My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ5.0HE3/61
- Part No.:
- SMAJ5.0HE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ5.0HE3/61.pdf
- Description:
- TVS DIODE 5VWM 9.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,922
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ5.0HE3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AC (SMA) package, rated for 5.0 V stand-off voltage, 400 W peak pulse power (10/1000 µs), 9.6 V clamping voltage at 41.7 A surge current, and qualified to AEC-Q101 for automotive applications. It protects MOSFETs and ICs against inductive switching transients in engine control units.
For engineers reviewing the SMAJ5.0HE3/61 datasheet, SMAJ5.0HE3/61 pinout, SMAJ5.0HE3/61 application, or SMAJ5.0HE3/61 equivalent, key selection criteria include clamping voltage vs. IPPM, VWM/VBR margin, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and DO-214AC mounting compatibility with automated SMT lines.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 5.0 V (VWM) and avalanches sharply above 6.40–7.82 V (VBR min/max at 10 mA). Its glass-passivated junction ensures stable breakdown and low leakage (<800 µA at VWM).
Designed for transient suppression per IEC 61000-4-5 and ANSI/IEEE C62.35, it delivers 400 W peak pulse power on 0.2 × 0.2" copper pads, with clamping limited to 9.6 V at 41.7 A - enabling robust protection of 5 V logic rails without overstressing downstream components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse operating voltage before conduction begins; sets upper limit for safe DC bias on protected line. |
| VBR (min/max) | 6.40 V / 7.82 V at 10 mA - guaranteed avalanche onset range; ensures reliable triggering without premature breakdown. |
| VC @ IPPM | 9.6 V at 41.7 A - clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by protected IC. |
| PPPM | 400 W - peak pulse power handling (10/1000 µs waveform); determines survivability under standard lightning/surge events. |
| IPPM | 41.7 A - corresponding peak surge current at VC; used to size PCB trace width and verify system-level energy absorption. |
| RθJA | 120 °C/W - junction-to-ambient thermal resistance; informs derating requirements for sustained surge repetition or elevated ambient temperatures. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for under-hood ECUs. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case meeting UL 94 V-0. Cathode indicated by band; matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes shunt path during transient event. |
| Cathode (banded end) | High-side input terminal | Connected to protected signal/power line; conducts avalanche current toward anode when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD - enables deployment in engine control, ADAS, and body electronics. |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 5 V rails without failure when mounted per recommended pad layout. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<800 µA at VWM) across temperature and lifetime - critical for low-power sensor interfaces. |
| DO-214AC (SMA) package | Compatible with standard SMT pick-and-place and reflow profiles (MSL level 1, 260 °C peak); supports high-volume automotive manufacturing. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on protected 5 V logic; enables tighter design margins versus higher-ratio alternatives. |
Applications
| Engine Control Unit (ECU) Power Input | Automotive CAN Transceiver Protection |
|---|---|
|
Use Scenario: Protects 5 V supply rail feeding microcontroller and driver ICs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between VCC and GND, responding within <1 ns to clamp overvoltage. Use Value: Limits voltage excursion to ≤9.6 V during 400 W surges, preventing latch-up or permanent damage to 5 V-rated silicon. |
Use Scenario: Safeguards CANH/CANL lines in automotive gateways against ESD and ISO 7637-2 pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS on each CAN line referenced to ground, clamping negative-going spikes on CANL and positive-going on CANH. Use Value: Maintains signal integrity by limiting differential noise to <9.6 V while preserving CAN bus timing margins and bit error rate. |
| Industrial Sensor Signal Conditioning | Consumer USB Port ESD Protection |
|
Use Scenario: Shields analog output (0–5 V) of pressure/temperature sensors in factory automation systems from cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance (typ. 1000 pF at VWM) shunt device on sensor output line, minimizing signal distortion. Use Value: Clamps transients to 9.6 V without loading the 5 V output stage, ensuring ADC accuracy remains unaffected during surge events. |
Use Scenario: Provides secondary ESD protection on VBUS line of USB 2.0 ports in automotive infotainment head units. IC Role / Device Role / Timing Role: Primary surge limiter upstream of polyfuse and load switch, absorbing >15 kV contact ESD per IEC 61000-4-2. Use Value: Prevents VBUS overvoltage from propagating to USB controller ICs, eliminating need for costly redundant protection schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0AHE3/61 | Lower VBR range (6.40–7.07 V) and lower clamping voltage (9.2 V at 43.5 A); same AEC-Q101 qualification and DO-214AC package. | Better suited for tighter 5 V rail margins where sub-9.2 V clamping is mandatory; slightly higher IPPM but reduced VC improves protection fidelity. | Select SMAJ5.0AHE3/61 when system-level testing shows 9.2 V clamping provides superior immunity vs. 9.6 V - especially in low-voltage MCU domains. |
| SMBJ5.0HE3/61 | Same VWM, VBR, and AEC-Q101 rating but in larger DO-214AA (SMB) package; higher PPPM (600 W) and lower RθJA (90 °C/W). | Used where higher surge energy or improved thermal performance is required; incompatible with SMA footprints due to 3.5 mm vs. 2.8 mm width. | Choose SMBJ5.0HE3/61 only if board layout allows footprint change and application demands >400 W surge handling or extended duty-cycle operation. |
Compared with SMAJ5.0HE3/61, SMAJ5.0AHE3/61 offers tighter clamping for sensitive 5 V logic, while SMBJ5.0HE3/61 trades footprint compatibility for higher power and thermal headroom - neither is pin-compatible, requiring PCB redesign for substitution.
