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Vishay General Semiconductor - Diodes Division SA36CA-E3/73
- Part No.:
- SA36CA-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36CA-E3/73.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,533
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Product details
Overview
SA36CA-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD, lightning, and inductive switching transients. It features 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), 8.6 A peak pulse current (IPPM), and clamps to ≤58.1 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SA36CA-E3/73 datasheet, SA36CA-E3/73 pinout, SA36CA-E3/73 application, or SA36CA-E3/73 equivalent, this page delivers verified electrical specs, DO-15 terminal mapping, bidirectional clamping behavior, thermal derating curves, and direct alternatives for overvoltage protection design in harsh environments.
Technical Context
The SA36CA-E3/73 operates as a symmetrical avalanche diode with identical forward and reverse breakdown characteristics, enabling bidirectional transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, critical for consistent clamping under repetitive surges.
It complies with AEC-Q101 stress testing for automotive reliability and supports 175 °C maximum junction temperature. The device uses a 10/1000 μs double-exponential waveform for rating - matching IEC 61000-4-5 Level 4 surge immunity test conditions - and exhibits <1 ns response time to fast-rising transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse voltage before significant leakage; defines safe operating window for protected line. |
| VBR @ IT = 1 mA | 40.0–44.2 V - Breakdown onset range; ensures reliable conduction above normal operating voltage but below system damage threshold. |
| IPPM (10/1000 μs) | 8.6 A - Peak surge current it safely shunts without failure; determines minimum series impedance needed for coordination. |
| VC @ IPPM | ≤58.1 V - Clamped voltage during full-rated surge; must stay below IC absolute maximum ratings of downstream components. |
| PPPM | 500 W - Peak pulse power handling; validates robustness against standardized lightning/surge waveforms per IEC/ANSI. |
| TJ max. | +175 °C - Enables operation in under-hood automotive or high-ambient industrial enclosures without thermal shutdown. |
| Leakage @ VWM | ≤1.0 μA - Negligible standby current; avoids loading on high-impedance sensor or communication lines. |
Pinout & Package
SA36CA-E3/73 is housed in a DO-15 (DO-204AC) axial-leaded package with matte tin-plated leads solderable per J-STD-002. No polarity marking - consistent with bidirectional function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient current entry (either polarity) | Accepts surge energy from either direction; connects to protected line (e.g., CAN_H or RS-485 A). |
| Cathode (Lead 2) | Transient current return path (either polarity) | Completes low-impedance path to ground or reference rail; requires low-inductance layout for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates parameter drift in automotive thermal cycling. |
| 500 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 (4 kV) surge immunity when coordinated with series impedance. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS sensor modules per stress test requirements. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 24 V systems. |
| DO-15 mechanical robustness | Withstands 275 °C solder dip (10 s) and meets UL 94 V-0 flammability; suitable for wave and reflow assembly. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor output and ground to divert transients before reaching ADC input or signal conditioner. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/100 ms) by limiting excursion to ≤58.1 V, preventing ADC saturation or latch-up. | Use Scenario: Safeguarding differential data lines in factory automation PLCs communicating over long RS-485 cables subject to EFT and lightning-induced surges. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS pair (e.g., SA36CA-E3/73 + SA36CA-E3/73) on A/B bus terminals. Use Value: Clamps common-mode surges to <60 V while preserving signal eye diagram integrity - enables >1 Mbps data rates with <1 ns jitter impact. |
| Consumer Power Adapter Input | Telecom DSL Line Protection |
Use Scenario: Secondary-side transient suppression on 12 V DC output rails of wall adapters subjected to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between output and ground to absorb 30 A/10/1000 μs surges induced by connector arcing. Use Value: Prevents downstream DC-DC converter latch-up by holding output voltage ≤58.1 V during 500 W surge, avoiding brownout reset or MOSFET avalanche failure. | Use Scenario: Protecting ADSL/VDSL line drivers and receivers from induced surges on twisted-pair telephone lines in outdoor cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS placed across tip/ring pair to suppress longitudinal mode transients up to 1 kV. Use Value: Limits peak differential voltage to ≤58.1 V, ensuring compliance with ITU-T K.20/21 immunity requirements without degrading 30 MHz signal bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Same VWM/VBR range but SMA package (surface-mount); lower IPPM (7.5 A) and PPPM (400 W). | Preferred for space-constrained PCBs; unsuitable for through-hole legacy designs or high-reliability mechanical retention needs. | Select SMAJ36CA only when board real estate is limited and surge margin allows 20 % lower power rating. |
| P6SMB36CA | DO-214AA (SMB) package; identical VWM, VBR, and PPPM; slightly higher VC (60.0 V) and same IPPM (8.6 A). | Better thermal dissipation than DO-15 in airflow; requires different footprint and rework process vs. axial leads. | Choose P6SMB36CA for improved thermal performance in high-power density layouts where SMB mounting is acceptable. |
Compared with SA36CA-E3/73, SMAJ36CA trades mechanical robustness and legacy compatibility for compactness, while P6SMB36CA offers superior thermal management in modern SMT production - both require layout revision and are not drop-in replacements.
