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Vishay General Semiconductor - Diodes Division SA48HE3/73
- Part No.:
- SA48HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA48HE3/73.pdf
- Description:
- TVS DIODE 48VWM 85.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,907
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Product details
Overview
SA48HE3/73 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features 48 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR) at 1 mA, 77.4 V maximum clamping voltage (VC) at 6.5 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SA48HE3/73 datasheet, SA48HE3/73 pinout, SA48HE3/73 application, or SA48HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-15 mechanical data, clamping performance under standardized surge conditions, and direct alternatives for circuit-level ESD/surge redesign.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with identical VBR, VC, and leakage characteristics in forward and reverse directions. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting MOSFET gates and microcontroller I/O pins against inductive switching spikes.
The device complies with AEC-Q101 stress test requirements and supports continuous operation from –55 °C to +175 °C junction temperature. Its 3.0 W steady-state power dissipation (at TL = 75 °C) and 70 A non-repetitive forward surge rating (for uni-directional variants only - not applicable here) reflect its robustness in automotive-grade transient suppression roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected line. |
| VBR (min/max) | 53.3 V / 58.9 V at IT = 1 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 77.4 V at 6.5 A (10/1000 µs) - Clamping voltage limits downstream component stress during 500 W transient surges. |
| PPPM | 500 W - Peak pulse power handling capacity per single 10/1000 µs waveform, validated at 0.01 % duty cycle. |
| ID @ VWM | 1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ Range | –55 °C to +175 °C - Full automotive-grade junction temperature range supports under-hood and industrial control environments. |
| Qualification | AEC-Q101 qualified - Validated for automotive electronics per stress test requirements including HTRB, HTGB, and temperature cycling. |
Pinout & Package
SA48HE3/73 uses the DO-204AC (DO-15) axial-leaded package: molded epoxy body with matte tin-plated leads solderable per J-STD-002; no polarity marking (bi-directional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between leads; either terminal serves as input/output for bidirectional clamping. |
| Lead 1 / Lead 2 | Connection to protected line and ground reference | Leads mount in series with signal/power line and shunt to ground; layout must minimize trace inductance to preserve clamping speed. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables <1 ns response time and stable VBR over lifetime, critical for fast ESD and lightning-induced transients. |
| 500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out with low-inductance grounding. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, ADAS sensors, and body electronics modules. |
| RoHS-compliant & halogen-free | Meets JEDEC JS709A and EU Directive 2011/65/EU requirements for environmentally constrained manufacturing. |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation essential for safety-critical industrial and transportation systems. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., oxygen, pressure) from load dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bi-directional clamping element placed across differential signal pair or supply rail to ground. Use Value: Limits transient voltage to ≤77.4 V during 6.5 A surges, preventing latch-up or gate oxide damage in connected ASICs. |
Use Scenario: Shielding digital input modules in programmable logic controllers from inductive kickback caused by relay coil de-energization. IC Role / Device Role / Timing Role: Shunt-connected TVS on 24 V DC input channel, referenced to common ground plane. Use Value: Absorbs 500 W energy pulses without degradation, maintaining system uptime in factory automation environments. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHY interfaces and RS-485 transceivers against ESD and lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Paired with common-mode chokes and GDTs in multi-stage telecom surge protection circuits. Use Value: Fast clamping action (<1 ns) prevents data corruption during ±8 kV contact ESD events per IEC 61000-4-2. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to clamp flyback voltage. Use Value: Withstands repetitive 500 W surges at 0.01 % duty cycle, extending motor driver IC lifetime in high-cycle appliances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-E3/5A | Uni-directional; same VWM (48 V), slightly lower VC (77.0 V @ 6.5 A); SMA package (surface-mount). | Requires polarity-aware placement; better suited for space-constrained PCBs where through-hole DO-15 is impractical. | Select when board real estate is limited and unidirectional protection suffices (e.g., DC power rails with defined ground reference). |
| 1.5KE48CA | Same bi-directional function; higher PPPM (1500 W); larger DO-201AD package; VC = 77 V @ 19.3 A. | Higher energy handling suits heavy industrial equipment exposed to frequent high-energy surges (e.g., welding controls). | Choose when legacy 1.5 kW surge standards apply and PCB layout allows larger axial package footprint. |
Compared with SA48HE3/73, SMAJ48A-E3/5A offers surface-mount compatibility but lacks bi-directional symmetry, while 1.5KE48CA provides triple the pulse power at the cost of larger size and higher clamping variance - making SA48HE3/73 optimal for AEC-Q101-compliant, space-balanced automotive and industrial designs.
Availability
SA48HE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor drives requiring stable component supply and long-term lifecycle assurance.
Supply support for SA48HE3/73 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 and automotive qualification.
The SAxxHE3 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, AEC-Q101-compliant transient suppression in harsh electromagnetic environments.
FAQ
What is the polarity configuration of SA48HE3/73?
SA48HE3/73 is a bi-directional TVS diode with symmetrical electrical characteristics in both directions. It has no cathode marking and functions identically regardless of lead orientation - ideal for AC-coupled or differential signal lines where polarity cannot be guaranteed.
Is SA48HE3/73 qualified for automotive use?
Yes, SA48HE3/73 carries AEC-Q101 qualification per Vishay documentation (Document Number 88378, Revision 18-Sep-12). This includes validation across high-temperature reverse bias, temperature cycling, and humidity testing - confirming suitability for engine control, body electronics, and ADAS subsystems.
What is the maximum clamping voltage of SA48HE3/73 under surge conditions?
The maximum clamping voltage (VC) of SA48HE3/73 is 77.4 V at 6.5 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events.
Can SA48HE3/73 replace SA48A or SA48CA in existing designs?
SA48HE3/73 replaces SA48CA (bi-directional variant) directly - both share identical VWM, VBR, VC, and DO-204AC packaging. SA48A (uni-directional) is not interchangeable due to polarity dependence and different marking; substitution requires schematic and layout review.
What is the RoHS and halogen-free status of SA48HE3/73?
SA48HE3/73 is RoHS-compliant per EU Directive 2011/65/EU and halogen-free per JEDEC JS709A. The "HE3" suffix explicitly denotes AEC-Q101 qualification and compliance with both environmental standards, confirmed in Vishay's material categorization documentation.
SA48HE3/73 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):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 85.5V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
SA48HE3/73 FAQ
1.How can I place an order for SA48HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA48HE3/73 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 SA48HE3/73 reliable?
The price and inventory of SA48HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA48HE3/73 is usually 5 days.
3.What payment methods are accepted for SA48HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA48HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA48HE3/73?
SA48HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA48HE3/73 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 SA48HE3/73?
For technical support, including SA48HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA48HE3/73 requirements.
6.How does Aetrix verify that SA48HE3/73 is sourced from the original manufacturer or authorized distributors?
All SA48HE3/73 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 SA48HE3/73 meets industry standards.
7.What is the process for return or replacement of SA48HE3/73?
All SA48HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA48HE3/73, 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 SA48HE3/73 part is unused and in its original packaging.
Return procedure for SA48HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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