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Vishay General Semiconductor - Diodes Division SA64HE3/54
- Part No.:
- SA64HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA64HE3/54.pdf
- Description:
- TVS DIODE 64VWM 114VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,837
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Product details
Overview
SA64HE3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on power and signal lines. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), 5.7 A peak pulse current (IPPM), and clamps to ≤103 V at rated surge - used in automotive ECUs and industrial power supplies for IEC 61000-4-5 surge protection.
For engineers reviewing the SA64HE3/54 datasheet, SA64HE3/54 pinout, SA64HE3/54 application, or SA64HE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-15 mechanical data, clamping performance under 10/1000 μs surges, and real-world use cases in 12 V/24 V automotive systems and industrial DC rails.
Technical Context
The SA64HE3/54 operates as a uni-directional avalanche diode with glass-passivated junction, optimized for fast response (<1 ps) to transient overvoltages. Its 64 V stand-off rating enables reliable blocking during normal 12 V/24 V system operation while triggering at ≥71.1 V to clamp damaging surges.
It delivers 500 W peak pulse power per 10/1000 μs waveform at TA = 25 °C, with thermal derating above 25 °C per Fig. 2 and maximum junction temperature of 175 °C. The device meets AEC-Q101 stress testing requirements and supports soldering per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins; ensures stable blocking in 24 V automotive systems. |
| VBR (min/max) | 71.1 V / 78.6 V at IT = 1 mA - Confirmed avalanche breakdown range; defines precise turn-on threshold for predictable clamping. |
| IPPM | 5.7 A - Peak surge current it safely shunts under 10/1000 μs waveform; determines minimum series impedance required for compliance. |
| VC | ≤103 V at IPPM - Clamped voltage seen by protected circuit; must be below IC/MOSFET absolute maximum ratings. |
| PPPM | 500 W - Surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 3 (1 kV/2 kV) protection. |
| TJ max | 175 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in uni-directional configuration. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); color band identifies this end for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, low-leakage avalanche behavior over lifetime and temperature; critical for long-term reliability in harsh environments. |
| 500 W peak pulse power (10/1000 μs) | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without degradation. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, body electronics, and ADAS power domains. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving clamping fidelity. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - required for automotive production traceability. |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Uni-directional TVS placed between 24 V rail and chassis ground to clamp positive-going surges up to 100 V. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤103 V, preventing latch-up or permanent damage. |
Use Scenario: Safeguarding programmable logic controller (PLC) 24 V DC inputs exposed to field wiring surges and relay coil kickback. IC Role / Device Role / Timing Role: Primary clamping device on DIN-rail mounted power entry module, coordinated with upstream fuses. Use Value: Absorbs 500 W surge energy without failure, maintaining system uptime and eliminating need for redundant protection stages. |
| Telecom Line Interface | Motor Drive Control Signal |
Use Scenario: Shielding RS-485 transceiver power pins in outdoor base station equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), clamping residual transients to safe levels. Use Value: Responds in <1 ps to limit transient duration, preserving signal integrity and preventing transceiver latch-up. |
Use Scenario: Protecting gate drive signals feeding IGBTs in HVAC inverter modules from cross-talk and switching noise spikes. IC Role / Device Role / Timing Role: Localized TVS on isolated gate driver supply rail (e.g., +15 V bias) to suppress dV/dt-induced coupling. Use Value: Clamps to ≤103 V within nanoseconds, avoiding false triggering or desaturation faults in high-side drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/52 (Vishay) | Same VWM (64 V), but SMA package (surface-mount); lower IPPM (5.3 A) and PPPM (400 W). | Designed for space-constrained PCB layouts; lacks AEC-Q101 qualification in standard grade. | Select when board area is limited and automotive qualification is not required. |
| 1.5KE68A (ON Semiconductor) | Higher VWM (68 V), same DO-15 package; VC = 112 V at IPPM, lower clamping ratio. | Used in legacy industrial designs; no AEC-Q101 qualification; higher clamping voltage reduces margin for 5 V logic interfaces. | Choose only if existing BOM uses 1.5KE series and VC margin permits. |
Compared with SMAJ64A-E3/52 and 1.5KE68A, the SA64HE3/54 provides superior automotive-grade reliability (AEC-Q101), tighter VBR tolerance (71.1–78.6 V), and lower clamping voltage (≤103 V), making it optimal for new 24 V ECU and ADAS power designs where surge margin and qualification are mandatory.
Availability
SA64HE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom infrastructure requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SA64HE3/54 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 qualification.
The SA64HE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom power systems where robustness and AEC-Q101 validation are essential.
FAQ
What is the clamping voltage of the SA64HE3/54 under maximum surge conditions?
The SA64HE3/54 clamps to a maximum of 103 V when subjected to its rated 5.7 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 7 in the official Vishay datasheet 88378 and represents the upper limit of voltage imposed on the protected circuit during worst-case transient events. Designers must ensure downstream components have sufficient voltage margin above this clamping level.
Is the SA64HE3/54 suitable for automotive applications?
Yes, the SA64HE3/54 is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 18-Sep-12 (Document Number: 88378), footnote (1) on page 3. Its construction - including glass-passivated junction, DO-204AC package, and JESD 201 Class 2 whisker resistance - meets automotive reliability requirements for under-hood and body electronics. The HE3 suffix denotes this qualification.
What does the "HE3/54" suffix mean in SA64HE3/54?
In SA64HE3/54, "HE3" indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "/54" specifies the preferred packaging code - 4000-piece 13-inch paper tape and reel. This ordering format aligns with Vishay's standard delivery method for high-volume automotive production, ensuring consistent traceability and handling.
How does the SA64HE3/54 differ from bi-directional variants like SA64CA?
The SA64HE3/54 is uni-directional, meaning it conducts only in forward bias and clamps positive transients on a line referenced to ground. In contrast, SA64CA is bi-directional and protects against both positive and negative surges - e.g., on AC-coupled or floating signal lines. The SA64HE3/54 has a cathode band for polarity identification; SA64CA has no marking. Their VBR and VC values differ slightly due to internal structure.
Can the SA64HE3/54 replace the older SA64A-E3 in a design?
Yes - SA64HE3/54 is a direct functional and mechanical replacement for SA64A-E3, sharing identical DO-204AC package, VWM (64 V), VBR (71.1–78.6 V), and electrical specs. The key upgrade is AEC-Q101 qualification (denoted by HE3 vs. E3), making SA64HE3/54 suitable for automotive applications where the base E3 version is not certified. No PCB changes are needed.
SA64HE3/54 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:
- -
- 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)
SA64HE3/54 FAQ
1.How can I place an order for SA64HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA64HE3/54 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 SA64HE3/54 reliable?
The price and inventory of SA64HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA64HE3/54 is usually 5 days.
3.What payment methods are accepted for SA64HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA64HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA64HE3/54?
SA64HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA64HE3/54 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 SA64HE3/54?
For technical support, including SA64HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA64HE3/54 requirements.
6.How does Aetrix verify that SA64HE3/54 is sourced from the original manufacturer or authorized distributors?
All SA64HE3/54 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 SA64HE3/54 meets industry standards.
7.What is the process for return or replacement of SA64HE3/54?
All SA64HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA64HE3/54, 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 SA64HE3/54 part is unused and in its original packaging.
Return procedure for SA64HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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