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Vishay General Semiconductor - Diodes Division SMA5J6.5HE3/5A
- Part No.:
- SMA5J6.5HE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J6.5HE3/5A.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,148
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Product details
Overview
SMA5J6.5HE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR at 10 mA), 500 W peak pulse power (10/1000 µs), 44.6 A peak pulse current (IPPM), and clamps to ≤11.2 V at rated surge. Used in automotive ECUs and industrial sensor interfaces to protect MOSFETs and ICs from inductive switching transients.
For engineers reviewing the SMA5J6.5HE3/5A datasheet, SMA5J6.5HE3/5A pinout, SMA5J6.5HE3/5A application, or SMA5J6.5HE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering fast response (<1 ns) and low incremental surge resistance to clamp transient overvoltages before downstream components are damaged. Its unidirectional configuration enables integration into DC-biased circuits where reverse conduction must be blocked during normal operation.
The SMA5J6.5HE3/5A is rated for 500 W peak pulse power under standardized 10/1000 µs waveform conditions, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), supporting reliable operation up to 150 °C junction temperature in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; sets DC rail protection threshold. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - Confirmed breakdown range ensures predictable turn-on across production lot. |
| IPPM | 44.6 A - Peak surge current capability under 10/1000 µs waveform; defines maximum transient energy absorption. |
| VC | ≤11.2 V - Clamping voltage at IPPM; determines maximum stress imposed on protected IC or MOSFET. |
| PPPM | 500 W - Peak pulse power rating; used with derating curves to determine safe surge duty cycle at elevated ambient temperatures. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; informs minimum pad area and airflow requirements for sustained surge handling. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile case with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability and JESD 201 class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (during surge clamping) | Connected to protected circuit's ground or low-side return path; must be routed with low-inductance trace. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to line being protected (e.g., +12 V rail); blocks reverse leakage below VWM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without pre-baking; compatible with standard lead-free reflow profiles. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a). |
| 500 W peak pulse power | Supports robust protection against high-energy load dump and inductive kick events in 12 V systems. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting microcontroller power inputs in engine control units exposed to ISO 7637-2 load dump pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +12 V supply and chassis ground to clamp surges above 6.5 V. Use Value: Limits voltage seen by LDO regulators to ≤11.2 V during 400 ms, 35 V load dump events, preventing brownout or latch-up. | Use Scenario: Safeguarding analog front-end inputs of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point to shunt ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge transients. Use Value: Clamps sub-100 ns ESD spikes to <12 V within 1 ns, preserving ADC reference integrity and avoiding input stage damage. |
| DC Motor Drive Gate Protection | Telecom Power Supply Input Protection |
Use Scenario: Shielding N-channel MOSFET gate drivers from inductive flyback when controlling brushed DC motors. IC Role / Device Role / Timing Role: Unidirectional TVS connected between gate and source to absorb negative-going transients induced by rapid FET turn-off. Use Value: Prevents gate oxide breakdown by limiting negative excursion to ≤11.2 V, enabling use of 20 V-rated gate drivers. | Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding base station backplane logic. IC Role / Device Role / Timing Role: TVS installed upstream of DC/DC converters to handle lightning-induced surges per IEC 61000-4-5 (2 Ω/12 Ω coupling). Use Value: Absorbs 500 W peak energy without degradation, maintaining system uptime during outdoor cabinet surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J6.5A-E3/5A | Commercial-grade version; same electrical specs but not AEC-Q101 qualified. | Lacks automotive qualification; unsuitable for under-hood or safety-critical ECUs. | Select when cost-sensitive industrial or consumer designs do not require automotive reliability testing. |
| SMA6J6.5AHE3/5A | 600 W PPPM, higher IPPM (50.4 A), identical VWM/VBR/VC and package. | Higher surge margin for harsher environments (e.g., commercial vehicle alternator load dump). | Choose when design requires >500 W headroom while retaining footprint and layout compatibility. |
Compared with SMA5J6.5A-E3/5A, the SMA5J6.5HE3/5A adds AEC-Q101 qualification for automotive use; compared with SMA6J6.5AHE3/5A, it trades 100 W peak power for lower cost and tighter supply chain availability in standard 500 W applications.
Availability
SMA5J6.5HE3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supplies requiring stable component supply with AEC-Q101 compliance and RoHS-conforming packaging.
Supply support for SMA5J6.5HE3/5A 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, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series was engineered specifically for high-power-density transient suppression in space-constrained automotive and industrial applications, balancing clamping performance, thermal robustness, and AEC-Q101 compliance in the DO-214AC package.
FAQ
What is the polarity configuration of the SMA5J6.5HE3/5A?
The SMA5J6.5HE3/5A is a unidirectional transient voltage suppressor diode. Its cathode is marked with a band on the DO-214AC (SMA) package body, and it conducts only during reverse-biased overvoltage events. This configuration blocks reverse leakage below 6.5 V while clamping positive transients on the cathode side - a critical distinction from bi-directional variants like SMA5J6.5CA.
Does the SMA5J6.5HE3/5A meet automotive qualification standards?
Yes, the SMA5J6.5HE3/5A is AEC-Q101 qualified, as confirmed by Vishay's documentation and suffix "HE3". This certification covers stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for under-hood and safety-related automotive subsystems.
What is the maximum clamping voltage of the SMA5J6.5HE3/5A at rated surge current?
The SMA5J6.5HE3/5A clamps to a maximum of 11.2 V at its rated peak pulse current of 44.6 A (10/1000 µs waveform). This value is guaranteed across the full operating temperature range and ensures protected downstream components experience no more than 11.2 V during worst-case surge events.
How does the HE3 suffix differ from E3 in the SMA5J6.5HE3/5A part number?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 class 2 whisker resistance, whereas "E3" indicates RoHS compliance only (commercial grade). Both share identical electrical characteristics and DO-214AC packaging, but HE3 is required for automotive production and high-reliability industrial use.
Can the SMA5J6.5HE3/5A be used in place of SMA5J6.5A-E3/5A without layout changes?
Yes, the SMA5J6.5HE3/5A is a direct footprint replacement for SMA5J6.5A-E3/5A - same DO-214AC (SMA) package, identical pinout, and matching mechanical dimensions. The only functional difference is AEC-Q101 qualification; all electrical parameters (VWM, VBR, VC, PPPM) are identical, enabling drop-in qualification upgrade.
SMA5J6.5HE3/5A 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):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 40.7A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J6.5HE3/5A FAQ
1.How can I place an order for SMA5J6.5HE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J6.5HE3/5A 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 SMA5J6.5HE3/5A reliable?
The price and inventory of SMA5J6.5HE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J6.5HE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J6.5HE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J6.5HE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J6.5HE3/5A?
SMA5J6.5HE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J6.5HE3/5A 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 SMA5J6.5HE3/5A?
For technical support, including SMA5J6.5HE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J6.5HE3/5A requirements.
6.How does Aetrix verify that SMA5J6.5HE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J6.5HE3/5A 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 SMA5J6.5HE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J6.5HE3/5A?
All SMA5J6.5HE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J6.5HE3/5A, 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 SMA5J6.5HE3/5A part is unused and in its original packaging.
Return procedure for SMA5J6.5HE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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