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Vishay General Semiconductor - Diodes Division SA7.0-E3/54
- Part No.:
- SA7.0-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.0-E3/54.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,739
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Product details
Overview
SA7.0-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for overvoltage protection of sensitive electronics. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 41.7 A peak pulse current (IPPM), and clamps transients to ≤12.0 V at rated surge. It is used to protect MOSFETs, ICs, and sensor signal lines in industrial power supplies and automotive control modules.
For engineers reviewing the SA7.0-E3/54 datasheet, SA7.0-E3/54 pinout, SA7.0-E3/54 application, or SA7.0-E3/54 equivalent, this page delivers verified electrical parameters, polarity marking guidance, thermal derating behavior, and AEC-Q101-qualified alternatives - all critical for ESD/surge protection circuit design and BOM validation.
Technical Context
The SA7.0-E3/54 operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable clamping under repetitive 10/1000 µs surges. Its 500 W peak pulse power rating (at TA = 25 °C) and low incremental surge resistance enable effective suppression of inductive switching spikes and lightning-induced transients.
It exhibits a maximum forward voltage of 3.5 V at 100 A surge and a reverse leakage current ≤600 µA at VWM, supporting reliable operation across -55 °C to +175 °C junction temperature range. Thermal derating begins above 25 °C ambient, with steady-state power dissipation reduced to 3.0 W at lead temperature (TL) = 75 °C.
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 - Ensures predictable avalanche onset within tight tolerance band |
| IPPM | 41.7 A - Peak surge current it safely clamps with 10/1000 µs waveform |
| VC | ≤12.0 V - Clamped voltage at IPPM, defining worst-case stress on downstream components |
| PPPM | 500 W - Surge energy handling capacity per single transient event |
| TJ max. | +175 °C - Enables use in high-temperature environments like engine control units |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package with matte tin-plated leads |
Pinout & Package
DO-204AC (DO-15) molded epoxy package with axial leads; cathode identified by color band on one end. Matte tin-plated terminals meet J-STD-002 solderability and JESD 201 Class 1A whisker resistance requirements. RoHS-compliant, commercial-grade variant (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line (e.g., VIN, signal trace); conducts during overvoltage to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage under thermal cycling and humidity stress |
| 500 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges without degradation |
| AEC-Q101 qualified (via HE3 variant) | Validated for automotive under-hood applications requiring reliability beyond commercial grade |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes voltage overshoot during clamping, reducing risk of downstream component damage |
| Solder dip rated 275 °C for 10 s | Compatible with standard wave-soldering processes without delamination or parameter shift |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines from inductive kickback during relay or solenoid switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going transients. Use Value: Limits voltage excursion to ≤12.0 V, preventing latch-up or oxide breakdown in 5 V/3.3 V logic interfaces. | Use Scenario: Shielding LIN bus transceivers and sensor inputs (e.g., door lock actuators) from load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-rated TVS on supply input to absorb 500 W surges while maintaining <600 µA leakage at 7.0 V. Use Value: Meets ISO 7637-2 Pulse 1/2a immunity requirements without adding series impedance or latency. |
| Consumer Power Adapters | Telecom Base Station Interfaces |
Use Scenario: Secondary-side overvoltage protection on DC output rails of AC/DC adapters subject to capacitor discharge transients. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed after rectifier and before regulation stage. Use Value: Responds in <1 ns to clamp 10/1000 µs surges, preserving output regulation integrity and preventing brownout resets. | Use Scenario: Input protection for RS-485 transceivers connected to outdoor cabling exposed to induced lightning surges. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair supply pins to limit common-mode overvoltage. Use Value: Withstands 41.7 A peak pulse without failure, enabling compliance with ITU-T K.20 surge immunity standards. |
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 | Same VWM (7.0 V), identical DO-214AC (SMA) package; 41.7 A IPPM, but 12.0 V VC; higher thermal resistance due to smaller footprint | Suitable for space-constrained PCBs where axial DO-15 layout is impractical | Select SMAJ7.0A when board area is limited and thermal management via copper pour compensates for lower power density |
| SMCJ7.0A | Same VWM and VC, but DO-214AB (SMC) package; 64.5 A IPPM, 500 W rating at 25 °C; larger thermal mass and lower RθJA | Better suited for high-reliability industrial systems requiring extended surge endurance | Choose SMCJ7.0A when repeated surge exposure or elevated ambient temperatures demand superior thermal performance |
Compared with SA7.0-E3/54, SMAJ7.0A offers identical clamping performance in a surface-mount package ideal for automated assembly, while SMCJ7.0A provides higher surge margin and thermal robustness - both require layout review for mechanical fit and thermal relief, as neither is pin-compatible with the axial DO-15 form factor.
