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Vishay General Semiconductor - Diodes Division SMA6J8.5AHM3/61
- Part No.:
- SMA6J8.5AHM3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J8.5AHM3/61.pdf
- Description:
- TVS DIODE 8.5VWM 13.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA6J8.5AHM3/61 from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in SMA (DO-214AC) package, with 8.5 V stand-off voltage (VWM), 9.4–10.4 V breakdown voltage (VBR at IT = 1 mA), and 13.3 V maximum clamping voltage (VC) at 45.1 A peak pulse current (IPP) under 10/1000 μs waveform. It delivers 600 W peak pulse power and is rated for 150 °C junction temperature, used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients.
For engineers reviewing the SMA6J8.5AHM3/61 datasheet, SMA6J8.5AHM3/61 pinout, SMA6J8.5AHM3/61 application, or SMA6J8.5AHM3/61 equivalent, key selection criteria include clamping performance at 45.1 A IPP, unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), and compliance with J-STD-020 MSL level 1 and JESD 201 class 2 whisker testing.
Technical Context
This device operates as a silicon avalanche diode designed for fast-response overvoltage clamping in DC power rails and low-speed signal paths. Its dynamic resistance (RD = 0.064 Ω) and low leakage current (ID ≤ 20 μA at VWM) ensure minimal standby power loss and precise voltage thresholding during surge events.
The SMA6J8.5AHM3/61 is characterized for operation across -55 °C to +150 °C junction temperature range, with thermal derating above TA = 25 °C per Fig. 2. It uses matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and its halogen-free, RoHS-compliant molding compound meets UL 94 V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC bias margin for protected circuitry. |
| VBR (min/max) | 9.4 V / 10.4 V at IT = 1 mA - Tight breakdown tolerance ensures predictable turn-on across production lots and temperature. |
| VC at IPP | 13.3 V at 45.1 A (10/1000 μs) - Clamping voltage directly limits stress on downstream components during surge events. |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capacity under standard lightning-surge test waveform. |
| ID at VWM | ≤ 20 μA - Ultra-low leakage preserves signal integrity and minimizes quiescent power loss in battery-powered systems. |
| RθJA | 120 °C/W - Thermal resistance determines required PCB copper area (5.0 mm × 5.0 mm pads per terminal) for thermal management. |
| Polarity | Unidirectional - Cathode marked by band; blocks reverse current until breakdown, suitable for DC rail protection only. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode identified by color band. Complies with J-STD-020 MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or clamping | Connected to lower-potential side of protected line (e.g., ground or return path); enables clamping when cathode-side voltage exceeds VBR. |
| Cathode | Current exit terminal during clamping; marked by band | Connected to higher-potential side (e.g., VCC or signal line); avalanche conduction initiates here when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | M3 suffix confirms compliance with environmental regulations and JESD 201 class 2 whisker resistance for long-term reliability. |
| MSL level 1 moisture sensitivity | Enables standard SMT reflow without baking; supports automated placement without preconditioning delays. |
| Low dynamic resistance (RD = 0.064 Ω) | Minimizes voltage overshoot during fast-rising transients, improving clamping precision for sensitive 3.3 V/5 V logic interfaces. |
| 150 °C maximum junction temperature | Supports operation in high-ambient environments such as industrial motor drives and automotive under-hood modules. |
| UL 94 V-0 flammability rating | Ensures flame-retardant behavior in fault conditions, meeting safety requirements for consumer and telecom end equipment. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins from inductive kickback generated by relay and solenoid switching. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across DC supply rails and low-speed signal lines to clamp transients below 13.3 V. Use Value: Prevents latch-up and permanent damage to 8-bit MCUs and logic-level MOSFET drivers exposed to >100 V spikes. |
Use Scenario: Shielding LIN bus transceivers and sensor inputs (e.g., ambient temperature, door position) from load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated clamping device on 12 V power domain and bidirectional signal lines with series impedance matching. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 1/2a/5a events while drawing <20 μA leakage at nominal 12 V system voltage. |
| Consumer Power Adapters | Telecom Base Station Power Supplies |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for USB-C PD and smart home hubs. IC Role / Device Role / Timing Role: Fast-clamping TVS on 5 V/9 V/12 V output rails to absorb flyback transformer ringing and ESD coupling. Use Value: Limits transient overshoot to ≤13.3 V within 1 ns response time, preventing brownout resets in PMICs and USB controllers. |
Use Scenario: Input-stage protection for distributed 48 V DC-DC converters feeding RF amplifiers and backhaul radios. IC Role / Device Role / Timing Role: Primary transient suppressor on 48 V input bus, coordinated with upstream MOVs and fuse timing. Use Value: Handles 600 W peak pulses without degradation, enabling robust front-end design compliant with IEC 61000-4-5 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J8.0AHM3/61 | Lower VWM (8.0 V) and VBR (8.89–9.83 V); clamps at 12.5 V @ 48.0 A | Better suited for tighter 8 V rail margins; slightly higher IPP but lower VC | Select when protecting 8 V logic rails where 0.5 V additional standoff headroom is critical. |
| SMA6J10AHM3/61 | Higher VWM (10 V) and VBR (11.1–12.3 V); clamps at 15.7 V @ 38.2 A | Reduced clamping margin but improved immunity to nuisance tripping on noisy 12 V supplies | Prefer for 12 V automotive or industrial rails where transient amplitude exceeds 13.3 V but must avoid false triggering. |
Compared with SMA6J8.0AHM3/61 and SMA6J10AHM3/61, the SMA6J8.5AHM3/61 offers optimal balance between standoff margin and clamping voltage for 9 V nominal systems-such as USB PD sink circuits and 3.3 V/5 V LDO outputs-where 8.5 V VWM avoids leakage-induced dropout while maintaining sub-13.5 V clamping under 45 A surge.
