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Vishay General Semiconductor - Diodes Division SMAJ36CA-E3/61
- Part No.:
- SMAJ36CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ36CA-E3/61.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:10,213
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Product details
Overview
SMAJ36CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum clamping voltage (VC) at 6.9 A peak pulse current, and 400 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 SMAJ36CA-E3/61 datasheet, SMAJ36CA-E3/61 pinout, SMAJ36CA-E3/61 application, or SMAJ36CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.61), AEC-Q101 qualification eligibility (via HE3 suffix variants), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions. Its glass-passivated junction enables fast response time (<1 ps), low incremental surge resistance, and stable leakage (<1.0 μA at VWM), critical for protecting sensitive analog and digital inputs against ESD and inductive switching spikes.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It meets UL 497B recognition (QVGQ2) and complies with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working range for protected line. |
| VBR (min/max) | 40.0 V / 44.2 V at 1 mA - Breakdown threshold range; ensures reliable conduction onset during overvoltage events. |
| VC @ IPPM | 58.1 V at 6.9 A - Clamped voltage under 10/1000 μs surge; determines maximum stress imposed on downstream circuitry. |
| PPPM | 400 W - Peak pulse power handling (10/1000 μs); supports robust protection against lightning-induced surges and load dump transients. |
| IDR @ VWM | <1.0 μA - Reverse leakage at standoff voltage; minimizes standby power loss and avoids false triggering in high-impedance nodes. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm × 4.50 mm footprint and 2.29 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMA (DO-214AC), bidirectional configuration with no polarity marking; symmetrical terminals suitable for AC-coupled or floating signal line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current in either direction when voltage exceeds ±VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both polarities - eliminates need for polarity-aware layout in differential or AC signal paths. |
| 400 W peak pulse power | Rated per 10/1000 μs waveform - withstands high-energy transients common in 12 V/24 V automotive power nets and industrial motor drives. |
| Low clamping ratio (VC/VWM) | 1.61 - Limits protected node overvoltage to <62 % above nominal rail, enhancing reliability of 3.3 V/5 V logic interfaces. |
| MSL Level 1 compliance | Reflow capable up to 260 °C peak without baking - simplifies manufacturing integration and reduces assembly risk. |
| AEC-Q101 qualification option | Available via HE3/HM3 suffix variants - supports automotive-grade supply chain traceability and long-term reliability validation. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting LIN bus transceiver inputs from load-dump and jump-start induced transients in door modules and lighting controllers. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching PHY IC. Use Value: Maintains signal integrity below 58.1 V clamping level while surviving 400 W pulses - prevents latch-up or permanent damage to LIN transceivers. |
Use Scenario: Shielding 4–20 mA current-loop analog inputs in PLC I/O modules from field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) bidirectional suppressor mounted adjacent to terminal block to intercept transients before op-amp input stage. Use Value: Enables stable operation at 36 V system rails with minimal offset error contribution due to sub-microamp leakage. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input Stage |
Use Scenario: Safeguarding gate drivers and microcontroller GPIOs from back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Fast-response (<1 ps) TVS placed between half-bridge output and MCU sense lines to suppress nanosecond-scale ringing. Use Value: Prevents false triggering of overvoltage detection circuits and avoids reset events caused by transient-induced logic glitches. |
Use Scenario: Front-end protection for 48 V telecom rectifier outputs against lightning-induced surges entering via distribution cabling. IC Role / Device Role / Timing Role: Primary clamping device in series with input filter capacitor, absorbing bulk surge energy before DC-DC converter stage. Use Value: Delivers 400 W pulse handling with 58.1 V clamping - keeps downstream converters within safe operating area during Category A/B surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA-M3/61 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMA package. | No functional difference; selected where halogen-free BOM compliance is mandated. | Choose SMAJ36CA-M3/61 when environmental compliance requires absence of brominated flame retardants. |
| SMAJ36A-E3/61 | Unidirectional version - cathode-banded, asymmetric conduction (conducts only in reverse bias). | Requires polarity-aware layout; unsuitable for AC or floating signals but offers lower forward voltage drop in DC rail protection. | Select SMAJ36A-E3/61 only for unidirectional DC power rail clamping where polarity is fixed and forward conduction must be avoided. |
Compared with SMAJ36CA-E3/61, the M3 variant adds halogen-free molding compound without altering surge performance, while the unidirectional SMAJ36A-E3/61 changes conduction symmetry - making it incompatible for bidirectional signal line use but preferable for cost-sensitive DC rail designs where polarity is controlled.
Availability
SMAJ36CA-E3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer appliance motor controls, and telecom power input protection requiring stable component supply and full traceability.
Supply support for SMAJ36CA-E3/61 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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against ESD, lightning, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of SMAJ36CA-E3/61 at its rated peak pulse current?
The SMAJ36CA-E3/61 has a maximum clamping voltage (VC) of 58.1 V at 6.9 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is symmetric in both directions due to its bidirectional construction, ensuring consistent protection regardless of transient polarity.
Is SMAJ36CA-E3/61 suitable for automotive applications?
SMAJ36CA-E3/61 itself is commercial-grade, but Vishay offers AEC-Q101 qualified versions under the HE3 and HM3 suffixes (e.g., SMAJ36CAHE3_A). These variants undergo extended reliability testing including temperature cycling, humidity bias, and mechanical shock - meeting automotive requirements for under-hood and body electronics. For production automotive use, specify the HE3/HM3 variant rather than the base E3/61 part.
How does SMAJ36CA-E3/61 differ from SMAJ36A-E3/61?
SMAJ36CA-E3/61 is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas SMAJ36A-E3/61 is unidirectional - featuring a cathode band and conducting only when reverse-biased. Their VWM, VBR, and VC values are closely matched, but the unidirectional version cannot protect AC or floating signals. Layout and system-level polarity constraints determine which variant is appropriate for a given design.
What is the maximum operating temperature for SMAJ36CA-E3/61?
The SMAJ36CA-E3/61 has a maximum junction temperature (TJ) rating of +150 °C and an operating storage temperature range of –55 °C to +150 °C. Its thermal resistance is 120 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Derating curves in the datasheet show that peak pulse power drops to 300 W above 78 V and further decreases linearly above 25 °C ambient - requiring thermal design consideration in high-power or high-temperature environments.
Does SMAJ36CA-E3/61 require special PCB layout considerations?
Yes - to achieve rated 400 W pulse power, SMAJ36CA-E3/61 must be mounted on minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's datasheet Fig. 2 and thermal characterization. Smaller pads increase thermal resistance and reduce surge capability. Additionally, minimize trace inductance between the TVS and protected node - place it as close as possible to the connector or IC pin being safeguarded to ensure effective transient shunting.
SMAJ36CA-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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):
- 6.9A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ36CA-E3/61 FAQ
1.How can I place an order for SMAJ36CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ36CA-E3/61 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 SMAJ36CA-E3/61 reliable?
The price and inventory of SMAJ36CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ36CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ36CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ36CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ36CA-E3/61?
SMAJ36CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ36CA-E3/61 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 SMAJ36CA-E3/61?
For technical support, including SMAJ36CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ36CA-E3/61 requirements.
6.How does Aetrix verify that SMAJ36CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ36CA-E3/61 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 SMAJ36CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ36CA-E3/61?
All SMAJ36CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ36CA-E3/61, 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 SMAJ36CA-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ36CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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