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Vishay General Semiconductor - Diodes Division SMA5J7.0AHM3/H
- Part No.:
- SMA5J7.0AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0AHM3/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,553
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Product details
Overview
SMA5J7.0AHM3/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 DC power rails and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V clamping voltage (VC) at 41.7 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMA5J7.0AHM3/H datasheet, SMA5J7.0AHM3/H pinout, SMA5J7.0AHM3/H application, or SMA5J7.0AHM3/H equivalent, key selection criteria include verified clamping performance under 41.7 A surge, halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification, 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 with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown and low incremental surge resistance. Its thermal resistance is 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature under transient stress.
The SMA5J7.0AHM3/H delivers consistent clamping at 12.0 V when subjected to a 10/1000 μs surge waveform, with <1 ns response time and <800 μA reverse leakage at 7.0 V - meeting IEC 61000-4-2/4-4/4-5 immunity requirements for Level 4 ESD and surge protection in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping initiates; sets safe DC rail margin for 5 V–12 V systems. |
| VBR min/max | 7.78 V / 8.60 V at 10 mA - tight breakdown tolerance ensures predictable turn-on across temperature and production lot. |
| VC @ IPPM | 12.0 V at 41.7 A - clamping voltage defines worst-case overvoltage seen by protected downstream circuitry. |
| PPPM | 500 W - peak pulse power rating with 10/1000 μs waveform; determines survivability against lightning-induced surges. |
| ID @ VWM | <800 μA - low leakage preserves battery life and avoids false triggering in low-power sensor nodes. |
| TJ max. | 150 °C - enables use in under-hood automotive modules and industrial enclosures without derating below full rating. |
| Package | SMA (DO-214AC) - surface-mount package with 5.28 mm × 4.50 mm footprint, compatible with standard reflow profiles (MSL level 1, 260 °C peak). |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, cathode indicated by a band at one end; terminals solderable per J-STD-002 and JESD 22-B102, meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; forms forward-biased path during positive transients on cathode side. |
| Cathode (banded end) | High-side connection point | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | HM3 suffix confirms compliance with JEDEC JESD201 Class 2 whisker resistance and environmental regulations for automotive-grade supply chains. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics, with extended temperature cycling and HTRB testing. |
| Glass-passivated junction | Ensures stable VBR and low leakage over 1000+ hours at 125 °C, critical for long-life industrial deployments. |
| Low RINC (incremental surge resistance) | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving protection margin for sensitive gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and LDO/regulator input. Use Value: Clamps transients to ≤12.0 V, preventing damage to 15 V-rated regulators and preserving system uptime during ISO 16750-2 tests. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog inputs. IC Role / Device Role / Timing Role: Point-of-entry protection on 4–20 mA loop or 0–10 V signal line. Use Value: Limits induced surges to <12.0 V while maintaining <800 μA leakage, avoiding signal offset errors in precision measurement circuits. |
| DC-DC Converter Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Shielding buck converter inputs from back-EMF spikes generated by solenoid switching in HVAC actuators. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of input filter capacitor. Use Value: Absorbs 500 W pulses without degradation, enabling compact 2-layer PCB layout with minimal trace inductance impact. |
Use Scenario: Protecting high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: Clamp placed between gate and source to limit VGS excursion. Use Value: Sub-1 ns response and 12.0 V clamping prevent gate oxide rupture in 600 V MOSFETs operating at >100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.0AHE3/H | RoHS-compliant but not halogen-free; lacks JESD201 Class 2 whisker resistance certification. | Suitable for commercial-grade industrial equipment where halogen-free requirement is not mandated. | Select SMA5J7.0AHE3/H only if AEC-Q101 qualification is unnecessary and halogen content is unrestricted. |
| SMA6J7.0A-M3 | 600 W PPPM rating, higher IPPM (45.5 A), same VWM/VBR/VC specs; larger SMA package variant with improved thermal dissipation. | Better suited for high-reliability 24 V systems requiring margin beyond 500 W, such as railway signaling or heavy machinery controls. | Choose SMA6J7.0A-M3 when surge energy exceeds 500 W limits or when extended thermal headroom is required for repeated surge events. |
Compared with SMA5J7.0AHE3/H and SMA6J7.0A-M3, the SMA5J7.0AHM3/H uniquely combines halogen-free construction, AEC-Q101 qualification, and precise 500 W/12.0 V clamping - making it optimal for Tier-1 automotive suppliers needing full compliance without over-spec'ing power rating.
Availability
SMA5J7.0AHM3/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, and DC-DC converter designs requiring stable component supply with full AEC-Q101 and halogen-free compliance.
Supply support for SMA5J7.0AHM3/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained SMT applications, targeting robust protection of power rails and signal paths in harsh electromagnetic environments.
FAQ
What is the clamping voltage of the SMA5J7.0AHM3/H under maximum surge conditions?
The SMA5J7.0AHM3/H has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current of 41.7 A using the standardized 10/1000 μs waveform. This value is measured at TJ = 25 °C on minimum recommended pad layout (0.2" × 0.2" copper), and represents the upper bound of overvoltage imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMA5J7.0AHM3/H qualified for automotive applications?
Yes, the SMA5J7.0AHM3/H carries the HM3 suffix, indicating it is halogen-free, RoHS-compliant, and AEC-Q101 qualified. This certification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST), validating its reliability for under-hood and chassis-mounted automotive electronics per ISO/TS 16949 requirements.
How does the HM3 suffix differ from the HE3 suffix in the SMA5J7.0A family?
The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction, whereas HE3 indicates RoHS-compliance and AEC-Q101 qualification but without halogen-free assurance. Both meet JESD201 Class 2 whisker resistance, but only HM3 satisfies strict automotive Tier-1 material declarations requiring zero brominated flame retardants and antimony trioxide.
What is the thermal resistance of the SMA5J7.0AHM3/H, and how does it affect PCB layout?
The SMA5J7.0AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead (RθJL) of 25 °C/W. To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must use ≥5.0 mm × 5.0 mm copper pads per terminal - smaller pads increase RθJA and risk thermal runaway during sustained transient activity.
Can the SMA5J7.0AHM3/H be used in bidirectional protection circuits?
No, the SMA5J7.0AHM3/H is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional protection requires CA-suffixed variants like SMA5J7.0CA. Using SMA5J7.0AHM3/H in AC or floating signal paths would result in forward conduction during negative half-cycles, causing failure or incorrect clamping behavior.
SMA5J7.0AHM3/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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- 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)
SMA5J7.0AHM3/H FAQ
1.How can I place an order for SMA5J7.0AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0AHM3/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 SMA5J7.0AHM3/H reliable?
The price and inventory of SMA5J7.0AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J7.0AHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J7.0AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0AHM3/H?
SMA5J7.0AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0AHM3/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 SMA5J7.0AHM3/H?
For technical support, including SMA5J7.0AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0AHM3/H requirements.
6.How does Aetrix verify that SMA5J7.0AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0AHM3/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 SMA5J7.0AHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J7.0AHM3/H?
All SMA5J7.0AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0AHM3/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 SMA5J7.0AHM3/H part is unused and in its original packaging.
Return procedure for SMA5J7.0AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J7.0AHM3/H Tags
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