My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA64HE3/73
- Part No.:
- SA64HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA64HE3/73.pdf
- Description:
- TVS DIODE 64VWM 114VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,692
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA64HE3/73 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for overvoltage protection of sensitive electronics. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1.0 mA, 103 V maximum clamping voltage (VC) at 4.9 A peak pulse current, 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA64HE3/73 datasheet, SA64HE3/73 pinout, SA64HE3/73 application, or SA64HE3/73 equivalent, this part is selected for robust ESD and surge protection on DC power rails and signal lines where stable clamping performance, low leakage (<1.0 µA), and high surge robustness (70 A IFSM) are required in harsh environments.
Technical Context
The SA64HE3/73 operates as a uni-directional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient events. Its clamping behavior is defined by a well-controlled incremental surge resistance and exhibits a +0.076 %/°C temperature coefficient of VBR, ensuring predictable voltage margin shift across –55 °C to +175 °C operating range.
It is rated for 500 W peak pulse power under standardized 10/1000 µs waveform with 0.01 % duty cycle, and supports steady-state dissipation of 3.0 W on infinite heatsink at TL = 75 °C. The device meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse working voltage before clamping begins |
| VBR (min/max) | 71.1 V / 78.6 V at 1.0 mA - Ensures reliable avalanche initiation within tight tolerance band |
| VC @ IPPM | 103 V at 4.9 A - Limits downstream voltage stress during 10/1000 µs transients |
| PPPM | 500 W - Withstands high-energy surges common in automotive load-dump and inductive switching |
| IFSM | 70 A - Handles non-repetitive 8.3 ms half-sine forward surge without failure |
| TJ max | +175 °C - Enables operation in under-hood automotive and industrial high-temp environments |
| Leakage ID | <1.0 µA at 64 V - Minimizes standby power loss and avoids false triggering |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected circuit ground or low-side rail during uni-directional clamping |
| Cathode (banded end) | Avalanche junction anode / Clamping node | Connected to line/rail being protected; conducts transient energy to ground when VWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| 500 W peak pulse power (10/1000 µs) | Provides immunity against ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surges |
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast-rising transients (e.g., ESD, relay bounce) |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and automotive material compliance requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients up to 35 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Uni-directional TVS placed between power input and ground to clamp positive-going surges only. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤103 V, preventing latch-up or permanent damage. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules. IC Role / Device Role / Timing Role: Line-to-ground TVS on each signal trace to absorb ESD and field-induced spikes. Use Value: Maintains signal integrity with <1.0 µA leakage at 64 V, avoiding DC offset errors in precision measurement paths. |
| DC Motor Drive Board Protection | Telecom Power Supply Input Stage |
Use Scenario: Suppressing inductive kickback from brushed DC motors in factory automation actuators. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge supply rail to divert flyback energy. Use Value: Withstands 70 A single-half-sine surge (8.3 ms), enabling reliable operation without derating in high-current drive circuits. | Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding base station subsystems. IC Role / Device Role / Timing Role: Primary clamping device on DC input before DC/DC converters and hot-swap controllers. Use Value: Delivers 500 W pulse handling with 103 V clamping, reducing need for multi-stage protection and saving board space. |
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-E3/5T | Same VWM (64 V), lower PPPM (400 W), SMA package (surface-mount) | Preferred for automated SMT assembly; less robust for high-energy transients | Select when board space is constrained and surge threat level is moderate (IEC 61000-4-5 Level 2) |
| 1.5KE68A | Higher VWM (68 V), same DO-15 package, 1500 W PPPM, but not AEC-Q101 qualified | Suitable for industrial power supplies; lacks automotive qualification and tighter VBR tolerance | Choose for cost-sensitive non-automotive designs requiring higher pulse power margin |
Compared with SMAJ64A-E3/5T and 1.5KE68A, the SA64HE3/73 offers AEC-Q101 qualification, tighter VBR tolerance (71.1–78.6 V vs. typical ±5 %), and optimized thermal performance in leaded DO-15 for through-hole reliability-making it preferred for automotive and mission-critical industrial deployments.
Availability
SA64HE3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and DC motor control systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SA64HE3/73 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SAxxHE3 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and precise clamping performance are mandatory.
FAQ
What is the clamping voltage of SA64HE3/73 and how is it measured?
The SA64HE3/73 has a maximum clamping voltage (VC) of 103 V, measured at 4.9 A peak pulse current using the standardized 10/1000 µs double-exponential waveform. This value represents the upper limit of voltage imposed on the protected circuit during a surge event and is guaranteed per the Vishay datasheet revision 18-Sep-12. The SA64HE3/73 maintains this clamping performance across its full operating temperature range.
Is SA64HE3/73 suitable for automotive applications?
Yes, SA64HE3/73 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and infotainment power supplies. Its DO-204AC package, 175 °C max junction temperature, and robust surge ratings (70 A IFSM, 500 W PPPM) meet stringent automotive environmental and reliability requirements. The SA64HE3/73 is manufactured with HE3 suffix indicating AEC-Q101 compliance and JESD 201 Class 2 whisker resistance.
How does the SA64HE3/73 differ from bi-directional TVS diodes like SA64CA?
The SA64HE3/73 is uni-directional and features a cathode band for polarity identification, while SA64CA is bi-directional with no marking and symmetrical clamping in both directions. SA64HE3/73 provides lower leakage (<1.0 µA at 64 V) and is intended for DC rail protection where only positive transients occur. SA64CA would be used in AC-coupled or bidirectional signal lines. The SA64HE3/73 cannot substitute for SA64CA without circuit redesign.
What is the meaning of the 'HE3' suffix in SA64HE3/73?
The 'HE3' suffix in SA64HE3/73 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. 'H' denotes AEC-Q101 qualification, 'E3' confirms RoHS compliance and commercial-grade reliability per Vishay's material categorization. This distinguishes it from 'E3' (RoHS, non-automotive) and 'HE3/54' (same specs, different packaging format). The SA64HE3/73 meets automotive-grade process and testing requirements.
Can SA64HE3/73 be used in parallel for higher surge current handling?
No, SA64HE3/73 should not be paralleled without external balancing components due to inherent VBR mismatch (71.1–78.6 V), which causes uneven current sharing and potential thermal runaway. For higher surge capability, select a single higher-rated device (e.g., SA70HE3/73) or verify matched-bin parts with <1 % VBR spread. The SA64HE3/73 datasheet does not recommend paralleling and specifies absolute maximum ratings for individual units only.
SA64HE3/73 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:
- 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)
SA64HE3/73 FAQ
1.How can I place an order for SA64HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA64HE3/73 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 SA64HE3/73 reliable?
The price and inventory of SA64HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA64HE3/73 is usually 5 days.
3.What payment methods are accepted for SA64HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA64HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA64HE3/73?
SA64HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA64HE3/73 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 SA64HE3/73?
For technical support, including SA64HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA64HE3/73 requirements.
6.How does Aetrix verify that SA64HE3/73 is sourced from the original manufacturer or authorized distributors?
All SA64HE3/73 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 SA64HE3/73 meets industry standards.
7.What is the process for return or replacement of SA64HE3/73?
All SA64HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA64HE3/73, 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 SA64HE3/73 part is unused and in its original packaging.
Return procedure for SA64HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA64HE3/73 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
