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Vishay General Semiconductor - Diodes Division SMA6J8.0AHM3/61
- Part No.:
- SMA6J8.0AHM3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J8.0AHM3/61.pdf
- Description:
- TVS DIODE 8VWM 12.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA6J8.0AHM3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, with 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR at 10 mA), and 12.5 V maximum clamping voltage (VC) at 48.0 A peak pulse current (IPP) under 10/1000 µs waveform-designed for protecting MOSFETs and ICs against inductive switching transients in industrial power supplies.
For engineers reviewing the SMA6J8.0AHM3/61 datasheet, SMA6J8.0AHM3/61 pinout, SMA6J8.0AHM3/61 application, or SMA6J8.0AHM3/61 equivalent, key selection criteria include clamping performance at 48 A IPP, unidirectional polarity, 600 W peak pulse power (10/1000 µs), RoHS-compliant halogen-free construction, and MSL level 1 moisture sensitivity rating.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM = 8.0 V, avalanches sharply at VBR ≥ 8.89 V, and limits transient voltage to VC ≤ 12.5 V at rated IPP. Its dynamic resistance RD = 0.056 Ω ensures low voltage overshoot during fast transients.
Designed for PCB-level surge suppression, SMA6J8.0AHM3/61 uses a planar junction structure in an SMA package with matte tin-plated leads, rated for 150 °C max junction temperature and compliant with J-STD-002 solderability and JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 8.89 V / 9.83 V at 10 mA - Ensures reliable avalanche initiation within tight tolerance band |
| VC at IPP | 12.5 V at 48.0 A (10/1000 µs) - Clamps destructive surges to safe levels for downstream 12 V logic or gate drivers |
| PPPM (10/1000 µs) | 600 W - Sustains repetitive 1000 µs transients without thermal runaway on standard 5 mm × 5 mm copper pads |
| ID at VWM | ≤ 20 µA - Negligible leakage current preserves standby power integrity in battery-backed systems |
| Package | SMA (DO-214AC) - Industry-standard surface-mount outline enabling automated placement and reflow compatibility |
| Polarity | Unidirectional - Cathode marked by band; blocks reverse voltage, conducts only during positive transients |
Pinout & Package
SMA6J8.0AHM3/61 is housed in the SMA (DO-214AC) package: a molded plastic case with two coplanar leads, cathode identified by a color band, and dimensions of 4.50 mm × 2.79 mm × 2.20 mm (L × W × H). Leads are matte tin-plated per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping |
| Cathode | Protected line connection point | Connected to the line being protected (e.g., MOSFET gate or IC supply rail); voltage referenced to anode |
Key Features
| Feature | Design Value |
|---|---|
| Clamping ratio (VC/VBR) | 1.25–1.41 - Low overvoltage margin ensures robust protection margin for 8 V-rated circuits |
| Dynamic resistance | 0.056 Ω - Minimizes voltage overshoot during fast-rising transients (e.g., relay bounce) |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; supports standard SMT reflow without baking |
| Material compliance | Halogen-free, RoHS-compliant (M3 suffix), UL 94 V-0 molding compound - Meets environmental and safety mandates for industrial end equipment |
| Thermal resistance | RθJA = 120 °C/W - Enables operation up to +150 °C junction temperature with minimal derating on standard FR4 |
Applications
| Motor Drive Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Suppressing flyback voltage spikes from 24 V DC solenoid coils switched by N-channel MOSFETs in PLC output modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MOSFET drain and ground to clamp inductive kick above 8.0 V. Use Value: Limits drain voltage to ≤12.5 V during 48 A transients, preventing MOSFET avalanche failure and ensuring >100,000-cycle reliability. | Use Scenario: Protecting analog front-end inputs of 4–20 mA current-loop sensors exposed to ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: TVS connected across sensor signal and return lines to absorb 8/20 µs surges up to 4000 W. Use Value: Maintains signal integrity with <20 µA leakage at 8.0 V, enabling sub-10 µA measurement accuracy in precision current sensing. |
| Power Supply Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding input rectifier and bulk capacitor in 12 V wall-adapters subjected to lightning-induced surges on AC mains. IC Role / Device Role / Timing Role: Primary shunt protector on DC output side after bridge rectification, clamping transients before LDO regulator. Use Value: Withstands 600 W (10/1000 µs) pulses without degradation, extending adapter MTBF beyond 10 years in harsh environments. | Use Scenario: Front-end transient suppression on -48 V telecom power rails feeding digital signal processors in base station line cards. IC Role / Device Role / Timing Role: Unidirectional TVS tied between -48 V rail and chassis ground to clamp negative-going surges. Use Value: Operates reliably at -55 to +150 °C ambient, meeting GR-1089-CORE immunity requirements for NEBS Level 3 deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J8.0A-E3/61 | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free) | Acceptable where halogen-free mandate does not apply (e.g., non-EU consumer goods) | Select SMA6J8.0AHM3/61 when halogen-free compliance is required per IEC 61249-2-21 |
| SMB6J8.0A-M3/61 | Identical VWM/VBR/VC ratings but in larger SMB (DO-214AA) package; RθJA = 90 °C/W vs. 120 °C/W | Better thermal performance allows higher sustained surge duty cycles; requires larger PCB footprint | Choose SMB6J8.0A-M3/61 if board layout permits 20 % larger area and thermal derating is critical |
Compared with SMA6J8.0A-E3/61, SMA6J8.0AHM3/61 adds halogen-free assurance without sacrificing clamping or surge capability; versus SMB6J8.0A-M3/61, it trades thermal margin for space-constrained designs where 600 W peak power suffices.
