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Vishay General Semiconductor - Diodes Division SMAJ58CAHE3/61
- Part No.:
- SMAJ58CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ58CAHE3/61.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,520
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Product details
Overview
SMAJ58CAHE3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 58 V standoff voltage (VWM), 64.4–71.2 V breakdown voltage (VBR) at 1 mA, 93.6 V maximum clamping voltage (VC) at 4.3 A peak pulse current, and 400 W peak pulse power (10/1000 μs waveform). It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supply rails.
For engineers reviewing the SMAJ58CAHE3/61 datasheet, SMAJ58CAHE3/61 pinout, SMAJ58CAHE3/61 application, or SMAJ58CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.61), AEC-Q101 qualification, MSL Level 1 rating, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its CA (bidirectional) configuration, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), 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 and derates to 300 W above that threshold, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It is specified for operation from −55 °C to +150 °C and meets J-STD-020 MSL Level 1 with 260 °C reflow peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 48 V nominal systems. |
| VBR (min/max) | 64.4 V / 71.2 V at 1 mA - Confirmed breakdown range ensures reliable turn-on within specification across production lot and temperature. |
| VC @ IPPM | 93.6 V at 4.3 A - Clamping voltage under 10/1000 μs surge; limits downstream voltage stress to ≤93.6 V during worst-case transient. |
| PPPM | 400 W (≤78 V), 300 W (>78 V) - Peak pulse power handling capacity determines survivability against ISO 7637-2 Pulse 1/2a/5a waveforms. |
| IPPM | 4.3 A - Peak pulse current corresponding to VC; used to size PCB trace width and verify layout thermal margin. |
| TJ max | +150 °C - Maximum junction temperature enables use in under-hood automotive environments without derating. |
| MSL Level | Level 1 (per J-STD-020) - Allows unlimited floor life and standard reflow profile (260 °C peak), simplifying manufacturing. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path (bidirectional) | Both terminals serve as identical surge current entry/exit points; no cathode band marking required. |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating; copper pad layout (0.2" × 0.2") required for full 400 W rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring high-reliability surge immunity. |
| 400 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) surges up to 400 W when mounted on recommended 5.0 mm × 5.0 mm copper pads. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage overshoot during clamping, reducing risk of damage to downstream 60 V-rated MOSFETs or CAN transceivers. |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns and enables use in standard high-volume SMT assembly without baking or special handling. |
| Glass passivated junction | Ensures stable leakage current (<1.0 μA at VWM) and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 48 V battery-fed ECUs from load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power input rail to shunt surge energy to ground. Use Value: Limits rail voltage to ≤93.6 V during 400 W surge, preventing latch-up or gate oxide rupture in downstream PMICs and microcontrollers. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS placed differential-mode across signal pair to suppress EFT bursts and inductive switching noise. Use Value: Maintains signal integrity by clamping transients below ADC input absolute maximum rating while adding <1 pF parasitic capacitance. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Safeguarding PoE-powered network switches against AC line coupling and lightning-induced surges on 57 V DC input. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with upstream fuse and common-mode chokes. Use Value: Absorbs repetitive 300 W surges above 78 V without degradation, supporting >100,000 surge cycles in field-deployed equipment. |
Use Scenario: Adding secondary-level surge immunity to USB-C power delivery circuits in portable monitors and docking stations. IC Role / Device Role / Timing Role: Secondary TVS after primary front-end protection, targeting fast-rising ESD events on VBUS line. Use Value: Responds in <1 ps to ±15 kV contact ESD (IEC 61000-4-2), clamping VBUS to 93.6 V before internal buck converters are stressed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No difference in circuit performance or automotive qualification; differs only in material composition. | Select when halogen-free compliance is mandated by OEM environmental requirements. |
| SMBJ58CAHE3/61 | Same VWM, VBR, VC, and PPPM, but in larger SMB (DO-214AA) package with higher thermal mass (RθJA = 85 °C/W). | Better thermal performance under sustained surge conditions; requires larger PCB footprint. | Choose when system-level testing shows thermal derating issues with SMA package under repetitive surge duty. |
Compared with SMAJ58CAHE3/61, SMAJ58CA-M3/61 offers identical protection performance with halogen-free materials, while SMBJ58CAHE3/61 delivers improved thermal dissipation at the cost of board space-making SMAJ58CAHE3/61 optimal for space-constrained AEC-Q101 automotive modules where footprint and MSL Level 1 are critical.
