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Vishay General Semiconductor - Diodes Division SA6.5AHE3/54
- Part No.:
- SA6.5AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA6.5AHE3/54.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,828
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Product details
Overview
SA6.5AHE3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor diode in DO-15 package, designed for clamping voltage transients on power and signal lines. It features 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 44.7 V clamping voltage (VC) at 400 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used in automotive ECUs and industrial sensor interfaces to protect MOSFETs and microcontrollers.
For engineers reviewing the SA6.5AHE3/54 datasheet, SA6.5AHE3/54 pinout, SA6.5AHE3/54 application, or SA6.5AHE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C max junction temperature, DO-15 mechanical compatibility, and verified clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
The SA6.5AHE3/54 operates as a silicon avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking and delivers 3.5 V forward voltage (VF) at 100 A surge, supporting robust protection against inductive switching spikes and ESD events.
It is rated for 70 A non-repetitive forward surge current (IFSM) and dissipates 3.0 W continuously on an infinite heatsink at TL = 75 °C. Thermal derating follows a linear curve above 25 °C ambient, maintaining operation across -55 °C to +175 °C junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse voltage before clamping begins; sets operating margin for 5 V rail protection |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - defines precise avalanche onset window for predictable turn-on behavior |
| VC @ IPPM | 44.7 V at 400 A - clamping voltage during 10/1000 μs surge; limits stress on downstream ICs |
| PPPM | 500 W - peak transient energy handling capacity; meets IEC 61000-4-5 Level 4 immunity requirements |
| TJ max | +175 °C - enables use in under-hood automotive environments without thermal derating penalties |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test standard, including HTGB, HTRB, and TCT |
| Package | DO-15 (DO-204AC) - industry-standard axial leaded package with 0.130" diameter body and 1.0" minimum lead length |
Pinout & Package
DO-15 (DO-204AC) molded epoxy package with matte tin-plated leads; cathode indicated by color band on one end. Leads conform to J-STD-002 and JESD 22-B102 solderability standards. HE3 suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to protected line side (e.g., 5 V supply rail); conducts during positive transients when cathode is grounded |
| Cathode | Clamping reference node | Typically tied to ground or low-impedance return path; establishes clamping threshold relative to reference plane |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable avalanche characteristics over lifetime and temperature, reducing parameter drift in harsh environments |
| 500 W peak pulse power (10/1000 μs) | Supports high-energy surge suppression without degradation in industrial motor drive and automotive load-dump scenarios |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and high-temperature reverse bias |
| Low clamping ratio (VC/VBR ≈ 5.6) | Minimizes voltage overshoot during transients, improving margin for 3.3 V and 5 V logic-level devices |
| Solderable per J-STD-002 | Ensures robust through-hole assembly with wave or hand soldering up to 275 °C for 10 s |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load-dump and jump-start surges in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VCC and GND, acting as crowbar clamp during >20 V transients. Use Value: Limits clamped voltage to 44.7 V at 400 A, preserving integrity of 5 V tolerant MCU pins and enabling compliance with ISO 7637-2 Pulse 5a. | Use Scenario: Shields 24 V DC digital input circuitry from inductive kickback generated by solenoid and relay coils. IC Role / Device Role / Timing Role: Standoff device in series with optocoupler input, conducting only during overvoltage events to shunt energy to ground. Use Value: Withstands 70 A single-pulse surge (IFSM), preventing latch-up or destruction of upstream current-limiting resistors and isolation components. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Front-End |
Use Scenario: Guards gate driver ICs and bootstrap capacitors in BLDC inverter stages against shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response clamping element across high-side FET source-to-drain, activated within <1 ns of overvoltage detection. Use Value: Delivers 44.7 V clamping at 400 A, keeping gate-source voltage below absolute maximum rating of 20 V SiC MOSFETs. | Use Scenario: Suppresses lightning-induced surges on AC/DC adapter primary-side rectifier output before bulk capacitor. IC Role / Device Role / Timing Role: Secondary-stage transient suppressor after bridge rectifier, absorbing residual energy not handled by MOV-based front-end. Use Value: Provides repeatable 500 W pulse handling with <5 % parameter shift after 1000 surges, extending PSU MTBF in outdoor telecom cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6.5AHE3/A | Same electrical specs but SMA (DO-214AC) surface-mount package; 0.075" x 0.110" footprint vs. DO-15 axial leads | Used where board space is constrained and reflow assembly is preferred; lacks axial mechanical strain relief | Select SMA6.5AHE3/A for automated SMT lines; SA6.5AHE3/54 remains optimal for through-hole prototyping and high-vibration environments |
| P6KE6.8A | Higher VBR (6.45–7.13 V), same VWM (6.8 V), identical PPPM (500 W), but not AEC-Q101 qualified and higher VC (47.3 V at 43.5 A) | Targeted at commercial-grade power supplies; unsuitable for automotive due to missing qualification and lower surge current rating | Choose P6KE6.8A only for cost-sensitive non-automotive designs; SA6.5AHE3/54 provides superior reliability and surge margin in mission-critical systems |
Compared with SMA6.5AHE3/A and P6KE6.8A, the SA6.5AHE3/54 uniquely combines AEC-Q101 qualification, DO-15 mechanical robustness, and lowest clamping voltage (44.7 V) in its VWM class - making it the preferred choice for automotive and industrial applications demanding proven field reliability and thermal resilience.
