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Vishay General Semiconductor - Diodes Division SA64AHE3/54
- Part No.:
- SA64AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA64AHE3/54.pdf
- Description:
- TVS DIODE 64VWM 103VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,363
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Product details
Overview
SA64AHE3/54 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, 500 W peak pulse power (10/1000 µs), clamping voltage of 103 V at 4.9 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA64AHE3/54 datasheet, SA64AHE3/54 pinout, SA64AHE3/54 application, or SA64AHE3/54 equivalent, key selection criteria include its unidirectional polarity, DO-15 mechanical form factor, 175 °C max junction temperature, low incremental clamping resistance, and compliance with JESD22-B102 solderability and JESD201 Class 2 whisker testing.
Technical Context
The SA64AHE3/54 operates as a voltage-clamping device that remains high-impedance below 64 V and rapidly transitions to low-impedance conduction above its 71.1–78.6 V breakdown threshold. Its glass-passivated junction enables fast response (<1 ns) to transient events such as ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
Designed for unidirectional DC line protection, it supports peak pulse currents up to 4.9 A under 10/1000 µs waveform, with 3.0 W steady-state power dissipation on infinite heatsink and 70 A non-repetitive forward surge capability - enabling robust protection of downstream ICs, MOSFETs, and sensor interfaces without latch-up or thermal runaway.
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 - precise breakdown threshold ensures reliable triggering margin over VWM |
| VC @ IPPM | 103 V at 4.9 A - clamping voltage defines worst-case stress on protected circuit during surge |
| PPPM | 500 W (10/1000 µs) - surge energy handling capacity for industrial and automotive transients |
| TJ max | +175 °C - extended thermal range supports under-hood automotive and high-ambient industrial deployment |
| IFSM | 70 A (8.3 ms half-sine) - withstands inrush and fault currents without bond-wire fusing |
| Leakage ID | 1.0 µA at 64 V - negligible standby power loss and signal integrity impact in always-on circuits |
Pinout & Package
SA64AHE3/54 is housed in a DO-15 (DO-204AC) axial-leaded package with matte tin-plated leads. Polarity is marked by a cathode band on the body; the banded end is the cathode (K), and the unmarked end is the anode (A). The package meets UL 94 V-0 flammability rating and supports manual or wave soldering per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry / Surge return path | Connected to ground or low-impedance return in unidirectional clamp configuration |
| Cathode (K) | Reverse-biased terminal / Clamping node | Connected to protected line (e.g., 64 V supply rail); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Glass passivated junction | Enables sub-nanosecond response time and stable VBR over lifetime and temperature |
| 500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in 2 Ω source impedance systems |
| JESD201 Class 2 whisker resistance | Ensures long-term reliability in high-humidity, high-temperature environments without tin whisker growth |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage overshoot during surge, reducing risk to sensitive 64 V-rated components |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 64 V battery-fed ECUs and lighting modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 64 V supply and ground to clamp surges exceeding 71.1 V. Use Value: Prevents damage to microcontrollers and CAN transceivers during ISO 16750-2 load-dump events up to 120 V/100 ms. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Clamp diode on 4–20 mA loop or 0–10 V analog output to suppress inductive switching spikes. Use Value: Maintains signal fidelity and prevents ADC saturation or op-amp latch-up during relay coil de-energization. |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-rail to absorb positive-going transients on negative-ground systems. Use Value: Limits voltage excursion to ≤103 V during 10/1000 µs surges, preserving isolation barriers and DC/DC controller ICs. | Use Scenario: Shielding high-side gate drivers in 60–80 V BLDC motor inverters from shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: TVS across gate-source terminals or bootstrap supply rails to clamp Miller-induced overshoot. Use Value: Prevents false turn-on and gate oxide breakdown by limiting transient peaks to <103 V during 100 ns–1 µs events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA64AHE3/A | Same electrical specs but in SMA (DO-214AC) surface-mount package; 1.5 mm lower height, no axial leads | Preferred for automated SMT assembly; unsuitable for through-hole or high-vibration mechanical retention | Select SMA64AHE3/A when board space is constrained and reflow compatibility is required. |
| 1.5KE64A | Higher 1500 W PPPM rating, same VWM/VBR, but larger DO-201AD package and higher clamping voltage (104 V) | Better suited for high-energy utility meter or solar inverter inputs; less optimal for space-constrained automotive modules | Choose 1.5KE64A only if surge energy exceeds 500 W and PCB layout allows larger footprint. |
Compared with SMA64AHE3/A and 1.5KE64A, the SA64AHE3/54 offers optimal balance of AEC-Q101 qualification, DO-15 mechanical robustness, and precise 103 V clamping - making it the preferred choice for automotive and industrial through-hole designs requiring proven reliability and standardized tape-and-reel delivery (54 mm pitch, 4000 pcs/reel).
