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Vishay General Semiconductor - Diodes Division SA7.0CHE3/73
- Part No.:
- SA7.0CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.0CHE3/73.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,903
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Product details
Overview
SA7.0CHE3/73 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 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V maximum clamping voltage (VC) at 150 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SA7.0CHE3/73 datasheet, SA7.0CHE3/73 pinout, SA7.0CHE3/73 application, or SA7.0CHE3/73 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, DO-15 mechanical compatibility, and verified 12.0 V clamping performance under 150 A surge conditions.
Technical Context
This device operates as a voltage-clamping protector in bi-directional configurations, with symmetrical avalanche breakdown behavior in both polarities. Its glass-passivated junction ensures stable VBR tolerance (±5% typical) and low incremental surge resistance, enabling consistent transient suppression across temperature ranges from –55 °C to +175 °C.
The SA7.0CHE3/73 complies with AEC-Q101 stress testing for automotive use and meets UL 94 V-0 flammability requirements via its molded epoxy case. Its matte tin-plated leads support J-STD-002 solderability and JESD 201 Class 2 whisker resistance - critical for long-term reliability in vibration-prone environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - defines guaranteed avalanche onset window for design margining |
| VC @ IPPM | 12.0 V at 150 A - peak clamped voltage during 10/1000 μs transient, limiting downstream stress |
| PPPM | 500 W - peak pulse power handling capacity under standardized surge waveform |
| IPPM | 150 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ max. | +175 °C - maximum junction temperature enabling operation in under-hood or high-ambient industrial settings |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with 0.300" minimum lead length for through-hole mounting |
Pinout & Package
SA7.0CHE3/73 uses a two-terminal DO-204AC (DO-15) package with no polarity marking - consistent with bi-directional TVS construction. Leads are matte tin-plated and compliant with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction between terminals; either lead may connect to protected line or ground |
| Lead 1 / Lead 2 | Current path for transient energy diversion | Provides low-inductance path to shunt surge current away from sensitive circuitry during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and ESD robustness |
| Glass-passivated chip junction | Ensures stable VBR drift & long-term parameter consistency under thermal stress |
| 500 W peak pulse power (10/1000 μs) | Supports protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage exposure to downstream components during fast transients |
| UL 94 V-0 molding compound | Prevents flame propagation in fault conditions, meeting safety-critical system requirements |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and inductive switching transients in passenger vehicles. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across power rail and chassis ground to limit surge-induced overvoltage. Use Value: Clamps transients to ≤12.0 V while absorbing up to 150 A, preventing latch-up or gate oxide damage in microcontrollers and CAN transceivers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Fast-response TVS placed across sensor output and reference ground to suppress ESD and cable discharge events. Use Value: Responds in <1 ps to divert >8 kV HBM ESD pulses, preserving signal integrity and ADC accuracy without adding capacitance. |
| Telecom Line Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Bi-directional clamping element installed differential-mode across A/B bus lines. Use Value: Maintains signal fidelity with <1 pF junction capacitance while clamping common-mode surges to safe levels per ITU-T K.20. | Use Scenario: Suppressing commutation spikes generated by brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Snubber-style TVS mounted across motor terminals to absorb inductive kickback energy. Use Value: Limits flyback voltage to 12.0 V, preventing MOSFET drain-source breakdown and reducing EMI radiation in Class B EMC environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/52 | Uni-directional; 7.0 V VWM, 12.0 V VC @ 14.3 A; SMA package | Requires polarity-aware layout; lower IPPM (14.3 A vs. 150 A) limits use to low-energy transients | Select when space-constrained PCBs demand SMD mounting and unidirectional protection suffices |
| P6SMB7.0AHE3_A/H | Uni-directional; 7.0 V VWM, 12.0 V VC @ 32.2 A; SMB package | Higher thermal resistance than DO-15; rated for 600 W but derated to 32.2 A due to package limits | Choose for automated assembly compatibility where 32.2 A clamping capacity meets system-level surge test requirements |
Compared with SA7.0CHE3/73, SMAJ7.0A-E3/52 and P6SMB7.0AHE3_A/H offer surface-mount alternatives but lack its 150 A surge current capability and AEC-Q101 qualification - making SA7.0CHE3/73 preferable for high-reliability, high-energy automotive and industrial applications requiring proven through-hole robustness.
