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Vishay General Semiconductor - Diodes Division SMA5J33CA-M3/61
- Part No.:
- SMA5J33CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J33CA-M3/61.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,344
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Product details
Overview
SMA5J33CA-M3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 33 V stand-off voltage (VWM), 36.7–40.6 V breakdown voltage (VBR), 500 W peak pulse power (PPPM), and clamps transients to ≤53.3 V at 9.4 A IPPM - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the SMA5J33CA-M3/61 datasheet, SMA5J33CA-M3/61 pinout, SMA5J33CA-M3/61 application, or SMA5J33CA-M3/61 equivalent, key selection criteria include bidirectional clamping capability, 500 W surge rating with 10/1000 µs waveform, M3 halogen-free RoHS compliance, and AEC-Q101 qualification eligibility via HM3 suffix variants.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports effective clamping under fast-rising transients.
The device is rated for TJ = –55 °C to +150 °C and meets MSL Level 1 (260 °C reflow peak), making it suitable for automated SMT assembly in harsh-environment applications. Thermal resistance is 80 °C/W junction-to-ambient (RθJA) on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 36.7 V / 40.6 V at 1 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 53.3 V at 9.4 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 500 W - peak pulse power handling per 10/1000 µs waveform, critical for lightning/inductive load immunity |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| Package | SMA (DO-214AC) - surface-mount outline with 5.28 mm length, compatible with standard pick-and-place and reflow processes |
Pinout & Package
Two-terminal bidirectional device in SMA (DO-214AC) package; no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Mounting pad layout per Vishay recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Reversible current path | Bidirectional conduction enables symmetrical clamping on AC or floating lines |
| Case (anode/cathode tie) | Thermal and electrical reference | DO-214AC body serves as thermal path; no internal ground connection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential buses (e.g., RS-485, CAN) without external polarity management |
| 500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly laid out |
| Low leakage (≤1.0 µA) | Minimizes standby current draw in battery-powered sensor nodes and IoT endpoints |
| Halogen-free M3 construction | Meets IPC-4101D/21 and JEDEC J-STD-020 MSL Level 1 for lead-free assembly compatibility |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensor signal lines from load-dump and ISO 7637-2 pulse 5a transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair to clamp ±100 V transients within 1 ns response time. Use Value: Prevents latch-up or damage to analog front-end amplifiers and ADC inputs while maintaining signal fidelity below 33 V operating range. | Use Scenario: Shielding RS-485 transceivers in factory automation PLCs from EFT bursts and surge coupling on long cable runs. IC Role / Device Role / Timing Role: Placed line-to-line and line-to-ground to suppress common-mode and differential-mode transients up to 500 W. Use Value: Ensures communication continuity during 4 kV surge events per IEC 61000-4-5, avoiding bus lockup or transceiver failure. |
| Consumer Power Adapter Input | Telecom DC Power Feed |
Use Scenario: Safeguarding primary-side controller ICs in universal-input AC/DC adapters against lightning-induced surges on L/N lines. IC Role / Device Role / Timing Role: Used in parallel with MOVs to provide fast-response secondary clamping after initial energy absorption. Use Value: Reduces let-through voltage to <53.3 V, protecting 65 V-rated MOSFETs and PWM controllers from overvoltage stress. | Use Scenario: Protecting PoE (Power over Ethernet) midspan injectors from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Bidirectional placement across +VDC and return to clamp both positive and negative polarity transients. Use Value: Maintains uninterrupted power delivery during 2 kV ring-wave surges by limiting voltage excursion to safe levels for IEEE 802.3af/at circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J33CA-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3) | No difference in surge performance; less stringent material compliance for non-automotive commercial use | Select E3 for cost-sensitive consumer applications where halogen-free is not mandated |
| SMA5J33CAHM3_A/H | Identical specs plus AEC-Q101 qualification; HM3 suffix denotes halogen-free + automotive grade | Required for automotive ECUs, ADAS sensors, and infotainment modules needing qualified components | Choose HM3 variant when automotive qualification and full PPAP support are mandatory |
Compared with SMA5J33CA-M3/61, the E3 version offers identical protection performance at lower material compliance cost, while the HM3 variant adds AEC-Q101 validation for automotive deployment - enabling tiered selection based on end-equipment certification requirements.