Availability
SA36CA-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, consumer power adapter outputs, and telecom DSL line protection requiring stable component supply across multi-year production cycles.
Supply support for SA36CA-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 protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SAxxCA series targets high-reliability transient suppression in harsh environments - engineered specifically for AEC-Q101 compliance, wide temperature operation, and repeatable clamping performance in safety-critical signal paths.
FAQ
What is the maximum clamping voltage of SA36CA-E3/73 at its rated peak pulse current?
The SA36CA-E3/73 clamps to a maximum of 58.1 V at its rated 8.6 A peak pulse current (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Doc. #88378, Rev. 27-Sep-2021) and defines the upper voltage limit imposed on protected circuitry during surge events. Designers must ensure downstream ICs tolerate this clamped level.
Is SA36CA-E3/73 suitable for automotive applications?
Yes, SA36CA-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use. Its DO-15 package, 175 °C maximum junction temperature, and tested performance under thermal cycling, humidity, and mechanical shock meet automotive reliability requirements. The "HE3" variant is fully qualified; "E3/73" is commercial grade but shares identical electrical specs and construction - widely deployed in non-safety-critical automotive subsystems.
How does the bidirectional nature of SA36CA-E3/73 affect its placement in a circuit?
The bidirectional structure of SA36CA-E3/73 means it has no polarity marking and conducts symmetrically in both directions - ideal for protecting AC-coupled or differential lines like RS-485, CAN, or telecom pairs. It is placed between the protected line and ground (for common-mode suppression) or across two lines (for differential-mode suppression), eliminating orientation concerns during assembly and enabling flexible layout.
What is the leakage current specification for SA36CA-E3/73 at its stand-off voltage?
At its 36 V stand-off voltage (VWM), SA36CA-E3/73 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage ensures minimal loading on high-impedance nodes such as sensor outputs or precision reference lines, preserving accuracy and reducing standby power loss in battery-powered systems.
Can SA36CA-E3/73 be used in parallel for higher surge current handling?
No - SA36CA-E3/73 should not be paralleled without external balancing resistors. Due to VBR tolerance (±5 %), mismatched devices will share surge current unequally, causing one to absorb disproportionate energy and fail prematurely. For higher IPPM, select a single higher-rated device (e.g., SA43CA) or verify matched binning with Vishay application engineering before parallel implementation.
SA36CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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)
SA36CA-E3/73 FAQ
1.How can I place an order for SA36CA-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36CA-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 SA36CA-E3/73 reliable?
The price and inventory of SA36CA-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 SA36CA-E3/73 is usually 5 days.
3.What payment methods are accepted for SA36CA-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36CA-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36CA-E3/73?
SA36CA-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36CA-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 SA36CA-E3/73?
For technical support, including SA36CA-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36CA-E3/73 requirements.
6.How does Aetrix verify that SA36CA-E3/73 is sourced from the original manufacturer or authorized distributors?
All SA36CA-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 SA36CA-E3/73 meets industry standards.
7.What is the process for return or replacement of SA36CA-E3/73?
All SA36CA-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA36CA-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 SA36CA-E3/73 part is unused and in its original packaging.
Return procedure for SA36CA-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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