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Vishay General Semiconductor - Diodes Division TPSMA24AHM3_B/H
- Part No.:
- TPSMA24AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA24AHM3_B/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,945
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Product details
Overview
TPSMA24AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in SMA (DO-214AC) package, rated for 24 V breakdown voltage (VBR = 22.8–25.2 V at 1 mA), 400 W peak pulse power (10/1000 μs), 33.2 V clamping voltage at 12 A, and 185 °C maximum junction temperature - used to protect MOSFETs and signal lines in automotive power electronics against lightning-induced transients.
For engineers reviewing the TPSMA24AHM3_B/H datasheet, TPSMA24AHM3_B/H pinout, TPSMA24AHM3_B/H application, or TPSMA24AHM3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance per ordering suffix HM3.
Technical Context
This device employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its TJ = 185 °C rating enables operation in under-hood automotive environments, and its 10/1000 μs waveform response supports IEC 61000-4-5 surge immunity requirements.
The TPSMA24AHM3_B/H delivers precise clamping with VC = 33.2 V at IPPM = 12.0 A and exhibits a typical VBR temperature coefficient of +0.085 %/°C, enabling predictable voltage shift over thermal range without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 V / 24.0 V / 25.2 V at 1 mA - defines precise reverse conduction onset for reliable overvoltage triggering |
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 33.2 V at 12.0 A - clamping voltage during 400 W transient, limiting downstream stress |
| PPPM | 400 W (10/1000 μs) - surge energy handling capacity compliant with IEC 61000-4-5 Level 4 |
| TJ max. | +185 °C - enables use in high-temperature automotive power modules without derating |
| Polarity | Unidirectional - protects against positive transients only; requires correct cathode orientation in PCB layout |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; supports standard reflow up to 260 °C peak |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded epoxy case meeting UL 94 V-0; cathode indicated by color band; matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction or transient clamp path | Connected to protected line (e.g., 24 V rail); forms low-impedance shunt path during overvoltage |
| Cathode | Current exit during forward conduction or transient clamp path | Connected to ground or lower-potential reference; polarity marking ensures correct PCB placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, and HAST testing per JEDEC standards |
| Halogen-free & RoHS-compliant | HM3 suffix confirms full compliance with EU RoHS Directive 2011/65/EU and halogen-free material definition |
| Low incremental surge resistance | Enables tighter clamping (VC/VBR ratio = 1.38) and reduced voltage overshoot during fast transients |
| Very fast response time | Sub-nanosecond turn-on ensures protection before sensitive ICs experience overstress |
| Junction passivation design | Minimizes parameter drift and leakage increase after repeated surge events, extending service life |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 24 V supply rails in body control modules against load-dump transients and alternator ripple. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across input rail and chassis ground. Use Value: Clamps surges to ≤33.2 V, preventing damage to downstream DC-DC converters and microcontrollers rated for 36 V absolute max. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) from ESD and switching noise in factory automation sensors. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal and local ground near connector interface. Use Value: Limits induced transients to <33.2 V while maintaining <1 μA leakage at 20.5 V, preserving signal integrity and accuracy. |
| Telecom Power Input Protection | Consumer Appliance Motor Drive Circuits |
Use Scenario: Safeguarding PoE-powered equipment front-end rectifiers from lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: TVS diode mounted at RJ45 jack, clamping common-mode transients on data pairs. Use Value: Withstands 400 W pulses and operates up to +185 °C, supporting compact, sealed telecom enclosures without forced cooling. | Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb flyback energy during PWM commutation. Use Value: 12 A peak surge capability handles repetitive motor-switching events; MSL Level 1 allows single-pass reflow integration into high-volume SMT lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Same SMA package, 24 V VBR, but rated for 400 W (10/1000 μs) and not AEC-Q101 qualified; TJ max. = 150 °C | Lacks automotive qualification and high-temperature capability; suitable for industrial/commercial only | Select when AEC-Q101 and >150 °C operation are not required; lower cost alternative |
| TPSMA24AHE3_B/H | Identical electrical specs and package, but HE3 suffix indicates RoHS-compliant with AEC-Q101 qualification - not halogen-free | Same automotive use cases, but HM3 offers halogen-free compliance required in some OEM specifications | Choose HM3 when halogen-free materials are mandated; HE3 suffices if only RoHS/AEC-Q101 are required |
Compared with SMAJ24A and TPSMA24AHE3_B/H, the TPSMA24AHM3_B/H uniquely combines halogen-free construction, AEC-Q101 qualification, and 185 °C junction rating - making it the only option qualified for next-generation automotive power modules requiring full environmental and thermal compliance.
