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Vishay General Semiconductor - Diodes Division SA7.0-E3/73
- Part No.:
- SA7.0-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.0-E3/73.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,466
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Product details
Overview
SA7.0-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 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, 500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA7.0-E3/73 datasheet, SA7.0-E3/73 pinout, SA7.0-E3/73 application, or SA7.0-E3/73 equivalent, this page delivers verified electrical parameters, polarity marking guidance, clamping behavior under surge, thermal derating curves, and direct alternatives for circuit-level ESD and load-dump protection design.
Technical Context
The SA7.0-E3/73 operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient events such as ISO 7637-2 load dump or IEC 61000-4-5 surges. Its unidirectional configuration provides reverse-biased clamping only - forward conduction is limited to 3.5 V at 100 A, supporting robust surge handling without latch-up.
Thermal performance is defined by a 175 °C maximum junction temperature and 3.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C. Derating follows a linear curve above 25 °C ambient, with full power maintained up to 75 °C lead temperature per Fig. 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for reliable standby operation. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Confirmed breakdown threshold range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 12.0 V at 150 A (10/1000 µs) - Clamped voltage during worst-case surge; defines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - Peak pulse power capability; supports single-event transients up to 150 A without failure under standard test waveform. |
| IFSM | 70 A - Non-repetitive forward surge current rating (10 ms half-sine); validates robustness against inrush or fault currents. |
| TJ max. | 175 °C - Maximum junction temperature; enables operation in under-hood automotive environments and high-power industrial enclosures. |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package with matte tin-plated leads; compatible with wave soldering (275 °C, 10 s max). |
Pinout & Package
SA7.0-E3/73 uses a two-terminal DO-204AC (DO-15) axial package. The cathode is marked by a color band on the body; the anode is the unmarked end. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp node | Connected to protected line (e.g., +12 V rail); conducts avalanche current during overvoltage to shunt energy to ground. |
| Anode (unbanded end) | Reference/return path | Typically tied to system ground or low-impedance return; completes clamping loop and establishes reference for VWM and VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics over lifetime and temperature; eliminates surface leakage paths that degrade long-term reliability. |
| 500 W peak pulse power (10/1000 µs) | Supports automotive load-dump immunity (ISO 7637-2 Pulse 5a) and industrial surge standards (IEC 61000-4-5 Level 3) without derating. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and infotainment power supplies. |
| Low incremental clamping resistance | Ensures minimal voltage overshoot during high-current transients; VC − VBR = ~4.2 V at 150 A confirms tight clamping margin. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets UL 94 V-0 flammability and JESD 201 Class 1A whisker resistance; suitable for consumer, industrial, and telecom equipment. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 load-dump transients (up to +120 V, 400 ms duration). IC Role / Device Role / Timing Role: Primary clamping device placed between battery input and upstream DC/DC converter input stage. Use Value: Limits voltage seen by downstream regulator to ≤12.0 V during 150 A surge, preventing overvoltage shutdown or damage to LDOs and PMICs. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to microcontroller ADC inputs in factory automation systems. IC Role / Device Role / Timing Role: Point-of-entry TVS on each sensor line, mounted adjacent to connector to intercept induced ESD and switching noise. Use Value: Clamps fast transients (≤1 ns rise time) to <12.0 V while adding <10 pF capacitance - preserving signal integrity for 10-bit+ precision measurements. |
| Consumer USB Power Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Securing 5 V USB Type-A port inputs in smart home hubs against hot-plug and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between USB VBUS and system power rail, referenced to common ground. Use Value: Withstands 500 W pulses without degradation; maintains 7.0 V stand-off to avoid false triggering during normal 4.75–5.25 V operation. | Use Scenario: Front-end protection of Ethernet PHY power pins (3.3 V or 5 V) in network switches exposed to lightning-induced surges on PoE lines. IC Role / Device Role / Timing Role: Secondary clamping element after gas discharge tube (GDT), absorbing residual energy after GDT fires. Use Value: Fast response captures sub-microsecond overshoot missed by GDT; 12.0 V clamping prevents latch-up in sensitive PHY transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A | Same VWM (7.0 V), identical DO-214AC (SMA) package; 400 W PPPM, higher VC (12.5 V @ 13.7 A). | Lower peak power rating limits suitability for automotive load-dump; better for space-constrained PCBs requiring SMT mounting. | Select SMAJ7.0A when board area is constrained and surge levels are ≤400 W; verify layout clearance for SMA footprint. |
| 1N6105A | Same DO-204AC package; VWM = 6.8 V, VC = 11.2 V @ 150 A, PPPM = 500 W; not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial designs where qualification is not mandated. | Choose 1N6105A for cost-sensitive non-automotive applications requiring identical form factor and clamping performance. |
Compared with SMAJ7.0A and 1N6105A, SA7.0-E3/73 uniquely combines AEC-Q101 qualification, 500 W rating, and DO-204AC through-hole compatibility - making it the preferred choice for automotive and high-reliability industrial power rail protection where qualification and proven surge margin are mandatory.
