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Vishay General Semiconductor - Diodes Division SA6.5HE3/54
- Part No.:
- SA6.5HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA6.5HE3/54.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,761
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Product details
Overview
SA6.5HE3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features 500 W peak pulse power (10/1000 μs), 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR at 10 mA), 44.7 A peak pulse current (IPPM), and clamps to ≤11.2 V at rated surge - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SA6.5HE3/54 datasheet, SA6.5HE3/54 pinout, SA6.5HE3/54 application, or SA6.5HE3/54 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, DO-15 mechanical data, clamping behavior under transient stress, and direct alternatives for ESD/surge co-design in 12 V automotive subsystems.
Technical Context
The SA6.5HE3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transients and low incremental surge resistance. Its uni-directional polarity uses a cathode band marking and supports reverse-biased clamping only - forward conduction is limited to 3.5 V at 100 A per specification.
Rated for -55 °C to +175 °C junction temperature, it sustains 3.0 W steady-state power on infinite heatsink at 75 °C lead temperature and meets JESD 201 Class 2 whisker resistance. The device is AEC-Q101 qualified and RoHS-compliant (HE3 suffix), with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins; sets threshold for 12 V rail protection. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - ensures reliable avalanche initiation within tight tolerance for predictable clamping onset. |
| IPPM | 44.7 A (10/1000 μs) - peak surge current handling capacity defining protection level against ISO 7637-2 Pulse 1/2a/5a. |
| VC | ≤11.2 V at IPPM - clamped voltage limits stress on downstream ICs like CAN transceivers or microcontrollers. |
| PPPM | 500 W - peak pulse power rating confirming suitability for repetitive surge events at 0.01 % duty cycle. |
| TJ max. | +175 °C - high-temperature capability enables placement near heat sources in engine control modules. |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Cathode indicated by color band on one end; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path); defines clamping polarity in uni-directional configuration. |
| Cathode | Avalanche conduction terminal / clamping output | Marked with band; connected to protected line (e.g., 12 V supply); conducts during overvoltage to shunt energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling. |
| 500 W peak pulse power (10/1000 μs) | Supports robust protection against load dump and inductive switching transients in automotive 12 V systems. |
| AEC-Q101 qualification | Validates performance across automotive temperature range (-40 °C to +125 °C ambient) and lifetime stress tests. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during surge, reducing risk of latch-up or damage to protected ICs. |
| Matte tin-plated leads | Ensures solderability and intermetallic compatibility with standard Pb-free reflow profiles per J-STD-002. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V power input of BCM from load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between fused 12 V rail and LDO input, responding within <1 ns to suppress >100 V transients. Use Value: Limits voltage seen by downstream PMIC to ≤11.2 V, preventing brownout or overvoltage shutdown during engine cranking events. |
Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end TVS in series with current-limiting resistor, absorbing 1 kV/500 A surge per IEC 61000-4-5 Level 3. Use Value: Maintains input logic integrity by clamping transients before they reach optocoupler or Schmitt trigger inputs. |
| Automotive HVAC Blower Motor Driver | Telecom Power Supply Input Stage |
Use Scenario: Safeguarding MOSFET gate drivers and sense resistors in brushed DC motor control circuits exposed to inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals and driver supply pins, conducting during flyback voltage spikes. Use Value: Prevents gate oxide rupture and current-sense amplifier saturation by limiting transient voltage to <12 V. |
Use Scenario: Secondary-level surge suppression on 48 V telecom rectifier outputs feeding base station backplane. IC Role / Device Role / Timing Role: Standby clamping device in redundant power path, activated only during lightning-induced overvoltage events. Use Value: Enables compliance with GR-1089-CORE Section 4.5.2.2 by holding output voltage below 60 V during 10/1000 μs 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 |
|---|---|---|---|
| SMAJ6.5A-E3/54 | Same VWM (6.5 V), identical DO-214AC package, but lower PPPM (400 W) and higher VC (11.5 V). | Less margin for high-energy transients; suitable where space constraints favor SMD over axial DO-15. | Select SMAJ6.5A-E3/54 only when board layout requires surface-mount and surge energy is limited to ≤400 W. |
| 1.5KE6.8A | Higher VWM (6.8 V), same DO-201AD package, 1500 W PPPM, but no AEC-Q101 qualification. | Not qualified for automotive use; better suited for industrial AC/DC front-end protection where qualification is not required. | Choose 1.5KE6.8A for cost-sensitive non-automotive designs needing higher surge headroom without qualification overhead. |
Compared with SMAJ6.5A-E3/54 and 1.5KE6.8A, SA6.5HE3/54 uniquely combines AEC-Q101 qualification, DO-15 axial form factor, and 500 W clamping performance - making it the preferred choice for production automotive electronics requiring traceable, qualified surge protection.