Availability
SMAJ58CAHE3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom DC power inputs, and consumer USB-C PD protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMAJ58CAHE3/61 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, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMAJ series is engineered for robust transient suppression in harsh environments-specifically targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low clamping voltage, and MSL Level 1 process compatibility are mandatory.
FAQ
What is the clamping voltage of SMAJ58CAHE3/61 under a 10/1000 μs surge?
The SMAJ58CAHE3/61 has a maximum clamping voltage (VC) of 93.6 V at 4.3 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per JEDEC standards and confirmed in Vishay's datasheet revision 09-Jan-2024 (Document Number: 88390). The clamping behavior remains consistent across its operating temperature range (−55 °C to +150 °C), making SMAJ58CAHE3/61 suitable for under-hood automotive use.
Is SMAJ58CAHE3/61 AEC-Q101 qualified?
Yes, SMAJ58CAHE3/61 is explicitly AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code and confirmed in the Vishay datasheet (page 3, Note 1). This qualification covers stress tests including HTGB, HTRB, TCT, and ESD, validating its suitability for automotive powertrain and chassis applications. The qualification applies specifically to the HE3 variant-not generic SMAJ58CA parts.
What is the standoff voltage (VWM) and why does it matter for SMAJ58CAHE3/61?
The standoff voltage (VWM) of SMAJ58CAHE3/61 is 58 V-this is the maximum continuous reverse voltage the device can withstand without entering avalanche conduction. It must be selected ≥10–15% above the system's normal operating voltage (e.g., 48 V nominal rails) to avoid leakage or premature clamping. Exceeding VWM risks accelerated aging; staying below ensures SMAJ58CAHE3/61 remains transparent during normal operation.
Does SMAJ58CAHE3/61 have polarity markings, and how is it mounted?
No, SMAJ58CAHE3/61 has no polarity markings because it is a bidirectional TVS diode (CA suffix); both terminals are functionally identical and interchangeable. It mounts in the SMA (DO-214AC) package using standard SMT reflow with matte tin-plated leads. The recommended pad layout is 0.2" × 0.2" (5.0 mm × 5.0 mm) copper per terminal to achieve full 400 W rating, per Vishay's thermal derating curves.
How does the MSL Level 1 rating impact manufacturing of SMAJ58CAHE3/61?
The MSL Level 1 rating (per J-STD-020) means SMAJ58CAHE3/61 has unlimited floor life and tolerates a peak reflow temperature of 260 °C without preconditioning or baking. This eliminates moisture sensitivity handling steps, reduces production risk, and allows direct placement into high-speed pick-and-place lines-critical for automotive Tier 1 suppliers requiring zero-defect SMT yield. The rating is verified through standardized preconditioning and solderability testing.
SMAJ58CAHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- 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)
SMAJ58CAHE3/61 FAQ
1.How can I place an order for SMAJ58CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ58CAHE3/61 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 SMAJ58CAHE3/61 reliable?
The price and inventory of SMAJ58CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ58CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ58CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ58CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ58CAHE3/61?
SMAJ58CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ58CAHE3/61 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 SMAJ58CAHE3/61?
For technical support, including SMAJ58CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ58CAHE3/61 requirements.
6.How does Aetrix verify that SMAJ58CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ58CAHE3/61 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 SMAJ58CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ58CAHE3/61?
All SMAJ58CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ58CAHE3/61, 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 SMAJ58CAHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ58CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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