My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ160AHM3_A/H
- Part No.:
- SMAJ160AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ160AHM3_A/H.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,444
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ160AHM3_A/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 160 V stand-off voltage (VWM), 178–197 V breakdown voltage (VBR) at 1 mA, 259 V maximum clamping voltage (VC) at 1.2 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform). It protects MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the SMAJ160AHM3_A/H datasheet, SMAJ160AHM3_A/H pinout, SMAJ160AHM3_A/H application, or SMAJ160AHM3_A/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), junction temperature range (–55 to +150 °C), and halogen-free RoHS-compliant construction - all critical for ESD/surge protection design-in and long-term reliability validation.
Technical Context
This TVS diode operates as a unidirectional clamp, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of EFT and lightning-induced surges per IEC 61000-4-2/4-4/4-5.
Rated for 400 W peak pulse power (derated to 300 W above 78 V), it sustains repetitive transients at 0.01 % duty cycle. The SMA package supports automated placement and meets MSL level 1 (260 °C reflow peak), with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 120–150 V DC bus applications. |
| VBR (min/max) | 178 V / 197 V at 1 mA - Confirmed breakdown range ensures predictable turn-on under surge conditions without premature conduction. |
| VC @ IPPM | 259 V at 1.2 A - Clamping voltage limits downstream device stress during 10/1000 μs transients; enables robust protection of 200 V-rated components. |
| PPPM | 400 W (10/1000 μs) - Peak transient energy handling capacity; sufficient for ISO 7637-2 Pulse 1/2a/5a in automotive 24 V systems. |
| ID @ VWM | ≤1.0 μA - Ultra-low reverse leakage preserves efficiency in high-impedance bias networks and battery-backed circuits. |
| TJ max. | +150 °C - Enables operation in under-hood automotive and industrial environments with minimal derating. |
| RθJA | 120 °C/W - Thermal resistance measured on 0.2" × 0.2" copper pads; informs heatsinking requirements for sustained surge duty cycles. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with cathode band marking. Dimensions: 4.50 mm × 2.79 mm × 2.29 mm (L × W × H); weight: 0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; forms forward-biased path during positive transients on cathode-referenced rails. |
| Cathode | Reverse voltage reference terminal | Marked by band; connected to higher-potential rail (e.g., VBUS); conducts when transient exceeds VBR, shunting surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance - required for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with JEDEC J-STD-20 and EU RoHS Directive 2011/65/EU; supports green manufacturing and end-of-life recycling. |
| 400 W peak pulse power | Handles high-energy transients per ISO 16750-2 and SAE J1113-11 without degradation; maintains clamping performance over >1000 surges. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without popcorn cracking or delamination - eliminates pre-bake requirement. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), improving protection margin for sensitive gate drivers and ADC inputs. |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in junction boxes and fuse panels against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient overvoltage on main power input prior to DC/DC converters and microcontrollers. Use Value: Limits peak voltage to ≤259 V during ISO 7637-2 Pulse 5a (100 V, 400 ms), preventing latch-up or burnout in downstream 36 V-rated regulators. |
Use Scenario: Shielding digital input channels of programmable logic controllers from field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed between terminal block and optocoupler input, referenced to system ground. Use Value: Sub-1.0 μA leakage avoids false triggering of 24 V dry-contact inputs; 259 V clamping preserves optocoupler CTR over lifetime. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding -48 V telecom rectifier outputs and PSE ports against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS installed on each output rail, cathode tied to -48 V, anode to ground. Use Value: 160 V VWM provides 10 % margin above nominal -48 V (|48| × 3.33 ≈ 160 V), ensuring no conduction during normal operation while clamping ±200 V transients. |
Use Scenario: Suppressing Miller-induced voltage spikes across high-side N-channel MOSFET gates in half-bridge inverters. IC Role / Device Role / Timing Role: TVS placed between gate and source, clamping dv/dt-induced overshoot during switching transitions. Use Value: 1.2 A IPPM capability handles gate charge injection surges; 259 V VC prevents gate oxide breakdown in 600 V-class MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ160AHE3_A/H | Same electrical specs and package, but RoHS-compliant commercial grade (not halogen-free); no AEC-Q101 qualification. | Suitable for non-automotive industrial or consumer applications where halogen content and automotive qualification are not mandated. | Select SMAJ160AHE3_A/H for cost-sensitive commercial designs without automotive or green-material requirements. |
| SMBJ160A-HM3 | Same VWM/VBR/VC ratings, but SMB (DO-214AA) package - 25 % larger footprint and 10 % higher RθJA (135 °C/W). | Better suited for manual prototyping or high-surge applications requiring enhanced thermal mass; incompatible with SMA-reflow footprints. | Choose SMBJ160A-HM3 only if board layout allows larger pad area and thermal performance demands exceed SMAJ160AHM3_A/H capability. |
Compared with SMAJ160AHE3_A/H, the SMAJ160AHM3_A/H adds halogen-free construction and AEC-Q101 qualification without sacrificing clamping performance; versus SMBJ160A-HM3, it offers identical protection in a space-constrained SMA footprint but requires tighter thermal management due to higher RθJA.
