My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ10AHM3/H
- Part No.:
- SMAJ10AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10AHM3/H.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ10AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 11.1 V minimum breakdown voltage (VBR), 10 V maximum stand-off voltage (VWM), 17.0 V maximum clamping voltage (VC) at 23.5 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMAJ10AHM3/H datasheet, SMAJ10AHM3/H pinout, SMAJ10AHM3/H application, or SMAJ10AHM3/H equivalent, this device is selected for robust ESD and surge protection where low clamping voltage, fast response (<1 ps), and AEC-Q101 qualification (via HM3 suffix) are required in space-constrained PCB layouts.
Technical Context
This unidirectional TVS operates as a reverse-biased avalanche clamp: under normal conditions it presents <1 μA leakage at 10 V; when transient voltage exceeds VBR (11.1–12.3 V), it avalanches into low-impedance conduction within picoseconds to limit voltage to ≤17.0 V at 23.5 A. Its glass-passivated junction ensures stable breakdown and long-term reliability under repetitive surge stress.
Thermally, it uses the SMA package's 30 °C/W junction-to-lead resistance and 120 °C/W junction-to-ambient resistance to dissipate energy; derating begins above 25 °C ambient per Fig. 2, with maximum junction temperature rated at +150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction for automotive-grade deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.1 V / 12.3 V - defines minimum voltage at which avalanche clamping initiates reliably at 1 mA test current |
| VWM | 10 V - maximum continuous reverse operating voltage before significant leakage occurs |
| VC @ IPPM | 17.0 V at 23.5 A - clamped voltage during 400 W 10/1000 μs surge, directly limiting downstream component stress |
| PPPM | 400 W - peak transient power handling capability with standard lightning/surge waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), critical for inductive load switching protection |
| TJ max | +150 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Package | SMA (DO-214AC) - 0.208" × 0.157" footprint with cathode band marking, compatible with automated SMT placement |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices like SMAJ10AHM3/H.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to circuit ground or lower-potential rail; forms return path during clamping |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., 12 V supply rail); avalanche conduction occurs from cathode to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units and body electronics requiring zero-failure reliability under thermal cycling and vibration |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when mounted on 5 mm × 5 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.53) | Minimizes overvoltage exposure to downstream ICs - e.g., keeps microcontroller I/O pins below absolute maximum ratings during transients |
| MSL Level 1 (260 °C reflow) | Supports lead-free soldering without popcorn cracking or delamination, eliminating pre-bake requirements in high-volume assembly |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over 10+ years of field operation in humid or thermally aggressive environments |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive-going surges up to 400 W. Use Value: Limits rail voltage to ≤17.0 V during 23.5 A transients, preventing damage to 24 V-tolerant MCUs and CAN transceivers. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to suppress sub-100 ns ESD pulses. Use Value: Clamps transients before they reach op-amp inputs, preserving signal integrity without adding measurable RC delay. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after synchronous rectification. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing residual flyback spikes and line-induced surges on 5–20 V outputs. Use Value: Maintains VWM = 10 V margin above nominal 9 V output, enabling safe operation while rejecting >17 V faults. |
Use Scenario: Protecting -48 V telecom power distribution boards from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (anode-to-rail, cathode-to-ground) for negative-rail clamping. Use Value: Withstands 400 W surges without thermal runaway, meeting GR-1089-CORE immunity requirements for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10AHE3/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial/industrial use only - not approved for automotive under-hood deployment | Select when cost sensitivity outweighs automotive qualification requirements |
| SMBJ10A-HM3 | Same VBR/VC specs but SMB (DO-214AA) package - 25 % larger footprint, 600 W PPPM | Better thermal dissipation for higher-energy surges; requires PCB layout change | Choose when system-level surge testing exceeds 400 W or board space permits larger package |
Compared with SMAJ10AHM3/H, SMAJ10AHE3/H offers identical electrical performance but no halogen-free or automotive qualification, while SMBJ10A-HM3 delivers higher surge capacity at the cost of increased board area and different thermal interface design.
Availability
SMAJ10AHM3/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer power adapters, and telecom DC feeds requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ10AHM3/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, efficiency, and application-specific optimization.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, fast response, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMAJ10AHM3/H at its rated peak pulse current?
The SMAJ10AHM3/H has a maximum clamping voltage (VC) of 17.0 V at its rated peak pulse current (IPPM) of 23.5 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value ensures protected circuits remain within safe operating limits during transient events, and is confirmed in the Vishay datasheet Document Number 88390, Table on page 2.
Is SMAJ10AHM3/H suitable for automotive applications?
Yes, SMAJ10AHM3/H is AEC-Q101 qualified, halogen-free, and RoHS-compliant - explicitly designated for automotive use via the "HM3" suffix. It meets stringent requirements for temperature cycling, mechanical shock, and long-term reliability in engine control, body electronics, and ADAS subsystems, as verified in Vishay's qualification reports referenced in the ordering information section.
What does the "HM3" suffix indicate for SMAJ10AHM3/H?
The "HM3" suffix on SMAJ10AHM3/H denotes halogen-free, RoHS-compliant construction with full AEC-Q101 qualification - distinguishing it from commercial-grade variants like "E3" or "M3". This suffix also specifies packaging in 7" tape-and-reel (code H) and aligns with Vishay's material categorization per doc?99912 for environmentally regulated markets.
How does SMAJ10AHM3/H compare to bidirectional TVS diodes like SMAJ10CA?
SMAJ10AHM3/H is unidirectional and intended for DC line protection with polarity-sensitive placement (cathode to protected line), whereas SMAJ10CA is bidirectional and symmetrical for AC or floating signal lines. SMAJ10AHM3/H offers tighter VBR tolerance and lower leakage at VWM, making it preferred for 12 V automotive rails where reverse conduction must be blocked.
What PCB pad layout is recommended for optimal thermal performance of SMAJ10AHM3/H?
Vishay specifies mounting SMAJ10AHM3/H on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 400 W peak pulse power. Smaller pads reduce heat dissipation and cause premature failure under repeated surges; the datasheet (Fig. 1, page 4) confirms this layout enables full power derating per ambient temperature curves.
SMAJ10AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 23.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ10AHM3/H FAQ
1.How can I place an order for SMAJ10AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10AHM3/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 SMAJ10AHM3/H reliable?
The price and inventory of SMAJ10AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ10AHM3/H is usually 5 days.
3.What payment methods are accepted for SMAJ10AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10AHM3/H?
SMAJ10AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10AHM3/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 SMAJ10AHM3/H?
For technical support, including SMAJ10AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10AHM3/H requirements.
6.How does Aetrix verify that SMAJ10AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMAJ10AHM3/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 SMAJ10AHM3/H meets industry standards.
7.What is the process for return or replacement of SMAJ10AHM3/H?
All SMAJ10AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10AHM3/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 SMAJ10AHM3/H part is unused and in its original packaging.
Return procedure for SMAJ10AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ10AHM3/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…
