My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J33CAHE3_A/H
- Part No.:
- SMA5J33CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J33CAHE3_A/H.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,900
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J33CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 33 V standoff voltage (VWM), 36.7–40.6 V breakdown voltage (VBR), 500 W peak pulse power (PPPM), clamping voltage of 53.3 V at 9.4 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMA5J33CAHE3_A/H datasheet, SMA5J33CAHE3_A/H pinout, SMA5J33CAHE3_A/H application, or SMA5J33CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, 150 °C max junction temperature, RoHS-compliant and halogen-free construction, and compatibility with automated SMT placement on PCBs requiring IEC 61000-4-2/4-4/4-5 level protection.
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 leakage performance and fast response time (<1 ns) to transients such as ESD, EFT, and lightning-induced surges.
Thermal design relies on low RθJL (25 °C/W) and RθJA (80 °C/W), with derating applied above 25 °C ambient per Fig. 2. The device is rated for non-repetitive 10/1000 μs waveform surges up to 500 W when mounted on 5.0 mm × 5.0 mm copper pads, and supports 8.3 ms half-sine surge current up to 40 A in unidirectional variants - not applicable here due to bidirectional configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR min/max | 36.7 V / 40.6 V at 1 mA - guaranteed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 53.3 V at 9.4 A - clamped voltage under 10/1000 μs surge; determines maximum stress imposed on downstream components. |
| PPPM | 500 W - peak pulse power handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line). |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| Package | SMA (DO-214AC) - surface-mount package with 5.28 mm × 4.50 mm footprint; compatible with standard reflow profiles and J-STD-020 MSL Level 1. |
Pinout & Package
SMA (DO-214AC) package: two-terminal, symmetrical, bidirectional device with no polarity marking. Cathode band absent per specification for CA-suffix parts; terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current in either direction once VBR is exceeded. |
| Case (exposed metal slug) | Thermal conduction path | Integral thermal mass aids heat dissipation; requires adequate copper pad area (0.2" × 0.2") per terminal for rated PPPM. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses (e.g., RS-485, CAN), and floating sensor interfaces without external polarity management. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and infotainment systems. |
| Glass-passivated junction | Ensures stable reverse leakage (<1 μA at VWM) and long-term parameter stability across temperature and humidity stress conditions. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD contact discharge), improving protection margin for sensitive ICs. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients in passenger vehicles. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail input prior to DC/DC converter or LDO regulator. Use Value: Clamps 33 V nominal supply to ≤53.3 V during 500 W surges, preventing damage to downstream PMICs and microcontrollers rated for 36 V absolute max. |
Use Scenario: Safeguarding analog output lines (4–20 mA) and digital I/O (I²C, SPI) of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Parallel-connected TVS on each signal line to shunt induced EFT bursts from relay switching or motor drives. Use Value: Sub-1 ns response and <1 μA leakage at 33 V ensure signal integrity remains uncompromised during normal operation while suppressing >4 kV EFT noise. |
| Telecom Data Line Surge Suppression | Consumer USB Port ESD Protection |
Use Scenario: Front-end protection of PoE-powered Ethernet PHYs and DSL line drivers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional TVS installed on differential pairs (e.g., MDI-X) to clamp common-mode transients without disrupting DC bias. Use Value: Symmetrical VBR (36.7–40.6 V) and matched clamping in both directions preserve signal balance and prevent latch-up in transceivers. |
Use Scenario: Secondary-level ESD protection on USB 2.0 VBUS and D+/D− lines in smart home hubs and docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary polymer PTC fuse to handle residual ±15 kV contact discharge per IEC 61000-4-2. Use Value: 33 V VWM exceeds USB 2.0 VBUS tolerance (5.25 V), ensuring no conduction during normal operation while clamping ESD to <53.3 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J33CA-M3/61 | Same electrical specs and AEC-Q101 qualification; halogen-free construction (vs. HE3's RoHS-only compliance); identical SMA package and marking. | No functional difference in circuit behavior; selected where halogen-free BOM compliance is mandated by OEM or regional regulation. | Choose SMA5J33CAHE3_A/H for standard RoHS automotive programs; choose SMA5J33CA-M3/61 when halogen-free certification is required. |
| SMA6J33CAHE3_A/H | Higher PPPM rating (600 W vs. 500 W); same VWM/VBR/VC; identical AEC-Q101 qualification and SMA package; slightly larger thermal resistance (RθJA = 85 °C/W). | Provides extended surge margin for designs targeting IEC 61000-4-5 Level 5 (6 kV) or repeated surge exposure in harsh industrial settings. | Use SMA6J33CAHE3_A/H where higher energy absorption is needed; retain SMA5J33CAHE3_A/H for cost-sensitive or space-constrained 500 W applications. |
Compared with SMA5J33CAHE3_A/H, SMA5J33CA-M3/61 offers identical protection performance with halogen-free materials, while SMA6J33CAHE3_A/H delivers +20 % peak power handling at the expense of marginally reduced thermal efficiency - enabling tiered design flexibility without layout changes.
Availability
SMA5J33CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with AEC-Q101 qualification and RoHS compliance.
Supply support for SMA5J33CAHE3_A/H 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 performance.
The SMA5J series is engineered for high-power-density transient suppression in automotive, industrial, and communications equipment - delivering robust 500 W surge handling in compact surface-mount form.
FAQ
What is the polarity configuration of SMA5J33CAHE3_A/H?
SMA5J33CAHE3_A/H is a bidirectional TVS diode, meaning it has no designated anode or cathode and functions identically in both directions. Unlike unidirectional variants (e.g., SMA5J33A), it carries no polarity band marking and is intended for AC or differential signal protection where voltage transients may occur with either polarity.
Does SMA5J33CAHE3_A/H meet automotive qualification standards?
Yes, SMA5J33CAHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88875. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, making it suitable for under-hood and cabin automotive applications.
What is the maximum clamping voltage for SMA5J33CAHE3_A/H under surge conditions?
The maximum clamping voltage (VC) for SMA5J33CAHE3_A/H is 53.3 V at a peak pulse current (IPPM) of 9.4 A, measured using the standardized 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full-rated 500 W transient event.
Can SMA5J33CAHE3_A/H be used in place of a unidirectional TVS like SMA5J33A?
No - SMA5J33CAHE3_A/H is electrically and mechanically incompatible with unidirectional replacements in circuits requiring DC bias or polarity-sensitive clamping. Its bidirectional symmetry prevents proper forward conduction in DC power rail applications where unidirectional devices rely on cathode-anode orientation for correct operation.
What is the thermal resistance specification for SMA5J33CAHE3_A/H?
SMA5J33CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead resistance (RθJL) of 25 °C/W, measured with recommended 5.0 mm × 5.0 mm copper pads per terminal. These values assume JEDEC-standard board layout and define allowable power derating above 25 °C ambient temperature.
SMA5J33CAHE3_A/H 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J33CAHE3_A/H FAQ
1.How can I place an order for SMA5J33CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J33CAHE3_A/H 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 SMA5J33CAHE3_A/H reliable?
The price and inventory of SMA5J33CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J33CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J33CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J33CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J33CAHE3_A/H?
SMA5J33CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J33CAHE3_A/H 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 SMA5J33CAHE3_A/H?
For technical support, including SMA5J33CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J33CAHE3_A/H requirements.
6.How does Aetrix verify that SMA5J33CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J33CAHE3_A/H 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 SMA5J33CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J33CAHE3_A/H?
All SMA5J33CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J33CAHE3_A/H, 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 SMA5J33CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMA5J33CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J33CAHE3_A/H 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
