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Vishay General Semiconductor - Diodes Division SA6.5-E3/54
- Part No.:
- SA6.5-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA6.5-E3/54.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,258
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Product details
Overview
SA6.5-E3/54 from Vishay General Semiconductor is a unidirectional 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 a 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) under 10/1000 µs waveform, 500 W peak pulse power (PPPM), and clamps to ≤11.2 V at rated surge current - deployed in automotive body control modules and industrial sensor interfaces.
For engineers reviewing the SA6.5-E3/54 datasheet, SA6.5-E3/54 pinout, SA6.5-E3/54 application, or SA6.5-E3/54 equivalent, this page delivers verified electrical parameters, polarity marking guidance, AEC-Q101 qualification status, thermal derating behavior, and direct alternatives for ESD/surge protection design-in across consumer, industrial, and automotive systems.
Technical Context
This TVS diode operates as a voltage-clamping device in series with sensitive downstream circuitry, activating when reverse voltage exceeds VWM = 6.5 V and entering avalanche conduction at VBR = 7.22–7.98 V. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
It sustains 500 W non-repetitive surge pulses (10/1000 µs), exhibits 11.2 V clamping voltage (VC) at IPPM, and maintains operation from −55 °C to +175 °C junction temperature. The matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before significant leakage; sets protection threshold for 5 V rail systems. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - Confirmed avalanche onset range; ensures reliable triggering without premature conduction. |
| VC @ IPPM | ≤11.2 V at 44.7 A - Clamped voltage during worst-case surge; guarantees downstream ICs see <12 V stress. |
| PPPM | 500 W - Peak transient energy handling per 10/1000 µs pulse; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) compliance. |
| IPPM | 44.7 A - Maximum surge current it safely diverts; defines minimum trace width and PCB layout margin. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
| Leakage ID | ≤1 µA at 6.5 V - Ultra-low reverse leakage preserves battery life in always-on circuits. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Polarity marked with cathode band on one end; cathode connects to printed-circuit board trace requiring negative potential during surge events.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest system potential; completes conduction path during reverse surge. |
| Cathode | Protected line input | Connected to line being protected (e.g., 5 V supply); carries full surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress. |
| AEC-Q101 qualified (E3 suffix) | Validated for automotive applications including engine control units and infotainment power supplies. |
| 500 W peak pulse power (10/1000 µs) | Supports robust protection against load dump and inductive switching transients in 12 V systems. |
| RoHS-compliant, matte tin plating | Enables lead-free reflow assembly and meets J-STD-002 solderability requirements. |
| −55 °C to +175 °C operating range | Allows deployment in extreme environments such as industrial motor drives and automotive under-hood ECUs. |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump spikes and ESD events in door module electronics. IC Role / Device Role: Primary clamping element placed between LIN line and ground, absorbing >95 % of surge energy before reaching IC. Use Value: Limits voltage seen by transceiver to ≤11.2 V during 44.7 A surge, preventing latch-up and permanent damage per ISO 16750-2. |
Use Scenario: Safeguarding analog output lines (4–20 mA) of pressure sensors exposed to field wiring transients in factory automation. IC Role / Device Role: Bidirectional-capable variant not used; SA6.5-E3/54 serves as unidirectional clamp on supply rail feeding sensor signal conditioning circuitry. Use Value: Maintains <1 µA leakage at 6.5 V, avoiding offset errors in precision current-loop receivers. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side overvoltage suppression on 5 V USB charging outputs subjected to hot-plug and cable discharge events. IC Role / Device Role: Standoff-rated TVS placed directly across output capacitor terminals to clamp fast-rising transients. Use Value: Responds in <1 ns to clamp 10/1000 µs surges to ≤11.2 V, preserving USB PD controller integrity. |
Use Scenario: Front-end protection for Ethernet PHY power rails (3.3 V) against lightning-induced surges coupled via magnetics. IC Role / Device Role: Unidirectional clamp on VDD_IO rail, coordinated with upstream common-mode chokes and GDTs. Use Value: Withstands 500 W pulses without degradation, enabling compliance with GR-1089-CORE Level 3 surge immunity. |
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 | Same VWM (6.5 V), identical DO-214AC package, but lower PPPM = 400 W and higher VC = 11.1 V. | Less robust for high-energy surges; suitable only where IEC 61000-4-5 Level 2 (0.5 kV) suffices. | Select SMAJ6.5A only if space-constrained SMD layout prohibits axial DO-15 placement and surge energy is limited. |
| 1.5KE6.8A | Higher VWM = 6.8 V, larger DO-201AD package, PPPM = 1500 W, VC = 10.5 V at 143 A. | Over-specified for 5 V rail protection; introduces unnecessary cost and board area unless >1 kV surge immunity required. | Choose 1.5KE6.8A only when legacy designs mandate DO-201AD footprint or require >1 kW surge handling. |
Compared with SMAJ6.5A and 1.5KE6.8A, SA6.5-E3/54 delivers optimal balance of 500 W surge capacity, precise 6.5 V standoff, and AEC-Q101 qualification in the compact DO-15 form factor - making it the preferred choice for new automotive and industrial designs where reliability, size, and standardization matter.
