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Vishay General Semiconductor - Diodes Division SA64A-E3/54
- Part No.:
- SA64A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA64A-E3/54.pdf
- Description:
- TVS DIODE 64VWM 103VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,970
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Product details
Overview
SA64A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and surge transients. It features 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 103 V clamping voltage (VC) at 4.9 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and I/O lines of industrial sensor interfaces and automotive control modules.
For engineers reviewing the SA64A-E3/54 datasheet, SA64A-E3/54 pinout, SA64A-E3/54 application, or SA64A-E3/54 equivalent, key selection criteria include verified clamping performance at rated IPPM, DO-15 mechanical compatibility, AEC-Q101 qualification status, thermal derating above 25 °C, and unidirectional polarity marking for correct PCB orientation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (>1 MΩ leakage at 64 V), then rapidly avalanches below 78.6 V to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance (<1 Ω typical).
Designed for repetitive surge events up to 0.01 % duty cycle, SA64A-E3/54 sustains 500 W peak pulse power only when limited to ≤4 pulses per minute (per 8.3 ms half-sine test condition); steady-state dissipation is capped at 3.0 W on infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 71.1 V / 78.6 V at 1 mA - guaranteed avalanche onset range defining protection threshold accuracy |
| VC @ IPPM | 103 V at 4.9 A - clamped voltage seen by protected circuit during full-rated 10/1000 μs surge |
| PPPM | 500 W - peak transient power handling capability under standardized 10/1000 μs waveform |
| ID @ VWM | 1.0 μA - reverse leakage current at rated stand-off voltage, critical for low-power sensor rail integrity |
| TJ max | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| IFSM | 70 A - non-repetitive forward surge rating, relevant for inadvertent reverse-connection fault scenarios |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards. Polarity marked by cathode band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND) in unidirectional configuration; must be oriented correctly to avoid open-circuit failure during surge |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 64 V rail); color band identifies this end for PCB placement verification |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in industrial enclosures |
| 500 W peak pulse power (10/1000 μs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without external series impedance |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive powertrain and body electronics applications requiring zero defect reliability across temperature cycling and vibration stress |
| Low clamping ratio (VC/VBR ≈ 1.30) | Minimizes overvoltage stress on downstream MOSFET gates or MCU I/O pins during transient events |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for enclosed industrial control cabinets and medical device housings |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12 V supply rail and LIN bus lines from load dump and inductive switching spikes in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed directly at connector entry point to limit transient voltage before reaching MCU and transceiver ICs. Use Value: Clamps 10/1000 μs surges to ≤103 V while maintaining <1 μA leakage at 64 V - preserving sleep-mode current budget and preventing false wake-up events. | Use Scenario: Safeguarding 24 V DC digital input channels from field-wiring induced transients in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on optocoupler input side, coordinated with series current-limiting resistor to set precise trip threshold. Use Value: Enables reliable operation under repeated 500 W surges per IEC 61000-4-5 without parameter shift - validated via 1000-cycle life testing at TJ = 125 °C. |
| Telecom Power Supply Front-End | Medical Sensor Interface Board |
Use Scenario: Secondary protection on +48 V telecom rectifier output against lightning-induced surges entering via long cable runs. IC Role / Device Role / Timing Role: Standby clamping element paralleled with primary MOV, activated only after MOV clamping voltage exceeds 103 V. Use Value: Adds precision clamping layer with tight VBR tolerance (±5 %) to reduce overshoot margin required in downstream DC-DC converter design. | Use Scenario: ESD protection on analog front-end signal lines (e.g., thermistor, RTD inputs) in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional TVS placed adjacent to connector to suppress HBM ±8 kV discharges without distorting mV-level sensor signals. Use Value: Maintains <1 μA leakage at 64 V - critical for high-impedance sensor bias networks where leakage would introduce offset error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/57 | Same VWM (64 V) and PPPM (400 W), but SMA package (smaller footprint, lower thermal mass) | Preferred for space-constrained PCBs; derates faster above 75 °C due to smaller copper pad area | Select when board area is constrained and peak surge duty is <2 pulses/minute |
| 1.5KE68A | Higher VWM (68 V), same DO-15 package, 1500 W PPPM but larger 1.5 kW package size | Used where higher surge margin is needed but DO-15 mounting must be retained | Choose when system-level testing requires >500 W headroom and layout cannot accommodate SMC/SMB variants |
Compared with SMAJ64A-E3/57 and 1.5KE68A, SA64A-E3/54 offers optimal balance of DO-15 mechanical compatibility, AEC-Q101 qualification, and 500 W surge capacity - making it preferred for automotive and industrial designs requiring proven reliability in legacy through-hole layouts.
