-4-4. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of input capacitor and controller IC. Use Value: Absorbs repetitive 10/1000 μs surges without degradation, preserving converter efficiency and startup reliability. |
Use Scenario: Protecting high-side gate driver ICs from Miller-induced voltage spikes during IGBT/MOSFET switching in servo drives. IC Role / Device Role / Timing Role: Localized TVS across gate-source terminals or supply rails to suppress dv/dt-induced transients. Use Value: Fast avalanche response prevents false triggering or gate oxide breakdown under 36.8 A transient currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J8.0AHE3/I | Same electrical specs, but RoHS-compliant commercial grade (HE3) without halogen-free certification | Lacks halogen-free compliance; suitable for non-automotive industrial use where material restrictions are less stringent | Select SMA5J8.0AHE3/I if halogen-free requirement is not mandated and cost optimization is prioritized |
| SMC5J8.0AHE3 | Same VWM/VBR/VC ratings but larger SMC (DO-214AB) package with higher thermal mass (RθJA = 40 °C/W) | Better thermal performance for high-duty-cycle surges; requires larger PCB footprint and different pad layout | Choose SMC5J8.0AHE3 only when sustained surge repetition or elevated ambient temperatures exceed SMA5J8.0AHM3/I's 80 °C/W limit |
Compared with SMA5J8.0AHE3/I, the SMA5J8.0AHM3/I adds halogen-free compliance for automotive supply chains, while versus SMC5J8.0AHE3, it trades thermal derating headroom for space-constrained layouts - making SMA5J8.0AHM3/I optimal for AEC-Q101-aligned, high-density automotive modules.
Availability
SMA5J8.0AHM3/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC-DC converter input surge suppression requiring stable component supply across production lifecycles.
Supply support for SMA5J8.0AHM3/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, TVS devices, and optoelectronics with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial applications, delivering 500 W surge capability in the compact SMA package while meeting AEC-Q101 and RoHS/halogen-free mandates.
FAQ
What is the clamping voltage of the SMA5J8.0AHM3/I under maximum surge conditions?
The SMA5J8.0AHM3/I has a maximum clamping voltage (VC) of 13.6 V at its rated peak pulse current (IPPM) of 36.8 A, measured with a 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during a full 500 W transient event. The SMA5J8.0AHM3/I maintains this clamping performance across its qualified operating temperature range.
Is the SMA5J8.0AHM3/I suitable for automotive applications?
Yes - the SMA5J8.0AHM3/I carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and AEC-Q101 qualification readiness. While final AEC-Q101 test reports are device-batch-specific, the HM3 variant is manufactured and tested to meet all stress requirements of AEC-Q101, including HTGB, H3TRB, and surge endurance, making SMA5J8.0AHM3/I appropriate for under-hood and body-control module designs.
How does the SMA5J8.0AHM3/I differ from the SMA5J8.0A-E3/61 variant?
The SMA5J8.0AHM3/I differs from SMA5J8.0A-E3/61 primarily in material composition and qualification: HM3 denotes halogen-free and AEC-Q101-ready construction, whereas E3 indicates standard RoHS-compliant commercial grade without halogen-free certification or automotive qualification. Both share identical electrical parameters and SMA (DO-214AC) packaging, but SMA5J8.0AHM3/I supports stricter automotive supply chain requirements.
What is the thermal resistance of the SMA5J8.0AHM3/I, and how does it affect PCB layout?
The SMA5J8.0AHM3/I 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. This value directly informs minimum copper area requirements: reducing pad size increases thermal impedance, risking junction overheating during repeated surges. For reliable 500 W pulse handling, the SMA5J8.0AHM3/I must be placed per Vishay's recommended mounting layout in the datasheet.
Does the SMA5J8.0AHM3/I have polarity marking, and how is it identified?
Yes - the SMA5J8.0AHM3/I is unidirectional and features a visible cathode band on the SMA (DO-214AC) package body. This band identifies the cathode terminal, which must be connected to the line being protected (e.g., 12 V rail), while the anode connects to ground. Bidirectional variants use CA suffixes and lack polarity marking; the SMA5J8.0AHM3/I's band ensures correct orientation during automated placement and manual inspection.
SMA5J8.0AHM3/I 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/I FAQ
1.How can I place an order for SMA5J8.0AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.0AHM3/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 SMA5J8.0AHM3/I reliable?
The price and inventory of SMA5J8.0AHM3/I 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/I is usually 5 days.
3.What payment methods are accepted for SMA5J8.0AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.0AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.0AHM3/I?
SMA5J8.0AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.0AHM3/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 SMA5J8.0AHM3/I?
For technical support, including SMA5J8.0AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.0AHM3/I requirements.
6.How does Aetrix verify that SMA5J8.0AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMA5J8.0AHM3/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 SMA5J8.0AHM3/I meets industry standards.
7.What is the process for return or replacement of SMA5J8.0AHM3/I?
All SMA5J8.0AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.0AHM3/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 SMA5J8.0AHM3/I part is unused and in its original packaging.
Return procedure for SMA5J8.0AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J8.0AHM3/I Tags
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