Availability
TPSMA24AHM3_B/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom PoE protection, and consumer motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for TPSMA24AHM3_B/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, TVS, and MOSFETs for high-reliability applications.
The TPSMA series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for robust, high-temperature surge protection in automotive and industrial power systems.
FAQ
What is the clamping voltage of the TPSMA24AHM3_B/H at its rated peak pulse current?
The TPSMA24AHM3_B/H has a maximum clamping voltage (VC) of 33.2 V at its peak pulse current (IPPM) of 12.0 A, measured under the standardized 10/1000 μs waveform. This value ensures that downstream components exposed to the protected line remain within safe voltage limits during surge events. The TPSMA24AHM3_B/H achieves this with low incremental surge resistance, contributing to consistent clamping performance across temperature and lifetime.
Is the TPSMA24AHM3_B/H qualified for automotive applications?
Yes, the TPSMA24AHM3_B/H is AEC-Q101 qualified, as confirmed by Vishay's documentation for HM3-suffix parts. It meets rigorous stress tests including high-temperature operating life, temperature cycling, and humidity testing required for automotive under-hood and powertrain applications. The TPSMA24AHM3_B/H also supports junction temperatures up to +185 °C, exceeding standard automotive requirements.
What does the "HM3" suffix mean in TPSMA24AHM3_B/H?
The "HM3" suffix in TPSMA24AHM3_B/H denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It distinguishes this variant from HE3 (RoHS + AEC-Q101 but not halogen-free) and standard non-qualified versions. The "B/H" indicates packaging in 7-inch tape-and-reel format with 1800 units per reel. The TPSMA24AHM3_B/H thus satisfies Tier 1 automotive material declarations and environmental compliance mandates.
How does the TPSMA24AHM3_B/H compare to the TPSMA24AHE3_B/H?
The TPSMA24AHM3_B/H and TPSMA24AHE3_B/H share identical electrical parameters, package (SMA), and AEC-Q101 qualification, but differ in material content: HM3 is halogen-free, while HE3 is RoHS-compliant without halogen-free certification. Both are suitable for automotive use, but TPSMA24AHM3_B/H is required where halogen-free materials are specified in OEM design rules. The TPSMA24AHM3_B/H maintains full interchangeability in circuit function and layout.
What is the maximum reverse leakage current of the TPSMA24AHM3_B/H at its stand-off voltage?
At its maximum stand-off voltage (VWM) of 20.5 V and ambient temperature of 25 °C, the TPSMA24AHM3_B/H exhibits a maximum reverse leakage current (IR) of 1.0 μA. At elevated temperature (TJ = 150 °C), leakage remains ≤1000 μA - a critical specification ensuring minimal power loss and signal interference in always-on automotive modules. This low leakage is maintained across the full operational lifetime of the TPSMA24AHM3_B/H.
TPSMA24AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA24AHM3_B/H FAQ
1.How can I place an order for TPSMA24AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA24AHM3_B/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 TPSMA24AHM3_B/H reliable?
The price and inventory of TPSMA24AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA24AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA24AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA24AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA24AHM3_B/H?
TPSMA24AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA24AHM3_B/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 TPSMA24AHM3_B/H?
For technical support, including TPSMA24AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA24AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA24AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA24AHM3_B/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 TPSMA24AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA24AHM3_B/H?
All TPSMA24AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA24AHM3_B/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 TPSMA24AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA24AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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