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Vishay General Semiconductor - Diodes Division SMA6J6.5AHM3/5A
- Part No.:
- SMA6J6.5AHM3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J6.5AHM3/5A.pdf
- Description:
- TVS DIODE 6.5VWM 10.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,823
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Product details
Overview
SMA6J6.5AHM3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 6.5 V stand-off voltage (VWM), 7.2–7.96 V breakdown voltage (VBR at IT = 10 mA), 10.2 V maximum clamping voltage at 58.8 A (10/1000 μs), 600 W peak pulse power (10/1000 μs), and operates from –55 °C to +150 °C. It protects MOSFETs and ICs in industrial power supplies.
For engineers reviewing the SMA6J6.5AHM3/5A datasheet, SMA6J6.5AHM3/5A pinout, SMA6J6.5AHM3/5A application, or SMA6J6.5AHM3/5A equivalent, key selection criteria include clamping voltage at rated IPP, unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), junction temperature derating above 25 °C, and compliance with J-STD-020 MSL level 1.
Technical Context
This TVS diode uses avalanche breakdown to clamp transient overvoltages before they damage downstream components. Its dynamic resistance (RD = 0.038 Ω) enables low-voltage overshoot during high-current surges up to 58.8 A (10/1000 μs) and 276 A (8/20 μs).
Designed for PCB-mounted protection, it requires 5.0 mm × 5.0 mm copper pads per terminal for rated power dissipation. The device is halogen-free, RoHS-compliant (M3 suffix), and qualified to JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before leakage exceeds 100 μA; sets minimum system operating margin. |
| VBR min/max | 7.2 V / 7.96 V at 10 mA - Confirmed breakdown threshold range; ensures predictable turn-on under surge conditions. |
| VC at IPP | 10.2 V at 58.8 A (10/1000 μs) - Clamping voltage seen by protected circuit during standard lightning-surge test waveform. |
| PPPM (10×1000 μs) | 600 W - Peak transient energy handling capacity under IEC 61000-4-5 long-duration surge profile. |
| IFSM | 50 A - Non-repetitive forward surge current rating; supports inrush tolerance during power-up events. |
| TJ max | +150 °C - Maximum junction temperature; defines thermal design headroom for PCB layout and ambient derating. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard pad layout; determines steady-state power limit at elevated TA. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity with cathode band marking. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected line's low-side reference (e.g., ground or negative rail) in unidirectional configuration. |
| Cathode | Clamped output / surge sink node | Connected to the line being protected (e.g., 5 V rail); conducts avalanche current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables automated placement and space-constrained board layouts; height ≤ 2.20 mm per package drawing. |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak without baking; simplifies SMT manufacturing flow. |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for industrial and telecom equipment without sacrificing surge robustness. |
| 150 °C junction rating | Supports operation in high-temperature environments such as enclosed power supplies or automotive under-hood zones. |
| 0.038 Ω dynamic resistance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin for sensitive ICs. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 5 V logic rails and gate drivers from load-dump and inductive switching transients in 24 V industrial SMPS. IC Role / Device Role: Unidirectional TVS placed between input rail and ground to clamp positive-going surges. Use Value: 10.2 V clamping at 58.8 A ensures downstream 5 V regulators and microcontrollers remain within absolute maximum ratings. |
Use Scenario: Safeguarding LIN bus transceivers and MCU I/O pins against ESD and battery reversal-induced spikes. IC Role / Device Role: Standoff-rated TVS on 12 V supply line feeding BCM sub-circuits. Use Value: 6.5 V VWM allows stable operation across cold-crank (6.5 V) while clamping >10 V transients before IC damage occurs. |
| Consumer Appliance Motor Drive | Telecom PoE Interface Protection |
Use Scenario: Suppressing back-EMF from brushed DC motors in washing machine control boards. IC Role / Device Role: TVS across motor terminals and H-bridge power FETs to absorb inductive kickback. Use Value: 600 W (10/1000 μs) rating handles repetitive commutation spikes without degradation over product lifetime. |
Use Scenario: Front-end protection on IEEE 802.3af/at Power over Ethernet data lines and power pairs. IC Role / Device Role: Unidirectional TVS on DC bias lines to suppress surges coupled from Ethernet cables. Use Value: Low dynamic resistance (0.038 Ω) limits clamping overshoot during fast 8/20 μs telecom surges up to 276 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J6.5A-E3/5A | RoHS-compliant but not halogen-free; same electrical specs and SMA package. | No difference in protection performance; differs only in material compliance (E3 vs. M3). | Select SMA6J6.5AHM3/5A when halogen-free requirement applies per IEC 61249-2-21 or customer sustainability policy. |
| SMCJ6.5A-M3 | Higher 1500 W PPPM (10/1000 μs); larger SMC (DO-214AB) package; RθJA = 35 °C/W. | Better surge handling but requires more PCB area and different thermal layout; not drop-in compatible. | Choose SMCJ6.5A-M3 only if 600 W is insufficient and board space allows SMC footprint. |
Compared with SMA6J6.5A-E3/5A, the HM3 variant adds halogen-free compliance without electrical trade-offs; versus SMCJ6.5A-M3, SMA6J6.5AHM3/5A offers identical surge response in a 40 % smaller footprint but with lower total energy rating and higher thermal resistance.