Availability
SA6.5AHE3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input protection, and telecom power supply surge hardening requiring stable component supply and long-term lifecycle support.
Supply support for SA6.5AHE3/54 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, efficiency, and application-specific validation.
The SAxxA series is part of Vishay's TransZORB® TVS platform engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - prioritizing low clamping, fast response, and AEC-Q101 compliance from wafer to final test.
FAQ
What is the clamping voltage of SA6.5AHE3/54 at its rated peak pulse current?
The SA6.5AHE3/54 has a maximum clamping voltage (VC) of 44.7 V at 400 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized surge conditions and ensures downstream components like microcontrollers and interface ICs remain within safe operating voltage limits during transient events. The SA6.5AHE3/54 maintains this clamping performance across its full operating temperature range.
Is SA6.5AHE3/54 suitable for automotive applications?
Yes, the SA6.5AHE3/54 is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor modules. Its DO-15 package supports mechanical stability under vibration, and its 175 °C maximum junction temperature accommodates under-hood thermal environments. The SA6.5AHE3/54 meets ISO 7637-2 Pulse 1, 2a, 3a/b, and 5a requirements when properly implemented in circuit layout.
What does the "HE3" suffix indicate in SA6.5AHE3/54?
The "HE3" suffix in SA6.5AHE3/54 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" versions and confirms compliance with automotive reliability standards including high-temperature reverse bias, temperature cycling, and humidity testing. The SA6.5AHE3/54 HE3 marking is laser-etched on the DO-15 body per Vishay's traceability protocol.
How does SA6.5AHE3/54 compare to bidirectional TVS diodes like SA6.5CA?
The SA6.5AHE3/54 is unidirectional and features a cathode band for polarity identification, while SA6.5CA is bidirectional with no polarity marking and symmetrical clamping in both directions. SA6.5AHE3/54 offers lower forward voltage (3.5 V at 100 A) and higher IFSM (70 A), making it ideal for DC rail protection where polarity is fixed. SA6.5CA suits AC-coupled or differential signal lines but cannot replace SA6.5AHE3/54 without circuit redesign.
What is the maximum steady-state power dissipation for SA6.5AHE3/54?
The SA6.5AHE3/54 has a maximum steady-state power dissipation (PD) of 3.0 W when mounted on an infinite heatsink at lead temperature (TL) of 75 °C. Derating is required above 25 °C ambient per Figure 5 in the datasheet, reaching zero dissipation at approximately 175 °C case temperature. This PD rating supports continuous operation in thermally managed industrial enclosures but is not intended for sustained overvoltage conduction.
SA6.5AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 44.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA6.5AHE3/54 FAQ
1.How can I place an order for SA6.5AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA6.5AHE3/54 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 SA6.5AHE3/54 reliable?
The price and inventory of SA6.5AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA6.5AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA6.5AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA6.5AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA6.5AHE3/54?
SA6.5AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA6.5AHE3/54 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 SA6.5AHE3/54?
For technical support, including SA6.5AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA6.5AHE3/54 requirements.
6.How does Aetrix verify that SA6.5AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA6.5AHE3/54 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 SA6.5AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA6.5AHE3/54?
All SA6.5AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA6.5AHE3/54, 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 SA6.5AHE3/54 part is unused and in its original packaging.
Return procedure for SA6.5AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA6.5AHE3/54 Tags
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