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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Vishay General Semiconductor - Diodes Division SA64C-E3/73

Name: SA64C-E3/73
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA64C-E3/73
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA64C-E3/73

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: SA64C-E3/73.pdf

Description:: TVS DIODE 64VWM 114VC DO204AC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SA64C-E3/73 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features a 64 V stand-off voltage (V_WM), 71.1–78.6 V breakdown voltage (V_BR) at 1 mA, 500 W peak pulse power (10/1000 μs), 103 V maximum clamping voltage at 4.9 A, and AEC-Q101 qualification for automotive-grade reliability.

For engineers reviewing the SA64C-E3/73 datasheet, SA64C-E3/73 pinout, SA64C-E3/73 application, or SA64C-E3/73 equivalent, key selection criteria include bi-directional clamping capability, low clamping ratio (VC/VWM ≈ 1.61), DO-15 mechanical compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity standards in automotive and industrial interfaces.

Technical Context

The SA64C-E3/73 operates as a bi-directional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown threshold. Its glass-passivated junction ensures stable V_BR tolerance (±5 %) and low leakage (<1.0 μA at V_WM), while the 10/1000 μs waveform rating confirms suitability for lightning-induced surges and inductive switching events.

Thermal performance is defined by a 175 °C maximum junction temperature and 3.0 W steady-state power dissipation on infinite heatsink at T_L = 75 °C. The device exhibits no polarity marking - consistent with bi-directional construction - and meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 1A whisker resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	64 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin.
V_BR (min/max)	71.1 V / 78.6 V at 1 mA - Tight breakdown window ensures predictable turn-on across temperature and unit variation.
V_C @ I_PPM	103 V at 4.9 A - Clamping voltage under 500 W transient; limits downstream IC stress to <103 V during surge.
P_PPM	500 W (10/1000 μs) - Sustains high-energy transients common in automotive load-dump and industrial motor drive environments.
I_D @ V_WM	<1.0 μA - Negligible leakage current preserves signal integrity and battery life in always-on circuits.
T_J max	175 °C - Enables operation in under-hood automotive locations and high-ambient industrial enclosures.
AEC-Q101	Qualified - Validated for automotive electronics per stress test requirements including HTOL, TC, and ESD.

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0 flammability rating. Matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. No polarity marking - bi-directional symmetry confirmed.

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (symmetrical)	Bi-directional avalanche junction	Either lead serves as input/output; no orientation required during PCB placement.
Lead 1	Terminal	Matte tin-plated, 0.375" (9.5 mm) lead length standard; supports wave or hand soldering.
Lead 2	Terminal	Identical to Lead 1; enables bidirectional surge conduction without circuit redesign.

Key Features

Feature	Design Value
Glass-passivated chip junction	Ensures long-term V_BR stability and low parameter drift over 15+ year automotive service life.
500 W peak pulse power (10/1000 μs)	Protects CAN, LIN, and sensor interfaces against ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 3 surges.
AEC-Q101 qualification	Validates robustness for engine control units (ECUs), body controllers, and ADAS sensor modules.
Low incremental surge resistance	Minimizes voltage overshoot during fast-rising transients (e.g., ESD contact discharge per IEC 61000-4-2).
RoHS-compliant (E3 suffix)	Meets EU Directive 2011/65/EU; lead-free matte tin plating eliminates post-soldering whisker risk (JESD 201 Class 1A).

Applications

Automotive Sensor Protection	Industrial PLC I/O Protection
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional clamping element placed at connector interface to shunt transients before reaching precision ADC front-end. Use Value: Limits voltage excursion to ≤103 V during 500 W surges, preserving 16-bit ADC accuracy and preventing latch-up in microcontroller analog peripherals.	Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from inductive kickback of solenoid valves and relay coils. IC Role / Device Role / Timing Role: Primary transient suppressor mounted directly at terminal block entry point, upstream of optocoupler isolation stage. Use Value: Clamps 10/1000 μs surges to 103 V within nanoseconds, enabling reliable 3–30 ms response time of PLC input circuitry without false triggering.
Telecom Line Interface	Consumer Appliance Motor Control
Use Scenario: Safeguarding RS-485 transceivers in building automation gateways connected to long outdoor cabling susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: First-line protection device on differential bus lines, paired with common-mode chokes and GDTs for full IEC 61000-4-5 Level 4 compliance. Use Value: Maintains signal integrity below 103 V clamping level while surviving repeated 4 kV surges, extending transceiver MTBF beyond 10 years.	Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers where EMI must meet CISPR 14-1 Class B limits. IC Role / Device Role / Timing Role: Snubber-mounted across motor terminals to absorb energy from L·di/dt transients before radiating into control board traces. Use Value: Dissipates up to 500 W per pulse without degradation, reducing conducted emissions by >15 dB and eliminating microcontroller resets during spin cycles.

Automotive Sensor Protection

Industrial PLC I/O Protection

Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and alternator ripple.

IC Role / Device Role / Timing Role: Bi-directional clamping element placed at connector interface to shunt transients before reaching precision ADC front-end.

Use Value: Limits voltage excursion to ≤103 V during 500 W surges, preserving 16-bit ADC accuracy and preventing latch-up in microcontroller analog peripherals.

Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from inductive kickback of solenoid valves and relay coils.

IC Role / Device Role / Timing Role: Primary transient suppressor mounted directly at terminal block entry point, upstream of optocoupler isolation stage.

