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Vishay General Semiconductor - Diodes Division SA64-E3/54
- Part No.:
- SA64-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA64-E3/54.pdf
- Description:
- TVS DIODE 64VWM 114VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,361
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Product details
Overview
SA64-E3/54 from Vishay General Semiconductor is a uni-directional TransZORB® transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features 500 W peak pulse power (10/1000 µs), 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR at 1 mA), 5.7 A peak pulse current (IPPM), and clamps to ≤103 V at rated surge - used in industrial motor drives, automotive body control modules, and DC power input protection.
For engineers reviewing the SA64-E3/54 datasheet, SA64-E3/54 pinout, SA64-E3/54 application, or SA64-E3/54 equivalent, this page delivers verified electrical parameters, polarity marking guidance, thermal derating behavior, AEC-Q101 qualification status, and direct alternatives for overvoltage protection design validation.
Technical Context
This TVS diode operates as a voltage-clamping device in uni-directional configuration, with cathode marked by a color band. Its silicon junction is glass passivated for stability under repetitive surge stress and meets JESD 22-B106 solderability requirements (275 °C, 10 s).
It delivers 500 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, derates linearly above 25 °C per Fig. 2, and supports 70 A non-repetitive forward surge (IFSM, 10 ms half-sine). Clamping voltage rises incrementally with IPPM, confirmed in Fig. 7–8.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail (e.g., 72 V nominal battery systems) |
| VBR (min/max) | 71.1 V / 78.6 V at IT = 1 mA - defines guaranteed breakdown threshold; ensures predictable turn-on during overvoltage events |
| IPPM | 5.7 A at 10/1000 µs - peak surge current it safely shunts without failure; determines minimum series impedance needed for coordination |
| VC | ≤103 V at IPPM - maximum clamped voltage seen by protected circuit; must stay below IC absolute maximum ratings |
| PPPM | 500 W - peak pulse power handling capability; validates suitability for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge testing |
| TJ max | +175 °C - maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with 0.300" (7.6 mm) minimum lead length; compatible with wave and selective soldering |
Pinout & Package
SA64-E3/54 uses a two-terminal DO-204AC (DO-15) axial package. The cathode is identified by a color band on the body; anode is unmarked. Leads are matte tin-plated and compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential node in uni-directional clamp configuration; determines current path during surge conduction |
| Cathode | Reverse-biased terminal / high-side connection | Marked with color band; connected to protected line (e.g., +12 V rail); conducts when line voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable leakage and breakdown characteristics across temperature and long-term operation; prevents moisture-induced degradation |
| 500 W peak pulse power (10/1000 µs) | Validates robustness against common industrial and automotive surge waveforms including ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 combination wave |
| AEC-Q101 qualified (E3 suffix variant) | Confirms reliability for automotive applications including engine control units, lighting modules, and infotainment power supplies |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., relay coil flyback), improving protection margin for downstream ICs |
| RoHS-compliant, JESD 201 Class 1A whisker tested | Supports lead-free assembly and long-term reliability in high-vibration environments without tin whisker risk |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple. IC Role / Device Role / Timing Role: Uni-directional clamping diode placed between power rail and chassis ground. Use Value: Limits transient voltage to ≤103 V during 100 V/500 ms load dump events, preventing damage to LDOs and microcontrollers in SA64-E3/54-equipped modules. |
Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact input lines before optocoupler or Schmitt trigger. Use Value: Responds in <1 ps to 1 kV/500 A transients (per IEC 61000-4-5), maintaining signal integrity while diverting >95 % of surge energy away from SA64-E3/54-protected interface ICs. |
| DC Motor Drive Flyback Suppression | Telecom Power Supply Inrush Clamping |
Use Scenario: Snubbing inductive kickback from brushed DC motors in HVAC actuators and valve drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to absorb stored inductive energy. Use Value: Clamps flyback spikes to ≤103 V within nanoseconds, eliminating arcing at relay contacts and extending MOSFET lifetime in SA64-E3/54-integrated H-bridge designs. |
Use Scenario: Limiting inrush and lightning-induced surges on -48 V telecom rectifier outputs feeding base station backplanes. IC Role / Device Role / Timing Role: Secondary-stage clamping device after bulk MOVs, providing precise voltage limiting near IC thresholds. Use Value: Delivers tight 64 V VWM holdoff and 103 V clamping ceiling, enabling use of lower-voltage-rated DC-DC converters downstream of SA64-E3/54-protected rails. |
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 | Same VWM (64 V), SMC package (smaller footprint, higher thermal resistance), 400 W PPPM | Preferred where board space is constrained but thermal management allows lower power rating | Select SMAJ64A if layout requires surface-mount and system surge levels are ≤400 W; verify PCB copper area for thermal dissipation. |
| 1.5KE68A | Higher VWM (68 V), DO-201 package, same 500 W rating, slower response due to larger junction capacitance | Better suited for AC line protection or less time-critical DC bus clamping | Choose 1.5KE68A only when VWM margin permits 68 V holdoff and sub-nanosecond response is not required for sensitive ICs near SA64-E3/54 location. |
Compared with SMAJ64A and 1.5KE68A, SA64-E3/54 offers optimal balance of axial-leaded manufacturability, 500 W surge capacity, and 64 V precision holdoff - making it preferred for automotive and industrial through-hole assemblies where reliability under thermal cycling and mechanical vibration is critical.