Availability
SMAJ160AHM3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC feeds, and motor drive gate driver protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMAJ160AHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where AEC-Q101 qualification, low leakage, and repeatable clamping are mandatory.
FAQ
What is the maximum clamping voltage of the SMAJ160AHM3_A/H under a 10/1000 μs surge?
The SMAJ160AHM3_A/H has a maximum clamping voltage (VC) of 259 V at 1.2 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMAJ160AHM3_A/H maintains this clamping performance across its full operating temperature range (–55 to +150 °C) and after repeated surges, making it suitable for mission-critical protection in automotive and industrial applications.
Is the SMAJ160AHM3_A/H qualified for automotive use?
Yes, the SMAJ160AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88390. This qualification covers stress tests including temperature cycling, highly accelerated life testing (HALT), and surge endurance - validating its suitability for under-hood and chassis-mounted automotive systems such as body control modules, lighting drivers, and power distribution units. The SMAJ160AHM3_A/H meets the reliability and failure rate requirements defined in AEC-Q101 Rev D.
What does the "HM3" suffix indicate in SMAJ160AHM3_A/H?
The "HM3" suffix in SMAJ160AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "M" signifies halogen-free molding compound, and "3" confirms RoHS compliance per EU Directive 2011/65/EU. This distinguishes it from "HE3" (AEC-Q101 + RoHS, not halogen-free) and "E3" (RoHS only, commercial grade). The full part number SMAJ160AHM3_A/H thus guarantees automotive-grade reliability, environmental compliance, and material safety for regulated markets.
How does the thermal resistance of SMAJ160AHM3_A/H affect PCB layout?
The SMAJ160AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain junction temperature below 150 °C during repetitive surge events, designers must allocate adequate copper area and consider thermal vias beneath the SMA pads. Reducing RθJA via larger pads or internal ground planes directly improves surge repetition rate capability - critical for applications like motor drives where multiple transients occur in rapid succession. The SMAJ160AHM3_A/H's RθJA value is validated per JESD51-3 and must be used with actual board-level thermal modeling.
Can SMAJ160AHM3_A/H replace SMAJ160A-E3 in an existing design?
The SMAJ160AHM3_A/H is not a direct drop-in replacement for SMAJ160A-E3 due to differences in qualification and material content: SMAJ160AHM3_A/H is AEC-Q101 qualified and halogen-free, whereas SMAJ160A-E3 is RoHS-compliant commercial grade only. Electrically, both share identical VWM (160 V), VBR (178–197 V), and VC (259 V) specs. However, substituting SMAJ160AHM3_A/H into a non-automotive design requires verification of solder profile compatibility (both are MSL Level 1) and assessment of whether halogen-free content impacts assembly or regulatory compliance in the target application.
SMAJ160AHM3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- 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)
SMAJ160AHM3_A/H FAQ
1.How can I place an order for SMAJ160AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ160AHM3_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 SMAJ160AHM3_A/H reliable?
The price and inventory of SMAJ160AHM3_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 SMAJ160AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMAJ160AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ160AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ160AHM3_A/H?
SMAJ160AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ160AHM3_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 SMAJ160AHM3_A/H?
For technical support, including SMAJ160AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ160AHM3_A/H requirements.
6.How does Aetrix verify that SMAJ160AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMAJ160AHM3_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 SMAJ160AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMAJ160AHM3_A/H?
All SMAJ160AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ160AHM3_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 SMAJ160AHM3_A/H part is unused and in its original packaging.
Return procedure for SMAJ160AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ160AHM3_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
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 …