Availability
SA7.0-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer power adapters requiring stable component supply and RoHS-compliant sourcing.
Supply support for SA7.0-E3/54 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, efficiency, and qualification for demanding environments.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for cost-effective, high-energy transient suppression in power supply inputs, signal lines, and automotive subsystems - balancing speed, clamping precision, and ruggedness.
FAQ
What is the polarity configuration of the SA7.0-E3/54?
The SA7.0-E3/54 is a unidirectional TVS diode with cathode indicated by a color band on one axial lead. During normal operation, it blocks up to 7.0 V in reverse bias; during overvoltage, it avalanches from cathode to anode to shunt surge current to ground. This polarity must be observed in PCB layout to ensure correct clamping direction.
Does the SA7.0-E3/54 meet automotive qualification standards?
The SA7.0-E3/54 itself is RoHS-compliant commercial-grade (E3 suffix). However, its qualified counterpart SA7.0HE3/54 is AEC-Q101 certified. For automotive applications requiring qualification, SA7.0HE3/54 must be specified - it shares identical electrical specs and DO-15 packaging but undergoes additional stress testing per AEC-Q101.
What is the maximum clamping voltage of the SA7.0-E3/54 at its rated peak pulse current?
The SA7.0-E3/54 has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated 41.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed per datasheet Table 1 and defines the upper voltage limit imposed on protected circuitry during surge events.
Can the SA7.0-E3/54 be used in bi-directional protection circuits?
No - the SA7.0-E3/54 is strictly unidirectional. Bi-directional variants in the same family carry the "CA" suffix (e.g., SA7.0CA). Using SA7.0-E3/54 in AC or bidirectional signal paths would result in forward conduction during negative half-cycles, causing malfunction or damage. Always verify suffix: "A" = unidirectional, "CA" = bi-directional.
What is the thermal derating behavior of the SA7.0-E3/54 above 25 °C ambient?
The SA7.0-E3/54 follows Vishay's standard derating curve: peak pulse power remains at 500 W up to 25 °C ambient, then decreases linearly to ~300 W at 75 °C and ~100 W at 125 °C. Steady-state power dissipation drops from 3.0 W at TL = 75 °C to zero at TL = 150 °C, per Figure 2 and Figure 5 in Document 88378.
SA7.0-E3/54 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:
- 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-E3/54 FAQ
1.How can I place an order for SA7.0-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.0-E3/54 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 SA7.0-E3/54 reliable?
The price and inventory of SA7.0-E3/54 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-E3/54 is usually 5 days.
3.What payment methods are accepted for SA7.0-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.0-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.0-E3/54?
SA7.0-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.0-E3/54 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 SA7.0-E3/54?
For technical support, including SA7.0-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.0-E3/54 requirements.
6.How does Aetrix verify that SA7.0-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA7.0-E3/54 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 SA7.0-E3/54 meets industry standards.
7.What is the process for return or replacement of SA7.0-E3/54?
All SA7.0-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.0-E3/54, 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 SA7.0-E3/54 part is unused and in its original packaging.
Return procedure for SA7.0-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.0-E3/54 Tags
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