Availability
SA64-E3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and telecom power supply designs requiring stable component supply, AEC-Q101 qualification, and RoHS compliance.
Supply support for SA64-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 passive components with emphasis on reliability, power handling, and automotive-grade qualification.
The SAxx series is part of Vishay's TransZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be mitigated without compromising long-term stability.
FAQ
What is the polarity configuration of SA64-E3/54?
SA64-E3/54 is a uni-directional transient voltage suppressor diode. Its cathode is marked by a visible color band on the DO-204AC package body; the unmarked end is the anode. This configuration allows it to conduct only when the cathode is at a higher potential than the anode - essential for proper clamping on positive power rails. The SA64-E3/54 must be oriented correctly in-circuit to avoid open-circuit failure during surge events.
Does SA64-E3/54 meet AEC-Q101 requirements?
Yes, SA64-E3/54 is AEC-Q101 qualified, as confirmed in the Vishay document 88378 (Revision: 18-Sep-12), footnote (1) on page 3. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for automotive under-hood and cabin applications. The "E3" suffix denotes RoHS-compliant commercial grade with AEC-Q101 qualification.
What is the maximum clamping voltage of SA64-E3/54 at rated surge current?
The maximum clamping voltage (VC) of SA64-E3/54 is 103 V at its rated peak pulse current (IPPM) of 5.7 A, measured using the standard 10/1000 µs waveform. This value is specified in the Electrical Characteristics table on page 2 of the Vishay datasheet 88378. Designers must ensure that all downstream components in the protected circuit have absolute maximum voltage ratings exceeding 103 V to guarantee survivability during worst-case transients handled by SA64-E3/54.
Can SA64-E3/54 replace SA64A in existing designs?
Yes, SA64-E3/54 is a direct replacement for SA64A, sharing identical electrical specifications (VWM = 64 V, VBR = 71.1–78.6 V, VC = 103 V, PPPM = 500 W) and DO-204AC packaging. The "E3/54" suffix indicates RoHS-compliant matte tin plating, JESD 201 Class 1A whisker testing, and packaging in 13" paper tape and reel (4000 pcs). No layout or schematic changes are needed when migrating from SA64A to SA64-E3/54.
What is the thermal derating behavior of SA64-E3/54 above 25 °C?
SA64-E3/54 follows the pulse derating curve in Figure 2 of datasheet 88378: peak pulse power (PPPM) decreases linearly from 100 % at 25 °C to 0 % at 175 °C. At 100 °C ambient, PPPM is derated to approximately 50 %. This behavior directly impacts surge survivability in high-temperature enclosures; designers must either reduce expected surge magnitude or add heatsinking to leads to maintain effective clamping performance for SA64-E3/54 in thermally demanding applications.
SA64-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):
- 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)
SA64-E3/54 FAQ
1.How can I place an order for SA64-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA64-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 SA64-E3/54 reliable?
The price and inventory of SA64-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 SA64-E3/54 is usually 5 days.
3.What payment methods are accepted for SA64-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA64-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA64-E3/54?
SA64-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA64-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 SA64-E3/54?
For technical support, including SA64-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA64-E3/54 requirements.
6.How does Aetrix verify that SA64-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA64-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 SA64-E3/54 meets industry standards.
7.What is the process for return or replacement of SA64-E3/54?
All SA64-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA64-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 SA64-E3/54 part is unused and in its original packaging.
Return procedure for SA64-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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