Availability
SMA5J33CA-M3/61 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and telecom DC power feed applications requiring stable component supply and halogen-free compliance.
Supply support for SMA5J33CA-M3/61 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 and high-power density packaging.
The SMA5J series is engineered for high-energy transient suppression in space-constrained SMT designs, targeting automotive, industrial, and telecom infrastructure where robustness and automated assembly compatibility are essential.
FAQ
What is the clamping voltage of the SMA5J33CA-M3/61 under a 10/1000 µs surge?
The SMA5J33CA-M3/61 clamps to a maximum of 53.3 V at its rated peak pulse current of 9.4 A (IPPM) under a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J33CA-M3/61 achieves this clamping with low dynamic impedance, ensuring effective energy diversion away from sensitive loads.
Is the SMA5J33CA-M3/61 suitable for automotive applications?
The SMA5J33CA-M3/61 itself is halogen-free and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the functionally identical SMA5J33CAHM3_A/H variant - same electrical specs and M3 material set - with full AEC-Q101 qualification. For automotive-grade deployment, specify the HM3 suffix version; the SMA5J33CA-M3/61 remains appropriate for non-qualified automotive subsystems or commercial/industrial use where qualification is not required.
What does the "CA" suffix indicate in SMA5J33CA-M3/61?
The "CA" suffix in SMA5J33CA-M3/61 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional "A" versions (e.g., SMA5J33A), the CA variant has no cathode band marking and is used where polarity is undefined or alternating, such as across differential data lines or AC power inputs. This makes the SMA5J33CA-M3/61 ideal for protecting balanced interfaces like RS-485 or CAN without polarity constraints.
What is the maximum operating temperature for the SMA5J33CA-M3/61?
The SMA5J33CA-M3/61 has a specified operating junction and storage temperature range of –55 °C to +150 °C. Its thermal resistance is 80 °C/W junction-to-ambient (RθJA) when mounted on the recommended 5.0 mm × 5.0 mm copper pad layout. Derating applies above TA = 25 °C per Figure 2 in the datasheet, and sustained operation near 150 °C requires careful PCB thermal design to avoid exceeding TJ max. The SMA5J33CA-M3/61 maintains stable VBR and leakage performance across this full range.
How does the SMA5J33CA-M3/61 differ from the SMA5J33A-M3/61?
The SMA5J33CA-M3/61 is bidirectional, while the SMA5J33A-M3/61 is unidirectional - indicated by the "CA" vs "A" suffix. The CA version clamps symmetrically in both directions with no polarity marking; the A version has a cathode band and conducts only in reverse bias. Electrically, the SMA5J33CA-M3/61 has identical VWM (33 V), VBR (36.7–40.6 V), and PPPM (500 W), but its unidirectional counterpart supports 40 A IFSM surge current - a parameter not applicable to bidirectional devices. Choose SMA5J33CA-M3/61 for AC or floating-line protection.
SMA5J33CA-M3/61 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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 9.4A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J33CA-M3/61 FAQ
1.How can I place an order for SMA5J33CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J33CA-M3/61 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 SMA5J33CA-M3/61 reliable?
The price and inventory of SMA5J33CA-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J33CA-M3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J33CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J33CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J33CA-M3/61?
SMA5J33CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J33CA-M3/61 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 SMA5J33CA-M3/61?
For technical support, including SMA5J33CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J33CA-M3/61 requirements.
6.How does Aetrix verify that SMA5J33CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J33CA-M3/61 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 SMA5J33CA-M3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J33CA-M3/61?
All SMA5J33CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J33CA-M3/61, 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 SMA5J33CA-M3/61 part is unused and in its original packaging.
Return procedure for SMA5J33CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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