Availability
SA6.5-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer power adapters, and telecom line card protection requiring stable component supply and long-term lifecycle support.
Supply support for SA6.5-E3/54 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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SAxxA series is engineered for robust transient suppression in DC power and signal lines, targeting applications demanding AEC-Q101 compliance, high surge tolerance, and stable parametric performance across temperature.
FAQ
What is the maximum clamping voltage of SA6.5-E3/54 at its rated peak pulse current?
The SA6.5-E3/54 clamps to a maximum of 11.2 V at its rated peak pulse current of 44.7 A under the standardized 10/1000 µs waveform. This value is measured per Figure 7 in Vishay document 88378 and defines the upper voltage limit imposed on protected circuitry during surge events. Designers must ensure downstream components tolerate ≤11.2 V transient exposure.
Is SA6.5-E3/54 qualified for automotive applications?
Yes, SA6.5-E3/54 is AEC-Q101 qualified, as confirmed by the "HE3" variant designation in Vishay's ordering table and footnote (1) on page 3 of document 88378. The E3 suffix indicates RoHS-compliant commercial grade, while HE3 denotes AEC-Q101 qualification - both share identical electrical specs, but only HE3 is certified for automotive use. SA6.5-E3/54 itself is not AEC-Q101 qualified; however, the SA6.5AHE3/54 variant is.
What does the "E3/54" suffix mean in SA6.5-E3/54?
The "E3" suffix denotes RoHS-compliant, commercial-grade packaging with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 1A whisker resistance. The "/54" indicates the preferred package code for 13-inch paper tape and reel delivery, with a base quantity of 4000 units per reel. This ordering format is standardized across Vishay's SAxxA series.
Can SA6.5-E3/54 be used for bidirectional transient protection?
No, SA6.5-E3/54 is a unidirectional TVS diode, identifiable by the "A" suffix (vs. "CA" for bidirectional). It conducts only in reverse bias above VBR; forward conduction follows standard diode behavior with ~3.5 V drop at 100 A. For bidirectional protection (e.g., AC lines or data buses), SA6.5CA or equivalent CA-suffix parts must be selected instead.
What is the thermal derating behavior of SA6.5-E3/54 above 25 °C ambient?
SA6.5-E3/54 follows Vishay's standard derating curve (Figure 2 in document 88378): peak pulse power remains at 100 % up to TJ = 25 °C, then linearly decreases to ~50 % at TJ = 125 °C, and reaches zero at TJ = 175 °C. Designers must calculate junction temperature rise using RθJA (not specified in datasheet) or apply conservative layout rules like 10 mm² copper pour per lead to sustain full 500 W rating.
SA6.5-E3/54 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA6.5-E3/54 FAQ
1.How can I place an order for SA6.5-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA6.5-E3/54 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 SA6.5-E3/54 reliable?
The price and inventory of SA6.5-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA6.5-E3/54 is usually 5 days.
3.What payment methods are accepted for SA6.5-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA6.5-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA6.5-E3/54?
SA6.5-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA6.5-E3/54 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 SA6.5-E3/54?
For technical support, including SA6.5-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA6.5-E3/54 requirements.
6.How does Aetrix verify that SA6.5-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA6.5-E3/54 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 SA6.5-E3/54 meets industry standards.
7.What is the process for return or replacement of SA6.5-E3/54?
All SA6.5-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA6.5-E3/54, 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 SA6.5-E3/54 part is unused and in its original packaging.
Return procedure for SA6.5-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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