Availability
SMA6J8.0AHM3/61 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power systems, sensor interface modules, and embedded power supplies requiring stable component supply with halogen-free compliance and MSL Level 1 handling.
Supply support for SMA6J8.0AHM3/61 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and industrial-grade qualification.
SMA6J8.0AHM3/61 belongs to Vishay's TRANSZORB® family of TVS diodes-engineered specifically for high-energy transient suppression in harsh-environment power electronics, with focus on automotive-qualified ruggedness and extended temperature operation.
FAQ
What is the maximum clamping voltage of the SMA6J8.0AHM3/61 at its rated peak pulse current?
The SMA6J8.0AHM3/61 has a maximum clamping voltage (VC) of 12.5 V at 48.0 A peak pulse current (IPP) under the 10/1000 µs waveform condition. This value is measured per the test conditions specified in the Vishay datasheet document 89460 and reflects worst-case voltage seen by protected circuitry during standardized surge events. The SMA6J8.0AHM3/61 maintains this clamping performance across its qualified operating temperature range.
Does the SMA6J8.0AHM3/61 meet lead-free soldering requirements?
Yes, the SMA6J8.0AHM3/61 features matte tin-plated leads that comply with J-STD-002 solderability standards and are rated for lead-free reflow profiles up to 260 °C peak temperature. Its M3 suffix confirms halogen-free, RoHS-compliant construction and qualification to JESD201 Class 2 for tin whisker resistance-making it suitable for modern high-reliability SMT assembly processes. The SMA6J8.0AHM3/61 is fully compatible with IPC-J-STD-020 moisture sensitivity Level 1 handling.
How does the breakdown voltage tolerance of SMA6J8.0AHM3/61 impact circuit design margin?
The SMA6J8.0AHM3/61 specifies a breakdown voltage (VBR) range of 8.89 V to 9.83 V at 10 mA, providing a ±5.5 % tolerance around the nominal 9.36 V typical value. This tight distribution ensures predictable turn-on behavior and allows designers to set upstream overvoltage thresholds with confidence-e.g., selecting a 10 V supervisor IC to avoid false triggering while maintaining ≥0.7 V headroom above VBR max. The SMA6J8.0AHM3/61's defined VBR window simplifies margin analysis for 8 V nominal systems.
Can SMA6J8.0AHM3/61 be used in bidirectional transient protection applications?
No, the SMA6J8.0AHM3/61 is a unidirectional TVS diode and is not rated for bidirectional surge suppression. Its electrical characteristics-including VBR, VC, and leakage-are specified only for forward-biased (anode-negative) transient conditions. For AC or dual-polarity signal lines, a dedicated bidirectional device such as SMA6J8.0CA or a back-to-back diode configuration is required. Using SMA6J8.0AHM3/61 in reverse-biased mode risks premature conduction or parametric shift. Always verify polarity alignment in schematic capture for SMA6J8.0AHM3/61.
What is the thermal resistance junction-to-ambient for SMA6J8.0AHM3/61, and how does it affect power derating?
The SMA6J8.0AHM3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on the minimum recommended 5.0 mm × 5.0 mm copper pads per terminal. This value directly determines power derating: at 50 °C ambient, its power dissipation must be limited to 4.0 W (per datasheet), and above 25 °C ambient, linear derating applies at 33.3 mW/°C. Designers must account for this RθJA in thermal simulations and layout-especially in enclosed enclosures or stacked PCBs-since exceeding thermal limits degrades clamping consistency. The SMA6J8.0AHM3/61's RθJA is validated per JEDEC test conditions.
SMA6J8.0AHM3/61 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 48A
- 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)
SMA6J8.0AHM3/61 FAQ
1.How can I place an order for SMA6J8.0AHM3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J8.0AHM3/61 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 SMA6J8.0AHM3/61 reliable?
The price and inventory of SMA6J8.0AHM3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J8.0AHM3/61 is usually 5 days.
3.What payment methods are accepted for SMA6J8.0AHM3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J8.0AHM3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J8.0AHM3/61?
SMA6J8.0AHM3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J8.0AHM3/61 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 SMA6J8.0AHM3/61?
For technical support, including SMA6J8.0AHM3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J8.0AHM3/61 requirements.
6.How does Aetrix verify that SMA6J8.0AHM3/61 is sourced from the original manufacturer or authorized distributors?
All SMA6J8.0AHM3/61 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 SMA6J8.0AHM3/61 meets industry standards.
7.What is the process for return or replacement of SMA6J8.0AHM3/61?
All SMA6J8.0AHM3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J8.0AHM3/61, 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 SMA6J8.0AHM3/61 part is unused and in its original packaging.
Return procedure for SMA6J8.0AHM3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J8.0AHM3/61 Tags
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