Availability
SMA6J8.5AHM3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, consumer power adapters, and telecom base station power supplies requiring stable component supply and long-term lifecycle support.
Supply support for SMA6J8.5AHM3/61 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 transient protection devices with emphasis on reliability, thermal performance, and AEC-Q200 qualification.
The SMA6J series is part of Vishay's TransZORB® TVS platform, engineered specifically for robust, low-inductance overvoltage protection in space-constrained surface-mount applications across automotive, industrial, and computing markets.
FAQ
What is the maximum clamping voltage of the SMA6J8.5AHM3/61 under standard surge conditions?
The SMA6J8.5AHM3/61 has a maximum clamping voltage (VC) of 13.3 V when subjected to a 10/1000 μs waveform at 45.1 A peak pulse current (IPP). This value is measured per JEDEC standards and confirmed in the Vishay datasheet revision 09-Jan-2024, Document Number 89460. The clamping performance remains stable across -55 °C to +125 °C ambient temperatures.
Does the SMA6J8.5AHM3/61 meet automotive reliability standards?
The SMA6J8.5AHM3/61 is not AEC-Q200 qualified, but it is industrial-grade and halogen-free (M3 suffix), with JESD 201 class 2 whisker resistance and MSL level 1 reflow compatibility. For automotive use, it may serve in non-safety-critical subsystems like infotainment power rails-however, formal AEC-Q200 validation requires separate qualification testing beyond the device's base specifications.
How does the M3 suffix affect the SMA6J8.5AHM3/61's material composition and compliance?
The M3 suffix on SMA6J8.5AHM3/61 indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that pass JESD 201 class 2 whisker testing. It also meets UL 94 V-0 flammability requirements and complies with Vishay's material categorization standard (Document 99912), distinguishing it from E3-suffix variants which are RoHS-compliant but not halogen-free.
Can the SMA6J8.5AHM3/61 be used in bidirectional signal line protection?
No-the SMA6J8.5AHM3/61 is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts only when cathode voltage exceeds anode voltage by ≥VBR. For bidirectional protection (e.g., RS-485, USB D+/D−), a symmetric TVS array or dedicated bidirectional device such as SMBJ8.5CA must be selected instead.
What PCB layout guidance applies to the SMA6J8.5AHM3/61 for optimal thermal performance?
Vishay specifies a minimum 5.0 mm × 5.0 mm copper pad for each terminal of the SMA6J8.5AHM3/61 to achieve rated power dissipation. This layout reduces RθJA from 120 °C/W toward the typical 25 °C/W junction-to-lead value. Avoid narrow traces or thermal isolation; connect pads directly to internal ground/power planes using multiple vias for sustained 4 W dissipation at TA = 50 °C.
SMA6J8.5AHM3/61 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):
- 8.5V
- Voltage - Breakdown (Min):
- 9.4V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 45.1A
- 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)
SMA6J8.5AHM3/61 FAQ
1.How can I place an order for SMA6J8.5AHM3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J8.5AHM3/61 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 SMA6J8.5AHM3/61 reliable?
The price and inventory of SMA6J8.5AHM3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J8.5AHM3/61 is usually 5 days.
3.What payment methods are accepted for SMA6J8.5AHM3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J8.5AHM3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J8.5AHM3/61?
SMA6J8.5AHM3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J8.5AHM3/61 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 SMA6J8.5AHM3/61?
For technical support, including SMA6J8.5AHM3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J8.5AHM3/61 requirements.
6.How does Aetrix verify that SMA6J8.5AHM3/61 is sourced from the original manufacturer or authorized distributors?
All SMA6J8.5AHM3/61 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 SMA6J8.5AHM3/61 meets industry standards.
7.What is the process for return or replacement of SMA6J8.5AHM3/61?
All SMA6J8.5AHM3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J8.5AHM3/61, 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 SMA6J8.5AHM3/61 part is unused and in its original packaging.
Return procedure for SMA6J8.5AHM3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J8.5AHM3/61 Tags
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