Availability
SA64AHE3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC input safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SA64AHE3/54 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, AEC-Q qualification, and application-specific performance.
The SA64AHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure where precise clamping, low leakage, and long-term stability are critical.
FAQ
What is the meaning of the 'HE3/54' suffix in SA64AHE3/54?
The 'HE3' suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance; '/54' denotes packaging in 13-inch paper tape with 4000 units per reel and 54 mm pitch - standard for automated insertion equipment used in automotive manufacturing lines. This full designation confirms SA64AHE3/54 meets both performance and process requirements for high-volume automotive production.
Is SA64AHE3/54 suitable for bidirectional transient protection?
No, SA64AHE3/54 is a unidirectional TVS diode - it conducts only in reverse bias above its breakdown voltage and blocks forward current beyond ~3.5 V. For bidirectional protection (e.g., AC lines or data buses), the SA64CA variant must be used. Using SA64AHE3/54 in bidirectional configurations risks forward conduction and failure; always verify polarity alignment in schematic and layout for SA64AHE3/54.
What is the maximum clamping voltage of SA64AHE3/54 under surge conditions?
The maximum clamping voltage (VC) of SA64AHE3/54 is 103 V at 4.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed across temperature and lifetime per Vishay's characterization; it defines the upper voltage limit imposed on protected circuitry during surge events and must be compared directly against the absolute maximum ratings of downstream components when designing SA64AHE3/54 into a system.
Does SA64AHE3/54 require a heatsink for continuous operation?
No, SA64AHE3/54 does not require an external heatsink for its specified 3.0 W steady-state power dissipation - this rating assumes mounting on an infinite heatsink per JEDEC standards. In typical PCB layouts with 1–2 oz copper and moderate copper area, derating applies; actual thermal performance depends on pad size, trace width, and ambient temperature. For continuous DC leakage or frequent surge repetition, thermal simulation using SA64AHE3/54's RθJA (≈ 50 °C/W) is recommended.
How does SA64AHE3/54 compare to SA64A-E3/54?
SA64AHE3/54 and SA64A-E3/54 share identical electrical specifications and DO-15 packaging, but differ in qualification: SA64AHE3/54 is AEC-Q101 qualified and meets JESD201 Class 2 whisker resistance, while SA64A-E3/54 is commercial-grade (JESD201 Class 1A). Both are RoHS-compliant, but only SA64AHE3/54 is approved for automotive under-hood applications; SA64A-E3/54 is limited to consumer or industrial non-automotive use.
SA64AHE3/54 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:
- -
- 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)
SA64AHE3/54 FAQ
1.How can I place an order for SA64AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA64AHE3/54 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 SA64AHE3/54 reliable?
The price and inventory of SA64AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA64AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA64AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA64AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA64AHE3/54?
SA64AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA64AHE3/54 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 SA64AHE3/54?
For technical support, including SA64AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA64AHE3/54 requirements.
6.How does Aetrix verify that SA64AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA64AHE3/54 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 SA64AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA64AHE3/54?
All SA64AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA64AHE3/54, 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 SA64AHE3/54 part is unused and in its original packaging.
Return procedure for SA64AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA64AHE3/54 Tags
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