Availability
SA6.5HE3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and telecom power supply protection requiring stable component supply and full AEC-Q101 compliance.
Supply support for SA6.5HE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of SA6.5HE3/54 at its rated peak pulse current?
The SA6.5HE3/54 clamps to a maximum of 11.2 V when subjected to its rated 44.7 A peak pulse current (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88378, page 2) and defines the upper voltage limit imposed on protected circuitry during surge events. The SA6.5HE3/54 maintains this clamping performance across its qualified temperature range.
Is SA6.5HE3/54 suitable for automotive applications?
Yes, SA6.5HE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine bay and chassis-mounted modules. Its -55 °C to +175 °C junction temperature range, glass-passivated junction, and validation against temperature cycling, HTRB, and ESD ensure reliability in automotive environments. The HE3 suffix confirms AEC-Q101 compliance, distinguishing it from commercial-grade E3 variants.
What does the "HE3" suffix mean in SA6.5HE3/54?
The "HE3" suffix in SA6.5HE3/54 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. "H" denotes AEC-Q101 qualification, "E3" specifies matte tin plating meeting JESD 201 Class 1A/2 requirements and RoHS compliance. This distinguishes SA6.5HE3/54 from SA6.5A-E3/54, which is commercial grade only.
Can SA6.5HE3/54 be used in bi-directional protection circuits?
No, SA6.5HE3/54 is a uni-directional TVS diode and must not be used for bi-directional protection. Its cathode band marking and specified parameters (e.g., forward voltage, IFSM) apply only to reverse-biased clamping. For bi-directional applications, Vishay specifies CA-suffix parts such as SA6.5CA; using SA6.5HE3/54 in such configurations risks failure due to forward conduction during negative transients.
What is the maximum steady-state power dissipation for SA6.5HE3/54?
The SA6.5HE3/54 has a maximum steady-state power dissipation (PD) of 3.0 W when mounted on an infinite heatsink at a lead temperature (TL) of 75 °C, as defined in the Vishay datasheet (page 1, Maximum Ratings table). This rating decreases linearly above 75 °C per the derating curve in Figure 5, reaching zero at 175 °C junction temperature.
SA6.5HE3/54 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:
- 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 ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA6.5HE3/54 FAQ
1.How can I place an order for SA6.5HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA6.5HE3/54 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 SA6.5HE3/54 reliable?
The price and inventory of SA6.5HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA6.5HE3/54 is usually 5 days.
3.What payment methods are accepted for SA6.5HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA6.5HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA6.5HE3/54?
SA6.5HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA6.5HE3/54 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 SA6.5HE3/54?
For technical support, including SA6.5HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA6.5HE3/54 requirements.
6.How does Aetrix verify that SA6.5HE3/54 is sourced from the original manufacturer or authorized distributors?
All SA6.5HE3/54 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 SA6.5HE3/54 meets industry standards.
7.What is the process for return or replacement of SA6.5HE3/54?
All SA6.5HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA6.5HE3/54, 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 SA6.5HE3/54 part is unused and in its original packaging.
Return procedure for SA6.5HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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