Use Value: Clamps 10/1000 μs surges to 103 V within nanoseconds, enabling reliable 3–30 ms response time of PLC input circuitry without false triggering.

Telecom Line Interface

Consumer Appliance Motor Control

Use Scenario: Safeguarding RS-485 transceivers in building automation gateways connected to long outdoor cabling susceptible to lightning-induced surges.

IC Role / Device Role / Timing Role: First-line protection device on differential bus lines, paired with common-mode chokes and GDTs for full IEC 61000-4-5 Level 4 compliance.

Use Value: Maintains signal integrity below 103 V clamping level while surviving repeated 4 kV surges, extending transceiver MTBF beyond 10 years.

Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers where EMI must meet CISPR 14-1 Class B limits.

IC Role / Device Role / Timing Role: Snubber-mounted across motor terminals to absorb energy from L·di/dt transients before radiating into control board traces.

Use Value: Dissipates up to 500 W per pulse without degradation, reducing conducted emissions by >15 dB and eliminating microcontroller resets during spin cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ64A-E3/5T	Uni-directional; 64 V V_WM, 71.1–78.6 V V_BR, same P_PPM but requires polarity-aware layout.	Requires cathode orientation check; unsuitable for AC-coupled or floating signal lines.	Select when protecting DC-biased lines with known polarity and space-constrained SMA package is preferred.
1.5KE68CA	Higher P_PPM (1500 W), larger DO-201AE package, looser V_BR tolerance (±10 %), no AEC-Q101 qualification.	Better for high-energy industrial surges but lacks automotive qualification and adds 3.5 mm height.	Choose only if system-level testing confirms need for >500 W clamping and AEC-Q101 is not mandated.

Compared with SMAJ64A-E3/5T and 1.5KE68CA, the SA64C-E3/73 uniquely delivers bi-directional clamping, AEC-Q101 validation, and DO-15 footprint in a single solution - critical for automotive sensor nodes and floating industrial buses where polarity independence and qualification traceability are non-negotiable.

Availability

SA64C-E3/73 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and telecom infrastructure requiring stable component supply with full RoHS and AEC-Q101 compliance documentation.

Supply support for SA64C-E3/73 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.

The SAxxC series targets robust transient protection in harsh environments, with design focus on AEC-Q101 compliance, tight parametric control, and proven field reliability in engine control and chassis systems.

FAQ

What is the clamping voltage of the SA64C-E3/73 under a 500 W transient?

The SA64C-E3/73 clamps to a maximum of 103 V at 4.9 A, corresponding to the 500 W peak pulse power rating with a 10/1000 μs waveform. This value is measured per Figure 7 in the Vishay datasheet 88378 and represents worst-case voltage seen by downstream circuitry during standardized surge events.

Is the SA64C-E3/73 suitable for automotive applications?

Yes, the SA64C-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use per Vishay's documentation. Its 175 °C maximum junction temperature, glass-passivated junction, and DO-15 mechanical robustness make it appropriate for engine control units, body electronics, and ADAS sensor interfaces.

Does the SA64C-E3/73 have polarity markings on the package?

No, the SA64C-E3/73 has no color band or marking because it is a bi-directional TVS diode. Both leads are functionally identical, allowing unrestricted orientation during PCB assembly - a key advantage over uni-directional alternatives like SA64A-E3/73.

What is the maximum leakage current of the SA64C-E3/73 at its stand-off voltage?

The SA64C-E3/73 exhibits a maximum reverse leakage current of 1.0 μA at 64 V (V_WM) and 25 °C, as specified in the Electrical Characteristics table of datasheet 88378. This low leakage preserves signal fidelity in high-impedance sensor interfaces and minimizes standby power loss.

Can the SA64C-E3/73 replace the SA64A-E3/73 in an existing design?

The SA64C-E3/73 can replace the SA64A-E3/73 only if the circuit is bi-directional or polarity-agnostic; the SA64A-E3/73 is uni-directional and requires correct cathode orientation. Layout changes are unnecessary, but functional validation of clamping behavior under both polarities is required before substitution.

SA64C-E3/73 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-204AC, DO-15, Axial

Series:: TransZorb®

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: -

Bidirectional Channels:: 1

Voltage - Reverse Standoff (Typ):: 64V

Voltage - Breakdown (Min):: 71.1V

Voltage - Clamping (Max) @ Ipp:: 114V

Current - Peak Pulse (10/1000µs):: 4.4A

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)

SA64C-E3/73 FAQ

1.How can I place an order for SA64C-E3/73 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA64C-E3/73 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 SA64C-E3/73 reliable?

The price and inventory of SA64C-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA64C-E3/73 is usually 5 days.

3.What payment methods are accepted for SA64C-E3/73?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA64C-E3/73 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA64C-E3/73?

SA64C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA64C-E3/73 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 SA64C-E3/73?

For technical support, including SA64C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA64C-E3/73 requirements.

6.How does Aetrix verify that SA64C-E3/73 is sourced from the original manufacturer or authorized distributors?

All SA64C-E3/73 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 SA64C-E3/73 meets industry standards.

7.What is the process for return or replacement of SA64C-E3/73?

All SA64C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA64C-E3/73, 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 SA64C-E3/73 part is unused and in its original packaging.

Return procedure for SA64C-E3/73:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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