My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J33C-E3/61
- Part No.:
- SMA5J33C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J33C-E3/61.pdf
- Description:
- TVS DIODE 33VWM 59VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,520
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J33C-E3/61 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on power and signal lines. It features a 33 V stand-off voltage (VWM), 53.3 V maximum clamping voltage (VC) at 9.4 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform. Used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the SMA5J33C-E3/61 datasheet, SMA5J33C-E3/61 pinout, SMA5J33C-E3/61 application, or SMA5J33C-E3/61 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, DO-214AC thermal resistance (RθJA = 80 °C/W), and compliance with IEC 62304 and ISO 16750-2 surge immunity requirements.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 36.7 V and 40.6 V at 1 mA test current. Its low incremental surge resistance enables stable clamping under fast 10/1000 µs transients, and it maintains full functionality across -55 °C to +150 °C junction temperature range.
No polarity marking is present on the device body, consistent with bi-directional construction. The glass-passivated junction ensures robust ESD immunity and long-term reliability under repetitive surge stress, while meeting MSL Level 1 reflow profile (260 °C peak).
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 - Breakdown occurs within this range at 1 mA, defining turn-on threshold |
| VC @ IPPM | 53.3 V at 9.4 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 500 W - Peak transient energy absorption capacity under standardized waveform |
| TJ max | +150 °C - Maximum allowable junction temperature for sustained operation |
| RθJA | 80 °C/W - Thermal resistance from junction to ambient on standard 5 mm × 5 mm copper pads |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability per stress test requirements |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, 0.208" × 0.157" footprint, 0.078" nominal height. Bi-directional construction means no cathode band marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Either terminal serves as input/output; bidirectional clamping eliminates orientation dependency during placement |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical anchoring and heatsinking via PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended lifetime under thermal cycling |
| Glass-passivated junction | Improves moisture resistance and long-term stability of VBR and leakage performance over 15+ year service life |
| MSL Level 1 rating | Supports lead-free reflow assembly without pre-baking, reducing manufacturing cost and process complexity |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), critical for protecting high-speed interfaces |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Suppressing load-dump and jump-start surges on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤53.3 V, preventing latch-up or gate oxide damage in downstream 33 V-rated components. | Use Scenario: Protecting analog outputs (e.g., 4–20 mA loops) and digital I/O (CAN, LIN) from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional shunt clamp on differential or single-ended sensor interface lines. Use Value: Maintains signal integrity by clamping ±33 V transients without polarity biasing, preserving common-mode range. |
| Consumer Power Adapter Input Stage | Telecom Equipment Surge Interface |
Use Scenario: Safeguarding AC-DC front-end rectifiers and primary-side controllers against line surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Secondary-level transient suppressor after MOV-based primary protection. Use Value: Provides precise 33 V clamping with <1 ns response, complementing slower primary protectors for coordinated staging. | Use Scenario: Hardening Ethernet PHY ports and PoE injectors against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Bi-directional line protector on data pair conductors prior to magnetics or transformer coupling. Use Value: Withstands repeated 500 W surges while maintaining <1 µA leakage at 33 V, ensuring minimal baseline power loss. |
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 | Identical electrical specs and packaging; CA suffix explicitly denotes bi-directional version per Vishay naming convention | No functional difference; used interchangeably where CA suffix is required in BOM systems | Select SMA5J33CA-E3/61 when strict adherence to Vishay's bi-directional part numbering is mandated |
| SMCJ33CA | Same VWM (33 V) and VC (53.3 V), but in larger DO-214AB (SMC) package with 1500 W PPPM rating | Higher power handling supports longer-duration surges; requires larger PCB area and different pad layout | Choose SMCJ33CA only when system-level surge testing exceeds 500 W or when thermal margin is constrained |
Compared with SMA5J33C-E3/61, SMA5J33CA-E3/61 offers identical protection performance with explicit bi-directional designation, while SMCJ33CA trades compact size for higher surge capacity-making SMA5J33C-E3/61 optimal for space-constrained automotive and portable industrial designs.
Availability
SMA5J33C-E3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer power adapters, and telecom interface protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMA5J33C-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMA5J series is engineered for high-density surface-mount transient suppression in harsh environments, targeting automotive, industrial, and communications systems where compact bi-directional clamping and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the SMA5J33C-E3/61 under a 10/1000 µs surge?
The SMA5J33C-E3/61 clamps to a maximum of 53.3 V when subjected to its rated 9.4 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the device terminals with recommended PCB pad layout (0.2" × 0.2" copper per terminal), and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the SMA5J33C-E3/61 suitable for automotive applications?
Yes, the SMA5J33C-E3/61 is AEC-Q101 qualified and specifically designed for automotive use. It meets stringent requirements for temperature cycling, humidity resistance, and surge endurance, making it appropriate for engine control units, body electronics, infotainment systems, and ADAS sensors where reliable transient suppression is critical.
Does the SMA5J33C-E3/61 have polarity markings?
No, the SMA5J33C-E3/61 does not feature a cathode band or other polarity marking because it is a bi-directional TVS diode. Both terminals are functionally identical, allowing unrestricted orientation during automated placement and eliminating risk of incorrect installation on PCBs.
What is the thermal resistance of the SMA5J33C-E3/61?
The SMA5J33C-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and is essential for calculating safe power derating above 25 °C ambient temperature.
How does the SMA5J33C-E3/61 differ from the SMA5J33A variant?
The SMA5J33C-E3/61 is bi-directional, whereas SMA5J33A is uni-directional. This means SMA5J33C-E3/61 clamps transients of either polarity symmetrically and lacks a cathode band, while SMA5J33A requires correct orientation and only suppresses reverse-polarity surges. Their VWM, VBR, and VC values are otherwise closely matched for equivalent protection levels.
SMA5J33C-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 8.5A
- 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)
SMA5J33C-E3/61 FAQ
1.How can I place an order for SMA5J33C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J33C-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 SMA5J33C-E3/61 reliable?
The price and inventory of SMA5J33C-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 SMA5J33C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J33C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J33C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J33C-E3/61?
SMA5J33C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J33C-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 SMA5J33C-E3/61?
For technical support, including SMA5J33C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J33C-E3/61 requirements.
6.How does Aetrix verify that SMA5J33C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J33C-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 SMA5J33C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J33C-E3/61?
All SMA5J33C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J33C-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 SMA5J33C-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J33C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J33C-E3/61 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