Availability
SA64A-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and telecom power front-end designs requiring stable component supply with RoHS-compliant, AEC-Q101-qualified TVS diodes.
Supply support for SA64A-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, efficiency, and automotive-grade qualification.
The SAxxA series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for robust, cost-effective overvoltage protection in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of SA64A-E3/54 at its rated peak pulse current?
The SA64A-E3/54 has a maximum clamping voltage (VC) of 103 V at its rated peak pulse current (IPPM) of 4.9 A under the standard 10/1000 μs waveform. This value is measured per Figure 7 in the Vishay datasheet 88378 and defines the upper voltage limit imposed on protected circuits during worst-case surge events. The SA64A-E3/54 maintains this clamping performance across its full operating temperature range of -55 °C to +175 °C.
Is SA64A-E3/54 qualified for automotive applications?
Yes, the SA64A-E3/54 is AEC-Q101 qualified per Note (1) on page 3 of the Vishay datasheet 88378. This qualification confirms its suitability for automotive electronic systems including body control modules and infotainment power supplies. The E3 suffix indicates RoHS compliance and commercial grade, while HE3 denotes AEC-Q101 qualification - both share identical electrical specs, but SA64A-E3/54 is the commercial variant commonly stocked for dual-use industrial and automotive prototyping.
What is the reverse leakage current specification for SA64A-E3/54 at its stand-off voltage?
The SA64A-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM) of 64 V and TA = 25 °C. This low leakage is critical for battery-powered or low-power sensor applications where standby current must remain minimal. Leakage increases with temperature and voltage stress, but remains below 10 μA up to 80 % of VWM across the full -55 °C to +125 °C operating range per datasheet curves.
Does SA64A-E3/54 have polarity marking, and how is it identified?
Yes, SA64A-E3/54 is a unidirectional TVS diode with polarity clearly marked: a single color band (typically black or dark gray) denotes the cathode terminal. Per the "MECHANICAL DATA" section, this band identifies the end connected to the protected line (e.g., 64 V rail), while the unmarked end is the anode, tied to ground or lower potential. Correct orientation is essential - reverse installation renders the device non-functional for surge suppression.
What is the package type and lead finish of SA64A-E3/54?
The SA64A-E3/54 uses the DO-15 (DO-204AC) axial package with matte tin-plated leads that meet J-STD-002 and JESD 22-B102 solderability standards. The E3 suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance. Lead diameter is 0.028–0.034 inch (0.71–0.86 mm), and overall body dimensions are 0.130–0.138 inch diameter × ≥1.0 inch length (3.3–3.5 mm × ≥25.4 mm), per package outline drawing on page 5.
SA64A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 4.9A
- 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)
SA64A-E3/54 FAQ
1.How can I place an order for SA64A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA64A-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 SA64A-E3/54 reliable?
The price and inventory of SA64A-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 SA64A-E3/54 is usually 5 days.
3.What payment methods are accepted for SA64A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA64A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA64A-E3/54?
SA64A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA64A-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 SA64A-E3/54?
For technical support, including SA64A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA64A-E3/54 requirements.
6.How does Aetrix verify that SA64A-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA64A-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 SA64A-E3/54 meets industry standards.
7.What is the process for return or replacement of SA64A-E3/54?
All SA64A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA64A-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 SA64A-E3/54 part is unused and in its original packaging.
Return procedure for SA64A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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