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Vishay General Semiconductor - Diodes Division SMAJ36CA-M3/5A
- Part No.:
- SMAJ36CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ36CA-M3/5A.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,545
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Product details
Overview
SMAJ36CA-M3/5A 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 a 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 signal lines in automotive and industrial control systems.
For engineers reviewing the SMAJ36CA-M3/5A datasheet, SMAJ36CA-M3/5A pinout, SMAJ36CA-M3/5A application, or SMAJ36CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.42), MSL Level 1 moisture sensitivity, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional CA construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low incremental surge resistance supports effective energy diversion during ESD or lightning-induced surges.
The device is rated for 400 W peak pulse power up to 78 V (derated to 300 W above 78 V), with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W. It is specified for operation from –55 °C to +150 °C junction temperature and meets 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 clamping begins |
| VBR min/max | 40.0 V / 44.2 V at 1 mA - defines reliable conduction onset window under transient stress |
| VC @ IPPM | 58.1 V at 6.9 A - clamped voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 400 W - peak transient energy absorption capacity with standard 10/1000 μs waveform |
| ID @ VWM | 1.0 μA - ultra-low leakage ensures minimal standby power impact on high-impedance nodes |
| TJ max. | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMA (DO-214AC) - compact 2-pin SMD footprint compatible with automated assembly and IPC-7351B land pattern |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking - both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Either terminal accepts surge current in either direction; no cathode band marking required for bidirectional types |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating signal lines without polarity constraints |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V/24 V supply rails |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio suppressors |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end equipment |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without baking or special handling |
Applications
| Automotive Body Control Module | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and inductive switching transients in door modules and seat controllers. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point before signal conditioning circuitry. Use Value: Limits transient voltage to ≤58.1 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces exposed to ISO 7637-2 Pulse 5a. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD (IEC 61000-4-2 ±8 kV contact) and burst noise in factory automation PLCs. IC Role / Device Role / Timing Role: Symmetrical transient clamp across differential bus lines, preserving common-mode rejection while absorbing common-mode surges. Use Value: Maintains CAN signal integrity by clamping transients below 60 V without adding capacitance (>100 pF typical at 0 V), avoiding data rate degradation at 1 Mbps. |
| Consumer Smart Appliance Motor Drive | Telecom Power Supply Input Stage |
Use Scenario: Shielding MCU GPIOs and Hall-effect sensor inputs from back-EMF spikes generated by brushed DC motor commutation in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Localized TVS at sensor harness entry, placed within 2 cm of protected node to minimize inductance. Use Value: Responds in <1 ns to limit spike amplitude to 58.1 V, preventing false triggering or permanent damage to 5 V tolerant analog front-end circuits. |
Use Scenario: Secondary-side transient suppression on 48 V telecom power distribution board, protecting DC-DC converter enable pins and monitoring ICs. IC Role / Device Role / Timing Role: Standoff-rated TVS on low-current control lines where 36 V nominal rail requires precise clamping margin. Use Value: Provides 36 V working voltage headroom with 40.0 V minimum breakdown, ensuring no conduction during normal operation while reacting instantly to 100 V+ surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3) | Preferred for commercial-grade non-automotive designs where halogen-free requirement is absent | Select E3 when halogen-free material is not mandated and cost optimization is prioritized |
| SMAJ36CAHM3_A/I | AEC-Q101 qualified, same M3 halogen-free construction, packaged in 13" reel (I code) | Required for automotive OEM production where component-level reliability certification is mandatory | Choose HM3_A/I for Tier 1 automotive programs needing full AEC-Q101 traceability and extended reel quantity |
Compared with SMAJ36CA-M3/5A, the E3 variant offers identical protection performance at lower material cost but lacks halogen-free compliance, while the HM3_A/I adds AEC-Q101 qualification and larger reel packaging - making it suitable for automotive production but less optimal for cost-sensitive industrial prototypes.
Availability
SMAJ36CA-M3/5A is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN networks, smart appliance motor control, and telecom power management requiring stable component supply and halogen-free compliance.
Supply support for SMAJ36CA-M3/5A 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, power efficiency, and automotive-grade qualification.
The SMAJ series is engineered for robust transient suppression in harsh environments - targeting design-in across automotive, industrial, and telecom infrastructure where failure resilience and long-term stability are critical.
FAQ
What is the clamping voltage of SMAJ36CA-M3/5A at its rated peak pulse current?
The SMAJ36CA-M3/5A 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 ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMAJ36CA-M3/5A maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMAJ36CA-M3/5A suitable for automotive applications?
SMAJ36CA-M3/5A itself is not AEC-Q101 qualified, but it shares identical electrical and mechanical specifications with the AEC-Q101-qualified variant SMAJ36CAHM3_A/I. The M3 suffix confirms halogen-free, RoHS-compliant construction meeting automotive material requirements. For production automotive use, the HM3 variant must be selected; SMAJ36CA-M3/5A is appropriate for prototyping, testing, and non-safety-critical automotive subsystems.
How does the bidirectional design of SMAJ36CA-M3/5A affect PCB layout?
The bidirectional nature of SMAJ36CA-M3/5A eliminates polarity constraints - no cathode marking exists, and either terminal may connect to either side of a differential line or AC-coupled node. This simplifies layout by removing orientation checks during placement and allows symmetric routing on balanced interfaces like RS-485 or CAN. The SMA (DO-214AC) package requires standard 0.2" × 0.2" copper pads per terminal per Vishay's recommended land pattern.
What is the leakage current specification for SMAJ36CA-M3/5A at its standoff voltage?
At its 36 V standoff voltage (VWM), the SMAJ36CA-M3/5A exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage ensures minimal loading on high-impedance sensor outputs or battery-backed circuits. Leakage remains below 5 μA up to +85 °C, supporting reliable operation in industrial temperature ranges without compromising system power budget.
Does SMAJ36CA-M3/5A require derating above 25 °C ambient temperature?
Yes - SMAJ36CA-M3/5A must be derated linearly above 25 °C ambient per Figure 2 in the datasheet. Its 400 W peak pulse power rating applies only at TA = 25 °C; at 70 °C ambient, usable pulse power drops to approximately 280 W. Derating follows a 0.5 %/°C slope for junction-to-ambient thermal path, and proper copper pad area (0.2" × 0.2" per terminal) is essential to maintain thermal performance specified in the datasheet.
SMAJ36CA-M3/5A 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-M3/5A FAQ
1.How can I place an order for SMAJ36CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ36CA-M3/5A 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-M3/5A reliable?
The price and inventory of SMAJ36CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ36CA-M3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ36CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ36CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ36CA-M3/5A?
SMAJ36CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ36CA-M3/5A 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-M3/5A?
For technical support, including SMAJ36CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ36CA-M3/5A requirements.
6.How does Aetrix verify that SMAJ36CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ36CA-M3/5A 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-M3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ36CA-M3/5A?
All SMAJ36CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ36CA-M3/5A, 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-M3/5A part is unused and in its original packaging.
Return procedure for SMAJ36CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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