Availability
SMAJ5.0HE3/61 is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, CAN bus nodes, and consumer USB power protection requiring stable component supply across production lifecycles.
Supply support for SMAJ5.0HE3/61 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and automotive-grade qualification.
The SMAJ family targets high-reliability transient suppression in automotive, industrial, and telecom systems, specifically engineered to meet AEC-Q101 and IEC 61000-4-5 requirements with optimized clamping and thermal performance.
FAQ
What is the clamping voltage of SMAJ5.0HE3/61 and how is it measured?
The SMAJ5.0HE3/61 has a maximum clamping voltage (VC) of 9.6 V at 41.7 A peak pulse current, tested with a 10/1000 µs waveform per IEC 61000-4-5. This value is measured across the device terminals under standardized surge conditions and represents the highest voltage imposed on the protected circuit during a defined transient event. The SMAJ5.0HE3/61 maintains this clamping performance across its qualified temperature range (−55 °C to +150 °C).
Is SMAJ5.0HE3/61 suitable for automotive applications?
Yes, SMAJ5.0HE3/61 is AEC-Q101 qualified and designated as high-reliability/automotive grade (HE3 suffix), with validation for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge. It is explicitly intended for under-hood and chassis-mounted modules such as engine control units, body controllers, and ADAS sensor interfaces. The SMAJ5.0HE3/61 meets RoHS and WEEE directives and supports lead-free reflow up to 260 °C.
How does SMAJ5.0HE3/61 differ from SMAJ5.0AHE3/61?
SMAJ5.0HE3/61 has a VBR range of 6.40–7.82 V and clamps at 9.6 V, whereas SMAJ5.0AHE3/61 features a tighter VBR range (6.40–7.07 V) and lower clamping voltage (9.2 V at 43.5 A). Both share identical AEC-Q101 qualification, DO-214AC package, and 400 W rating. The SMAJ5.0HE3/61 provides broader VBR tolerance for cost-sensitive designs, while SMAJ5.0AHE3/61 suits applications demanding stricter clamping fidelity.
What is the thermal resistance of SMAJ5.0HE3/61 and why does it matter?
The SMAJ5.0HE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2 × 0.2" copper pads. This parameter determines how much the junction temperature rises per watt of dissipated surge energy. For repetitive surges or high ambient temperatures, exceeding the 150 °C max junction temperature risks parametric shift or failure - so RθJA directly impacts usable surge duty cycle and board-level thermal design. The SMAJ5.0HE3/61's RθJA is specified per JEDEC test conditions and validated in the Vishay datasheet.
Can SMAJ5.0HE3/61 be used in bi-directional protection circuits?
No, SMAJ5.0HE3/61 is a unidirectional TVS diode, identified by the cathode band marking and specified for single-polarity clamping (anode-to-cathode conduction only). For bi-directional protection - such as AC lines or differential buses like RS-485 - Vishay specifies CA-suffix parts (e.g., SMAJ5.0CA). Using SMAJ5.0HE3/61 in reverse-biased configurations may result in uncontrolled breakdown or failure. Always match device polarity to circuit topology; SMAJ5.0HE3/61 is designed exclusively for DC rail or unidirectional signal line protection.
SMAJ5.0HE3/61 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.6V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- Power - Peak Pulse:
- 400W
- 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)
SMAJ5.0HE3/61 FAQ
1.How can I place an order for SMAJ5.0HE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ5.0HE3/61 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 SMAJ5.0HE3/61 reliable?
The price and inventory of SMAJ5.0HE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ5.0HE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ5.0HE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ5.0HE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ5.0HE3/61?
SMAJ5.0HE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ5.0HE3/61 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 SMAJ5.0HE3/61?
For technical support, including SMAJ5.0HE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ5.0HE3/61 requirements.
6.How does Aetrix verify that SMAJ5.0HE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ5.0HE3/61 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 SMAJ5.0HE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ5.0HE3/61?
All SMAJ5.0HE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ5.0HE3/61, 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 SMAJ5.0HE3/61 part is unused and in its original packaging.
Return procedure for SMAJ5.0HE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ5.0HE3/61 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 …