Availability
SMA6J6.5AHM3/5A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and consumer appliance motor drives requiring stable component supply and halogen-free compliance.
Supply support for SMA6J6.5AHM3/5A 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 SMA6J series is part of Vishay's Transient Voltage Suppressor portfolio, engineered for robust, cost-effective overvoltage protection in space-constrained, high-volume industrial and automotive systems.
FAQ
What is the clamping voltage of SMA6J6.5AHM3/5A at its rated peak pulse current?
The SMA6J6.5AHM3/5A has a maximum clamping voltage (VC) of 10.2 V at 58.8 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on the protected circuit during surge events. The SMA6J6.5AHM3/5A maintains this clamping performance across its specified operating temperature range when mounted per recommended pad layout.
Is SMA6J6.5AHM3/5A suitable for bidirectional transient protection?
No, SMA6J6.5AHM3/5A is unidirectional only, as confirmed in the Vishay datasheet under FEATURES and ELECTRICAL CHARACTERISTICS. It protects against positive-going transients on a line referenced to ground. For bidirectional protection, a separate device such as SMBJ6.5CA or a dual-diode array would be required. The SMA6J6.5AHM3/5A cathode band clearly indicates polarity and must be oriented correctly in-circuit.
What does the "HM3/5A" suffix indicate in SMA6J6.5AHM3/5A?
The "HM3" denotes halogen-free, RoHS-compliant, industrial-grade construction per Vishay's material categorization; "5A" specifies the packaging format: 13-inch diameter plastic tape and reel containing 7500 units. This differs from "61" (7-inch reel, 1800 units) and "E3" (RoHS-compliant but not halogen-free). The SMA6J6.5AHM3/5A meets JESD201 Class 2 whisker testing and J-STD-020 MSL Level 1.
How does thermal derating affect the power dissipation of SMA6J6.5AHM3/5A above 25 °C?
The SMA6J6.5AHM3/5A has a PD rating of 4.0 W at TA = 50 °C and derates linearly above 25 °C per Figure 2 in the datasheet. Its thermal resistance is RθJA = 120 °C/W on standard 5.0 mm × 5.0 mm pads. At 70 °C ambient, usable power drops to ~2.7 W; at 100 °C, it falls below 1 W. Continuous DC power dissipation must stay well below these limits to avoid exceeding TJ(max) = 150 °C.
Can SMA6J6.5AHM3/5A be used to protect USB or high-speed data lines?
No - SMA6J6.5AHM3/5A is not optimized for high-speed data line protection due to its relatively high junction capacitance (not specified in the datasheet for this variant, but typical for SMA6J series is >1000 pF at zero bias) and lack of low-capacitance design. It is intended for power rail and low-frequency signal protection. For USB 2.0/3.0 or other high-speed interfaces, dedicated low-capacitance TVS arrays like USBLC6-2SC6 are appropriate. The SMA6J6.5AHM3/5A remains suitable for 5 V supply rails feeding those interfaces.
SMA6J6.5AHM3/5A 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.2V
- Voltage - Clamping (Max) @ Ipp:
- 10.2V
- Current - Peak Pulse (10/1000µs):
- 58.8A
- 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)
SMA6J6.5AHM3/5A FAQ
1.How can I place an order for SMA6J6.5AHM3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J6.5AHM3/5A 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 SMA6J6.5AHM3/5A reliable?
The price and inventory of SMA6J6.5AHM3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J6.5AHM3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J6.5AHM3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J6.5AHM3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J6.5AHM3/5A?
SMA6J6.5AHM3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J6.5AHM3/5A 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 SMA6J6.5AHM3/5A?
For technical support, including SMA6J6.5AHM3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J6.5AHM3/5A requirements.
6.How does Aetrix verify that SMA6J6.5AHM3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J6.5AHM3/5A 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 SMA6J6.5AHM3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J6.5AHM3/5A?
All SMA6J6.5AHM3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J6.5AHM3/5A, 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 SMA6J6.5AHM3/5A part is unused and in its original packaging.
Return procedure for SMA6J6.5AHM3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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