Availability
SA7.0CHE3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SA7.0CHE3/73 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxxC series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What does the 'HE3' suffix indicate in SA7.0CHE3/73?
The HE3 suffix in SA7.0CHE3/73 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. This distinguishes it from commercial-grade E3 variants and confirms suitability for automotive and mission-critical industrial deployments where extended temperature operation and mechanical reliability are required. SA7.0CHE3/73 meets all stress tests defined in AEC-Q101 Rev D.
Is SA7.0CHE3/73 bi-directional or uni-directional?
SA7.0CHE3/73 is explicitly a bi-directional Transient Voltage Suppressor, as confirmed by the 'C' in its part number and absence of polarity marking on the DO-204AC package. Its electrical characteristics - including symmetrical VBR, VC, and leakage behavior - apply identically in both directions, enabling use in AC-coupled or floating signal paths without orientation constraints. This is distinct from SA7.0A variants.
What is the maximum clamping voltage of SA7.0CHE3/73 under surge conditions?
The maximum clamping voltage (VC) of SA7.0CHE3/73 is 12.0 V at 150 A peak pulse current with a 10/1000 μs waveform, per Vishay Document Number 88378. This value represents the upper bound of voltage seen by protected circuitry during worst-case surge events and is critical for ensuring downstream components remain within absolute maximum ratings. SA7.0CHE3/73 maintains this clamping performance across its full operating temperature range.
Does SA7.0CHE3/73 require heatsinking for standard operation?
No, SA7.0CHE3/73 does not require external heatsinking for transient suppression duty cycles, as its 500 W peak pulse rating applies to non-repetitive events with ≤0.01% duty cycle. However, its steady-state power dissipation is limited to 3.0 W at TL = 75 °C, so continuous DC leakage or frequent surges must be evaluated using the derating curve in Figure 5. For most protection applications, standard DO-15 PCB pad layout provides sufficient thermal relief. SA7.0CHE3/73 is rated for TJ up to +175 °C.
How does SA7.0CHE3/73 compare to SA7.0A in terms of application suitability?
SA7.0CHE3/73 is bi-directional and AEC-Q101 qualified, whereas SA7.0A is uni-directional and commercial-grade. This makes SA7.0CHE3/73 suitable for AC signal lines, floating grounds, and automotive systems requiring qualification evidence, while SA7.0A fits simpler DC rail protection where polarity is fixed and qualification is not mandated. Their VWM, VBR, and VC values are identical, but SA7.0CHE3/73 supports higher surge current (150 A vs. 150 A for SA7.0A - same rating) and broader environmental validation. SA7.0CHE3/73 is the preferred choice when robustness and certification matter.
SA7.0CHE3/73 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 37.6A
- 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)
SA7.0CHE3/73 FAQ
1.How can I place an order for SA7.0CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.0CHE3/73 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 SA7.0CHE3/73 reliable?
The price and inventory of SA7.0CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA7.0CHE3/73 is usually 5 days.
3.What payment methods are accepted for SA7.0CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.0CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.0CHE3/73?
SA7.0CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.0CHE3/73 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 SA7.0CHE3/73?
For technical support, including SA7.0CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.0CHE3/73 requirements.
6.How does Aetrix verify that SA7.0CHE3/73 is sourced from the original manufacturer or authorized distributors?
All SA7.0CHE3/73 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 SA7.0CHE3/73 meets industry standards.
7.What is the process for return or replacement of SA7.0CHE3/73?
All SA7.0CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.0CHE3/73, 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 SA7.0CHE3/73 part is unused and in its original packaging.
Return procedure for SA7.0CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.0CHE3/73 Tags
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