Availability
SA7.0-E3/73 is available at Aetrix Electronics and suitable for automotive ECU power supply protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for SA7.0-E3/73 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 TVS devices with emphasis on reliability, ruggedness, and automotive-grade qualification.
The SAx.x series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - including automotive, industrial controls, and infrastructure equipment where voltage spikes threaten system uptime.
FAQ
What is the polarity configuration of SA7.0-E3/73?
SA7.0-E3/73 is a unidirectional TVS diode. Its cathode is identified by a color band on the DO-204AC package body; the anode is the unbanded end. This configuration allows clamping only in reverse bias - forward conduction occurs at ~3.5 V, limiting its use to DC rail protection where polarity is fixed and known.
Does SA7.0-E3/73 meet automotive qualification standards?
Yes, SA7.0-E3/73 is AEC-Q101 qualified, as confirmed in Vishay document 88378 (Revision: 18-Sep-12). This qualification validates its reliability for automotive applications including under-hood environments, engine control modules, and body electronics subject to temperature cycling, mechanical shock, and humidity testing.
What is the maximum clamping voltage of SA7.0-E3/73 under surge conditions?
The maximum clamping voltage of SA7.0-E3/73 is 12.0 V at 150 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 circuits during worst-case transient events.
Can SA7.0-E3/73 be used in bi-directional protection applications?
No, SA7.0-E3/73 is unidirectional only. For bi-directional protection (e.g., AC lines or differential data buses), Vishay offers the SA7.0CA variant - which has symmetrical breakdown in both directions and no polarity marking. Using SA7.0-E3/73 in bi-directional configurations risks forward conduction and potential failure.
What is the RoHS and lead-free status of SA7.0-E3/73?
SA7.0-E3/73 is RoHS-compliant and lead-free, as indicated by the "E3" suffix per Vishay's ordering nomenclature. It meets Directive 2011/65/EU requirements and is qualified to JESD 201 Class 1A for tin whisker resistance, making it suitable for commercial and industrial applications with environmental compliance mandates.
SA7.0-E3/73 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA7.0-E3/73 FAQ
1.How can I place an order for SA7.0-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.0-E3/73 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 SA7.0-E3/73 reliable?
The price and inventory of SA7.0-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA7.0-E3/73 is usually 5 days.
3.What payment methods are accepted for SA7.0-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.0-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.0-E3/73?
SA7.0-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.0-E3/73 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 SA7.0-E3/73?
For technical support, including SA7.0-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.0-E3/73 requirements.
6.How does Aetrix verify that SA7.0-E3/73 is sourced from the original manufacturer or authorized distributors?
All SA7.0-E3/73 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 SA7.0-E3/73 meets industry standards.
7.What is the process for return or replacement of SA7.0-E3/73?
All SA7.0-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.0-E3/73, 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 SA7.0-E3/73 part is unused and in its original packaging.
Return procedure for SA7.0-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.0-E3/73 Tags
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